El Aal Ahmed Abd, Abdullah Gamil M S, Qadri S M Talha, Abotalib Abotalib Z, Othman Abdullah
Civil Engineering Department, College of Engineering, Najran University, Najran, Saudi Arabia.
School of Land Use and Environmental Change, Faculty of Science, University of the Fraser Valley, Canada.
Phys Chem Earth (2002). 2022 Dec;128:103260. doi: 10.1016/j.pce.2022.103260. Epub 2022 Oct 11.
Using Health personal protective equipment (PPE) such as face masks, safety foot shoes and protective suits has expanded dramatically due to COVID-19 pandemic leading to a widespread distribution of the PPE, particularly the face masks, in the environments including streets, dump sites, seashores and other risky locations. The environmental degradation of polypropylene, the essential plastic component in single-use face masks (SUM), takes between 20 and 30 years and thus it is essential to develop experimental approaches to recycle the polypropylene or to reuse it in different ways. This paper explores the integration of SUM into concrete structures to improve its mechanical properties. We first to cut the inner nose wire and ear loops, then distribute the PPE material among five different mixed styles. The PPE were applied by volume at 0%, 1%, 1.5%, 2.0%, and 2.5%, with tests focusing on UCS, STS, FS, and PV to determine the concrete's overall consistency and assess the improvement in its mechanical properties. The results showed that adding PPE improves the strength properties and general performance of the concrete specimens. The pattern of rising intensity started to fade after 2%. The findings demonstrated that adding PPE fibers enhanced the UCS by 9.4% at the optimum 2% PPE. The PPE fibers, on the other side, are crucial in calculating the STS and FS of the reinforcement concrete.
由于新冠疫情，使用口罩、安全皮鞋和防护服等个人防护装备（PPE）的情况急剧增加，导致个人防护装备，尤其是口罩，在街道、垃圾场、海滨和其他危险场所等环境中广泛分布。一次性口罩（SUM）中主要的塑料成分聚丙烯的环境降解需要20到30年，因此开发回收聚丙烯或以不同方式再利用它的实验方法至关重要。本文探讨将一次性口罩融入混凝土结构以改善其力学性能。我们首先剪掉内部鼻夹和耳带，然后将个人防护装备材料分布在五种不同的混合样式中。个人防护装备按体积分别以0%、1%、1.5%、2.0%和2.5%的比例使用，测试重点是无侧限抗压强度（UCS）、劈裂抗拉强度（STS）、抗折强度（FS）和泊松比（PV），以确定混凝土的整体稠度并评估其力学性能的改善情况。结果表明，添加个人防护装备可改善混凝土试件的强度性能和综合性能。强度上升模式在2%之后开始减弱。研究结果表明，在最佳的2%个人防护装备用量下，添加个人防护装备纤维可使无侧限抗压强度提高9.4%。另一方面，个人防护装备纤维在计算钢筋混凝土的劈裂抗拉强度和抗折强度方面至关重要。
