# Awam-PARTICLE SIZE ANALYSIS (SIEVING METHOD)

May 1st, 2015
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To determine the particle size distribution of a soil sample by sieving process. This analysis can be used to predict ground water movement and soil classification. THEORY:Particle size distribution analysis is used in engineering soil classification universally.

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AwamEXPERIMENT TITLE: PARTICLE SIZE ANALYSIS (SIEVING METHOD)OBJECTIVE: To determine the particle size distribution of a soil sample by sieving process. This analysis can be used to predict ground water movement and soil classification. THEORY:Particle size distribution analysis is used in engineering soil classification universally. This is because the particle size plays an important role in the selection of soil in construction. It is also used to predict soil water movement. This analysis can be described quantitatively according to different soil mass of particles sizes. Percentage of soil sizes can be defined as the mass of soil retained on each sieve divided by total mass of soil sample. The percentage for a certain sieve size is defined as 100% minus the total percentage of all soil retained on the sieve. The percentage graph vs. sieve size is drawn on the semi-logarithm to obtain the soil grading curve. From the particle distribution graph, particles size like D10, D30, and D60 can be obtained. D refers to the size or diameter of soil particle and the values 10, 30 and 60 refer to the percentage of particle of smaller sizes. D10 refers to the effective size for the soil. Indication of soil distribution size is given by constant coefficient, that is:Cu = D60/D10Value of Cu is a measure of uniformity of soil.Coefficient of curvature (Cc) is a measure of curve shape between D60 and D10 and is given as,Cc= (D30)2________(D60) (D10)APPARATUS:1. Se

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