Effect of Fine Content on Resisting Liquefaction Potential of Sandy Soil

Abstract

Liquefaction is a phenomena that occurs most commonly in saturated fine-grained soils during severe earthquakes, resulting in infrastructure damage. It has been discovered that liquefaction happens not just in fine sand but also in sand that contains some fine particles. The influence of fines concentration on liquefaction resistances of sandy soils was investigated using stress-controlled cyclic triaxial testing. For all of the samples, first liquefaction is reported as failure and evaluated at a frequency of 1 Hz. Failure can also be defined in terms of the peak to peak strain (2 per cent, 5%, etc.) that a sample experiences when subjected to cyclic loading. The fine content was used to determine the impact of fines content on liquefaction resistance in local sand. Clean sand and sand combined with various combinations of fines, such as 0%, 5%, 10%, 20%, and 30% by weight, were used in this investigation. The percentage fines and shear stress ratio were the two most important factors in this study (CSR). The results demonstrate that reducing fine content a significant impact on the rate of pore water pressure development under cyclic loading. With the addition of fines content up to 20%, the amount of pore water pressure increases more than base sand. Later, the tendency reversed, and it was also observed that a higher CSR value enhances pore water pressure generation while lowering cyclic resistance.