塑料科技2026，Vol.54Issue(8)：113-119,7.DOI:10.15925/j.cnki.issn1005-3360.2026.08.020
基于AMPT及数学模型探究再生沥青混合料的高温性能
Exploration of High-temperature Performance of Recycled Asphalt Mixture Based on AMPT and Mathematical Models
摘要
Abstract
The stability of asphalt mixtures at high temperatures is a critical factor affecting their service life.It is of great importance to investigate the effects of various factors on the high-temperature performance of composite recycled asphalt mixtures with a high content of reclaimed asphalt pavement materials(RAP).In the study,atomic force microscopy(AFM)was employed to determine the optimal dosage of the rejuvenator(XT-3).Dynamic modulus(|E*|)tests were conducted to examine the influence of different RAP contents,temperatures,loading frequencies,and fiber types on the high-temperature performance of high-RAP-content composite recycled asphalt mixtures.The results indicated that when the mass fraction of XT-3 was 7.0%,the microscopic adhesion force reached its maximum value of 8.482 mN,representing an increase of 775%,and the rejuvenation effect was optimal.Under the same RAP content and loading frequency conditions,the|E*|gradually decreased with increasing temperature.Under the same temperature and loading frequency conditions,the|E*|first increased and then decreased with increasing RAP content.Under the same temperature and RAP content conditions,the|E*|of the recycled asphalt mixtures decreased with decreasing loading frequency,and the incorporation of fibers effectively enhanced the high-temperature performance of the asphalt mixtures.By combining analysis of variance,the entropy weight-grey relational analysis method,and the random forest model,the effects of temperature,RAP content,loading frequency,and fiber type on|E*|were investigated from three mathematical frameworks,among which temperature was found to have the most significant influence.关键词
道路工程/再生沥青混合料/高温性能/数学模型Key words
Road engineering/Recycled asphalt mixtures/High-temperature performance/Mathematical model分类
交通工程引用本文复制引用
余芳,周乾,杨礼明,李江涛,常明丰,熊锐..基于AMPT及数学模型探究再生沥青混合料的高温性能[J].塑料科技,2026,54(8):113-119,7.基金项目
2023年度广西高校中青年教师科研基础能力提升项目(2023KY1163) （2023KY1163）
广西重点研发计划项目(桂科AB24010294) （桂科AB24010294）
