Recycled Surgical Mask Waste as a Resource Material in Sustainable Geopolymer Bricks

IF 4.6 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Recycling Pub Date : 2023-11-19 DOI:10.3390/recycling8060093
Domenico Asprone, Dariusz Mierzwi´nski, Kritish Thoudam, N. Hossiney, Srinidhi Lakshmish Kumar, Jacob Alex, Sanoop Prakasan, Sarath Chandra, Yogeshraj Urs, A. S. Arunkumar
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Abstract

With the advent of the COVID-19 pandemic, the global consumption of single-use surgical masks has risen immensely, and it is expected to grow in the coming years. Simultaneously, the disposal of surgical masks in the environment has caused plastic pollution, and therefore, it is exigent to find innovative ways to handle this problem. In this study, surgical masks were processed in a laboratory using the mechanical grinding method to obtain recycled surgical masks (RSM). The RSM was added in doses of 0%, 1%, 2%, 3%, and 4% by volume of geopolymer bricks, which were synthesized with ground granulated blast furnace slag (GGBS), rice husk ash (RHA), sand, and sodium silicate (Na2SiO3) at ambient conditions for a duration of 28 days. The developed bricks were tested for compressive strength, flexural strength, density, water absorption, efflorescence, and drying shrinkage. The results of the study reveal that compressive strength and flexural strength improved with the inclusion of RSM in the bricks. The highest values of compressive strength and flexural strength were 5.97 MPa and 1.62 MPa for bricks with 4% RSM, respectively. Further, a reduction in the self-weight of the bricks was noticed with an increase in RSM. There was no pronounced effect of RSM on the water absorption and efflorescence properties. However, the RSM played a role in reducing the drying shrinkage of the bricks. The sustainability analysis divulges the catalytic role of RSM in improving material performance, thereby proving to be a potential candidate for low-carbon material in the construction industry.
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将回收的手术面罩废料作为可持续土工聚合物砖的资源材料
随着 COVID-19 大流行的到来,一次性外科口罩的全球消费量大幅上升,预计未来几年还将继续增长。与此同时,手术口罩在环境中的弃置也造成了塑料污染,因此迫切需要找到创新的方法来解决这一问题。在这项研究中,我们在实验室中使用机械研磨法处理外科口罩,以获得再生外科口罩(RSM)。在土工聚合物砖中按体积添加 0%、1%、2%、3% 和 4% 的 RSM,土工聚合物砖是用磨细高炉矿渣 (GGBS)、稻壳灰 (RHA)、沙子和硅酸钠 (Na2SiO3) 在环境条件下合成的,持续时间为 28 天。对开发的砖块进行了抗压强度、抗弯强度、密度、吸水率、风化和干燥收缩率测试。研究结果表明,在砖中加入 RSM 后,抗压强度和抗折强度都有所提高。含有 4% RSM 的砖的抗压强度和抗折强度的最高值分别为 5.97 兆帕和 1.62 兆帕。此外,随着 RSM 的增加,砖的自重也有所减轻。RSM 对吸水率和风化性能没有明显影响。不过,RSM 在减少砖的干燥收缩方面发挥了作用。可持续性分析揭示了 RSM 在改善材料性能方面的催化作用,从而证明它是建筑行业低碳材料的潜在候选材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Recycling
Recycling Environmental Science-Management, Monitoring, Policy and Law
CiteScore
6.80
自引率
7.00%
发文量
84
审稿时长
11 weeks
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