OBJECT OF EXPERIMENT
The object of the experiment is to determine the Specific Gravity of Cement by Specific Gravity Bottle. Specific Gravity of cement is the ratio of the mass of unit volume of cement at a stated temperature to the mass of the same volume of gas free kerosene at a stated temperature.
1. Weighing balance
2. Specific Gravity Bottle
1. Weight empty Specific Gravity Bottle.
Weight of Empty Specific Gravity Bottle = ……………….. (W1)
2. Fill the half Specific Gravity Bottle with cement and weight it.
Weight of Specific Gravity Bottle + Cement = ……………….. (W2)
3. Now fill the remaining half portion of Specific Gravity Bottle with Kerosene oil and weight it.
Weight of Specific Gravity Bottle + Cement + Kerosene = ……………….. (W3)
4. Now empty the Specific Gravity Bottle and wash it properly. Then again fill the bottle completely with Kerosene oil and weight it.
Weight of Specific Gravity Bottle + Kerosene = ……………….. (W4)
Calculate the Specific Gravity of Cement using the following formula :
SPECIFIC GRAVITY = (W2 – W1)/(W2 – W1) – (W3 – W4) * 0.79
WHERE, 0.79 = Specific Gravity of Kerosene oil.
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