Part 6 Aggregates for Unbound and Hydraulically Bound Materials

PD 6682-6:2009 6682-6:2009+A1:2013 +A1:2013

I S B

BSI Standards Publication

© , y p o C d e l l o r t n o c n U , 6 1 0 2 / 6 0 / 1 0 , . L . L . W

PUBLISHED DOCUMENT Aggregates – Part 6: Aggregates for unbound and hydraulically bound mater ials for use in civil engineering works and road construct ion – Guidance on the use of BS EN 13242

y n a p m o C g n i t c a r t n o C K B H : y p o c d e s n e c i L

This publication is not to be regarded as a British Standard.

NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW

raising standards worldwide™

PD 6682-6:2009+A1:2013

PUBLISHED DOCUMENT Publishing and copyright information The BSI copyright notice displayed in this document indicates when the document was last issued. © The British Standards Institution 2013 Published by BSI Standards Limited 2013 ISBN 978 0 580 75200 1 ICS 91.100.15, 93.080.40, 93.010 The following BSI reference relates to the work on this standard: Committee reference B/502 Draft for comment: DC 12/30275708

I S B © , y p o C d e l l o r t n o c n U , 6 1 0 2 / 6 0 / 1 0 , . L . L . W y n a p m o C g n i t c a r t n o C K B H : y p o c d e s n e c i L

Publication history First published August 2003 Second (present) edition, May 2013

Amendments issued since publication Date

Text affected

May 2013

A1. See Foreword

PD 6682-6:2009+A1:2013

PUBLISHED DOCUMENT Publishing and copyright information The BSI copyright notice displayed in this document indicates when the document was last issued. © The British Standards Institution 2013 Published by BSI Standards Limited 2013 ISBN 978 0 580 75200 1 ICS 91.100.15, 93.080.40, 93.010 The following BSI reference relates to the work on this standard: Committee reference B/502 Draft for comment: DC 12/30275708


Publication history First published August 2003 Second (present) edition, May 2013

Amendments issued since publication Date

Text affected

May 2013

A1. See Foreword

PUBLISHED DOCUMENT

3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o c

d e s n e c i L

PD 6682-6:2009+A1:2013 PD 6682-6:2009

Contents Foreword 1 Introduction 3 1 Scope 3 2 Normative references 4 3 Overview of BS EN 13242:2002+A1 4 4 Requirements Requiremen ts of BS EN 13242:2002+A1 6 5 Provisions of the EU Construction Products Directive

18

Annexes Annex A (informative (informative)) Example specification for pipe bedding, haunching and surrounding material 20 Annex B (informative (informative)) Example specification for backfilling of trenches and filter drains 21 Annex C (informative) (informative) Example specification specification for fill material 22 Annex D (informative (informative)) Example specification for unbound subbases for road pavements 23 Annex E (informativ (informative) e) Example specification for cement bound granular mixtures (CBGM) 24 Annex F (informative (informative)) Examples of specification specificationss using categories for the constituents of coarse recycled aggregates 25 Bibliography 27 List of tables Table 1 – Recommended BS EN 13242:2002+A1 aggregates 8 Table 2 – Recommended sieves, including next nearest multiples and fractions from from the ISO 565 R 20 series 8 Table 3 – Recommended BS EN 13242:2002+A1 grading categories and grading tolerance categories for coarse aggregate 11 Table 4 – Recommended BS EN 13242:2002+A1 grading categories and grading tolerance categories for fine aggregate, Category GF85 ( (GT GT F20) 12 Table 5 – Overall grading limits for all-in aggregates classified by BS EN 13242:2002+A1 category GA80 (GT (GT A20) 12 Table 6 – Recommended BS EN 13242:2002+A1 categories for the Los Angeles coefficient 13 Table 7 – Recommended BS EN 13242:2002+A1 categories for acid-soluble sulfate content 15 Table 8 – Constituents of coarse recycled aggregate 16 Table 9 – Levels of attestation of conformity in accordance with the EU Construction Products Directive and referred to in BS EN 13242:2002+A1 18 Table A.1 – Example specification for pipe bedding, haunching and surrounding material 20 Table B.1 – Example specification for backfilling of trenches and filter drains 21 Table C.1 – Example specification for fill material 22 Table D.1 – Example specification for unbound subbases for road pavements 23 Table E.1 – Example specification for cement bound granular mixtures (CBGM) 24 Table F.1 – Categorization of recycled aggregate for use in Type 1 and Type 2 unbound mixtures for subbase 25 Table F.2 – Categorization of recycled aggregate for use in Type 4 unbound mixtures for subbase 26 Summary of pages This document comprises a front cover, an inside front cover, pages i to ii, pages 1 to 28, an inside back cover and a back cover. © The British Standards Institution © BSI 2009 2013



i

PD 6682-6:2009+A1:2013 6682-6:2009

PUBLISHED DOCUMENT

ii

This page deliberately left blank


d e s n e c i L



© The BSI 2009 British Standards Institution 2013

PUBLISHED DOCUMENT

3 1

PD 6682-6:2009+A1:2013

Foreword Publishing information This Part of PD 6682 is published by BSI Standards Limited, under licence from The British Standards Institution and came into effect on 30 November 2009. It was prepared by Technical Committee B/502, Aggregates. A list of organizations represented on this committee can be obtained on request to its secretary.

Supersession PD 6682-6:2009+A1:2013 supersedes PD 6682-6:2009, which is withdrawn. I S B © , i r y B p e o h C T ) cd ( e , yl pl o o C r d t e l n l o o r t c n n o c U n U , , 86 3 : 1 20 12 3/ 16 00 2 / / 31 0 / 0 9 1 , , n . o i L t . u t i L t s . n I W s d y r n a d a n p a t m S o h C s i t i g r B n , i n t o s c b a i r G t h n a r o a C S s s K i B M H : y :

Information about this document Text introduced or altered by Amendment No. 1 is indicated in the text by tags . Minor editorial changes are not tagged. This part of PD 6682 gives guidance on the use of BS EN 13242:2002+A1, which specifies requirements for aggregates for unbound and hydraulically-bound materials. Attention is drawn to the fact that BS EN 13242:2002+A1 fully takes into account the requirements of the European Commission mandate M125, Aggregates [1], given under the EU Construction Products Directive (89/106/EEC) [2]. This part of PD 6682 is one of nine parts that give guidance on the use and application of a series of European Standards for aggregates. These European Standards were prepared by CEN/TC 154, Aggregates, and have been adopted as British Standards. Conflicting British Standards relating to aggregates were withdrawn in June 2004. Guidance on the other European Standards in the series is given in the following parts of PD 6682: 















Part 1: Aggregates for concrete – Guidance on the use of BS EN 12620 Part 2: Aggregates for bituminous mixtures and surface treatments for roads, airfields and other trafficked areas – Guidance on the use of BS EN 13043 Part 3: Aggregates for mortar – Guidance on the use of BS EN 13139 Part 4: Lightweight aggregates for concrete, mortar and grout – Guidance on the use of BS EN 13055-1 Part 5: Lightweight aggregates for bituminous mixtures and surface treatments and for unbound and bound applications excluding concrete, mortar and grout – Guidance on the use of BS EN 13055-2 Part 7: Armourstone – Guidance on the use of BS EN 13383 Part 8: Aggregates for railway track ballast – Guidance on the use of BS EN 13450 Part 9: Guidance on the use of European test method standards

y p o c

d e s n e c i L

© The British Standards Institution 2013



1

PD 6682-6:2009+A1:2013

PUBLISHED DOCUMENT Presentational conventions The word “should” is used to express recommendations of this Published Document. The word “may” is used in the text to express permissibility, e.g. as an alternative to the primary recommendation of the clause. The word “can” is used to express possibility, e.g. a consequence of an action or an event.

