States of the Arts on the Study of Recycled Aggregate of Waste Concrete and Its Reuse for Concrete Structure

Abstract

Nowadays it becomes necessary to demolish a lot of structures for maintenance and renewal of a huge amount of construction stock. Because of the increase of demolished concrete and the lack of disposal place for it, the reuse of it is demanded intensively. In this report some new information on the recycled aggregates and the recycled aggregate concretes in the field of building is introduced, and the results of consideration on the problems from the technical, institutional and economical aspects in the ready-mixed concrete using the recycled aggregates are mentioned.