Experimental Analysis on Static Liquefaction Susceptibility of Saturated Silty Sand Based on Strain Energy Absorption Evaluation
摘要
Despite the extensive research conducted on the impact of fines contents on static liquefaction resistance, this remains a contentious topic. For this raison, this work experimentally examined the effects of low-plastic fines (Fc=0–40%) and initial test conditions, encompassing stress history (ranging from 1 to 8), fabric techniques (dry funnel pluviation; DFP and moist tamping, MT), and initial density states (loose and dense), on the static liquefaction behavior of mixtures, by performing triaxial compression tests. To further investigate and explore the findings, the research employed the strain energy absorption approach, and additional factors such as; brittleness index, flow potential, and Af ratio. The test results show that an increase in low plastic fines contents significantly reduces strain energy absorption for normally consolidated and overconsolidated DFP specimens, conversely, a similar increase in low plastic fines contents leads to an increase in strain energy absorption for MT ones. Furthermore, the study develops novel relationship to predict variations in strain energy absorption based on all the examined parameters. Additionally, the finding indicates that the brittleness index, flow potential, and Af ratio appear as very reliable indicators in predicting the static liquefaction resistance of tested materials.