Contractual and legal considerations This publication does not purport to include all the necessary provisions of a contract. Purchasers are responsible for its correct application.

3 1 0 2 n o i I t u S t i t B

Compliance with a Published Document cannot confer immunity from legal obligations.

© , y p o C d e l l o r t n o c n U , 6 1 0 2 / 6 0 / 1 0 , . L . L . W y n a p m o C g n i t c a r t n o C K B H : y p o c d e s n e c i L

2




PUBLISHED DOCUMENT


d e s n e c i L

PD 6682-6:2009+A1:2013 PD 6682-6:2009

Introduction This part of PD 6682 provides guidance on the use of BS EN 13242:2002+A1 in the UK. BS EN 13242:2002+A1 has been amended twice since it was first published in 2002. In 2004, Corrigendum No. 1 corrected the CE Marking information in Annex ZA and amended a note about national regulations for dangerous substances. Amendment No. 1 introduced additional requirements for recycled aggregates and was published in May 2008. BS EN 13242:2002+A1 only covers aggregates and does not refer to other constituents of unbound and hydraulically-bound materials, e.g. selected cohesive materials or fly ash used for fill. BS EN 13242:2002+A1 therefore refers to the constituent aggregates that can be purchased separately and not to the end use product. Accordingly, the specification of aggregates in accordance with BS EN 13242:2002+A1 will only be appropriate in particular cases when not already required by the end use product standard, for example, the Highways Agency’s Specification for Highway Works (SHW) [3]. BS EN 13242:2002+A1 specifies a range of categories for properties to enable purchasers to select appropriate limiting values for the wide range of aggregates used in unbound and hydraulically-bound materials produced in Europe. In most instances, provision is also made for producers to identify a declared value for properties when the value is outside indicated categories. This Published Document recommends limiting values for aggregate properties within the ranges permitted in BS EN 13242:2002+A1. Where possible, these recommended values are equivalent to those specified in the SHW [3]. Specifiers need to define BS EN 13242:2002+A1 categories for properties that are relevant to the particular end use of an aggregate. Some example specifications listing recommended BS EN 13242:2002+A1 aggregate categories for properties of aggregates with particular different end uses are provided in Annex A, Annex B, Annex C, Annex D and Annex E. BS EN 13242:2002+A1 now includes requirements for classification of the constituents of coarse recycled aggregates and indicates that their suitability be assessed in accordance with the regulatory requirements in the place of use. In the UK, this can include conformity with the WRAP Quality Protocol [4]. BS EN 13242:2002+A1 specifies grades in terms of the consistency of the aggregate, with the supplier declaring the typical grading for the aggregate and working to tolerances specified in BS EN 13242:2002+A1. These tolerances are restricted by BS EN 13242:2002+A1 to given values.

1 Scope This part of PD 6682 gives recommendations and guidance on the use in the UK of BS EN 13242:2002+A1, which specifies the properties of aggregates obtained by processing natural, manufactured or recycled materials for hydraulically-bound and unbound materials for civil engineering work and road construction.

© The British Standards Institution © BSI 2009 2013



3

PD 6682-6:2009+A1:2013 6682-6:2009

PUBLISHED DOCUMENT

2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 1 0 2 n o i t u t i t s n I s d r a d n a t

BS EN 932-3, Tests for general properties of aggregates – Part 3: Procedure and terminology for simplified petrographic description BS EN 13242:2002+A1:2007, Aggregates for unbound and hydraulically-bound materials for use in civil engineering work and road construction BS EN 16236, Evaluation of conformity of aggregate 

I S B

i r © B e , y c p ( o , y C

Cd d e e l l l l o r t o n r o t c n n U o , c 8 n 3 : U 2 1 , 3 16 01 2 / 0 32 0 / / 96 10 , n/ o i t 1 u0 t i t , s n . I L s . d r L a . d n W a t S y n h s a i t i p r m B , o n C o s b g i n G i h t a r c a a S r s t s i n M o : C y p o K C B d H e : s y n e p c i o L c d e s n e c i L

3 Overview of BS EN 13242:2002+A1

3.1

3.1.1

General requirements General BS EN 13242:2002+A1 specifies requirements using the following groups of properties: 



geometrical properties, including grading, shape and fines content; mechanical and physical properties, including resistance to fragmentation;



weathering properties, including freeze-thaw resistance;



chemical properties, including sulfate and chloride content.

BS EN 13242:2002+A1 also requires, when requested by the purchaser, the provision of data on other aggregate properties, but without limiting values.

3.1.2

Geometrical properties The following geometrical properties are specified in BS EN 13242:2002+A1 and are usually considered appropriate for aggregates used in hydraulically-bound and unbound materials in the UK. Grading, measured by the washing and sieving test method in BS EN 933-1. Shape of coarse aggregate, measured by determining the flakiness index as specified in BS EN 933-3. Shell content of coarse aggregate, measured by the test method in BS EN 933-7. Fines content, measured as part of the washing and sieving test method in BS EN 933-1. Further details are given in 4.2.

3.1.3

Physical requirements BS EN 13242:2002+A1 specifies requirements for the following physical properties. a)

4



Resistance to fragmentation, measured in accordance with the Los Angeles test method in BS EN 1097-2.


PUBLISHED DOCUMENT

3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

PD 6682-6:2009+A1:2013 PD 6682-6:2009 b)

Resistance to wear of coarse aggregate, measured by determining the micro-Deval coefficient in accordance with BS EN 1097-1.

c)

Particle density, measured in accordance with BS EN 1097-6 and declared on request.

Further details are given in 4.3.

3.1.4

Weathering properties Weathering properties are usually grouped under a characteristic known as “durability”. BS EN 13242:2002+A1 specifies requirements for the following weathering properties, which are usually considered appropriate for aggregates used in hydraulically-bound and unbound materials concrete in the UK. a)

Water absorption, determined using the appropriate test in BS EN 1097-6, used as a screening test.

b)

Resistance to weathering, determined using the magnesium sulfate soundness test in BS EN 1367-2.

Further details are given in 4.4.

3.1.5

Chemical requirements BS EN 13242:2002+A1 specifies requirements for the following properties. a)

Constituents which alter the rate of setting and hardening of hydraulically-bound mixtures, measured in accordance with BS EN 1744-1.

b)

Volume stability of steel slag aggregate, measured in accordance with BS EN 1744-1.

c)

Water-soluble constituents, measured in accordance with BS EN 1744-3.

d)

Water-soluble sulfate content, determined using the test specified in BS EN 1744-1

BS EN 13242:2002+A1 requires that producers declare the results on request. Further details are given in 4.5.

3.2

Constituents of recycled aggregate BS EN 13242:2002+A1 specifies requirements for the proportions of constituent materials in coarse recycled aggregate. Requirements are based on the sorting test specified in BS EN 933-11 and BS EN 13242:2002+A1 requires that producers declare the results on request. For recycled aggregates in the UK, the sorting test is also a requirement of the WRAP Quality Protocol [4]. Further details are given in 4.6. NOTE Categories for the proportions of constituent materials in coarse recycled aggregate were introduced into BS EN 13242:2002 by Amendment No. 1.

c

d e s n e c i L




5

PD 6682-6:2009+A1:2013 6682-6:2009

PUBLISHED DOCUMENT 3.3

Evaluation of conformity BS EN 13242 requires that producers undertake initial type tests

and factory production control in accordance with BS EN 16236 to ensure that the product conforms to BS EN 13242 and to declared values as appropriate. BS EN 16236 requires that producers undertake initial type tests relevant to the intended use to show conformity with BS EN 13242 in the following circumstances:

I S B

, y p o C

b)

where there is a major change in raw materials or processing which can affect the properties of the aggregates.

