CIRCULAR ECONOMY IN MARBLE AND GRANITE INDUSTRY: FROM STONE SCRAPS TO SUSTAINABLE GREEN CONCRETE | ||||
| Journal of Al-Azhar University Engineering Sector | ||||
| Volume 19, Issue 72, July 2024, Page 241-253 PDF (778.78 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/auej.2024.255951.1531 | ||||
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| Authors | ||||
Hamada Abdelrahman Attia   1; Mohamed G. Farghaly1; A. M. Saleh2; M. A. Abdel Khalek3
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| 1Mining and Petroleum Engineering Department, Faculty of Engineering, Al Azhar University, Qena, Egypt | ||||
| 2Mining and Petroleum Engineering Department, Faculty of Engineering, Al Azhar University, Cairo, Egypt | ||||
| 3Central 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 | ||||
| Waste management; Waste treatment; Marble waste; Granite waste; Concrete; Compressive strength; Sustainability; Green Concrete | ||||
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