Ahmad Jawad, Zhou Zhiguang, Martínez-García Rebeca, Vatin Nikolai Ivanovich, de-Prado-Gil Jesús, El-Shorbagy Mohammed A
Department of Disaster Mitigation of Structures, Tongji University, Shanghai 200092, China.
Department of Mining Technology, Topography, and Structures, Campus de Vegazana s/n, University of León, 24071 León, Spain.
Materials (Basel). 2022 Mar 23;15(7):2365. doi: 10.3390/ma15072365.
The by-product of the foundry industry is waste foundry sand (WFS). The use of WFS in building materials will safeguard the ecosystem and environmental assets while also durable construction. The use of industrial waste in concrete offsets a shortage of environmental sources, solves the waste dumping trouble and provides another method of protecting the environment. Several researchers have investigated the suitability of WFS in concrete production instead of natural river sand in the last few decades to discover a way out of the trouble of WFS in the foundry region and accomplish its recycling in concrete production. However, a lack of knowledge about the progress of WFS in concrete production is observed and compressive review is required. The current paper examines several properties, such as the physical and chemical composition of WFS, fresh properties, mechanical and durability performance of concrete with partially substituting WFS. The findings from various studies show that replacing WFS up to 30% enhanced the durability and mechanical strength of concrete to some extent, but at the same time reduced the workability of fresh concrete as the replacement level of WFS increased. In addition, this review recommended pozzolanic material or fibre reinforcement in combination with WFS for future research.
铸造行业的副产品是铸造废砂（WFS）。在建筑材料中使用WFS将保护生态系统和环境资产，同时实现建筑的耐久性。在混凝土中使用工业废料可以弥补环境资源的短缺，解决废料倾倒问题，并提供另一种保护环境的方法。在过去几十年里，一些研究人员研究了WFS在混凝土生产中替代天然河砂的适用性，以找到解决铸造地区WFS问题的方法，并在混凝土生产中实现其回收利用。然而，人们发现对WFS在混凝土生产中的进展缺乏了解，需要进行全面的综述。本文研究了WFS的一些特性，如物理和化学成分、新拌性能、部分替代WFS的混凝土的力学性能和耐久性。各种研究的结果表明，替代高达30%的WFS在一定程度上提高了混凝土的耐久性和力学强度，但同时随着WFS替代水平的提高，新拌混凝土的工作性降低。此外，本综述建议在未来的研究中，将火山灰材料或纤维增强材料与WFS结合使用。
