Converting waste cooking oil and waste rubber powder into asphalt rejuvenator: Preparation parameters and rejuvenation effect

IF 8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-04-17 DOI:10.1016/j.conbuildmat.2025.141362

Junfeng Gao , Hainian Wang , Ning Xu , Danning Li , Zhen Leng

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引用次数: 0

Abstract

This study attempted to convert waste cooking oil (WCO) and waste rubber powder (WRP) into a favorable asphalt rejuvenator, called WOR rejuvenator, to address challenges in waste management and environmental protection. Firstly, the preparation parameters were optimized based on the response surface methodology to obtain a WOR rejuvenator with balanced recovery of high and low temperature performance for aged asphalt. Subsequently, the rejuvenation effect of the optimized WOR rejuvenator was assessed. Results indicated that WRP content had the most significant impact on the rejuvenation effect of WOR rejuvenator, followed by preparation temperature and preparation time. The recommended preparation parameters for WOR rejuvenator involved adding 39 % WRP to WCO and mixing at 224 ℃ for 61 min. In this case, a 10 % content of WOR rejuvenator can maximize the low-temperature performance of aged asphalt without significantly weakening its high-temperature performance, while greatly improving the fatigue resistance. The optimal content of WOR rejuvenator applied in practice can be adjusted based on the target value of 10 % to meet the rejuvenation needs of asphalt with different aging levels. The findings provide valuable insights into the sustainable utilization of WCO and WRP as well as the recycling of recycled asphalt pavement.

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废食用油和废胶粉制沥青再生剂：制备参数及再生效果

本研究试图将废食用油（WCO）和废胶粉（WRP）转化为一种有利的沥青再生剂，即WOR再生剂，以解决废物管理和环境保护方面的挑战。首先，基于响应面法对制备参数进行优化，得到高低温性能恢复均衡的老化沥青WOR再生剂；随后，对优化后的WOR年轻化剂的年轻化效果进行了评价。结果表明，WRP含量对WOR返青剂返青效果的影响最为显著，其次是制备温度和制备时间。WOR再生剂的推荐制备参数为：WCO中加入39% % WRP，在224℃下混合61 min。在这种情况下，添加10 %的WOR回复性剂可以使老化沥青的低温性能达到最大，而不会明显削弱老化沥青的高温性能，同时大大提高了老化沥青的抗疲劳性能。实践中应用的WOR再生剂的最佳掺量可在10 %的目标值基础上进行调整，以满足不同老化程度沥青的再生需要。研究结果为可持续利用WCO和WRP以及回收沥青路面提供了宝贵的见解。

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

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.