The Feasibility of Using Marble Cutting Waste in a Sustainable Building Clay Industry
The Feasibility of Using Marble Cutting Waste in a Sustainable Building Clay Industry
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DOI：
10.3390/recycling3030039
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发表时间：
2018-09-01
期刊：
影响因子：
4.3
通讯作者：
El Nagar, Abdeen M.
中科院分区：
文献类型：
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作者：
El-Mahllawy, Medhat S.;Kandeel, Ayman M.;El Nagar, Abdeen M.
本研究评估大理石切割废料（MCW）稳定粘土砖的可行性。目前，在埃及开罗省Shaq El-Thoban工业区的大理石加工厂周围的垃圾填埋场，将大理石块锯成石板以及处理研磨和抛光大理石过程中产生的大量废物作为污泥被丢弃，对环境、健康和可持续发展造成负面影响。进行了实验研究，以探讨在不同的粘土基混合物中使用不同的百分比高达20%的消石灰的费用MCW的效果。水泥、熟石灰和MCW是所使用的三种类型的固化剂，并且粘土和砂也被添加到不烧粘土砖试样的配方中。制作了实验室圆柱形稳定和压缩试样;然后，将它们在湿度箱中固化两周和四周。之后，根据埃及建筑规范，通过稳定和压缩的土壤进行风干，测试和评估（ECBS，2016）。为了提高固化样品的耐久性，使用透明的硅基涂料。结果表明，大理石污泥废弃物（MCW）替代熟石灰用于生产稳定粘土砖时，其最佳掺量为15%。对于所有样品，发现使用硅基涂料提高了稳定粘土砖的强度和耐水性。使用当地废料作为熟石灰粘合剂的替代品，既降低了成本，又减少了与砌块生产相关的环境影响。
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.