抄録
The strength and deformation characteristics of granular sands are improved by mixing flexible short fibers. Many factors such as the mixture ratio, fiber materials, fiber length and orientation affect the improvement effect of the short fiber reinforced sands. Especially, the mixture ratio of short fiber plays very important role for the improvement effect and the mixture design. Although the strength of sand increases by mixing fibers, excessive mixture may reduce that of reinforced sand. In this study, we focused on the relationship between the strength and the mixture ratio of fibers by the triaxial compression experiments and the discrete element simulations. Also, we tried to find the critical point of the important effect which would be maximized for the strength of granular materials. As a result, the existence of optimum mixture ratio for the strength of granular materials was confirmed.
