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Foundation Engineering

Soil Exploration

Consider the ...

Question

Consider the following statements:
1. Increase in volume of a soil sample without external constraints on submergence in water is termed as the 'free swell of soil.'
2. Clay soil rich in montmorillonite exhibits very low swelling characteristic.
3. Generally, free swell of soil sample ceases when its water content reaches the plastic limit.
Which of these statements are correct?

A

1 and 2

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B

1 and 3

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C

2 and 3

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D

1, 2 and 3

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Solution

The correct option is B 1 and 3
Free swell or differential free swell, also termed as tree swell index, is the increase in volume of soil without any external constraint when subjected to submergence in water. It is determinedas per IS:2720 (Part XL) - 1977.

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Q. Consider the following statements:
1. Illite the mineral largely responsible for the swelling and shrinkage behaviour of clayey soils.
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Which of the above statements are correct?

Q. Which of the following statement(s) is/are 'INCORRECT'?

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2. Larger N-value indicates the larger angle of friction in cohesionless soil.

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Q. Consider the following statements:
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