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A sample of soil has liquid limit 50%, plastic limit 25%, shrinkage limit 20% and moisture content 35%. The consistency index is _________
- a)30/25
- b)15/25
- c)10/25
- d)5/25
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
A sample of soil has liquid limit 50%, plastic limit 25%, shrinkage li...
Liquid limit, WL = 50%
Plastic limit, WP = 25%
Moisture content, W = 35%
Consistency index,
Most Upvoted Answer
A sample of soil has liquid limit 50%, plastic limit 25%, shrinkage li...
Liquid Limit, Plastic Limit, Shrinkage Limit and Moisture Content
Liquid limit, plastic limit and shrinkage limit are terms used in soil mechanics to define the water content or moisture content of a soil. The liquid limit is the minimum water content at which a soil behaves like a liquid. The plastic limit, on the other hand, is the minimum water content at which a soil behaves like a plastic. The shrinkage limit is the water content at which further loss of moisture will not cause a decrease in the volume of soil.
Consistency Index
The consistency index is a measure of the consistency of a soil. It is calculated as the difference between the liquid limit and the plastic limit, divided by 25. The formula for calculating the consistency index is as follows:
Consistency index = (Liquid limit - Plastic limit) / 25
Calculation of Consistency Index
Given that the liquid limit of the soil is 50%, the plastic limit is 25%, and the moisture content is 35%, we can calculate the consistency index using the above formula.
Consistency index = (50 - 25) / 25
Consistency index = 25 / 25
Consistency index = 1
Therefore, the consistency index of the soil is 1.
Conclusion
The correct option is B, 15/25. This option is incorrect as the consistency index is not equal to 15/25 but 1. The formula for calculating the consistency index is the difference between the liquid limit and plastic limit divided by 25, which in this case is equal to 1.
Liquid limit, plastic limit and shrinkage limit are terms used in soil mechanics to define the water content or moisture content of a soil. The liquid limit is the minimum water content at which a soil behaves like a liquid. The plastic limit, on the other hand, is the minimum water content at which a soil behaves like a plastic. The shrinkage limit is the water content at which further loss of moisture will not cause a decrease in the volume of soil.
Consistency Index
The consistency index is a measure of the consistency of a soil. It is calculated as the difference between the liquid limit and the plastic limit, divided by 25. The formula for calculating the consistency index is as follows:
Consistency index = (Liquid limit - Plastic limit) / 25
Calculation of Consistency Index
Given that the liquid limit of the soil is 50%, the plastic limit is 25%, and the moisture content is 35%, we can calculate the consistency index using the above formula.
Consistency index = (50 - 25) / 25
Consistency index = 25 / 25
Consistency index = 1
Therefore, the consistency index of the soil is 1.
Conclusion
The correct option is B, 15/25. This option is incorrect as the consistency index is not equal to 15/25 but 1. The formula for calculating the consistency index is the difference between the liquid limit and plastic limit divided by 25, which in this case is equal to 1.
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A sample of soil has liquid limit 50%, plastic limit 25%, shrinkage limit 20% and moisture content 35%. The consistency index is _________a)30/25b)15/25c)10/25d)5/25Correct answer is option 'B'. Can you explain this answer?
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