For recycled aggregates in the UK, evaluation of conformity can also include conformity with quality protocols for the production of aggregates from inert waste (for example, the WRAP Quality Protocol [4]).

d e l l o r t n l o o r c t n n o U c

s n e c i L

to characterize properties for new sources of aggregates;

The results of the initial type tests are documented as the starting point of the factory production control for that material. Factory production control is used to monitor conformity of the aggregates with the relevant requirements and the producer’s declared values.

©

n , U , 6 81 3 : 0 22 1 / 36 1 00 2 / / 31 0 / 0 9 1 , , . n L o i t . u t L i t . s W n I s y d r n a a d p n a m t o S C h s i t g i r n B , i n t o c s a b i r G t h n a r o a C S s K s i B M H : : y y p o p C o c d e sd n e e

a)

Minimum frequencies of test are specified in the requirements for factory production control in BS EN 16236. Further details about evaluation of conformity are given in 4.7. Guidance on the requirements for attestation of conformity to the provisions of the EU Construction Products Directive [2] is given in Clause 5.

4 Requirements of BS EN 13242:2002+A1

4.1

General Each clause in BS EN 13242:2002+A1 that specifies aggregate properties starts with a general subclause, which draws attention to the necessity to specify only those properties relevant to the particular aggregate and end use of the aggregate. Where this is the case the wording “when required” is used. The aggregate size is described in BS EN 13242:2002+A1 in millimetres with the designation d / D, where d is the lower limiting sieve size and D is the upper limiting sieve size. Most of the particle size distribution of an aggregate lies between these two values and requirements for this are specified in BS EN 13242:2002+A1. NOTE Whilst aggregate descriptions are identified as d/D in BS EN 13242:2002+A1, the d and D values appear in the grading categories in the reverse order giving the percentage passing D before giving the percentage passing d, e.g. a 10/20 aggregate with a grading category of GC85/20.

In BS EN 13242:2002+A1, tables of specified requirements allow the purchaser to choose an appropriate “category” for each property. The style of category designation is intended to be self-explanatory and related to the specified limiting value. For example, category FI 35 means that aggregate with a maximum flakiness index value of 35 is required. The style becomes more complex in the case of grading, and careful understanding of the grading requirement tables in

6




PUBLISHED DOCUMENT

PD 6682-6:2009+A1:2013 BS EN 13242:2002+A1 is necessary. For example, category GC85/15 is the grading designation for a coarse aggregate with a minimum 85% passing the D size sieve and a maximum of 15% passing the d size sieve.

3 1 0 2 n o i t u t i t s n I s d r a I d S n B a t S © h s i t , i r y B p e o h C T ) cd ( e , yl pl o o C r d t e l l n o o r t c n n o c U n U , , 86 3 : 1 20 12 3/ 16 00 2 / / 3 1 0 / 0 9 1 , , n . o i L t u . t i L t s . n I W s d y r a n d a n p a t m S o h C s i t i r g B n , i n t o s c b i a G r t h a n r o a C S s s K i B M H : y : p y o p C o d c e d e s n e c i L

An option to use a “no requirement” category is also provided. For example, a fines content category of f NR is included in BS EN 13242:2002+A1 which means that there is no specified requirement for fines content. A category f 3, on the other hand, would require a limiting value of 3% by mass passing a 0.063 mm sieve. A different approach is normally adopted in the UK. When the value obtained for a particular property is outside the indicated limit or categories the producer can provide a declared value. For example, if the resistance to fragmentation of coarse aggregate [measured by the Los Angeles coefficient, LA] exceeds 60, the producer can state the maximum expected value of LADeclared. Thus, if this value were 65, the producer would state LA65 and aggregate purchasers would then determine whether this is adequate for their purposes.

4.2

4.2.1

Geometrical requirements Aggregate size BS EN 13242:2002+A1 specifies the following three options for sieve size ranges for use in the description of aggregate size: a)

basic set;

b)

basic set plus set 1;

c)

basic set plus set 2.

In the UK, aggregates are generally supplied to the basic set plus set 2. The aggregate size designations listed in Table 1 are recommended for use in the UK in unbound and hydraulically-bound materials. Guidance on the grading associated with these aggregate size designations is given in 4.2.3, and guidance on the sieve sizes used to assess the grading is given in 4.2.2.

4.2.2

Sieve sizes BS EN 13242:2002+A1 specifies grading requirements in terms of percentages passing lower d and upper D sieve sizes and in terms of percentages passing sieves with sizes that are multiples or fractions of d and D. When using the BS EN 13242:2002+A1 basic set plus set 2 range of sieve sizes, as has been adopted for use in the UK, some of these multiples and fractions are not exact sieve numbers from the ISO 565 R 20 series. Therefore, footnotes in the BS EN 13242:2002+A1 grading tables give provision for the selection of next nearest sieve sizes in such circumstances. For the UK, a selection of next nearest sieve sizes from the ISO 565 R 20 series is given in Table 2 to cover such eventualities. Table 2 shows how they relate back to the multiples or fractions of the d and D sieve sizes given in the BS EN 13242:2002+A1 basic set plus set 2 range. The sieve sizes given in Table 2 are recommended for use in the UK for aggregates for unbound and hydraulically-bound materials. The gradings in Table 3, Table 4 and Table 5 use these sieve sizes.




7

PD 6682-6:2009+A1:2013 6682-6:2009 Table 1 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o c

d e s n e c i L

PUBLISHED DOCUMENT Recommended BS EN 13242:2002+A1 aggregates Aggregate type

Recommended BS EN 13242:2002+A1 aggregates mm

Coarse aggregate

4/40 4/20 2/14 20/40 10/20 6.3/14 4/10 2/6.3 0/40

All-in aggregate

0/20 0/10 0/6.3 Fine aggregate

0/4 0/4 or 0/2 0/2 or 0/1

NOTE Some specifications for earthworks can require the use of aggregates not listed in this table. Further guidance is given in the SHW [3].

Table 2

Recommended sieves, including next nearest multiples and fractions from the ISO 565 R 20 series

Recommended sieve for UK A)

Sieve sizes in the BS EN 13242:2002+A1 basic set plus set 2 range

mm

2D for D =

1.4D for D =

D /1.4 for D =

D /2 for D =

d /2 for d =

80 63

40 —

— 40

— —

— —

— —

40 31.5

20 14

— 20

— 40

— —

— —

20

10

14

—

40

—

16 14

— 6.3

— 10

— 20

— —

— —

10

—

14

20

20

8 6.3

4 —

— 4

— 10

— 14

— —

4 2.8

2 —

— 2

10 6.3

10 6.3

1

—

—

—

4

1 0.500

— —

— —

— —

— —

2 —

0.250 0.125

— —

— —

— —

— —

— —

0.063

—

—

—

—

—

2

A)

8

mm

6.3

6.3 4

These sieves are multiples or fractions of the d and D sieve sizes specified in the BS EN 13242:2002+A1 basic set plus set 2 range of sieve sizes. However, where the sieves calculated are not the exact sieve numbers in the ISO 565 R 20 series, the next nearest sieve size has been used. 


