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Sieve Analysis of Aggregates

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SIEVE ANALYSIS
Sieve analysis helps to determine the particle size distribution of the coarse and fine aggregates.This is done by sieving the aggregates as per IS: 2386 (Part I) – 1963. In this we use different sieves as standardized by the IS code and then pass aggregates through them and thus collect different sized particles left over different sieves.

The apparatus used are –
i) A set of IS Sieves of sizes – 80mm, 63mm, 50mm, 40mm,31.5mm, 25mm, 20mm, 16mm, 12.5mm, 10mm, 6.3mm,4.75mm, 3.35mm, 2.36mm, 1.18mm, 600µm, 300µm, 150µm and 75µm.
ii) Balance or scale with an accuracy to measure 0.1 percent of the weight of the test sample.
The weight of sample available should not be less than the weight given below:-

sieve-analysis-for-aggregate-testing

The sample for sieving should be prepared from the larger sample either by quartering or by means of a sample divider.

Procedure to determine particle size distribution of Aggregates.
i) The test sample is dried to a constant weight at a temperature of 110 + 5oC and weighed.

ii) The sample is sieved by using a set of IS Sieves.

iii) On completion of sieving, the material on each sieve is weighed.

iv) Cumulative weight passing through each sieve is calculated as a percentage of the total sample weight.

v) Fineness modulus is obtained by adding cumulative percentage of aggregates retained on each sieve and dividing the sum by 100.

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Reporting of Results
The results should be calculated and reported as:
i) the cumulative percentage by weight of the total sample

ii) the percentage by weight of the total sample passing through one sieve and retained on the next smaller sieve, to the nearest 0.1 percent. The results of the sieve analysis may be recorded graphically on a semi-log graph with particle size as abscissa (log scale) and the percentage smaller than the specified diameter as ordinate.

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Comments
  • virendra kumar July 30, 2013 at 4:44 am

    sir i want to know that what is precautions of sieve analysis of stone chip (coarse aggregates)

    • Einstein February 20, 2017 at 5:18 am

      Select aggregate that’ll not damage the sieve while it’s been shaked

  • Noel January 12, 2014 at 2:57 pm

    Can you please post more about course aggregate, I want to know more.

  • Gyalbo tamang August 2, 2014 at 12:37 am

    I want to know more about aggregate

  • rajesh saini April 27, 2015 at 11:03 pm

    I want to know passing % of aggregate

  • Abikoye Soji Sunday December 5, 2015 at 1:40 am

    I like this site and I want to be receiving mails concerning new innovations in aggregate mix and preparation

  • suraj May 28, 2016 at 12:31 am

    Give in detail regarding course aggregate seive analyses.

  • kishore mandala June 9, 2016 at 7:09 am

    Requirements of Aggregates for Wet Mix Macadam
    40mm-35%,20mm-20%,10mm-20% and stone dust-25%.

  • manoj kumar October 16, 2016 at 9:27 pm

    I want to know that mix design proportion for M25 concrete.

    • Akshay Mitra August 27, 2017 at 8:07 am

      1:1:2

  • mira cosgrove December 21, 2016 at 9:59 am

    May i know why is the usage of equal amount of sand and rough aggregates are not suitable for all concrete mixture ? and what are the benefits of aggregates level segregation ? thank you.

  • Rajab September 1, 2017 at 4:49 am

    this website is really useful.

  • Post a comment

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