Durability properties of lightweight concrete with ceramic mold casting waste

IF 1.8 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY Magazine of Concrete Research Pub Date : 2023-11-28 DOI:10.1680/jmacr.23.00125

Zhiyou Jia, José Aguiar, Sandra Cunha, Carlos Jesus, Fernando Castro

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Abstract

As the economy and industrialization have grown, the foundry industry has produced a significant amount of ceramic mold casting waste (CMCW). To promote resource utilization, this study investigates recycling CMCW as a partial replacement for lightweight aggregates in lightweight concrete. This study investigated the durability of lightweight concrete mixes with varying CMCW content, using surface electrical tests, ultrasonic pulse velocity measurements, non-steady state accelerated chloride penetration tests, and carbonation resistance experiments. Then, the results indicate that a lightweight concrete containing 80% CMCW exhibited greater density and uniformity, greater resistance to chloride ion penetration and better resistance to carbonation. These findings suggest that CMCW can be an effective and sustainable replacement for lightweight aggregate in lightweight concrete, improving their durability and environmental performance. This research contributes to the development of sustainable construction materials and provides insights for the use of CMCW in the foundry industry.

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陶瓷模铸造废料轻量混凝土的耐久性研究

随着经济和工业化的发展，铸造行业产生了大量的陶瓷模铸造废料。为了促进资源利用，本研究探讨了回收CMCW作为轻质混凝土中轻质骨料的部分替代品。本研究通过表面电试验、超声波脉冲速度测量、非稳态加速氯化物渗透试验和抗碳化试验，研究了不同CMCW含量的轻质混凝土配合比的耐久性。结果表明，含80% CMCW的轻质混凝土密度和均匀性更高，抗氯离子渗透能力更强，抗碳化能力更强。这些发现表明，CMCW可以有效和可持续地替代轻质混凝土中的轻骨料，提高其耐久性和环保性能。本研究有助于可持续建筑材料的发展，并为铸造行业使用CMCW提供见解。

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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.