PUBLISHED DOCUMENT


PD 6682-6:2009+A1:2013 PD 6682-6:2009

4.2.3

4.2.3.1

Grading General General grading requirements for aggregates for use in unbound and hydraulically-bound materials are specified in BS EN 13242:2002+A1. However, it should be noted that BS EN 13242:2002+A1 specifies that testing and declaring geometrical properties are limited according to the particular application at end use or origin of the aggregate. The current method of producing unbound and hydraulically-bound material is to combine various coarse aggregate sizes with one or more fine or all-in aggregate sizes such as to meet the specified grading requirements for the mixed material. There is a near-infinite number of size combinations which can be put together in order to produce any required grading in the finished material, so use of particular specified gradings of either coarse, fine or all-in aggregate is not necessary in the specification of this material. The grading categories in BS EN 13242:2002+A1 should therefore be considered only as categories of convenience that may be used in commercial transactions. Where, for contractual reasons, the grading limits are referenced directly to BS EN 13242:2002+A1 and this part of PD 6682, the grading category along with the grading limits should be selected from Table 3, Table 4 and Table 5. These tables give the recommended BS EN 13242:2002+A1 grading categories for coarse aggregates for the manufacture of coarse, fine and all-in aggregates.

4.2.3.2

Coarse aggregates BS EN 13242:2002+A1 specifies general and additional grading requirements for coarse aggregates. To ensure consistency, the additional requirements give overall limits for the percentage passing the mid-size sieve and the tolerances to be applied about a typical declared value passing the mid-size sieve. The recommended sieve sizes for use in the UK are listed alongside the BS EN 13242:2002+A1 grading limits for coarse aggregates in Table 3.

4.2.3.3

Fine aggregates BS EN 13242:2002+A1 specifies the oversize/undersize requirements for fine aggregates and tolerances to be applied about a declared typical grading. The recommended sieve sizes for use in the UK are listed alongside the BS EN 13242:2002+A1 grading limits for fine aggregates in Table 4.

4.2.3.4

All-in aggregates BS EN 13242:2002+A1 specifies the oversize/undersize requirements for all-in aggregates and tolerances to be applied about a typical grading. The recommended sieve sizes for use in the UK are listed alongside the BS EN 13242:2002+A1 grading limits for all-in aggregates in Table 5.

c

d e s n e c i L




9

PD 6682-6:2009+A1:2013 6682-6:2009 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

4.2.4

PUBLISHED DOCUMENT Shape of coarse aggregate BS EN 13242:2002+A1 requires that the shape of coarse aggregates are determined in terms of the flakiness index in accordance with BS EN 933-3. NOTE The flakiness index test differs from the superseded UK test method in BS 812-105.1 because it is based on different dimensional ratios.

The shape of the coarse aggregate is determined because of its effect on the stability of end use products in which the aggregate is used. In the UK, the shape of the aggregate is not specified because the stability of end use products assessed, instead of the aggregate itself. For instance, the stability of subbases and other hydraulically-bound layers is controlled by specifying, when appropriate, the use of crushed aggregate in accordance with the SHW [3]. It is recommended, therefore, that the category FI NR is adopted. An option to use the shape index specified in BS EN 933-4 is given in BS EN 13242:2002+A1. It is not anticipated that it will be used in the UK and it is recommended that the category SI NR is adopted.

4.2.5

Percentage of crushed or broken particles and totally rounded particles in coarse aggregates In order to ensure adequate mechanical interlock when using crushed gravel aggregate, BS EN 13242:2002+A1 specifies the determination of the percentage of crushed or broken particles in accordance with BS EN 933-5. Category C 50/10 should be adopted, because it ensures adequate mechanical interlock of the material. Aggregates obtained from crushed rock are assumed by BS EN 13242:2002+A1 to have a category C 90/3 and do not require further testing.

4.2.6

Fines content The fines content specified in BS 13242:2002+A1 relates to the percentage passing a 0.063 mm sieve. BS EN 13242:2002+A1 defines a range of fines content categories. The category that should be adopted is dependent on requirements that exist for the end use product into which the coarse, fine or all-in aggregate will be incorporated.

c

d e s n e c i L

10




Licensed Copy: Miss Sarah Gibson, British Standards Institution, 19/03/2013 12:38, Uncontrolled Copy, (c) The British Standards Institution 2013 Licensed copy:HBK Contracting Company W.L.L., 01/06/2016, Uncontrolled Copy, © BSI

Table 3 Recommended BS EN 13242:2002+A1 grading categories and grading tolerance categories for coarse aggregate Recommended 4/40 BS EN 13242:2002+A1 aggregate

4/20

2/14

20/40

10/20

6.3/14

4/10

2/6.3

G C85/15

G C85/15

G C80/20

G C80/20

G C80/20

G C80/20

G C80/20

(GT C20/17.5)

(GT C20/17.5)

(GT C20/15)

(GT C20/15)

(GT C20/15)

(GT C20/15)

(GT C20/15)

—

—

mm G C85/15 Recommended BS EN 13242:2002+A1 (GT C20/17.5) grading/tolerance category

Sieve size

Percentage by mass passing ISO 565 sieve

mm 80

100

100

—

—

98 to 100

—

—

98 to 100

—

—

—

—

40

85 to 99 A)

100

—

80 to 99 A)

100

—

—

—

100

20 to 70 (±15)

—

20

98 to 100

20 to 70 (±17.5)

14

—

10

—

6.3

85 to 99A)

—

—

2

— 0 to 5

1

—

—

—

—

—

—

100

—

98 to 100

20 to 70 (±15)

80 to 99 A)

98 to 100

100

20 to 70 (±15)

80 to 99 A)

—

0 to 20 —

—

— 0 to 5

100

80 to 99A)

0 to 5

20 to 70 (±17.5) — 0 to 15

98 to 100

0 to 20

20 to 70 (±17.5) — 0 to 15

2.8

98 to 100 85 to 99 A)

—

—

4 T h e B r i t i s h S t a n d a r d s I n s t i t u © t i B o S n I 2 0 0 1 3 9

—

63 31.5

©

—

0 to 20 0 to 5

20 to 70 (±17.5)

—

—

—

0 to 15

—

—

—

0 to 5

—

—

—

0 to 20 0 to 5

—

80 to 99A) 20 to 70 (±15) —

0 to 5 —

0 to 20 0 to 5

NOTE The supplier is required to document and, on request, declare the BS EN 13242:2002+A1 grading category and grading tolerance category. The recommended BS EN 13242:2002+A1 grading tolerance values are shown in brackets. A)

The inclusion of 99% instead of 100% is to ensure consistency and to prevent smaller size aggregates being classified as D size aggregate. However, BS EN 13242:2002+A1 specifies that the percentage passing D may be greater than 99% by mass, but in such cases the producer is required to document and declare the typical grading including the sieves D, d , d / 2 and sieves in the basic set plus set 2 intermediate between d and D.



1 1

PD 6682-6:2009+A1:2013 6682-6:2009 Table 4 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 ,

PUBLISHED DOCUMENT

Recommended BS EN 13242:2002+A1 grading categories and grading tolerance categories for fine aggregate, Category G F85 (GT F20)

Recommended BS EN 13242:2002+A1 aggregate

0/4 A)

0/2 A)

0/1 A)

mm Sieve size


mm 8

100

6.3

98 to 100

4

85 to 99 B) (±5)

2.8

—

—

—

—

—

100

—

98 to 100 B)

85 to 99 (±5)

100

2

(±20)

1

—

(±20)

0.5

—

—

(±20)

0.063

(±4)

(±4)

(±4)

98 to 100 85 to 99 B) (±5)


Category GF85 (GT F20).

