西南交通大学学报2025，Vol.60Issue(5)：1203-1212,1219,11.DOI:10.3969/j.issn.0258-2724.20240516
沥青混合料高温性能转变特征及抗车辙指标构建
Characteristics of High Temperature Performance Transformation and Rutting Resistance Index Construction of Asphalt Mixtures
摘要
Abstract
To reveal the performance transformation characteristics of asphalt mixtures under high temperature and propose corresponding indices for high temperature performance evaluation,the dynamic modulus and phase angle of three fine-grained asphalt mixtures used in RIOHTrack full-scale track were tested under different temperatures,frequencies,and strains.Based on the relationship between the dynamic modulus and phase angle,a characteristic dynamic modulus index that can reflect the high temperature performance transformation of asphalt mixtures was proposed.Dynamic modulus-phase angle curves were fitted by the Bigaussian model to determine the values of the characteristic dynamic modulus and the performance decline rates of three mixtures.Based on this,a comprehensive evaluation index Eww for rutting resistance performance was proposed,which could reflect the characteristic dynamic modulus,phase angle,and performance decline rate at the same time.The reliability of this evaluation index was verified by the observation of pavement rutting deformation with 100 million loads via the full-scale track.The results show that the dynamic moduli corresponding to the maximum phase angles obtained under different experimental conditions are relatively close.The proposed characteristic dynamic modulus index is consistent with the rutting test results,indicating that the index can reflect the rutting resistance performance of the mixtures.The correlation coefficient of the dynamic modulus-phase angle curve fitted by the Bigaussian model reaches over 96%,which demonstrates the high reliability of the method.Compared with laboratory rutting tests,the comprehensive evaluation index proposed in this article is consistent with the rutting detection results of the full-scale test track,indicating that it is necessary to consider the high temperature performance transformation characteristics of asphalt mixtures when rutting resistance performance is evaluated.关键词
道路工程/沥青混合料/性能转变/抗车辙/动态模量/RIOHTrack足尺试验环道Key words
road engineering/asphalt mixture/performance transformation/rutting resistance/dynamic modulus/RIOHTrack full-scale test track分类
交通工程引用本文复制引用
李倩,王旭东,周兴业,陈盟,刘旭..沥青混合料高温性能转变特征及抗车辙指标构建[J].西南交通大学学报,2025,60(5):1203-1212,1219,11.基金项目
国家重点研发计划(2020YFA0714300) 河北大学校长基金项目(XZJJ201911)资助. （2020YFA0714300）
