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温拌再生沥青砂浆二次老化前后抗反射开裂性能评价

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

Reclaimed Asphalt Pavement(RAP)warm mix recycled asphalt mortarsecondary agingreflection crackingDigital Image Correlation(DIC)technology

李超、田泽华、王岚、高杰、谢晓枫、郭莹莹

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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

华东交通大学土木建筑学院,江西南昌 330000

北京工业大学城市建设学部,北京 100000

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RAP 温拌再生沥青砂浆 二次老化 反射开裂 DIC技术

国家自然科学基金国家自然科学基金内蒙古自治区高等学校"青年科技英才"项目

5236806712262030NJYT22079

2024

市政技术
中国市政工程协会 北京市政路桥股份有限公司 北京市政建设集团有限责任公司 北京市市政工程研究院

市政技术

影响因子:0.385
ISSN:1009-7767
年,卷(期):2024.42(9)