Explain procedure to find specific gravity of the fine aggregate in laboratory.

Explain procedure to find specific gravity of the fine aggregate in laboratory.
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Procedure to find specific gravity of fine aggregate in laboratory: 1. Take 2000 gm. aggregate sample in wire basket. Immerse the basket in water completely and take it out to remove entrapped air. Repeat it 20-25 times. 2. Keep this aggregate basket in water for 24 hours. Weigh the aggregate and basket when still immersed in water as B1 gm. 3. Now, remove the basket. Take out aggregate and weigh empty basket in water as B2 gm. 4. Calculate the mass of saturated surface dry aggregate in water as B= (B1- B2) gm. 5. Keep the aggregate exposed to air for 10 minutes and take the weight of air dried aggregate as ‘A’ gm. 6. Now, keep the air dried aggregate in oven at temperature of 1100C for 24 hours. Take the weight of complete oven dried aggregate as ‘C’ gm. 7. Calculate the specific gravity of given aggregate as Ga= C / (A-B). 8. Repeat all above steps for two more samples to get average specific gravity of aggregate.
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