SRIMUKHA

Bulk Density(coarse Aggregate)

Code: This test is done as per IS: 2386 (Part III) – 1963.

Sample Preparation:

i) Take the required amount of test sample form the bulk sample using any sample reduction method.
ii) The test is normally carried out on dry material, but when bulking tests are required, material with a given percentage of moisture may be used.

Procedure for Compacted Bulk Density:

i) Measure the volume of the cylindrical metal measure by pouring water into the metal measure and record the volume “V” in litre.
ii) Fill the cylindrical metal measure about one-third full with thoroughly mixed aggregate and tamp it 25 times using tamping bar.
iii) Add another layer of one-third volume of aggregate in the metal measure and give another 25 strokes of tamping bar.
iv) Finally fill aggregate in the metal measure to over-flowing and tamp it 25 times.
v) Remove the surplus aggregate using the tamping rod as a straightedge.
vi) Determine the weight of the aggregate in the measure and record that weight “W” in kg.

Procedure for Loose Bulk Density:

i) Measure the volume of the cylindrical metal measure by pouring water into the metal measure and record the volume “V” in litre.
ii) Fill the cylindrical measure to overflowing by means of a shovel or scoop, the aggregate being discharged from a height not exceeding 5 cm above the top of the measure
iii) Level the top surface of the aggregate in the metal measure, with a straightedge or tamping bar.
iv) Determine the weight of the aggregate in the measure and record the weight “W” in kg.