厂拌温再生沥青混合料中新旧沥青的融合性研究  

Research of Blending Performance of Virgin and Reclaimed Asphalt in Plant Warm Recycled Asphalt Mixture

作　　者：秦永春[1] 黄颂昌[1] 徐剑[1] 王随原[1] 

机构地区：[1]交通运输部公路科学研究所,北京100088

出　　处：《公路交通科技》2015年第12期24-28,52,共6页Journal of Highway and Transportation Research and Development

基　　金："十二五"国家科技支撑计划项目(2014BAC07B01);沥青路面低碳建造技术及工程示范项目(2014BAC07B05)

摘　　要：新旧沥青的融合性是温再生沥青混合料技术性能的关键所在,通过性能试验分析了该类混合料中新旧沥青的融合性。采用劈裂强度、浸水劈裂强度、冻融前后的劈裂强度比以及间接拉伸模量等作为评价指标,分别测试了不同旧料掺量(30%,40%,50%)的常规温再生和沥青完全融合温再生这两种情况下沥青混合料试件的性能。结果表明:温再生沥青混合料试件的上述各指标总体上都随着回收旧料比例的增加而上升,并且比沥青完全融合时的温再生混合料试件指标都相应有所提高。在旧料掺量比例小于50%情况下,厂拌温再生混合料中新旧沥青的融合性良好。The blending performance of virgin and reclaimed asphalt is the key issue in warm recycled asphalt mixture,it is analysed by performance tests. Taking indirect tensile strength（ ITS）,soaked ITS,tensile strength ratio（ TSR） and indirect tensile modulus as the evaluation indicators,the performances of asphalt mixture specimens under the conditions of conventional warm recycling and the warm recycling that virgin asphalt blended with RAP completely with different RAP contents（ 30%,40% and 50%） are tested. The result shows that（ 1） the abovementioned indicators of conventional warm recycled asphalt mixture specimen increase with the increase of RAP content,and its indicators are higher than those of warm recycled mixture that virgin and reclaimed asphalt blended completely;（ 2） the virgin and reclaimed asphalt in plant warm recycled mixture can be blended well when the RAP content is less than 50%.

关 键 词：道路工程 回收沥青路面材料 融合性 厂拌温再生 温拌沥青混合料 

分 类 号：U416.217[交通运输工程—道路与铁道工程]