METHOD OF PRODUCING RECYCLED AGGREGATE

摘要

PROBLEM TO BE SOLVED: To produce recycled coarse and fine aggregates having the quality equal to an natural aggregate or crushed stone and sand by removing cement and mortar components almost from an aggregate, and to contribute recycle of concrete aggregate resources. SOLUTION: This method of producing a recycled aggregate from a concrete waste material comprises the first step of crushing the concrete waste material into concrete blocks each having a prescribed size, the second step of charging the concrete blocks and media 10 such as iron balls into a gap S between a cylindrical rotor 2, which is eccentrically rotatably provided in a vertical cylindrical pert of a casing 1, and the vertical cylindrical part in order to strengthen the compressive force with the media when cement and mortar components are removed from the aggregate by bringing the concrete blocks into contact with one another in the presence of friction by the eccentric rotation of the rotor 2 and the third step of sieving the recycled aggregate discharged from the casing 1 into the recycled coarse aggregate and the recycled fine aggregate.