deepana - Questions

 The specific gravity of cement:

Definition :

The ratio of the weight of a given volume of cement to the weight of an equal volume of water is called specific gravity of cement.

IS Code of specific gravity test is IS 2720 part 3

Apparatus required :

• Le-Chatelier flask
• Weighing balance of 0.1 Gram accuracy

Sample materials required :

• Cement
• Kerosene

Important key points :

1. The specific gravity of kerosene is 0.79 gram per centimetre cube
2. The specific gravity of water is 1 gram per centimetre cube

Interesting point :

The reason behind kerosene is used to find out the specific gravity of cement and not the water is given below;

• In general, to calculate the specific gravity of the material, we use water.
• In the case of cement, we use kerosene for finding specific gravity of it.
• Cement hydrates and forms calcium oxide when it reacts with water
• Cement won’t show any type of reaction when it mixed with kerosene. Hence kerosene is used to find the specific gravity of cement instead of water.

I hope you learn some new concepts from my answer. Thank you.