SURFACE COVERING AGGREGATE FOR PERMEABLE PAVEMENT UTILIZING TILE WASTE MATERIAL, PERMEABLE PAVING MATERIAL AND PAVING BODY UTILIZING PERMEABLE PAVING MATERIAL AND THESE MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To solve the problem of the absorption loss of a polymer binder at a time when the crushed piece of the tile waste material having a porosity and water absorption properties is used for a surface covering aggregate and the insufficient curing of the binder resulting from a moisture, regarding the surface covering aggregate for forming the paving body or the like for a pedestrian, a paving material and a manufacturing method for the paving material. SOLUTION: The surface covering aggregate for a permeable pavement is composed of the aggregate containing the powdery and granular tile waste material and a polymer-surface treatment agent coating the surface of the aggregate and sealing the pores of the surface. The surface coating aggregate is blended with a solidifying material for binding the aggregate into a porous body at the time of laying on a base. A hydrophilic urethane prepolymer having an active isocyanate group at a molecular terminal is utilized particularly for the polymer surface treatment agent, the curing stability of the solidifying material is attained and the paving body has the porosity and a permeability. COPYRIGHT: (C)2005,JPO&NCIPI