Geosynthetic applications of superdrawn polyoxymethylene fibers: 1. Reinforcement of asphalt concrete

摘要

A grid was prepared from superdrawn polyoxymethylene fibers and applied to the reinforcement of asphalt concrete. The mechanical durability such as plastic flowresistance and crack resistance of the grid-reinforced asphalt concrete was assessed by the wheel tracking test. The grid-reinforced asphalt concrete showed remarkably high plastic flow resistance and crack resistance in comparison with the control without grids. The behavior of the plastic flow was explained on the basis of the general creep model and the result indicated a remarkable increase in the viscosity of the grid-reinforced asphalt concrete. The crack resistance was strongly related to the plastic flow resistance. The high durability of the grid-reinforced asphalt concrete was apparently due to the mechanical reinforcement resulting from the high rigidity of the grid layer inserted in the asphalt concrete.