级配及抗车辙剂对沥青混合料抗车辙性能的影响分析

发布时间：2018-11-06 07:37

【摘要】：为讨论同一种抗车辙剂对不同粒径沥青混合料抗车辙性能的改善效果以及比较分析不同措施对抗车辙性能改善的程度,依托实体工程,采用调整级配及添加KTL(垦特莱)抗车辙剂2种方式来提高沥青混合料的抗车辙性能。并基于车辙试验及单轴动态蠕变试验比较不同方式对沥青混合料抗车辙性能的影响。首先,采用马歇尔试验进行了7种沥青混合料的级配设计和最佳油量的确定;而后,基于室内车辙试验和单轴压缩动态蠕变试验结果,分析级配及抗车辙剂对不同粒径沥青混合料抗车辙性能的影响。结果表明,2种方式皆可改善沥青混合料的抗车辙性能,且改善效果均依赖于沥青混合料的粒径。相比之下,添加抗车辙剂的改善效果更为明显,同时对粒径的依赖性较小。
[Abstract]:In order to discuss the improvement effect of the same kind of anti-rutting agent on the rutting resistance of asphalt mixture with different particle size and to compare and analyze the degree of improving the rutting performance of different measures against rutting, we rely on solid engineering. The rutting resistance of asphalt mixture was improved by adjusting gradation and adding KTL anti-rutting agent. On the basis of rutting test and uniaxial dynamic creep test, the effects of different ways on rutting resistance of asphalt mixture were compared. Firstly, Marshall test is used to design the gradation of seven kinds of asphalt mixture and determine the optimum oil content. Then, based on the results of indoor rutting test and uniaxial compression dynamic creep test, the effects of gradation and anti-rutting agent on rutting resistance of asphalt mixtures with different particle sizes are analyzed. The results show that both methods can improve the rutting resistance of asphalt mixture, and the improvement effect depends on the particle size of asphalt mixture. In contrast, the improvement effect of adding anti-rutting agent is more obvious, and the dependence on particle size is less.
【作者单位】：哈尔滨工业大学交通科学与工程学院;天津市市政工程设计研究院;
【基金】：国家自然科学基金项目(51278159,51008099) 哈尔滨工业大学科研创新基金项目(HIT.NSRIF.2009103)
【分类号】：U414

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