B)

P U B L I S H E D D O C U M E N T

The percentage of 99% instead of 100% is to ensure consistency and to prevent smaller size aggregates being classified as D size aggregate. However, BS EN 13242:2002+A1 permits the percentage passing D to be greater than 99% by mass, but in such cases the producer is required to document and declare the typical grading including the sieves D, d , d/ 2 and sieves in the basic set plus set 2 intermediate between d and D.

P D 6 6 8 2 6 P : 2 D 0 6 0 6 9 8 + 2 A -1 6 : 2 0 0 1 9 3

PD 6682-6:2009+A1:2013 6682-6:2009 Table 4 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

Recommended BS EN 13242:2002+A1 grading categories and grading tolerance categories for fine aggregate, Category G F85 (GT F20) 0/4 A)

Recommended BS EN 13242:2002+A1 aggregate

0/2 A)

0/1 A)

mm Sieve size


mm 8

100

6.3

98 to 100 B)

4

85 to 99 (±5)

—

—

—

—

100

—

2.8

—

98 to 100

2

(±20)

85 to 99 B) (±5)

1

—

(±20)

0.5

—

—

(±20)

0.063

(±4)

(±4)

(±4)

100 98 to 100 85 to 99 B) (±5)


Category GF85 (GT F20).

B)

The percentage of 99% instead of 100% is to ensure consistency and to prevent smaller size aggregates being classified as D size aggregate. However, BS EN 13242:2002+A1 permits the percentage passing D to be greater than 99% by mass, but in such cases the producer is required to document and declare the typical grading including the sieves D, d , d/ 2 and sieves in the basic set plus set 2 intermediate between d and D.

Table 5 Overall grading limits for all-in aggregates classified by BS EN 13242:2002+A1 category G A80 (GT A20) Sieve size

Percentage by mass passing ISO 565 sieve for all-in aggregate size (d /D)

mm

0/40 A)

0/20 A)

0/10 A)

0/6.3 A)

80

100

—

—

—

—

—

—

—

—

—

—

63

98 to 100

40

80 to 99 B) (±5)

31.5

100

—

98 to 100 B)

20

(±20)

14

—

—

98 to 100

10

—

(±20)

80 to 99 B) (±5)

—

—

—

4

—

—

(±20)

—

2.8

—

—

—

(±20)

0.063

(±4)

(±4)

(±4)

(±4)

6.3

80 to 99 (±5)

100

— 100 98 to 100 80 to 99 B) (±5)

NOTE The recommended BS EN 13242:2002+A1 grading tolerance values are shown in brackets. A)

Category GA90 (GTA20).

B)

The inclusion of 99% in lieu of 100% is to ensure consistency and to prevent smaller size aggregate being classified as D sized aggregate. However, BS EN 123242 specifies that the percentage passing D may be greater than 99% by mass, but in such cases the producer is required to document and declare the typical grading including the sieves D, d , d / 2 and sieves in the basic set plus set 2 intermediate between d and D.

c

d e s n e c i L

PUBLISHED DOCUMENT

12




PUBLISHED DOCUMENT 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

PD 6682-6:2009+A1:2013 PD 6682-6:2009 4.2.7

Fines quality BS EN 13242:2002+A1 contains a normative annex with a selection of requirements to ensure no harmful fines, e.g. clay, are present. In the UK, fines content is considered non-harmful, provided the materials conform to the maximum fines content values specified in BS EN 13242:2002+A1. Two of the conditions in the annex of BS EN 13242:2002+A1 give the option to assess harmful fines content using the sand equivalent or methylene blue tests. These tests are not considered sufficiently precise for the purpose of determining harmful fines content in fine aggregates for unbound and hydraulically-bound materials in the UK. It is recommended that aggregates and filler aggregates are assessed for harmful fines, using either a fines content limit or evidence of satisfactory use.

4.3

4.3.1

Mechanical and physical requirements Resistance to fragmentation of coarse aggregate BS EN 13242:2002+A1 specifies that, when required by the purchaser, resistance to fragmentation in terms of the Los Angeles coefficient is determined in accordance with BS EN 1097-2 and the results declared. Table 6 lists recommended categories for the Los Angeles coefficient maximum values specified in BS EN 13242:2002+A1.

Table 6 Recommended BS EN 13242:2002+A1 categories for the Los Angeles coefficient Use

Recommended BS EN 13242:2002+A1 category

Granular subbase Type 3

LA30

Lower bedding and surround for corrugated steel structures

LA40

Bedding, haunching and pipe backfill and surrounds

LA50

Narrow filter drains and trench fill Gabion filling Drainage layers to reinforced soil and anchored earth structures Starter layers Unbound mixtures for subbase Types 1 and 2 Cement bound granular mixtures (CBGM) Capping layer material

LA50 or LA60 Whilst the Los Angeles test is the reference test for resistance to fragmentation, BS EN 13242:2002+A1 includes an option to assess resistance to fragmentation by determining the impact value in accordance with BS EN 1097-2, which is based on a DIN test method. This alternative test requires the use of special equipment not available in UK and it is therefore recommended that the category SZ NR is adopted.

c

d e s n e c i L




13

PD 6682-6:2009+A1:2013 6682-6:2009 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

4.3.2

Resistance to wear of coarse aggregate BS EN 13242:2002+A1 specifies, when required by the purchaser, the determination of resistance to wear in terms of the micro-Deval coefficient in accordance with BS EN 1097-1. This micro-Deval test is used particularly when interlocking particles rub together in an unbound pavement. In the UK, there is not yet enough experience of this test or values derived from it for it to be used in specifications. Therefore, it is recommended that category MDNR is adopted.

4.3.3

Particle density and water absorption BS EN 13242:2002+A1 requires, when required by the purchaser, the particle density and water absorption of the aggregate to be determined in accordance with BS EN 1097-6 and the results declared. The individual clauses and annexes of BS EN 1097-6 contain different test methods that reflect the traditions of a number of countries. The wire basket method for large coarse aggregate, the pycnometer method for coarse aggregate and the pycnometer method for fine aggregate are appropriate for use in the UK.

4.4

4.4.1

Durability requirements “Sonnenbrand” of basalt Sonnenbrand is a type of rock decay that is tested in order to determine the susceptibility of certain types of young basalt aggregates, found in some European countries, to degradation through mineralogical instability. This phenomenon is not experienced in the UK and it is not anticipated that this test will be applied in the UK. It is recommended that category SBNR is adopted, although further information should be obtained on the susceptibility of imported basalt aggregates to sonnenbrand.

4.4.2

Durability – Water absorption and magnesium sulfate soundness BS EN 13242:2002+A1 specifies a means for assessing the durability of an aggregate by determining its freeze-thaw resistance, using BS EN 1097-6 as a screening test, followed by either a freeze-thaw test as specified in BS EN 1367-1 (based on a DIN method) or a magnesium sulfate soundness test as specified in BS EN 1367-2. The recommended approach in the UK is for aggregates to be considered satisfactory without further testing if they conform to water absorption category WA242. Aggregates with water absorption greater than 2% should be considered satisfactory for general purposes if they conform to the magnesium sulfate soundness category MS 35.

