INFLUENCE OF DEGREE OF SATURATION ON STRENGTH CHARACTERISTICS OF CRUSHABLE VOLCANIC COARSE-GRAINED SOILS
The objective of this study is to evaluate the effect of degree of saturation on the strength characteristics of volcanic coarse-grained soils, wherein particle breakage significantly takes place even under relatively low stress levels. In this paper, a series of monotonic triaxial compression tests and water retention tests for Tomikawa volcanic coarse-grained soils were performed under various degrees of saturation, and the relationships between degree of saturation, degree of particle breakage and strength were examined based on experimental results. The following conclusions were obtained: the shear strength of crushable coarse-grained volcanic soils decreases with an increase in the amount of particle breakage. Particle breakage is strongly influenced by the degree of saturation of the soil matrix. Accordingly, as the crushable volcanic coarse-grained soil becomes saturated, particle breakage becomes more dominant, thereby decreasing the shear strength of the soil.
T.Ishikawa Y.Ozaki S.Miura
Hokkaido University, Sapporo, Japan
国际会议
南京
英文
223-229
2007-04-21（万方平台首次上网日期，不代表论文的发表时间）