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。
In order to discuss the improvement effects of an anti-rutting additive on rutting resistance of asphalt mixtures with different particle sizes of aggregate, and compare the rutting resistance improvement levels of different measurements, combining with an actual project, gradation adjustment and KTL anti-rutting additive addition are adopted to enhance the rutting resistance of asphalt mixture. Besides, the effects of both ways on asphalt mixtures rutting resistance are compared based on wheel tracking test and uniaxial dynamic creep test. First, the gradation design and optimum asphalt content of 7 asphalt mixtures are obtained based on Marshall test. Then, the effects of gradation and additive on the rutting resistance of asphalt mixtures with different particle sizes of aggregate are analysed based on indoor wheel tracking test and uniaxial dynamic creep test. The results indicate that both gradation adjustment and anti-rutting additive addition can enhance the rutting resistance, and the improvement effects on the rutting resistance for both cases depend on the aggregate sizes of asphalt mixture. In contrast, the improvement extent of the former is more dependent on particle sizes compared with the latter.
出处
《公路交通科技》
CAS
CSCD
北大核心
2014年第2期27-31,46,共6页
Journal of Highway and Transportation Research and Development
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)
关键词
道路工程
抗车辙
车辙试验
单轴动态蠕变试验
级配
抗车辙剂
road engineering
rutting resistance
wheel tracking test
uniaxial dynamic creep test
gradation
anti-rutting additive
