Civil Engineer Notebook

SILT CONTENT TEST OF FINE AGGREGATE AIM: To determine the Silt content in the Fine aggregate. APPARATUS REQUIRED: Glass Measuring jar                                                                                               PROCEDURE: A measuring jar of (200 – 500ml) should be half filled with the sample. Water is added to the jar up to the 3/4th of its full capacity. The jar with water should be shaken for at least 30seconds, so that all the silt particle get mixed with water and jar is kept in undisturbed condition for two hour. After the clay and silt content settle down, the height of the clay and silt standing over the fine aggregate should be measured. ads CALCULATION: Percentage of Silt Content = (The height of the sand –...

 PARTICLE SIZE DISTRIBUTION TEST - SIEVE ANALYSIS AIM: To determine the Particle Size Distribution of the Aggregate by Sieve Analysis. APPARATUS REQUIRED: 1. Set of IS Sieve           2. Weighing Balance PROCEDURE: 1. The test sample is dried to a constant weight at a temperature of 110 ± 5oC and weighed. 2. The sample is sieved by using a set of IS Sieves for 5 minutes. 3. On completion of sieving, the material on each sieve is weighed. 4. Cumulative weight passing through each sieve is calculated as a percentage of the total sample weight. 5. Fineness modulus is obtained by adding cumulative percentage of aggregates retained on each sieve and dividing the sum by 100. OBSERVATION: Tabulation for Coarse Aggregate: SI.No Sieve Size Weight Retained Cumulative Weight Retained Cumulative % Retained Cumulative % Passing 1 80     ...