2020 Volume 76 Issue 2 Pages I_93-I_100
Areinforcement material inserted asphalt mixture layers has some unclear points, such as the optimum physical properties and the mechanism of tensile strain reduction on the lower surface of the layer. The present study evaluated fundamental mechanical properties and strain reduction effect of the basalt fiber geogrid reinforcement for asphalt mixture layers. The basalt fiber has advantage with regard to material recycling. The following findings were obtained. The tensile resistance and shear resistance between the asphalt mixture layers decrease when aperture size and hardness of the grid is inappropriate. The tensile strength of the grid is not the dominant factor for the strain reduction effect, but the effect of restraining the aggregate particles is a major factor.
