Yalcin Erkut, Munir Ozdemir Ahmet, Vural Kok B, Yilmaz Mehmet, Yilmaz Bahadir
Engineering Department, University of Firat, Elazig, Turkey.
Engineering Department, University of Bursa Technical, Bursa, Turkey.
Constr Build Mater. 2022 Jun 27;337:127576. doi: 10.1016/j.conbuildmat.2022.127576. Epub 2022 Apr 27.
Recently, COVID-19 has appeared as an international pandemic, leading to serious risks for humans. Using face masks is one of the most common measures in a wide-ranging prevention program that could control the COVID-19 dissemination. Face masks are typically composed of non-biodegradable and non-renewable polymers based on petroleum, which are harmful to nature and lead to health problems. In the present study, disposable face masks, the use of which has increased due to the Covid-19 pandemic throughout the world and which cause environmental pollution, were divided into very small pieces and utilized as a modifier in the bitumen binder. Therefore, this study aimed to provide a solution to such a significant environmental problem. Five different ratios of waste mask and the single ratio of styrene-butadienestyrene (SBS) were added to the pure binder and the rheological, physical, and chemical properties of the modified binders were compared. The result showed that adding a waste mask and SBS to the pure bitumen caused increases in binders' softening point and viscosity and reductions in the penetration value. Waste mask modifications were able to better maintain its elastic properties both at low stress and high-stress levels with increasing temperature. 3% SBS was the binder most affected by temperature rise. As a result, it has been determined that binders containing more than 2% waste mask have better performance characteristics than binders containing 3% SBS in terms of physical and rheological properties.
最近，新冠疫情已演变成一场国际大流行疾病，给人类带来了严重风险。佩戴口罩是广泛预防计划中最常见的措施之一，该计划能够控制新冠病毒的传播。口罩通常由基于石油的不可生物降解和不可再生聚合物组成，这些聚合物对自然有害并会引发健康问题。在本研究中，一次性口罩在全球因新冠疫情而使用量增加且会造成环境污染，将其切成非常小的碎片并用作沥青粘合剂的改性剂。因此，本研究旨在为这样一个重大的环境问题提供解决方案。将五种不同比例的废弃口罩和单一比例的苯乙烯 - 丁二烯 - 苯乙烯（SBS）添加到纯粘合剂中，并比较改性粘合剂的流变学、物理和化学性质。结果表明，向纯沥青中添加废弃口罩和SBS会导致粘合剂的软化点和粘度增加，针入度值降低。随着温度升高，废弃口罩改性能够在低应力和高应力水平下更好地保持其弹性性能。3%的SBS是受温度升高影响最大的粘合剂。结果表明，就物理和流变学性质而言，含有超过2%废弃口罩的粘合剂比含有3%SBS的粘合剂具有更好的性能特征。
