回收展示玻璃电子垃圾对三元沙丘砂砂浆工程性能的影响

IF 1.8 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Magazine of Concrete Research Pub Date : 2023-07-06 DOI:10.1680/jmacr.22.00316

Choungara Toufik, A. Ghrieb, Y. Abadou

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引用次数: 0

摘要

本研究探讨了在生产水泥砂浆时使用展示玻璃电子废物（DGE废物）中的回收材料作为沙丘沙的颗粒校正剂和水泥添加剂的可行性。实验研究了DGE废物替代率（来自三个不同地区的三种类型的沙丘沙按重量计为5–20%，步长为5%）对增强水泥基复合材料工程性能的影响，以评估沙丘沙砂浆的性能。结果表明，在沙丘砂砂浆中掺入DGE废料，与对照砂浆相比，其力学强度（弯曲强度和压缩强度）分别提高了35%和43%，动态弹性模量提高了12%，开孔率降低了28%，从而减少了微裂纹和孔隙。当用15%的回收DGE废料代替水泥时，机械强度和动态弹性模量以及开孔率和吸收率分别降低了4-7%和17-20%。考虑到环境影响和工程性质，水泥置换和沙丘砂置换的最佳DGE废物掺入率分别为15%和20%。

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Influence of recycled display glass e-waste on ternary dune sand mortar engineering properties

The present study explores the feasibility of using recycled materials from display glass electronic waste (DGE-waste) in the production of cementitious mortars as a granular corrector for dune sand and as a cementitious addition. The effects of the DGE-waste replacement ratio (5–20% with 5% steps by weight of three types of dune sand from three different regions) on the engineering properties of reinforced cementitious composite were experimentally investigated to assess the performance of dune sand mortar. The results show that the incorporation of DGE-waste in dune sand mortar can increase the mechanical strengths (flexural and compressive) by up to 35% and 43%, respectively, and improve the dynamic modulus of elasticity by at most 12% as compared with the control mortar, as well as decrease open porosity by up to 28%, which reduces micro-cracks and voids. When cement is replaced with 15% recycled DGE-waste, the mechanical strength and dynamic modulus of elasticity, as well as open porosity and absorption, are decreased by 4–7% and 17–20%, respectively. Considering the environmental impact and engineering properties, the optimal percentage of DGE-waste incorporation is 15% for cement replacement and 20% for dune sand replacement.

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来源期刊

Magazine of Concrete Research 工程技术-材料科学：综合

CiteScore

4.60

自引率

11.10%

发文量

102

审稿时长

5 months

期刊介绍： For concrete and other cementitious derivatives to be developed further, we need to understand the use of alternative hydraulically active materials used in combination with plain Portland Cement, sustainability and durability issues. Both fundamental and best practice issues need to be addressed. Magazine of Concrete Research covers every aspect of concrete manufacture and behaviour from performance and evaluation of constituent materials to mix design, testing, durability, structural analysis and composite construction.