(00617)Reducing the environmental impact of construction wastes by their use in the preparation of construction mixtures

摘要

This paper is focused on the utilization of Recycled concrete aggregate (RCA)as a substitute for natural aggregate. Concrete produced in this way is characterized by worse properties than standard concrete, mainly due to the properties of the RCA. One option is to modify the surface of the RCA and thereby to improve the properties of the concrete as a whole. By the method described in this paper, we have succeeded in reducing the total water absorption of concrete by 50%, while the compressive strengths on the tested cubes with the edge 100 mm were 55 MPa.