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
李超 1田泽华 1王岚 1高杰 2谢晓枫 3郭莹莹1
作者信息
- 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;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
- 2. 华东交通大学土木建筑学院,江西南昌 330000
- 3. 北京工业大学城市建设学部,北京 100000
- 折叠
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.
Abstract
In order to study the anti reflective cracking performance of warm mix recycled asphalt pavement,the in-fluence of Reclaimed Asphalt Pavement(RAP)content on the anti reflective cracking performance of warm mix re-cycled 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 nega-tively correlated;Under the same aging conditions,the crack propagation law of recycled asphalt mortar with differ-ent RAP contents is basically the same.After secondary aging,the reflection crack of recycled asphalt mortar accel-erates 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Key words
Reclaimed Asphalt Pavement(RAP)/warm mix recycled asphalt mortar/secondary aging/reflection cracking/Digital Image Correlation(DIC)technology引用本文复制引用
基金项目
国家自然科学基金(52368067)
国家自然科学基金(12262030)
内蒙古自治区高等学校"青年科技英才"项目(NJYT22079)
出版年
2024
国家科技期刊平台
NSTL
万方数据