4.5

4.5.1

Chemical requirements Acid-soluble sulfate BS EN 13242:2002+A1 specifies three categories for the acid-soluble sulfate content of an aggregate. The categories vary depending on which type of blast-furnace slag aggregate is used. Recommended BS EN 13242:2002+A1 categories for UK aggregates are given in Table 7.

c

d e s n e c i L

PUBLISHED DOCUMENT

14




PUBLISHED DOCUMENT

PD 6682-6:2009+A1:2013 PD 6682-6:2009

Table 7 Recommended BS EN 13242:2002+A1 categories for acid-soluble sulfate content 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

Aggregate

Recommended BS EN 13242:2002+A1 category

Aggregates other than air-cooled blast-furnace slag

AS 0.8

Air-cooled blast-furnace slag

AS 1.0

4.5.2

Total sulfur BS EN 13242:2002+A1 specifies limits for the maximum total sulfur content to 1% by mass for aggregates other than air-cooled blast-furnace slag. A maximum limit of 2% by mass is required if air-cooled blast-furnace slag is to be used. For current UK aggregate sources where the measured value of total sulfur content during initial testing is 0.1% by mass or less, it is not necessary to undertake further testing. In this case, the total sulfur content can be assumed to conform to the 1% maximum limit unless there is a significant change in the quarry deposit. Pyrrhottite, an unstable form of iron sulfide, is an uncommon constituent of aggregate in the UK. Therefore, unless specific information on its presence is known, the special precautions indicated in BS EN 13242:2002+A1 are unlikely to be needed in the UK.

4.5.3

Constituents which alter the rate of setting and hardening of hydraulically-bound mixtures The requirements of BS EN 13242:2002+A1 apply where constituents which alter the rate of setting and hardening of hydraulically-bound mixtures are suspected. However, with current processing practices in the UK, the significant presence of such substances is likely to be rare and testing is not normally necessary.

4.5.4

Constituents which affect the volume stability of blast-furnace and steel slags for unbound aggregates BS EN 13242:2002+A1 specifies requirements for constituents which affect the volume stability of air-cooled blast-furnace slag and steel slag.

4.5.5

Water soluble sulfate content of recycled aggregate BS EN 13242:2002+A1 specifies, when required by the purchaser, the determination and declaration of the water soluble sulfate content of recycled aggregates in accordance with BS EN 1744-1. It is unlikely that this requirement will be used in the UK because other requirements for sulfate content provide an adequate level of control. NOTE This requirement was introduced into BS EN 13242:2002 by Amendment No. 1.

The “hot water” test method for the water soluble sulfate content of recycled aggregate is different to that for natural and artificial aggregates. The two methods can be expected to give different results.

c

d e s n e c i L




15

PD 6682-6:2009+A1:2013 6682-6:2009 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0

PUBLISHED DOCUMENT 4.6

BS EN 13242:2002+A1 specifies, when required by the purchaser, the determination and declaration proportions of constituent materials in coarse recycled aggregate in accordance with a visual sorting test in BS EN 933-11. This allows the producer to declare conformity with the categories for constituents of coarse recycled aggregate in BS EN 13242:2002+A1. The constituents of coarse recycled aggregate are divided into the groups listed in Table 8; the list of groups is similar, but not identical, to the established UK method in Clause 710 of the SHW [3]. NOTE This requirement was introduced into BS EN 13242:2002 by Amendment No.1.

Some examples of how the categories may be used are given in Annex F. Table 8

Constituents of coarse recycled aggregate

Constituent

Description

Rc

Concrete, concrete products, concrete masonry units, mortar

Ru

Unbound aggregates, natural stone, hydraulically-bound aggregate

Rb

Clay masonry units (brick and tile), calcium silicate masonry units, aerated non-floating concrete

Ra

Bituminous materials

Rg

Glass

X

Other, including: cohesive clay and soil, non-floating wood, plastic and rubber, gypsum plaster, miscellaneous, including metals

4.7

4.7.1

General conformity necessary for producers to demonstrate that their products conform to BS EN 13242. These requirements are specified in BS EN 16236 and are divided into:

y n a p i r m B o , C n

a)

initial type tests;

b)

factory production control. 

These are part of the procedure for attestation of conformity to be used for demonstrating conformity with the requirement of the EU Construction Products Directive [2]. As is explained in the scope to BS EN 13242:2002+A1, unfamiliar materials from secondary sources placed on the market as aggregates might be covered by national regulations for dangerous substances.

4.7.2

K B H : y p o c

d e s n e c i L

Evaluation of conformity

BS EN 13242 contains requirements for the evaluation of

, . L . L . W

o s g b i n Gi t h a c r a a S r t s s n i o M : C y

Constituents of coarse recycled aggregates

Initial type tests Initial type testing is a series of tests carried out on the aggregate,

relevant to its intended end use, before it is first placed on the market. This testing is used to identify the categories specified within BS EN 13242 and BS EN 16236 to which the aggregate conforms. 

16




PUBLISHED DOCUMENT

PD 6682-6:2009+A1:2013 BS EN 13242 requires initial type testing for new sources, if there is

a major change in raw materials, or when the aggregate is to conform to a new requirement for which it has not previously been tested.  n o i t u t i t s n I s d r a

Where aggregate purchasers require additional data or properties for particular uses of the aggregate, these should be requested prior to ordering, allowing sufficient time for testing.

4.7.3

Factory production control Factory production control is the means of defining the quality

system which producers are required to operate to demonstrate ongoing conformity of their product to BS EN 13242. Detailed requirements for factory production control are given in BS EN 16236. 

I

S e B h T ) © c ( , , y y p o p C o C d e l l d o r e t nl ol c o n r U , t 8 n 3 : o 2 c 1 n 3 U 1 0 2 , / 36 0 / 1 90 12 , n/ 6 o i t 0 u t / i t 1 s n0 I s , d r . a L d . n a L t . S W h s i t y i r n B a , n p o m s o b i C G h g a r n ai S t s c s i a M r : t y n p o o C C d e K s B n H e

For recycled aggregate, factory production control is also part of the WRAP Quality Protocol [4]. NOTE The WRAP Quality Protocol [4] requires the delivery documentation to state that the aggregate was produced under a system of factory production control conforming to the protocol.

4.8

Designation and description Aggregates should be identified in the following terms.

4.9

a)

Source and producer; where an aggregate is rehandled in a depot, both the original source and depot should be given.

b)

Type of aggregate; BS EN 932-3 should be consulted for specific guidance, as required by BS EN 13242:2002+A1. Essentially, when a rock or mineral is predominant (more than 50%), its presence is reflected in the name of the material, e.g. “quartzose” sand and “basaltic” gravel. When no single type is predominant, the material is said to be heterogeneous and its name can include the most frequent types, e.g. heterogeneous “siliceous” gravel and heterogeneous “quartzo-feldspathic” sand. For the UK, shortened local versions continue to be adopted and full petrographic descriptions made available on request to the producer. The phrase “recycled aggregate” should be used for recycled aggregate.

c)

Constituent categorization for recycled aggregate.

d)

Aggregate size.

Marking and labelling Delivery tickets are required to contain their serial number, the aggregate designation, the date of dispatch and the European Standard identifier, BS EN 13242:2002+A1. For recycled aggregate, the delivery documents should also state that the aggregate was produced to a quality protocol for the production of aggregates from inert waste (for example, the WRAP Quality Protocol [4]).

