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If an unconfined compressive strength of 4 Kg/ cm2 in the natural state of clay reduced by fourtimes in the remoulded state, then its sensitivitywill be
- a)1
- b)2
- c)4
- d)8
Correct answer is option 'C'. Can you explain this answer?
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If an unconfined compressive strength of 4 Kg/ cm2 in the natural stat...
Unconfined Compressive Strength and Sensitivity of Clay
Unconfined Compressive Strength:
The unconfined compressive strength of soil is the maximum axial compressive stress that a cylindrical sample of soil can carry in an unconfined condition. It is usually expressed in kg/cm² or kPa.
Sensitivity of Clay:
The sensitivity of clay is defined as the ratio of unconfined compressive strength of remoulded soil to that of natural soil. It is a measure of the susceptibility of the soil to volume change due to disturbance.
Solution:
Given, unconfined compressive strength (UCS) of natural state clay = 4 kg/cm²
UCS of remoulded state clay = 4/4 = 1 kg/cm² (reduced by four times)
Sensitivity = UCS of remoulded state clay/UCS of natural state clay
= 1/4
= 0.25
= 4 (since sensitivity is the reciprocal of the reduction in strength)
Therefore, the sensitivity of the clay is 4.
Conclusion:
The sensitivity of clay can be calculated by comparing the unconfined compressive strength of natural and remoulded soil. In this case, the sensitivity was found to be 4, which indicates that the soil is highly susceptible to volume change due to disturbance.
Unconfined Compressive Strength:
The unconfined compressive strength of soil is the maximum axial compressive stress that a cylindrical sample of soil can carry in an unconfined condition. It is usually expressed in kg/cm² or kPa.
Sensitivity of Clay:
The sensitivity of clay is defined as the ratio of unconfined compressive strength of remoulded soil to that of natural soil. It is a measure of the susceptibility of the soil to volume change due to disturbance.
Solution:
Given, unconfined compressive strength (UCS) of natural state clay = 4 kg/cm²
UCS of remoulded state clay = 4/4 = 1 kg/cm² (reduced by four times)
Sensitivity = UCS of remoulded state clay/UCS of natural state clay
= 1/4
= 0.25
= 4 (since sensitivity is the reciprocal of the reduction in strength)
Therefore, the sensitivity of the clay is 4.
Conclusion:
The sensitivity of clay can be calculated by comparing the unconfined compressive strength of natural and remoulded soil. In this case, the sensitivity was found to be 4, which indicates that the soil is highly susceptible to volume change due to disturbance.
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If an unconfined compressive strength of 4 Kg/ cm2 in the natural stat...
Sensitivity equal to q(u) undisturbed divided by q(u) remoulded =4/1=4
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If an unconfined compressive strength of 4 Kg/ cm2 in the natural state of clay reduced by fourtimes in the remoulded state, then its sensitivitywill bea)1b)2c)4d)8Correct answer is option 'C'. Can you explain this answer?
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