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Recycling 2018, 3(3), 39;

The Feasibility of Using Marble Cutting Waste in a Sustainable Building Clay Industry

Raw Building Materials and Processing Technology Research Institute, Housing and Building National Research Center (HBRC), 87 El-Tahreer St., Dokki, Giza 12311, Egypt
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Received: 11 June 2018 / Revised: 27 August 2018 / Accepted: 29 August 2018 / Published: 3 September 2018
(This article belongs to the Special Issue Management and Disposal of Sewage Sludge)
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This study evaluates the feasibility of stabilizing clay bricks with marble cutting waste (MCW). This waste is currently discarded in huge quantities as sludge resulting from the sawing of marble blocks to slabs and the processes of disposing of grinding and polishing marble in landfills located around the marble processing factories in the Shaq El-Thoban industrial zone, Cairo governorate, Egypt, which causes negative impacts on the environment, health, and sustainable development. Experimental investigations were carried out to explore the effect of the addition of MCW in different clay–base mixes using varying percentages of up to 20% at the expense of the hydrated lime. Cement, hydrated lime, and MCW are the three types of solidification agents used, and clay and sand were also added in the formulations of the unfired clay brick specimens. Laboratory cylindrical stabilized and compressed specimens were made; then, they were cured in a humidity chamber for two weeks and four weeks. Afterwards, they were air dried, tested, and evaluated according to the Egyptian code for the building by the stabilized and compressed earth soil (ECBS, 2016). To enhance the durability of the cured specimens, transparent silicon-based paint was used. The results demonstrated that the optimum content of marble sludge waste (MCW) was 15% when used as replacement for hydrated lime in the production of stabilized clay brick. For all of the samples, the use of silicon-based paint was found to improve the strength and water resistance of the stabilized clay bricks. The use of local waste materials as a substitute for a hydrated lime binder reduces both the cost and environmental impact associated with block production. View Full-Text
Keywords: marble cutting waste; stabilized clay bricks; hydrated lime; Shaq El-Thoban industrial zone marble cutting waste; stabilized clay bricks; hydrated lime; Shaq El-Thoban industrial zone

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El-Mahllawy, M.S.; Kandeel, A.M.; Abdel Latif, M.L.; El Nagar, A.M. The Feasibility of Using Marble Cutting Waste in a Sustainable Building Clay Industry. Recycling 2018, 3, 39.

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