: y p o c

d e s n e c i L




17

PD 6682-6:2009+A1:2013 6682-6:2009


5 Provisions of the EU Construction Products Directive BS EN 13242:2002+A1, Annex ZA, addresses the provisions of the EU Construction Products Directive [2]. Both BS EN 13242:2002+A1 and its Annex ZA were produced under a Mandate [1] given by the European Commission and the European Free Trade Association to CEN. Annex ZA is described as “informative”, but its requirements become mandatory to ensure conformity with the Mandate [1] and/or where CE marking is applicable to aggregates. Clauses in BS EN 13242:2002+A1 (identified in Annex ZA) indicate the characteristics that are subject to regulatory requirements for the specified application in one or more European Member States. There is no obligation to determine or declare a value for a characteristic in a Member State where there is no regulatory requirement for that characteristic, unless it is subject to a “threshold” value. Conformity with these identified requirements confers a prescription of fitness of the aggregate and fillers for the intended uses indicated in BS EN 13242:2002+A1. However, to meet the provisions of the EU Construction Products Directive [2] fully, aggregates are also required to conform to any transposed European legislation and national laws relating to any dangerous substances referred to in the clauses of BS EN 13242:2002+A1. Within the notes in BS EN 13242:2002+A1, Annex ZA, reference is made to the type of compliance requirement, for example: 

pass/fail threshold value;



categories;



declared value.

BS EN 13242:2002+A1 also details the allowed levels for attestation of conformity as “2+” or “4”. The requirements of the two levels are summarized in Table 9. Table 9

Levels of attestation of conformity in accordance with the EU Construction Products Directive [3] and referred to in BS EN 13242:2002+A1

Tasks

Conformity attestation EU numbering system 2+

4

Factory production control

Yes

Yes

Further testing of samples taken at a factory according to a prescribed test plan

Yes

No

Initial type testing

Yes

Yes

Certification of factory production control

Yes

No

Surveillance of factory production control

Yes

No

Tasks for the producer

Tasks for third party notified accreditation body

In the UK, the level of attestation for aggregates for unbound and hydraulically-bound materials is “4”. For other applications, when the purchaser has particular concerns that the integrity of the aggregate will have a major impact on either of the following, they should adopt appropriate contract specific quality assurance procedures or

c

d e s n e c i L

PUBLISHED DOCUMENT

18




PUBLISHED DOCUMENT

PD 6682-6:2009+A1:2013 PD 6682-6:2009 acceptance testing regimes for other applications to give the required degree of confidence in:


a)

safety when in use;

b)

other performance properties of an installation (for example, concrete applications involving the storage or containment of dangerous substances).

It is not appropriate to expect higher attestation of conformity requirements, as these are general national requirements related to the demonstration of fitness to be placed on the market for general use and not readily flexible to meet contract-specific needs. Such contract-specific quality assurance procedures or acceptance testing regimes should follow the same basic format as those in BS EN 13242:2002+A1. BS EN 13242:2002+A1 also identifies the requirements for CE marking and labelling in Annex ZA. The UK and two other EU Member States do not currently consider that there is a mandatory requirement to CE mark products. Consequently, there is no current legal requirement to CE mark aggregates supplied within the UK or to or from Ireland and Sweden. CE marking will be required for aggregates supplied to or within other Member States translated into the language of the Member State supplied. If producers decide to CE mark their aggregates, they need to comply with the indicated requirements. Where the CE mark identifies a particular characteristic, the supplier is required to indicate the category or declared value appropriate to the aggregate. The purchaser is responsible for confirming that the declaration of properties on the CE mark conforms to their particular requirements. It should also be noted that, where aggregates are placed on the market in a European Member State where there is no regulatory requirement for a particular characteristic, the supplier is not required to determine the performance for this characteristic. In this case “no performance determined” may be stated in the CE marking information. BS EN 13242:2002+A1, Annex ZA, also provides a link with national regulations for dangerous substances. Procedures to ensure conformity to national regulations are still being developed.

c

d e s n e c i L




19

PD 6682-6:2009+A1:2013 6682-6:2009

Annex A (informative) 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

PUBLISHED DOCUMENT

Example specification for pipe bedding, haunching and surrounding material An example format of a preferred specification for aggregates for pipe bedding, haunching and surrounding material is given in Table A.1.

Table A.1

Example specification for pipe bedding, haunching and surrounding material

BS EN 13242:2002+A1 category

Property Grading Nominal pipe diameter Types B, F and S, in accordance with the SHW [3] for sizes:  140

mm

>140 mm but  400 mm

2/14 or 4/20

> 400 mm

2/14, 4/20 or 4/40, 4/10, 2/14, 10/20, 20/40

Nominal pipe diameter Types A and Z, in accordance with the SHW [3] for sizes:  140

mm

0/1, 0/2, 0/4, 0/10

> 140 mm but  400 mm

0/1, 0/2, 0/4, 0/10, 0/20

> 400 mm

0/1, 0/2, 0/4, 0/10, 0/20, 0/40

Fines content

In accordance with the grading requirements of the end use material as specified in the SHW [3]

Resistance to fragmentation

LA50

Acid-soluble sulfate content: aggregates other than air-cooled blast-furnace slag

AS 0.8

air-cooled blast-furnace slag

AS 1.0

Total sulfur: aggregates other than air-cooled blast-furnace slag

 1%

by mass


 2%

by mass

Volume stability of blast-furnace and steel slags: air-cooled blast-furnace slag

Free from dicalcium silicate and iron disintegration in accordance with BS EN 13242:2002+A1

steel slag

Site specific A)

NOTE Specifying values for all other properties described in BS EN 13242:2002+A1 is not necessary because they are not appropriate to the particular application at end use or origin of the aggregate. A)

Insert appropriate category from BS EN 13242:2002+A1 following discussions between the producer and purchaser.

c

d e s n e c i L

10/20

20




PUBLISHED DOCUMENT

Annex B (informative) 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

PD 6682-6:2009+A1:2013 PD 6682-6:2009

Example specification for backfilling of trenches and filter drains An example format of a preferred specification for aggregates for backfilling of trenches and filter drains is given in Table B.1.

Table B.1

Example specification for backfilling of trenches and filter drains

Properties

Category to BS EN 13242:2002+A1

Grading and fines content



LA50


AS 0.8


AS 1.0


 1%

by mass


 2%

by mass



steel slag

Site specific A)

NOTE Specifying values for all other properties described in BS EN 13242:2002+A1 is not necessary because, as specified in BS EN 13242:2002+A1, they are not appropriate to the particular application at end use or the origin of the aggregate. A)

Insert appropriate category from BS EN 13242:2002+A1 following discussion between the producer and purchaser.

c

d e s n e c i L




21

PD 6682-6:2009+A1:2013 6682-6:2009

Annex C (informative) 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

PUBLISHED DOCUMENT

Example specification for fill material An example format of a preferred specification for aggregates for fill material is given in Table C.1.

Table C.1

Example specification for fill material

Properties





Select from LA40, LA50, LA60 or LANR dependent on end use as specified in the SHW [3]


Select from AS 0.8 or AS NR dependent on end-use


Select from AS 1.0 or AS NR dependent on end-use

aggregates other than air-cooled blast-furnace slag

Select from  1% by mass or no requirement dependent on end-use


Select from  2% by mass or no requirement dependent on end-use

Total sulfur:

Organic content Durability: water absorption to BS EN 1097-6, wire basket method

WA242

for WA > 2%, magnesium sulphate soundness

Select from MS NR, MS 18, MS 25 or MS 35 dependent on end-use



steel slag

Site specific A)



c

d e s n e c i L

Select from no requirement (NR) or conformity with BS EN 13242:2002+A1 dependent on end-use

22




PUBLISHED DOCUMENT

Annex D (informative) 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

PD 6682-6:2009+A1:2013 PD 6682-6:2009

Example specification for unbound subbases for road pavements An example format of a preferred specification for aggregates for unbound mixtures used in the subbase of road pavements is given in Table D.1.

