2019 Volume 7 Issue 2 Pages 601-608
In this paper, we propose a calculation method of pore size distribution which formed by soil having various soil particle sizes, assuming that soil particles and the pore between the soil particles are spherical. The pore spheres formed between the soil particles are defined as spheres that are inside four mutually contacting soil particle spheres and circumscribe all four soil particle spheres. The size distribution of the pore sphere is obtained from the probability of taking out 4 soil particle spheres based on the type and quantity of the soil particle sphere present. In addition, a calculation example of the pore radius distribution of the pore sphere formed by soil particle spheres having a particle size distribution similar to actual sandy soil is shown. By this method, it is expected that the suction stress acting between the soil particles of the unsaturated ground can be quantitatively evaluated and the suction stress in the unsaturated soil can be reflected in the design.
