再生材料对旧沥青路面胶结料的再生性能影响研究.pdf

施工技术 2015年2月下 98 CONSTRUCTION TECHNOLOGY 第44卷第4期 D01:10.7672/sjs2015040098 再生材料对旧沥青路面胶结料 的再生性能影响研究* 吴正光1，陈娟1，康爱红1，黄铭2 (1.扬州大学建筑科学与工程学院，江苏扬州225127；2.泰州市公路管理处，江苏泰州225300) [摘要]为分析不同再生材料对旧沥青路面胶结料再生性能的影响，基于实际工程抽提回收得到不同老化程度的 旧沥青路面胶结料，应用新沥青材料与两种黏度等级的再生剂调配旧沥青路面胶结料制备成再生沥青，分析再生 沥青的黏度与针人度指标的变化规律，并对不同再生方法的再生效果进行了比较.试验结果表明：新沥青材料对 旧沥青路面胶结料的再生能力有限，再生剂对旧沥青路面胶结料性能指标的改善远优于新沥青；低黏度的再生剂 能较好地恢复旧沥青路面胶结料的针入度指标，但对于老化程度较低的旧沥青路面胶结料，会使其黏度指标下降 过快，而不能保证再生沥青的高温性能；建议老化等级较低的旧沥青路面胶结料采用黏度等级较高的再生剂再生 的方法，老化等级较重的旧沥青路面胶结料采用黏度等级较低的再生剂与新沥青共同再生的方法. [关键词]沥青路面；胶结料；新沥青材料；再生剂；性能 [中图分类号]U414 [文献标识码]A[文章编号]1002-8498(2015)04-0098-04 Research on Effect of Recycled Materials on Properties of Cementing Material of Aging Asphalt Pavement Wu Zhengguang' Chen Juan' Kang Aihong' Huang Ming2 (1.College of Civil Science and Engineering Yangzhou University Yangzhou Jiangsu 225127 China; 2.Taizhou Highway Station Taizhou Jiangsu 225300 China) Abstract:To analyze effect of different materials on properties of aging asphalt different aging degree of reclaimed asphalt pavements were chosen to obtain the aging asphalt new asphalt material and two kinds of viscosity grade of regenerant was added to aging asphalt to make recycled asphalt based on the analysis of change rule of viscosity and penetration index on recycled asphalt to pare the effect of different regeneration methods.The results show that new asphalt materials can't improve recycled performance of aging asphalt well regeneration agent on the improvement of the old asphalt pe...