乳化沥青复合冷再生混合料研究  

Primary research on emulsified asphalt cold recycled mixture added recycled materials of base course

作　　者：任瑞波[1] 朱树青[1] 徐强[1] 马川义 

机构地区：[1]山东建筑大学交通工程学院,山东济南250101 [2]山东省交通规划设计院,山东济南250000

出　　处：《山东建筑大学学报》2015年第1期8-12,共5页Journal of Shandong Jianzhu University

基　　金：国家自然科学基金项目(51278288)

摘　　要：路面基层废旧料的研究利用可节约工程建设成本,缓解路面养护带来的资源和环境压力。文章通过对路面基层与面层废旧材料分析与设计,确定最佳含水率与合适沥青用量,通过劈裂试验和冻融试验,评价掺加基层废旧料的乳化沥青复合冷再生混合料的性能。结果表明:矿料类型对乳化沥青冷再生混合料最佳含水率和劈裂强度影响较大;在低油量范围内,掺加基层废旧料的乳化沥青复合冷再生混合料劈裂强度较高,具有一定的抗弯拉能力和抗水损害能力,抗冻融能力一般;乳化沥青复合冷再生混合料具有感温性,属于粘弹性材料;掺加基层废旧料乳化沥青复合冷再生混合料性能够基本满足再生技术规范使用要求。The utilization of old base course materials could save the cost of engineering construction and ease the pressure for resources and environment in pavement maintenance. Based on these,the research on RAP of base course was conducted. Material analysis and grade design were executed to determine the optimum moisture content and appropriate asphalt content and relatively performance tests were carried out under the optimum moisture and suitable asphalt content. Tests results show that mineral aggregate type of emulsified asphalt cold recycled mixture had a greater influence on the best moisture content and the splitting strength; emulsified asphalt cold recycled mixture mixed with the materials of base course has certain flexural tensile strength to resistant bending and water damage;the ability of mixture is normal to resist freezing and thawing; the composite materials is sensitive to temperature which said it belong to viscous-elastic material; the composite materials meet technical requirement of cold recycled mixture using on lower layers of pavement.

关 键 词：乳化沥青 冷再生混合料 最佳含水率 沥青含量 劈裂强度 

分 类 号：U414[交通运输工程—道路与铁道工程]