Civil Engineering - Soil Mechanics and Foundation Engineering - Discussion
Discussion Forum : Soil Mechanics and Foundation Engineering - Section 1 (Q.No. 7)
7.
The internal molecular attraction of a soil, the cohesion
Discussion:
22 comments Page 2 of 3.
Kapil said:
9 years ago
Cohesion is a soil property. So wouldn't it be constant ?
Secondly with increase in compactness shear strength increase as,
s = c+ sigma*tan(theta).
Secondly with increase in compactness shear strength increase as,
s = c+ sigma*tan(theta).
Imtiyaz Ahmed said:
9 years ago
It is internal molecular attraction which resists the shear of the material. It decreases as the moisture content decreases and is more in well-compacted clay.
So, C is right.
So, C is right.
Madhu said:
9 years ago
I think it is depend on type of soil and water content.
Pappu said:
9 years ago
No @Imtiyaz Ahmed.
It decreases as if water content increases towards liquid limit.
It decreases as if water content increases towards liquid limit.
Pappa said:
9 years ago
@Jayaram.
The ucc is not unconfined cohesion test. But unconfined compression test.
The ucc is not unconfined cohesion test. But unconfined compression test.
Pawan joshi said:
8 years ago
Just like a soil with higher over consolidation ratio has high cohesion, more compaction or confinement results in more cohesion imagine a soil at a ground surface and at 10 m depth which will have more cohesion.
Saurabh said:
7 years ago
I think option D is correct.
Sam k said:
5 years ago
The phenomenon of increase or decrease the moisture content can happen in the sand also. But sand is not cohessive. So the most appropriate answer is option C.
Abhinandan kumar said:
5 years ago
If we increase the water content in soil then up to a certain point cohesion increase but after increasing more and water moisture content, soil ultimately losses all its cohesive property as well as its shear strength.
So, the answer is C.
So, the answer is C.
(2)
Bilal said:
5 years ago
Soils with higher water content tend to have lower shear strength capacity, while cohesion of soil increases at a small amount of water but decreases very rapidly after its optimal moisture content is reached.
(1)
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