交通节能与环保2025，Vol.21Issue(2)：11-16,6.DOI:10.3969/j.issn.1673-6478.2025.02.003
G30连霍高速(新疆段)改扩建工程RAP性能分析及其对再生沥青性能影响
Performance Analysis of RAP from G30 Lian-Huo Expressway(Xinjiang Section)Reconstruction and Expansion Project and Its Impact on the Performance of Recycled Asphalt
摘要
Abstract
During the reconstruction and expansion of the G30 Lianyungang-Khorgas Expressway(Xinjiang Section),a large amount of reclaimed asphalt pavement(RAP)is expected to be generated from the removal of the existing pavement.The project is designed to utilize plant-mix hot recycled asphalt(RHMA)technology to recycle and reuse the RAP.To determine which layer of the existing pavement structure is more suitable for recycling,dynamic shear rheometer(DSR)tests and bending beam rheometer(BBR)tests were conducted on RAP asphalt obtained from three different layers and on a blend of aged and new asphalt(30%aged asphalt+70%new asphalt).The results show that the RAP from different layers contains asphalt with varying degrees of aging.The asphalt in the surface layer RAP is the most severely aged,while the asphalt in the lower layer RAP and the overall milled RAP has a similar degree of aging,which is less than that of the surface layer RAP.By blending aged and new asphalt,the performance of the aged asphalt can be effectively restored to meet the specifications required for the construction area.关键词
老化沥青/动态剪切流变仪/弯曲梁蠕变仪Key words
aged asphalt/dynamic shear rheometer/bending beam rheometer分类
交通运输引用本文复制引用
王乐,郭恩成,关志凯,宋亮,高冲,李梓豪..G30连霍高速(新疆段)改扩建工程RAP性能分析及其对再生沥青性能影响[J].交通节能与环保,2025,21(2):11-16,6.基金项目
2024年度新疆维吾尔自治区交通运输行业科技项目(2024-ZD-002) （2024-ZD-002）
天山英才科技创新领军人才项目(2022TSYCLJ0045) （2022TSYCLJ0045）
