Gajewski Marcin Daniel, Horodecka Renata, Bańkowski Wojciech, Mirski Krzysztof, Grzegórska Aleksandra, Kłopociński Maciej
Road and Bridge Research Institute, 03302 Warsaw, Poland.
Green Park VI Sp. z o.o., 87700 Aleksandrów Kujawski, Poland.
Materials (Basel). 2024 Jul 12;17(14):3451. doi: 10.3390/ma17143451.
This article is a continuation of work on the use of plastic waste (such as PP, PS, LDPE, HDPE, and their mixtures) processed in the proprietary pyrolysis process as asphalt additives. The article carried out detailed tests of the mixes of selected additives with pen-graded bitumen 50/70, taking into account, among others, the influence of impurities and the ratio of PE to PP in the additives as well as short- (RTFOT) and long-term (RTFOT + PAV) ageing. An extensive research program was carried out, including functional and rheological tests in a wide range of temperatures. First, tests of stability and adhesion to various types of aggregates were carried out, demonstrating the usefulness of the proposed additives. Then, the elastic recovery and the impact of technological ageing on penetration, Fraass breaking temperature, and plasticity range were assessed. The same binder mixes were subjected to rheological tests in a wide range of technological and operational temperatures, assessing, among others, viscosity, the norm of the complex shear modulus, elastic recovery and compliance in the MSCR test, and stiffness in the bending beam rheometer. This entire class of tests was carried out for clean samples and those containing impurities, indicating their impact on individual material parameters.
本文是关于将采用专利热解工艺处理的塑料废料（如聚丙烯、聚苯乙烯、低密度聚乙烯、高密度聚乙烯及其混合物）用作沥青添加剂的研究工作的延续。本文对所选添加剂与针入度分级为50/70的沥青的混合料进行了详细测试，尤其考虑了杂质的影响、添加剂中聚乙烯与聚丙烯的比例以及短期（旋转薄膜烘箱试验）和长期（旋转薄膜烘箱试验+压力老化试验）老化。开展了一项广泛的研究计划，包括在很宽的温度范围内进行功能和流变测试。首先，对与各类集料的稳定性和粘附性进行了测试，证明了所提出的添加剂的有效性。然后，评估了弹性恢复以及工艺老化对针入度、弗拉斯脆点温度和塑性范围的影响。对相同的粘结剂混合料在很宽的工艺和使用温度范围内进行了流变测试，尤其评估了粘度、复数剪切模量标准、MSCR试验中的弹性恢复和柔量以及弯曲梁流变仪中的劲度。对纯净样品和含杂质样品都进行了这一整套测试，表明了杂质对各个材料参数的影响。
