Department of Civil Engineering, COMSATS University Islamabad, Abbottabad Campus, Islamabad, Pakistan.
Department of Electronics Engineering, Peking University, Beijing, 100871, China.
Sci Rep. 2024 Jan 3;14(1):449. doi: 10.1038/s41598-023-50946-z.
The coronavirus (COVID-19) pandemic has not only had a severe impact on global health but also poses a threat to the environment. This research aims to explore an innovative approach to address the issue of increased waste generated by the pandemic. Specifically, the study investigates the utilization of discarded face masks in combination with recycled concrete aggregate (RCA) and Silica Fume (SFM) in civil construction projects. The disposable face masks were processed by removing the ear loops and nose strips, and then cutting them into small fibers measuring 20 mm in length, 5 mm in width, and 0.46 mm in thickness, resulting in an aspect ratio of 24. Various proportions of SFM and RCA were incorporated into the concrete mix, with a focus on evaluating the compressive strength, split tensile strength, and durability of the resulting material. The findings indicate that the addition of SFM led to improvements in both compressive and split tensile strength, while no significant impact on durability was observed.
新型冠状病毒肺炎（COVID-19）疫情不仅对全球健康造成严重影响，也对环境构成威胁。本研究旨在探索一种创新方法，以解决因疫情导致的废物增加问题。具体而言，本研究探讨了在土木工程中利用废弃口罩与再生混凝土骨料（RCA）和硅灰（SFM）相结合的方法。废弃口罩经过处理，去除耳带和鼻条，然后切成 20 毫米长、5 毫米宽、0.46 毫米厚的小纤维，纵横比为 24。在混凝土混合物中加入不同比例的 SFM 和 RCA，重点评估了所得材料的抗压强度、劈裂抗拉强度和耐久性。结果表明，添加 SFM 可提高抗压强度和劈裂抗拉强度，而对耐久性没有显著影响。
