TESTS ON aggregate
Specific Gravity (Fine Aggregate)
Code: This test is done as per IS: 2386 ( part 3): 1963.
Procedure:
- i) Take about 500g of sample and place it in the pycnometer.
- ii) Pour distilled water into it until it is full.
- iii) Eliminate the entrapped air by rotating the pycnometer on its side ,the hole in the apex of the cone being covered with a finger.
- iv) Wipe out the outer surface of pycnometer and weigh it (W)
- v) Transfer the contents of the pycnometer into a tray , care being taken to ensure that all the aggregate is transferred .
- vi) Refill the pycnometer with distilled water to the same level .
- vii) Find out the weight (W1)
- viii) drink water from the sample through a filter paper .
- ix) Place the sample in oven in a tray at a temperature of 100ºC to 110º C for 24±0.5 hours ,during which period ,it is stirred occasionally to facilitate drying .
- x) Cool the sample and weigh it (W2)
Uses:
To determine the Specific gravity fine aggregate.