摘要
为了探讨乳化沥青冷再生混合料全面的性能参数,对0%-100%的6种不同RAP含量的乳化沥青冷再生混合料进行了室内试验研究与回归分析。结果表明:抗压回弹模量与抗压强度、劈裂抗拉强度与破坏劲度模量、弯拉应变与弯拉强度都随RAP用量的增加而呈线性减少;动稳定度随RAP用量的增加而呈指数函数减少;渗水系数随RAP用量的增加呈二次多项式减少;冻融劈裂强度比TSR随RAP用量的增加变化不大,但远低于规范的技术要求;同温下的抗压回弹模量与劈裂抗拉强度有较好幂函数关系。根据材料的抗压回弹模量与劈裂抗拉强度,把乳化沥青冷再生材料分主四类。
In order to discuss the performance parameters of cold reclaimed asphalt mixture with emulsified asphalt, laboratory tests and regression analysis on six mixtures having 0% to 100% RPA contents were carried out.The result shows that (1) all the compressive resilient modulus, compressive strength, split tensile strength, failure stiffness modulus, flexural-tensile strain and strength decrease linearly with the increment of RPA content; (2) both dynamic stability (DS) and water permeability coefficient decrease with RPA content following an exponential function and a quadratic polynomial function respectively; (3) the freezing-thawing split tensile strength rate (TSR) changes little with the increment of RPA content which is far below the requirement of standard and criteria; (4) the compressive resilient modulus and split tensile strength have a good power function relationship at the same temperature.According to the compressive resilient modulus and split tensile strength, the cold reclaimed asphalt mixture with emulsified asphalt was divided into four kinds.
出处
《公路交通科技》
CAS
CSCD
北大核心
2009年第7期27-32,37,共7页
Journal of Highway and Transportation Research and Development
基金
交通部西部交通建设科技资助项目(200431800002)
关键词
道路工程
沥青混合料
乳化沥青
回归分析法
冷再生
性能参数
road engineering
asphalt mixture
emulsified asphalt
regression method
cold recycling
performance parameter