材料科学与工程学报2026，Vol.44Issue(2)：188-194,225,8.DOI:10.14136/j.cnki.issn1673-2812.2026.02.003
精细分离回收料再生沥青疲劳的动力学表征及寿命预估
Kinetics Characterization of Fatigue and Lifetime Prediction for Recycled Binder Blend from Refined RAP Separation
摘要
Abstract
To accurately characterize the fatigue performance of recycled binder blends based on refined reclaimed asphalt pavement(RAP)separation technology,the Arrhenius model derived from the representative change rate of damage density was established to determine the activation energy of the fatigue damage process of bituminous binders,then mass-composite activation energy of fatigue damage and lifetime prediction model were developed for blended binders.Results show that the fatigue damage activation energy of recycled binder blend increases as compared to that of recycled binder,which indicates the enhanced fatigue resistance due to the addition of virgin binder.SBS polymer could reduce the effect of aging on fatigue performance of bituminous binder.In contrast to traditional mechanistic characterization indicators,kinetic indicator of fatigue damage activation energy could be used to understand the restoration of fatigue performance for recycled binder blends.As to different recycled binder blends,the calculated fatigue damage activation energies fit well with the results predicted by mass-composite activation energy,the relative errors between which are less than 10%,and their fatigue lives obtained from fatigue tests are similar to the predicted results based on the fatigue damage activation energy,validating the reliability of the proposed kinetics characterization method.Aged binder from refined RAP separation technology has a profound effect on the fatigue performance of recycled binder blend,which should be carefully considered during the design of recycled asphalt mixture.关键词
精细分离回收料/再生沥青/动力学/疲劳损伤活化能/疲劳寿命Key words
Refined RAP separation/Recycled binder blend/Kinetics/Activation energy of fatigue damage/Fatigue life分类
交通工程引用本文复制引用
刘栋,徐静娴,刘燕燕,董海东,罗雪..精细分离回收料再生沥青疲劳的动力学表征及寿命预估[J].材料科学与工程学报,2026,44(2):188-194,225,8.基金项目
浙江省交通运输厅科技项目(2023021) （2023021）
