沥青低温性能评价方法研究进展  

Progress Report of Asphalt Low-temperature Evaluation Method

作　　者：陈华鑫[1] 李晓明 王秉纲[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,西安710064 [2]陕西省交通厅,西安710075

出　　处：《材料导报》2007年第F11期385-387,共3页Materials Reports

基　　金：西部交通建设科技项目(2001-318-000-38)

摘　　要：对沥青低温性能的评价方法进行了分析比较,论述了这些方法的优缺点,结合Hajek模型、Haas加拿大机场道面模型和Superpave低温开裂模型的研究成果,分析了路面低温裂缝的性能预测结果,表明沥青材料的劲度模量是预估沥青路面低温开裂的基本参数,它和松弛性能都是评价沥青低温性能的核心指标,因此要求沥青劲度模量S不能过大、松弛性能m不能过小。Through the comparison of low temperature performance evaluation methods of asphalt, their merits and demerits are discussed. Based on the Hajek model, Haas Canada airport road model and Superpave support and performance models, low temperature cracking performance is mentioned. The result shows that the stiffness is the basic parameter to forecast the asphalt pavement low temperature cracking, and asphalt stiffness and relaxing perform- ance are key evaluation parameters. The result also shows that the stiffness S is not allowed high,and relaxing parameter m is not allowed low to asphalt.

关 键 词：低温性能 评价方法 低温开裂模型 评价指标 

分 类 号：U416.217[交通运输工程—道路与铁道工程] TP393.4[自动化与计算机技术—计算机应用技术]