Industrial waste has rapidly increased day by day due to the fast-growing population and usage of products, which dumps unscrupulously, resulting in environmental pollutions. Waste foundry sand (WFS) is one of the industrial solid wastes. River sand is generally used in concrete as a fine aggregate, which is limited (scant), and river excavation for sand leads to environmental deterioration. To resolve these problems, a study was performed on WFS as a partial substitution instead of natural sand in concrete. The effects of WFS on concrete performance were assessed through durability and mechanical performance. The results from experimental tests show that, compared to concrete blends with WFS up to 30% substitution, the control mix strength was only 7.6% (28 days) higher, and this improvement is not too high. In the same manner, concrete mixtures that contain WFS up to 30%, and their durability properties were somewhat same to blank max (control). Test results showed that WFS with a substitutions ratio up to 30% can be successfully used in concrete without disturbing its durability and strength properties.

中文翻译：

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部分替代废铸造砂改性可持续混凝土的力学和耐久性特性

由于人口的快速增长和产品的使用，工业废物日益增加，不择手段地倾倒，造成环境污染。废铸造砂（WFS）是一种工业固体废物。河砂一般在混凝土中作为细骨料使用，数量有限（稀缺），河砂开挖导致环境恶化。为了解决这些问题，对 WFS 进行了一项研究，作为混凝土中天然砂的部分替代品。WFS 对混凝土性能的影响通过耐久性和机械性能进行评估。实验测试结果表明，与 WFS 替代率高达 30% 的混凝土混合物相比，对照混合料强度仅高出 7.6%（28 天），而且这种改进并不太高。以相同的方式，WFS 含量高达 30% 的混凝土混合物，其耐久性特性与空白最大值（对照）有些相同。试验结果表明，替代率高达 30% 的 WFS 可成功用于混凝土，而不会影响其耐久性和强度性能。