摘要
通过美国国家公路合作研究计划项目(NCHRP)9-19简单性能试验(Simple Performance Test,简称SPT)的3个关键测试参数即沥青混合料动模量(/E*/)、重复加载永久变形(流动数)和静态蠕变(流变时间)的试验分析,研究SBS、PR、RS 3种改性沥青混合料的高温稳定性能,说明SPT是简单实用、经济有效的沥青混合料性能评价方法,可用于沥青混合料的设计和验证。
Based on test analysis for 3 key test parameters,i.e.dynamic modulus of asphalt mixture(|E*|),permanent deformation by repetitive loading(number of flow)and static creep deformation(time of flowing deformation)in Simple Performance Test(SPT)of National Cooperative Highway Research Program(NCHRP)9-19,this paper studies high-temperature stable performance of SBS,PR and RS modified asphalt mixtures,and describes performance evaluation methods that verify SPT is a simple and practical,economical and effective asphalt mixture and can be used for design and verification of asphalt mixtures.
出处
《公路交通技术》
2010年第6期24-28,共5页
Technology of Highway and Transport
关键词
改性沥青混合料
简单性能试验
动模量
流变时间
流动数
modified asphalt mixture
Simple Performance Test(SPT)
dynamic modulus
time of flowing deformation
number of flow