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Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion

Discussion Forum : Soil Mechanics and Foundation Engineering - Section 1 (Q.No. 33)
Soil Mechanics and Foundation Engineering
33.
Pick up the correct statement from the following :
In soils, the flow index indicates variation in shear strength with water content
Liquid limit minus plastic limit, is known as plasticity index of the soil
Plastic limit minus shrinkage limit, is known as shrinkage index of the soil
The ratio of the plasticity index to the flow limit, is known as toughness index of the soil
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
23 comments Page 1 of 3.
Sasmita Nayak said:   6 years ago
Toughness Index = plasticity index/flow index.
Shrinkage Index = Liquid limit-shrinkage Limit.
Except (C),(D) all are correct.
Sudip said:   7 years ago
I think the correct answer is "The ratio of the plasticity index to the flow index, is known as toughness index of the soil".
Tanu said:   7 years ago
I agree with you @Pradipto Sarkar.

All are correct except option (c).

As, shrinkage index =liquit limit -shrinkage limit.
Shariful (AMIEB) said:   6 years ago
The ratio of the plasticity index to the flow index (not flow limit), is known as the toughness index of the soil.
John said:   5 years ago
Shrinkage index = Plastic limit - shrinkage limit.

Refer C.Venkathramaiah text on Geotechnical Engineering.
(1)
Pradipto Sarkar said:   8 years ago
All the options are correct except (c).

Shrinkage index = liquid limit - shrinkage limit.
Pradnya Gaikwad said:   1 decade ago
The difference between liquid limit & shrinkage limit is called shrinkage index.
Mann said:   10 years ago
The difference b/w plastic limit & shrinkage limit is called shrinkage index.
Surykant said:   4 years ago
Except option D, all are correct.

Toughness index = Plasticity index/Flow index.
(1)
Maaz said:   2 years ago
Option C is wrong.

Because, Shrinkage index = liquid limit - Shrinkage limit.
(1)
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