Bilema Munder, Aman Mohamad Yusri, Hassan Norhidayah Abdul, Al-Saffar Zaid, Mashaan Nuha S, Memon Zubair Ahmed, Milad Abdalrhman, Yusoff Nur Izzi Md
Department of Highway and Traffic Engineering, Faculty of Civil Engineering and Environmental, Univesiti Tun Hussein Onn Malaysia, Parit Raja 86400, Johor, Malaysia.
Department of Geotechnics & Transportation, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia.
Materials (Basel). 2021 Jun 23;14(13):3482. doi: 10.3390/ma14133482.
The reclaimed asphalt pavement (RAP) has become a moderately common practice in most countries; Hence, rejuvenating materials with RAP have earned publicity in the asphalt manufacturers, mainly due to the increasing raw material costs. In this study, the crumb rubber (CR) and waste frying oil (WFO) utilized as waste materials to restore the properties and enhance the rutting resistance of the RAP. Several physical, rheological, chemical properties of bituminous binders were tested. The result showed that the RAP bituminous binders incorporating WFO and CR decreased softening points and the increased penetration value; these translate to an increase in penetration index. Moreover, the viscosity of the WFO/CR combination reclaimed asphalt pavement binder showed better workability and stiffness, as well as a low storage stability temperature (less than 2.2 °C) with an acceptable loss upon heating. Without chemical reaction was observed between the waste-frying oil with the rubberized binder and the reclaimed asphalt pavement binder. Additionally, the WFO/CR rheological properties combined with the reclaimed asphalt pavement binder were comparable to the control sample. The incorporation of CR with WFO as a hybrid rejuvenator enhanced the rutting resistance. Therefore, the presence of WFO/CR has a considerable influence on the RAP binder properties while preserving a better environment and reducing pollution by reusing waste materials.
再生沥青路面（RAP）在大多数国家已成为一种较为常见的做法；因此，使用RAP的再生材料在沥青制造商中受到了关注，这主要是由于原材料成本不断上涨。在本研究中，将废橡胶粉（CR）和废煎炸油（WFO）用作废料来恢复性能并增强RAP的抗车辙能力。对沥青结合料的几种物理、流变和化学性质进行了测试。结果表明，掺入WFO和CR的RAP沥青结合料软化点降低，针入度值增加；这意味着针入度指数增加。此外，WFO/CR组合的再生沥青路面结合料的粘度显示出更好的工作性和刚度，以及较低的储存稳定性温度（低于2.2°C），加热损失可接受。未观察到废煎炸油与橡胶化结合料和再生沥青路面结合料之间发生化学反应。此外，WFO/CR流变性能与再生沥青路面结合料相结合与对照样品相当。将CR与WFO作为混合再生剂掺入可增强抗车辙能力。因此，WFO/CR的存在对RAP结合料性能有相当大的影响，同时通过再利用废料保护环境并减少污染。
