Experimental Study on Liquefaction of Saturated Sand Contained a Little Clay.

Experiments on the liquefaction of the saturated sand contained a little clay, were carried out, in order to clarify the effect of the cohesion and the clay contents on liquefaction. Soils used in this experiment are Shingu coarse sand contained a clay at the rate of 5～15%. The results of this experiment are follows. (1) In the cohesive sand, occurrence of the liquefaction determind simply by the ratio (τ_d-c)/σ_v' (τ_d : repeated shear stress, c : cohesion, σ_v' : initial confining pressure). (2) In this experiments, the liquefaction of the sand contained clay at the rate of 20% over, is difficult to occurrence.