09-SAMSS-088

Materials Syste Syst em Specif pecific ica ati tion on 09-SAMSS-088

28 February 2005

Aggregates for Concrete Civil Standards Committee Members Al-Mehthel, M.H., Chairman Al-Idi, S.H., Vice Chairman Abu-Adas, H.A. Abulhamayel, I.A. Addas, K.M. Al-Darwish, A. Al-Ismail, A.A. Al-Khunaini, A.M. Al-Moumen, A.A. Al-Saffar, S.A. Grosch, J.J. Kassam, E.M.

Saudi Saudi Aramco Aramc o Desk DeskTop Top Standards Standards Table of Contents

I II III IV

Scope............................... Scope............................................. ........................... ................ ... 2 Conflicts and Deviations.......................... Deviations................................. ....... 2 References................................ References................... .......................... ..................... ........ 2 Modifications to ASTM C33........................... C33............................. 3

Previous Issue: 30 May May 2001 Next Planned Update: 1 March March 2010 Revised paragraphs are indicated in the right margin Primary contact: Mohammed H. Al-Mehthel on 873-8582

Copyright©Saudi Aramco 2009. All rights reserved.

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Document Responsibility: Responsibility: Civil Issue Date: 28 February 2005 Next Planned Update: 1 March 2010

I

09-SAMSS-088 09-SAMSS-088 Aggregates for Concrete

Scope This specification defines the requirements for grading and quality of fine and coarse aggregate (other than lightweight aggregate) for use in concrete.

II

III

Confli cts and Deviatio Deviatio ns A.

Any conflicts between this specification and other applicable Saudi Aramco Materials System Specifications (SAMSSs), Engineering Standards (SAESs), Standard Drawings (SASDs), or industry standards, codes, and forms shall be resolved in writing by the Company or Buyer Representative through the Manager, Consulting Services Department of Saudi Aramco, Dhahran.

B.

Direct all requests to deviate from this specification in writing to the Company or Buyer Representative, who shall follow internal company procedure SAEP-302 and forward such requests to the Manager, Consulting Services Department of Saudi Aramco, Dhahran.

References The selection of material and equipment, and the design, construction, maintenance, and repair of equipment and facilities covered by this specification shall comply with the latest edition of the references listed below, unless otherwise noted. A.

Saudi Aramco References Saudi Aramco Engineering Procedure SAEP-302

B.

Instructions for Obtaining a Waiver of a Mandatory Saudi Aramco Engineering Requirement

Industry Codes and Standards American Society for Testing and Materials ASTM C33

Standard Specification for Concrete Aggregates

ASTM C114

Standard Test Methods for Chemical Analysis of Hydraulic Cement

British Standards Institution BS 812 : Part 118

Methods for Determination of Sulphate Content

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IV


Modifi cation s to ASTM C33 C33 Aggregate stockpiles shall be arranged and used in a manner to avoid excessive segregation and to prevent contamination with other materials or with other sizes of like aggregate. The ground or foundation on which aggregates are stockpiled shall be sloped, hard and free of foreign materials, which could cause contamination of aggregates. The ready mixed concrete supplier shall handle aggregates in a manner manner to minimize segregation and accumulation of fines. The following paragraph numbers refer to ASTM C33 - 03, "Standard Specification for Concrete Aggregates" which is part of this specification. The text in each paragraph below is an addition, exception, modification, or deletion to ASTM C33 as noted. Paragraph numbers not appearing in ASTM C33 are new paragraphs to be inserted in numerical order. 4.1.1

(Addition) Supplier Qualification Requirements: The Purchaser shall inspect, sample and test all sources sources of aggregates prior to to purchase. Samples tested at the first inspection will determine the acceptability of the supplier's source of aggregate. The first inspection shall enable the supplier to be considered as a potential source of coarse aggregate. Purchasing Requirements: A minimum stockpile stockpile of 500 m³ of each aggregate size shall be committed by the suppliers and accepted. No additional materials shall shall be permitted to be stockpiled thereon. Aggregate stockpiles which have been committed and accepted shall be designated for Purchaser. No equipment shall operate on the stockpile. Samples shall be taken at random and at a frequency of at least one sample per 200 m³ of aggregate to be shipped, but not less than one sample per month. Any material failing to comply with the Specification shall be rejected. The ground on which the aggregates are stockpiled shall be hard and free of foreign materials. materials. Loading shall be done by an experienced operator. The loader bucket shall not cut into the underlying foundation on which the aggregates are stockpiled.

5.1

(Addition) Manufactured Manufactured sand shall be washed prior to batching with water that contains no more than 3500 35 00 parts per million (ppm) of total dissolved solids (TDS).

7.1

(Exception) Delete this paragraph in its entirety.

7.1

(Exception) The limits of deleterious substances in fine aggregates shall conform to Table A of this standard.

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7.3

(Exception) Fine aggregate shall not contain any materials that are deleteriously reactive with the alkalies in the cement in an amount sufficient to cause excessive expansion of mortar or concrete.

8.1

(Exception) Only magnesium sulfate shall be used for the soundness test.

8.2


8.3


11.1


11.1

(Exception) The limits of deleterious substances in coarse aggregates shall conform to the requirements shown in Table A of this standard. Table A – Maximum Allowable, % by Weight of Aggregates *

Limits for Deleterious Substances, Harmful Salts, and Physical Property Requirements of Aggregate for Concrete. Concrete. This Table cancels cancels and supersedes the the related tables shown in (1) ASTM C33.

Coarse

Fine

Frequency of Test

1. Clay Lumps & Friable Particles

5.0

3.0

Monthly

2. Gradation & Materials finer than No. 200 Sieve

5.0

5.0

Weekly

3.

6

6.0

40

NA

Raw 1 & 2 Combined

4. Abrasion (Los Angeles)

Monthly

5. Water Absorption

2.5*

6. Acid Soluble Chlorides as Cl (ASTM C114)

0.03

0.06

BI-Monthly

7. Acid Soluble Sulfates as SO3 (ASTM C114 or BS 812 : Part 118)

0.40

0.40

Bi-Monthly

25

25

Bi-Monthly

8. Magnesium Sulfates Soundness

Monthly

Commentary Note: Coarse aggregates can be cleaned from dust in order to meet Table A by water, vacuum suction or air blast. blast. Total dissolved solids in the washing water water shall not exceed 3500 ppm and chlorides shall not exceed 1000 ppm.

11.2

(Exception) Course aggregate shall not contain any materials that are deleteriously reactive with the alkalies in the cement in an amount sufficient to cause excessive expansion of mortar or concrete.

11.3


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12

28 February 2005


(Addition) The percentages of acid soluble, chlorides and sulfates shall be determined in accordance with ASTM C114.

Revision Summary Revised the "Next Planned Update". Reaffirmed the contents of the document, and reissued with minor changes.

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09-SAMSS-088

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