Properties of high performance concrete made with recycled fine ceramic and coarse mixed aggregates

Abstract

There are various means of obtaining waste for the production of recycled aggregates. In this study the waste material has been obtained from building demolition and also from the ceramic industry (known for the production of large amounts of rejected ceramic wastes). High performance concretes (HPC) was produced using fine ceramic aggregates (FCA) in substitution of 15% and 30% of natural sand, and using 20%, 50% and 100% of coarse mixed aggregates (CMA) on substitution of natural coarse aggregates. The physical, mechanical and durability properties of the recycled aggregate concretes were determined and compared to those of the results of conventional concrete. The results showed that concrete produced with up to 30% of FCA achieved similar or improved mechanical and durability properties to those of conventional concrete. Concrete made with up to 20% of CMA achieved similar compressive strength to High Performance conventional Concrete of 100 MPa. At 180 days of curing the concretes produced with up to 50% CMA obtained low corrosion risk. (C) 2014 Elsevier Ltd. All rights reserved.