Write step by step procedure to determine specific gravity of soil by pycnometer in laboratory.

Write step by step procedure to determine specific gravity of soil by pycnometer in laboratory.
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1 Answer

Answer :

1. Clean the pycnometer and dry it, find the mass of pycnometer, brass cap and washer accurate to 1g. say M1

2. Put about 200gm to 400gm of wet soil sample in pycnometer and find its mass with its cap say M2.

3. Fill the pycnometer with water to its half of its height and mix it thoroughly and more water and stir it and take is mass say M3.

4. Empty the pycnometer clean it and fill it with clean water till it top of cap and find its weight say M4.

5. The specific gravity is calculated by 

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