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Maximum water content at which reduction in water will not cause decrease in volume of soil mass is called...
liquid limit
plastic limit
Shrinkage limit
plasticity index
Shrinkage limit
The shrinkage limit is defined as the maximum water content at which any further reduction in water does not result in a corresponding reduction in the volume of the soil mass. At this limit, the soil is considered to be fully saturated.
The shrinkage limit is defined as the maximum water content at which any further reduction in water does not result in a corresponding reduction in the volume of the soil mass. At this limit, the soil is considered to be fully saturated.
wsтАЛ=(MdтАЛVтИТVdтАЛтАЛтЛЕ╧БwтАЛ+G1тАЛ)├Ч100 тАФ Relationship between shrinkage limit and soil parameters
As a soil sample dries, water in the pores is replaced by air. Above the shrinkage limit, the loss of water is directly proportional to the reduction in soil volume. At the shrinkage limit, the soil grains come into contact such that the soil structure becomes rigid, and the remaining water exists only within the voids. Further evaporation leads to the entry of air into the pores rather than a contraction of the soil skeleton.
At the shrinkage limit, the degree of saturation (S) is 100%.
It represents the transition between the semi-solid and solid states in the consistency limits (Atterberg limits).
It is primarily used in geotechnical engineering to assess the swelling and shrinkage potential of soils.
Useful for predicting potential volume changes in clayey soils.
Essential for soil classification based on consistency.
Laboratory determination requires precise measurement of soil volume, often using mercury displacement.
Sensitive to soil preparation methods.
Foundation design in expansive soils (e.g., Black Cotton Soil).
Earthwork construction control.
Liquid Limit (LL): Water content at which soil passes from liquid to plastic state.
Plastic Limit (PL): Water content at which soil passes from plastic to semi-solid state.
Plasticity Index (PI): The numerical difference between the Liquid Limit and the Plastic Limit (PI=LLтИТPL).
C is correct тАФ The shrinkage limit is the lowest water content at which a soil remains fully saturated; below this point, volume remains constant.
Remember the Atterberg limits order: Shrinkage Limit < Plastic Limit < Liquid Limit. Questions often test the physical state of soil between these boundaries.
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