Study on Consolidation and Correlation with Index Properties Of Different Soils in Manipur Valley

It is essential to know the rate of compression of clay for design purposes. Determination of the value of coefficient of consolidation cv which gives the rate at which compression of soil layer takes place can be done by conducting routine one-dimensional consolidation tests. Since this test is time consuming, it is desirable to predict the value of cv by correlating with some simple index property, especially for preliminary assessment. From literature, it can be seen that researchers have attempted to correlate cv with various index properties like liquid limit (Lambe and Whitman, 1979), plasticity and liquidity index (Carrier, 1985),void ratio at the liquid limit and in situ effective overburden pressure (Raju et al., 1995), shrinkage index (Sridharan and Nagaraj, 2004) etc. To obtain a correlation of cv with index properties for the soil of Manipur, routine onedimensional consolidation tests were conducted on five different types of soils collected from different places of Manipur. From the present experimental study on undisturbed soil specimens, it is found that cv has a better correlation with the liquid limit.