COMPOSITE FOR POROUS ASPHALT PAVEMENT

摘要

A porous asphalt pavement composition is provided to obtain sufficient strength and durability in a thin thickness by comprising cellulose fiber and thermoplastic rubber. A porous asphalt pavement composition having at least 17% of porous comprises high viscosity asphalt, cellulose fiber, thermoplastic rubber having melting temperature of 170-190°C, limestone, and aggregate comprising 75-90% of coarse aggregate having a maximum size of at least 5mm. The cellulose fiber has (C6H10O5)n polymerization structure. The cellulose fiber is contained in the composition in the range of 0.2-0.6%, and the fiber is coated on the aggregate in a state of a mixture with a polymer. The thermoplastic rubber is contained in the composition in the range of 0.2-0.8%, and the limestone is contained in the composition in the range of 3-7%. The porous asphalt pavement composition optionally comprises slag cement. Further, the limestone is produced by reacting CaO produced by burning CaCO3.