摘要
阐述了车辙因子、不可恢复柔量等最常用沥青流变特性和抗车辙性能参数的最新研究成果。通过实例说明了PG等级相同的不同改性沥青抗车辙性能指标的差异。结果表明,按不同性能评价指标对三种改性沥青抗车辙性能的评价结果排序存在一致性。多应力蠕变恢复(MSCR)试验能区分不同沥青流变特性之间的差异和橡胶粉改性沥青应力敏感性,最终推荐MSCR试验为评价沥青的抗车辙性能的标准试验方法。
This paper presents a literature review covering the most used parameters rheological properties for the characterization of the rutting resistance of asphalt binders such as rutting parameter and the nonrecoverable compliance.The differences in rutting resistance performance indexes of different modified asphalts with the same PG grade are illustrated by examples.The rankings of binders from the less to the most susceptible material to rutting showed some similarities for the selected parameters.The MSCR test was able to underline marked differences in the rheological responses of the formulations that could not be directly observed for the other procedures,as well as the stress sensitivity of the rubber modified asphalt.The MSCR test was recommended as the best protocol for analyzing the rutting potential of binders.
作者
杨小宾
YANG Xiaobin(Chengde Traffic Survey and Design Institute Co.,Ltd.,Hebei Chengde 067000 China)
关键词
沥青
抗车辙性能
流变特性
沥青路面
研究进展
asphalt
rutting resistance
rheological properties
asphalt pavement
research progress
