Tuesday, 9 January 2018

Sieve Analysis Of Soil 

INTRODUCTION

Sieve analysis of different types of soil is necessary to know the percentage of material of different size in it. Each type of soil contains materials of different size & properties. By Sieve analysis we can break the soil sample in different size of particles & hence we can know the percentage of materials of different size. Each type of soil has a limit for each size of material, which can be checked by sieve analysis.

Sieve Analysis Of Soil For Granular Sub Base

APPARATUS

A set of IS Sieves for gradation of soil for GSB (75mm, 53mm, 26.5mm, 4.75mm, 75 micron, pan)

Weight Ballance

Observation Sheet

PROCEDURE

A Representative sample of soil will be taken for sieve analysis of soil.Take weight of Sample & note it on Observation sheet.Now Arrange the sieves in decreasing order.Sieve the soil sample with the sieves & note down the weight retained on each sieve on observation sheet.Calculate the % of weight retained on each sieve, passing of material on observation sheet

RESULT

If Your soil sample passed 100% from 75mm sieve then it means that your GSB is of grade-I

If Your soil sample passed 100% from 53mm sieve then it means that your GSB is of grade-II

If Your soil sample passed 100% from 26.5mm sieve then it means that your GSB is of grade-III

Check the desired limits for each size of material on observation sheet.

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