How to Find Specific gravity of cement

Specific gravity of cement


The specific gravity of cement is the ratio of the weight of a given Volume of substance to the weight of an equal volume of water. It is a mere number and it denotes how many times a substance is heavy as water Specific gravity of substance=wt density of a substance/wt density of water To find the specific gravity of cement, it is required to find the weight of a certain volume cement and the weight of an equal volume of water. 

As cement reacts with water its specific gravity is determined with reference to a non reactive liquid like kerosene Specific gravity of cement with respect to kerosene=wt of cement/wt of an equal volume of kerosene To find the specific gravity of kerosene with respect to water=wt of kerosene/wt of equal volume of water The specific gravity of cement is the calculation by multiplying specific gravity of cement with respect to kerosene with specific gravity of kerosene with respect to water

Procedure

1.   Clean dry and weigh specific gravity bottle
2.      Take certain quantity of cement (about one fourth of the bottle)in the bottle and weigh(w2)

3.      Pour kerosene over the cement to fill the bottle and find the total weight(w3)

4.      Clean the bottle thoroughly with kerosene and fill the bottle with kerosene and weigh (w4)

5.      Finally clean the bottle with water and weigh(w5)

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