Sieve Analysis of Fine and Course Aggregates

Course Name: Materials Technology (CIV 1101) Name of course: Title: Sieve analysis of fine and course aggregates Aim: To determine the various sizes of articles in a samle of aggregate Date submitted: 11th !cto"er# $01% Date conducted: $&th 'ovem"er# $01% Lab Report:  '! 

1

Introduction

The follo*ing is a la" reort "ased on determining the various sizes of articles in a samle of aggregates This rocess *as done for course and fine aggregates involving e+ual distri"ution through rifle "o, method and assing the aggregates through t*o different sets of sieves *ith various sieve sizes corr esonding to the tye of aggregates used and o"taining the values for the aggregate masses that had  "een retained *ithin each sieve - grading curve can then "e o"tained "y finding the ercent assing and lotting them on the semi log curve# sho*ing the distri"ution of the ercentage of aggregates assing against the sieve num"er *as lotted

Theoretical Information 2

.rain size is needed for the classification of soils The data o"tained from lotting curves can "e used to design filters for earth dams and to determine suita"le soils for road construction and other "uilding ro/ects and also the grain size can determine the *ater flo* through various soil tyes and allo*ing roer allocation of "uilding sites ercent retained  (*eight retained2total *eight) 3 1004 ercent assing  (revious ercentage assing 5ercent retained) 4 assing initial  1004 5 4 retained for each sieve) 610# 6%0 and 670 can "e o"tained from tracing the 104# %04 and 704 assing resectively to the curve and reading the horizontal a,is to o"tain the value for each 8ineness modulus 9 (num"er of sieves used 3 100)  sum of 4 assing );2100

3

Materials

-ggregates5 course and fine

4

Equipment

  Sieve 1 8or course: sieve no 5 &# 10# 1<# $# %# 0# &0# 100# and an $ 8or fines: sieve size5 = ₄># ??># @>#??># =??># ??>and an ᶟ

ᶟ

Aifle Bo, To loading electronic "alance Ma,imum caacity: 5 1g  %0g Minimum caacity: 5 100g -"solute uncertainty: 5 -u D0001g

5

Experimental rocedure

1 The samle *as assed through the rifle "o, in order to distri"ute the  articles easily $ - samle of $00g of course aggregates *as *eighed % The sieves *ere o"tained and laced in descending order < The samle *as laced in the to sieve and covered  The samle *as shaen for % minutes 7 The samle remaining in each of the sieves and the an *as *eighed and recorded & This rocedure *as again follo*ed for the fine aggregates using $000 g E - grading curve of the results *as lotted

6

Experimental results

SFIVF 'GMBFA

HFI.T AFT-I'F6 (g)

&

001

10

001

1<

00<

$

0$$

%

0$E

0

0E<

&0

0%1

100

0&

-'

01&

T!T-J

!"#

%$Table !& 8or Course -ggregates5 T!T-J HFI.T5 $000g

Sieve Size  =?> ??> @> ??>  =??> ??> an Total

Height Aetained (g) 0$E $1< 11 0KK 01< 00< 00$ '"!!(

ᶟ

ᶟ

Table )& 8or fine aggregates5 T!T-J HIF.T5 $00g Anal*sis

SFIVF

HFI.T

ercent

ercent

CGMGJ-TIVF

 'GMBFA 

AFT-I'F6

Aetained

assing

4

(g)

(4)

(4)

7

& 10 1< $ % 0 &0 100 -' T+TAL

001 001 00< 0$$ 0$E 0E< 0%1 0& 01& !"#

%$0 0& $1 117 1%$ <%1 17$ %7 K0 !,,",

KK KEE K7& E1 &1K $EE 1$7 K0 0

0 1$ %% 1<K $E1 &1$ E&< K10 1000 1000

Table (: sho*s the ercent retained and the ercent assing each sieve in the

course aggregate analysis ercent Joss 00$2$ 3 1004 $74 8ineness modulus  $KE$

Sieve Size

Height Aetained

ercent Aetained

ercent assing

 =?> ??> @> ??>

(g) 0$E $1< 11 0KK

(4) 171<&
(4) E$%K< %%$KK $707 17E0

ᶟ

8

 =??> ??>  an Total ᶟ

01< 00< 00$ '"!!(

%$1K 1K11 11&$0 !,,",,,

1%7%1 11&$0 0 1000

Table $: sho*s the ercent retained and the ercent assing each sieve in the fine

aggregate analysis ercent Joss 172$ 3 1004 1& 8ineness modulus  <1 The grading curve *as lotted using the calculations made for the ercentage retained in "oth ta"les < and  against the sieve num"er

Discussion

The course and fine curves have varying uniformity The fine aggregates curve sho*s a gradual clim" im ercent indicating a fairly even distri"ution of aggregate sizes *hile the course aggregate curve sho* an indent *ithin its clim"ing indicating that there *as no even distri"ution and having a larger num"er of aggregates retained in num"er 0 sieve The values for sieves lotted on the course aggregate and fine aggregate log grahs *ere used to find 610 # 6%0 and 6 70 and these values *ere 00$% #001& and 0007 resectively for fine aggregates and 071# 0<$ and 01% resectively for course aggregates # using these values a 9

num"er of use arise  The 610 value indicates Fffective size (FS) This along *ith the uniformity coefficient (GC)# found "y dividing 670 "y 610 and can rovide information for usage for the filtration sand in the "io filter or can indicate certain samles for areas *ith a secific aggregate size and this *as <7 for course and %E for fine aggregate  610# 6%0# and 670 *ere found "y using the ercent assing and using a horizontal to inoint the value of each 6eending on the distance  "et*een t*o oints and the sloe of the curve the distri"ution of aggregate sizes and decisions on if filtering can "e o"tained The fineness modulus o"tained tells if  the aggregate *as course or fine and the fineness modulus corresonded to each aggregate

References 1 LSieve analysis test> htt:22***utaedu2ce2geotech2la"2Main22sieve2

Aetrieved: 10: &am# 11th !cto"er# $01% $ Ja"   handout

10

Appendices

th

-i.ure ':  The sieve stac for "oth fine and course aggregates ($&  'ovem"er# $01%) 11

-i.ure /: electronic "alance *ith course aggregates ($& th 'ovem"er# $01%) Lab report 0 )

Name of course: Fngineering materials (CIV 111) Title: Soundness of cement Aim: To determine the soundness of a cement aste "y measuring its e,ansion "y the Je Chatalier method

Date erformed: $
Name of student: a"lo .omes RE2 0: 1%20K020$&7 12

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