Table D.1 Example specification for unbound subbases for road pavements Properties





LA50

Magnesium sulfate soundness value

MS 35

Particles with crushed or broken surfaces (gravel only)

C 90/3 As specified in the SHW [3] for unbound mixtures for subbase


AS 0.8


AS 1.0


 1%

by mass


 2%

by mass



steel slag

Site specific A)



c

d e s n e c i L




23

PD 6682-6:2009+A1:2013 6682-6:2009

Annex E (informative) 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

PUBLISHED DOCUMENT

Example specification for cement bound granular mixtures (CBGM) An example format of a preferred specification for aggregates for CBGM is given in Table E.1.

Table E.1 Example specification for cement bound granular mixtures (CBGM) Properties





LA50 for CBGM B and CBGM C as specified in the SHW [3] LANR for cement bound granular mixture CBGM A as specified in the SHW [3]

Magnesium sulfate soundness value

MS NR for CBGM A as specified in the SHW [3] Acid-soluble sulfate content: aggregates other than air-cooled blast-furnace slag

AS 0.8


AS 1.0

Total sulphur: aggregates other than air-cooled blast-furnace slag

 1%

by mass


 2%

by mass



steel slag

Site specific A)



c

d e s n e c i L

MS 25 for CBGM B and CBGM C as specified in the SHW [3]

24




PUBLISHED DOCUMENT

PD 6682-6:2009+A1:2013 PD 6682-6:2009

Annex F (informative) 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

F.1

Examples of specifications using categories for the constituents of coarse recycled aggregates Unbound mixtures for subbase The specification for unbound mixtures used for the subbase layers of roads is set out in the SHW [3] using aggregate requirements from BS EN 13242:2002+A1 and grading requirements from BS EN 13285. The specification also includes requirements for the maximum permitted proportions of selected components of recycled aggregate.

F.2

Type 1 and Type 2 unbound mixtures for subbase Type 1 unbound mixture is specified for general use; Type 2 is made with lower grade aggregates for use on lightly trafficked roads. Table F.1 illustrates the equivalent categorization for Type 1 and Type 2 unbound mixtures for subbase.

Table F.1 Categorization of recycled aggregate for use in Type 1 and Type 2 unbound mixtures for subbase Description

Constituent code SHW [3] requirement BS EN 13242:2002+A1 (by mass) category

Concrete, concrete products, mortar

Rc + Ru + Rb

100% max.

Rc Declared

Unbound aggregates, natural stone etc.

RcugNR

Masonry units (brick and tile), aerated non-floating concrete etc.

RbDeclared

(no requirement)


Ra

50% max.

Ra50-

Glass

Rg

25% max.

Rg25-

Other

X

1.0% max.

X 1-

Floating materials (measured by volume)

FL

Not specified

FL5- (measured as cm 3 /kg)

F.3

Type 4 unbound mixtures for subbase Type 4 unbound mixture is specified for general use where the proportion of asphalt arisings is greater additional requirements to control water content and compaction. Table F.2 illustrates the equivalent categorization for Type 4 unbound mixtures for subbase.

c

d e s n e c i L




25

PD 6682-6:2009+A1:2013 6682-6:2009

PUBLISHED DOCUMENT

Table F.2 Categorization of recycled aggregate for use in Type 4 unbound mixtures for subbase 3 1 0 2 n o i t u t i t s n I s d r a d n a t S h s i I t i r S B B e h © T ) , c ( y , p y p o o C C dd e l e l o l r t l n o o r c n t U n , o 8 c 3 : n 2 U 1 3 1 , 06 2 / 1 30 0 / 2 9/ 1 , 6 n0 o i t / u1 t i t 0 s n , I . s d L r . a d L n . a t W S h y s i n t i a r p B , m n o o C s b i g G n h i a r t a c S a s r s i t M n : o y p C o C K d B e H s n : e y c i p L o

Description

Constituent code SHW [3] requirement BS EN 13242:2002+A1 (by mass) category

Concrete, concrete products, mortar

Rc Declared

Unbound aggregates, natural stone etc.

RcugNR (no requirement) Rc + Ru + Rb

Masonry units (brick and tile), aerated non-floating concrete etc.

RbDeclared


Ra

50% min.

Ra50

Glass

Rg

25% max.

Rg25-

Other

X

1.0% max.

X 1-

Floating materials (measured by volume)

FL

Not specified

FL5- (measured as cm3 /kg)

c

d e s n e c i L

50% max.

26




PUBLISHED DOCUMENT


d e s n e c i L

PD 6682-6:2009+A1:2013 PD 6682-6:2009

Bibliography Standards publications For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. BS 812-105.1, Testing aggregates – Part 105: Methods for the determination of particle shape – Section 105.1: Flakiness index BS EN 933-1, Tests for geometrical properties of aggregates – Part 1: Determination of particle size distribution – Sieving method BS EN 933-3, Tests for geometrical properties of aggregates – Part 3: Determination of particle shape – Flakiness index BS EN 933-4, Tests for geometrical properties of aggregates – Part 4: Determination of particle shape – Shape index BS EN 933-5 , Tests for geometrical properties of aggregates – Part 5: Determination of percentage of crushed and broken surfaces in coarse aggregate particles BS EN 933-7, Tests for geometrical properties of aggregates – Part 7: Determination of shell content – Percentage of shells in coarse aggregate BS EN 933-11, Tests for geometrical properties of aggregates – Part 11: Classification test for the constituents of coarse recycled aggregate BS EN 1097-1, Tests for mechanical and physical properties of aggregates – Part 1: Determination of the resistance to wear (micro-Deval) BS EN 1097-2 , Tests for mechanical and physical properties of aggregates – Part 2: Methods for the determination of resistance to fragmentation BS EN 1097-6, Tests for mechanical and physical properties of aggregates – Part 6: Determination of particle density and water absorption BS EN 1367-1, Tests for thermal and weathering properties of aggregates – Part 1: Determination of resistance to freezing and thawing BS EN 1367-2, Tests for thermal and weathering properties of aggregates – Part 2: Magnesium sulfate test BS EN 1744-1 , Tests for chemical properties of aggregates – Part 1: Chemical analysis BS EN 1744-3, Tests for chemical properties of aggregates – Part 3: Preparation of eluates by leaching of aggregates BS EN 13285, Unbound mixtures – Specification ISO 565 Test sieves – Metal wire cloth, perforated metal plate and electroformed sheet – Nominal size of openings

Other publications [1]

COUNCIL OF THE EUROPEAN COMMUNITIES. M/125: Mandate to CEN and CENELEC concerning the execution of standardisation work for harmonised standards on aggregates, Brussels: 1998.




27

PD 6682-6:2009+A1:2013 6682-6:2009


d e s n e c i L

28



PUBLISHED DOCUMENT [2]

EUROPEAN COMMUNITIES. Council Directive of 89/106/EEC. 21 December 1988 on the approximation of laws, regulations and administrative provisions of the Member States relating to construction products. Luxembourg: Office for Official Publications of the European Communities (EUR-OP).

[3]

HIGHWAYS AGENCY. Manual of contract documents for highway works, Volume 1: Specification for Highway Works (SHW). London: TSO. 1)

[4]

WASTE AND RESOURCES ACTION PROGRAMME. The Quality Control Protocol for the production of aggregates from inert waste. Banbury: WRAP. 2)

1)

Document maintained at and available from http://www.standardsforhighways.co.uk/mchw/vol1/index.htm

2)

Available from http://www.wrap.org.uk



This page deliberately left blank

Part 6 Aggregates for Unbound and Hydraulically Bound Materials

Recommend Documents