Consider the following statements:1. Coefficient of consolidation norm...
From Taylor’s formula, we have,
For full consolidation i.e. U= 100%. will more or less be a constant.
Thus, larger the value of coefficient of consolidation, smaller it takes for full consolidation to occur.
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Consider the following statements:1. Coefficient of consolidation norm...
Coefficient of Consolidation and its Relation to Liquid Limit
- Coefficient of consolidation is a measure of how quickly a soil can settle or consolidate under a load.
- It is defined as the rate at which pore water pressure dissipates in a soil specimen during consolidation testing.
- The coefficient of consolidation is influenced by various factors such as soil type, void ratio, degree of saturation, and hydraulic conductivity.
- One of the factors that affect the coefficient of consolidation is the liquid limit of clay.
Statement 1: Coefficient of consolidation normally increases with decreasing liquid limit of clay.
- The liquid limit of a soil is the moisture content at which the soil changes from a plastic state to a liquid state.
- Soils with a higher liquid limit are generally more plastic and have smaller pore sizes, which make it more difficult for water to flow through.
- As a result, soils with a higher liquid limit tend to have lower coefficients of consolidation.
- On the other hand, soils with a lower liquid limit are less plastic and have larger pore sizes, which allow water to flow more easily.
- Therefore, soils with a lower liquid limit tend to have higher coefficients of consolidation.
- Hence, statement 1 is correct.
Statement 2: The larger the value of coefficient of consolidation, the longer it takes for full consolidation to occur.
- This statement is incorrect.
- A higher coefficient of consolidation means that the soil can settle or consolidate more quickly.
- Therefore, the larger the value of the coefficient of consolidation, the shorter the time it takes for full consolidation to occur.
- Hence, statement 2 is incorrect.
Conclusion:
- Statement 1 is correct as the coefficient of consolidation normally increases with decreasing liquid limit of clay.
- Statement 2 is incorrect as the larger the value of coefficient of consolidation, the shorter it takes for full consolidation to occur.