温拌再生沥青砂浆二次老化前后抗反射开裂性能评价  

Evaluation of Anti Reflective Cracking Performance of Warm Mix Recycled Asphalt Mortar Before and After Secondary Aging

作　　者：李超[1,2] 田泽华 王岚[1,2] 高杰 谢晓枫 郭莹莹[1,2] Li Chao;Tian Zehua;Wang Lan;Gao Jie;Xie Xiaofeng;GuoYingying(School of Civil Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Key Laboratory of Civil Engineering Structures and Mechanics,Inner Mongolia University of Technology,Hohhot 010051,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330000,China;School of Urban Construction,Beijing University of Technology,Beijing 100000,China)

机构地区：[1]内蒙古工业大学土木工程学院,内蒙古自治区呼和浩特010051 [2]内蒙古工业大学内蒙古自治区土木工程结构与力学重点实验室,内蒙古自治区呼和浩特010051 [3]华东交通大学土木建筑学院,江西南昌330000 [4]北京工业大学城市建设学部,北京100000

出　　处：《市政技术》2024年第9期183-190,共8页Journal of Municipal Technology

基　　金：国家自然科学基金项目(52368067,12262030);内蒙古自治区高校青年科技英才项目(NJYT22079)。

摘　　要：为研究温拌再生沥青路面的抗反射开裂性能,结合Overlay Tester(OT)试验与数字图像相关(Digital Image Correlation,DIC)技术,研究了长期老化后废旧沥青混合料(Reclaimed Asphalt Pavement,RAP)掺量对温拌再生沥青砂浆抗反射开裂性能的影响。研究结果表明:经过二次老化后,RAP掺量对温拌再生沥青砂浆的抗反射开裂性能影响显著,二者成负相关关系;在相同的老化条件下,不同RAP掺量的再生沥青砂浆裂缝扩展规律基本一致,二次老化后再生沥青砂浆的反射裂缝在初期开裂速度加快。In order to study the anti reflective cracking performance of warm mix recycled asphalt pavement,the influence of Reclaimed Asphalt Pavement(RAP)content on the anti reflective cracking performance of warm mix recycled asphalt mortar after long-term aging was studied by combining Overlay Tester(OT)test with Digital Image Correlation(DIC)technology.The research results indicate that the RAP dosage has a significant impact on the anti reflective cracking performance of warm mixed recycled asphalt mortar after secondary aging.And the two are negatively correlated;Under the same aging conditions,the crack propagation law of recycled asphalt mortar with different RAP contents is basically the same.After secondary aging,the reflection crack of recycled asphalt mortar accelerates in the initial cracking speed.

关 键 词：RAP 温拌再生沥青砂浆 二次老化 反射开裂 DIC技术 

分 类 号：U414[交通运输工程—道路与铁道工程]