The feasibility of using epoxy asphalt to recycle a mixture containing 100% reclaimed asphalt pavement (RAP)

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2022-02-14 DOI:10.1016/j.conbuildmat.2021.126122

Xingyu Yi, Huimin Chen, Houzhi Wang, Chenguang Shi, Jun Yang

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引用次数: 26

Abstract

With the rising cost of pavement materials and increasingly stringent environmental protection and sustainability policies, asphalt recycling technology with high reclaimed asphalt pavement (RAP) content is becoming more essential. This study was designed to explore the feasibility of using epoxy asphalt for the recycling of mixture containing 100% RAP. The performance of the epoxy asphalt recycled mixture and the virgin epoxy asphalt mixture was evaluated and compared. The wheel tracking test and trabecular bending test were carried out to evaluate the high and low-temperature performance. The trabecular fatigue test was adopted to measure fatigue resistance. The indirect tensile test and the semi-circular bending test were carried out to evaluate the moisture susceptibility of the epoxy asphalt recycled mixture. The rutting resistance of epoxy asphalt recycled mixture was found much better than the virgin epoxy asphalt mixture. The low temperature cracking resistance and moisture susceptibility of epoxy asphalt recycled mixture was close to the virgin epoxy asphalt mixture. The influence of epoxy resin components on cracking resistance was more obvious than that of aged asphalt binder. However, the fatigue performance of epoxy asphalt recycled mixture was inferior to the virgin epoxy asphalt mixture. Based on the performance comparison, the epoxy asphalt have the potential to recycle a mixture with 100% RAP content.

查看原文本刊更多论文

用环氧沥青回收含有100%再生沥青路面的混合料的可行性

随着路面材料成本的不断上升以及环保和可持续发展政策的日益严格，具有高再生沥青路面(RAP)含量的沥青回收技术变得越来越重要。本研究旨在探讨使用环氧沥青回收含100% RAP混合料的可行性。对环氧沥青再生混合料和原环氧沥青混合料的性能进行了评价和比较。通过车轮跟踪试验和小梁弯曲试验对其高低温性能进行了评价。采用小梁疲劳试验测定其疲劳抗力。通过间接拉伸试验和半圆弯曲试验对环氧沥青再生混合料的水敏感性进行了评价。环氧沥青再生混合料的抗车辙性能明显优于原生环氧沥青混合料。环氧沥青再生混合料的低温抗裂性能和湿敏感性与原环氧沥青混合料相近。环氧树脂组分对抗裂性能的影响比老化沥青粘结剂的影响更明显。然而，环氧沥青再生混合料的疲劳性能不如原环氧沥青混合料。通过性能对比，环氧沥青具有回收100% RAP含量的混合料的潜力。

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.