Laboratory evaluation of cold recycled mixture with foamed waste oil-activated rubberized asphalt

IF 7.3 1区工程技术 Q1 ENVIRONMENTAL STUDIES Transportation Research Part D-transport and Environment Pub Date : 2024-09-05 DOI:10.1016/j.trd.2024.104395

Zhe Hu, Jiupeng Zhang, Xiang Yu, Xiaokang Zhao, Lei Lyu, Qinggang Wang, Mingliang Zhang, Guojing Huang

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Abstract

To realize the resourceful utilization of roadway waste for recycling and low-carbon construction, two environmental-friendly pavement technologies pertaining to cold recycled foamed asphalt mixture and crumb rubber asphalt (CRA) were combined to prepare foamed rubberized asphalt cold recycled mixture (FRA-CRM). The results indicate that pre-swelled activated crumb rubber (CR) by waste oil with foaming agent can enhance the foaming effect of CRA and reduce the manufacturing temperature by 15 °C, and it presents better fatigue resistance and low-temperature performance. Moreover, the moisture susceptibility, high-temperature rutting resistance, and low-temperature cracking resistance of FRA-CRM have been substantially ameliorated in comparison with traditional foamed matrix asphalt cold recycled mixture. Life cycle assessment analysis shows that compared with conventional hot mix CRA mixture, the production demand of FRA-CRM per 1 t contributes to approximate 45.13 % reduction in greenhouse gas emissions and 51.38 % of energy saving.

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发泡废油活性橡胶沥青冷再生混合料的实验室评估

为实现路面废弃物的资源化循环利用和低碳施工，将冷再生发泡沥青混合料和橡胶沥青（CRA）两种环保路面技术相结合，制备了发泡橡胶沥青冷再生混合料（FRA-CRM）。结果表明，利用废油与发泡剂预浸活化橡胶屑（CR）可增强 CRA 的发泡效果，并将制造温度降低 15 °C，且具有更好的抗疲劳性和低温性能。此外，与传统的发泡基质沥青冷再生混合料相比，FRA-CRM 的湿敏性、高温抗车辙性和低温抗开裂性都得到了大幅改善。生命周期评估分析表明，与传统热拌 CRA 混合料相比，每生产 1 吨 FRA-CRM 可减少约 45.13% 的温室气体排放和 51.38% 的能源消耗。

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来源期刊

Transportation Research Part D-transport and Environment 工程技术-运输科技

CiteScore

14.40

自引率

9.20%

发文量

314

审稿时长

39 days

期刊介绍： Transportation Research Part D: Transport and Environment focuses on original research exploring the environmental impacts of transportation, policy responses to these impacts, and their implications for transportation system design, planning, and management. The journal comprehensively covers the interaction between transportation and the environment, ranging from local effects on specific geographical areas to global implications such as natural resource depletion and atmospheric pollution. We welcome research papers across all transportation modes, including maritime, air, and land transportation, assessing their environmental impacts broadly. Papers addressing both mobile aspects and transportation infrastructure are considered. The journal prioritizes empirical findings and policy responses of regulatory, planning, technical, or fiscal nature. Articles are policy-driven, accessible, and applicable to readers from diverse disciplines, emphasizing relevance and practicality. We encourage interdisciplinary submissions and welcome contributions from economically developing and advanced countries alike, reflecting our international orientation.