CIRCULAR ECONOMY IN MARBLE AND GRANITE INDUSTRY: FROM STONE SCRAPS TO SUSTAINABLE GREEN CONCRETE

Document Type : Original Article

Authors

1 Mining and Petroleum Engineering Department, Faculty of Engineering, Al Azhar University, Qena, Egypt

2 Mining and Petroleum Engineering Department, Faculty of Engineering, Al Azhar University, Cairo, Egypt

3 Central Metallurgical Research & Development Institute (CMRDI), Helwan, Cairo, Egypt

Abstract

This work aims to study the behavior of concrete by replacing sand, aggregate and cement with marble manufacturing waste. The concrete is prepared by partially replacing cement, fine aggregate, and coarse aggregate with marble and granite waste. The impact of partially substituting granite and marble on the characteristics of the cured concrete was investigated. The density, compression strength, durability, and micro-structure of the produced concrete were used for evaluation of the produced concrete. The results showed that there is no significant change of the concrete density. While, the compression strength is improved as a result of partially replacing fine aggregate, and coarse aggregate with marble and granite waste. Substitution of 10% cement by marble dust, 20% sand by granite sludge, and 25-50% coarse aggregate by granite fragment produces concrete that is equivalent to or better than the control mix at all ages. The water permeability increases with increasing substitution compared to the control concrete. Also, the replacement slightly improved the acid resistance.
 
Special Issue of AEIC 2024 (Mechanical & Chemical and Material Engineering  Session)

Keywords

Main Subjects

Journal of Al-Azhar University Engineering Sector
Volume 19, Issue 72
Special Issue for Al-Azhar Engineering 16th. International Conference (AEIC 2024)
July 2024
Pages 241-253

Files

Share

How to cite

Statistics