Sustainable concrete production through the integration of waste foundry sand, fly ash, silica fume and metakaolin.

IF 3.9 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Scientific Reports Pub Date : 2025-07-28 DOI:10.1038/s41598-025-13277-9

Tariq Ali, Muhammad Zeeshan Qureshi, Inamullah Inam, Nabil Ben Kahla, Hawreen Ahmed, Ali Ajwad, Muhammad Adnan

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Abstract

This exploratory study investigates the use of waste foundry sand (WFS), combined with supplement cementitious materials (SCMs), in concrete production. The Preliminary Investigation is based on three groups, where the first group studies different percentages of natural sand replacement with WFS (i.e. 5%, 10%, 15% and 20%), the second group analyses the addition of 5% silica fume with WFS, and the third group observes 10% metakaolin inclusion with WFS. The studied parameters include density, nondestructive test (UPV), compressive and tensile strength, acid resistance, and environmental benefit analysis. According to the results, the compressive strength of the concrete mix is enhanced by 17% by adding 20% WFS and 5% silica fume, and this value increases by 23% when adding an additional 10% metakaolin. Furthermore, the use of 20% WFS leads to a 3.27% decrease in the cost of concrete as compared to the control mix, with a decrease of 2.1% and 5.1% for silica and metakaolin-containing mixes, respectively.

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通过整合废铸造砂、粉煤灰、硅灰和偏高岭土，可持续生产混凝土。

本探索性研究探讨了废弃铸造砂（WFS）与补充胶凝材料（SCMs）在混凝土生产中的应用。初步调查基于三组，其中第一组研究WFS替代天然砂的不同百分比（即5%，10%，15%和20%），第二组分析WFS添加5%硅灰，第三组观察WFS中含有10%偏高岭土。研究的参数包括密度、无损检测（UPV）、抗压和抗拉强度、耐酸性和环境效益分析。结果表明，掺加20% WFS和5%硅灰可使混凝土抗压强度提高17%，掺加10%偏高岭土可使混凝土抗压强度提高23%。此外，与对照混合料相比，使用20% WFS可使混凝土成本降低3.27%，其中二氧化硅和偏高岭土混合料的成本分别降低2.1%和5.1%。

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来源期刊

Scientific Reports Natural Science Disciplines-

CiteScore

7.50

自引率

4.30%

发文量

19567

审稿时长

3.9 months

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