Utilization of waste concrete powder as a substitution material for cement

This study is conducted to utilize waste concrete powder (WCP) made as a by-product manufacturing high quality recycled aggregate. The Blaine fineness of the WCP used was 928 and 1360 cm2/g. As the main characteristic of WCP, it is particle were angular similar to cement, and hydrated products were attached on the surface of particles. In addition, the particle size of WCP was larger than Ordinary Portland Cement (OPC) and in terms of chemical...