Discussion of 'Effects of Particle Size Distribution on Shear Strength of Accumulation Soil' by Jun-Jie Wang, Hui-Ping Zhang, Sheng-Chuan Tang, and Yue Liang

摘要

The authors are commended for offering the effect of the particle size distribution (PSD) on the shear strength of the accumulation soil through a series of direct shear box tests and triaxial tests. The authors' main conclusion is that the angle of shearing resistance increases with an increase in the median particle diameter or the gravel content and decreases with an increase of the coefficient of uniformity. However, the simulation proposed by the authors, for the angle of shearing resistance in relation to the median particle diameter, the gravel content, and the coefficient of uniformity, seems abrupt and imprecise, as shown in Figs. 4-6 from the original paper.