Describe about the Penetration resistance values for which liquefaction is unlikely to occur under any Conditions.
Describe about the Penetration resistance values for which liquefaction is unlikely to occur under any Conditions.
The term liquefaction in soil deposits can be described as the reduction of shear strength due to pore pressure build up in the granular soils. The shear strength of cohesion less soils depends mainly upon the angle of internal friction and the effective stress acting on the soil skeleton and can be expressed as:
The variables that influence the liquefaction of soil is basically the presence of ground water, particle size distribution and in-situ relative density of the soil, effective confining stress and amplitude and duration of shaking. In soils with a high percentage of fine-grains, such as clays, the rate of build up of excess pore water pressures is much slower than that in sands and therefore liquefaction is much less probable. In very coarse-grained soils such as gravels, the excess pore water pressures are generally rapidly dissipated and again liquefaction is less probable. Generally sandy soils have the greatest susceptibility to liquefaction.
Step by step
Solved in 2 steps with 3 images
