Optimizing waste management and enhancing asphalt performance: A sustainable approach using discarded baby diapers and face masks

IF 4.8 Q2 TRANSPORTATION
Muhammad Abbas Bangash , Arshad Hussain , Nangyaley Khan , Yanjun Qiu
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引用次数: 0

Abstract

This research introduces an innovative approach to address the management of waste baby diapers (BDs) and face masks (FMs) in order to mitigate environmental risks associated with the indiscriminate disposal of BD and FM waste. The study focuses on using BDs and FMs in road pavement hot mix asphalt (HMA) to enhance bitumen and aggregate performance, respectively. The approach involves the direct incorporation of 4% shredded BD during the bitumen melting process, while varying percentages of shredded FM (0%, 0.5%, 1%, and 1.5% relative to aggregate weight) are utilized as aggregate coating through a melting process. The inclusion of BD enhances the resistance of modified bitumen (MB) to permanent deformations under high temperatures compared to conventional bitumen. Simultaneously, the treatment of FM significantly improves the physical and mechanical attributes of the aggregates. The combination of 4% BD and 1.5% FM results in improved densification, fostering robust bonding between aggregates and asphalt paste. This enhancement leads to a 39% increase in stability, an 18% increase in indirect tensile strength (ITS), and a 27% reduction in permanent deformations. Notably, there is a remarkable 53% increase in resistance to rut depth and a 33% increase in resilient modulus. Ultimately, the implementation of 4% BD as a bitumen enhancer and 1.5% FM as an aggregate modifier demonstrates the potential to achieve waste reductions of 36% and 61%, respectively. This approach extends beyond pavement enhancement, contributing to the broader societal mitigation of adverse effects associated with BD and FM waste.
优化废物管理,提高沥青性能:利用废弃婴儿尿布和口罩的可持续方法
本研究介绍了一种创新的方法来处理废弃婴儿纸尿裤(BD)和口罩(FMs)的管理,以减轻与无差别处置BD和FM废物相关的环境风险。研究重点是在路面热混合沥青(HMA)中分别使用BDs和FMs来提高沥青和骨料的性能。该方法包括在沥青熔化过程中直接掺入4%的碎BD,而在熔化过程中,不同比例的碎FM(相对于骨料重量的0%、0.5%、1%和1.5%)被用作骨料涂层。与常规沥青相比,掺入BD增强了改性沥青(MB)在高温下抵抗永久变形的能力。同时,FM处理显著改善了骨料的物理力学性能。4% BD和1.5% FM的组合改善了致密性,促进了骨料与沥青膏体之间的牢固结合。这种增强导致稳定性提高39%,间接抗拉强度(ITS)提高18%,永久变形减少27%。值得注意的是,抗车辙深度增加了53%,弹性模量增加了33%。最终,采用4%的BD作为沥青增强剂,1.5%的FM作为骨料改性剂,可以分别实现36%和61%的废物减少。这种方法不仅仅是改善路面,还有助于在更广泛的社会范围内减轻与BD和FM废物相关的不利影响。
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
International Journal of Transportation Science and Technology
International Journal of Transportation Science and Technology Engineering-Civil and Structural Engineering
CiteScore
7.20
自引率
0.00%
发文量
105
审稿时长
88 days
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