温度对温拌橡胶沥青混合料体积参数的影响.pdfVIP

学兔兔 第 16卷第 3期 建 筑 材 料 学 报 Vo1．16，No．3 2013年6月 JOURNAL OF BUILDING MATERIALS Jun．，2013 文章编号：1007—9629(2013)03—0539—05 温度对温拌橡胶沥青混合料体积参数的影响 王 翼 ， 刘黎萍， 孙立军 (同济大学 道路与交通工程教育部重点实验室，上海 201804) 摘要：通过室内试验研究了拌和与成型温度对添加温拌剂的不同级配橡胶沥青混合料体积参数 的影响．设计了3种填隙方式的热拌橡胶沥青混合料，对添加DAT—H5温拌剂、采用不同拌和及 成型温度的混合料体积参数进行了对比分析，并利用车辙与冻融劈裂试验验证了温拌剂的有效 降温幅度．结果表明：油石比对温拌橡胶沥青混合料的技术可行性影响显著；拌和温度对温拌剂 降低橡胶沥青混合料所需成型温度的作用影响较为明显；以空隙率为指标，温拌橡胶沥青玛蹄 脂碎石混合料拌和与成型温度较热拌橡胶沥青混合料可降低约 30℃，高温稳定性良好，但水稳 定性有所下降． 关键词：温拌；橡胶沥青；体积参数；温度 中图分类号：U414 文献标志码：A doi：10．3969／j．issn．1007—9629．2013．03．030 Influence of Temperature on Volumetric Parameters of Asphalt Rubber Mixture with Warm—Mix Additive WANG Yi， L，ULi—ping， SUN Li— 乱” (Key Laboratory of Road and Traffic Engineering of Ministry of Education，Tongji University，Shanghai 201804，China) Abstract：Influence of mixing and compaction temperature on volumetric parameters was analyzed for dif— ferently graded asphalt rubber mixtures with warm—mix additive．Best asphalt—aggregate ratios of asphalt rubber mixtures with three different gradations and filler contents were determined by the Marshall test firstly．Mixture samples with DAT—H5 were made with different mixing and compaction temperatures．A comparative analysis of volumetric parameters was conducted and evaluated by the rutting test and freeze— thaw split test．The results show that the asphalt—aggregate ratio determines the technical feasibility of as— phalt rubber mixture with DAT—H5 The mixing temperature has significant effect on compaction tempe