Waste-free technology for recycling concrete rubble

Abstract

An effective method of recycling concrete debris which allows its components to return to the construction process is wanted. This paper proposes a waste-free method of recycling concrete rubble based on thermal-mechanical treatment. The recycling process results in a high quality coarse aggregate and cement mortar. The aggregate can be used as a complete substitute of natural aggregates in concrete and gives comparable or better properties than concretes with a natural aggregate. The ground mortar can be a pozzolana addition to cement and sand-line composites. The microstructure research was carried out. The method and the device for the complete recycling process was patented.