摘要
沥青混合料模量是沥青路面结构分析的重要计算参数.对3种高模量沥青混合料及SBS改性沥青混合料和A-70沥青混合料进行动态模量和静态回弹模量试验,分析沥青混合料模量分布规律、影响因素以及动态模量与静态回弹模量的相关性.结果表明:相同试验条件下高模量沥青混合料的模量明显大于对比沥青混合料,且随着频率的降低,高模量沥青混合料的动态模量增大倍数增大;沥青混合料的静态回弹模量与低频下的动态模量呈指数关系,因此当试验条件受限时可采用沥青混合料静态回弹模量值对动态模量值进行预估.
The modulus of asphalt mixture is an important parameter in asphalt pavement structure analysis. The tests for dynamic modulus and static resilient modulus were conducted reguarding three kinds of high modulus asphalt mixtures, SBS modified asphalt mixture and A - 70 # asphalt mixture. The distribution and influencial factors of modulus and the correlation between the two kinds of modulus were analyzed. The results indicate that the modulus of high modulus asphalt mixture is significantly larger than that of the contrastive asphalt mixture at the same testing conditions, and the magnification of dynamic modulus increases with the decrease of frequency. The static resilient modulus of asphalt mixture has an exponential relation with the dynamic modulus at low frequency, and the values of static resilient modulus can be used to estimate the dynamic modulus if the test conditions are limited.
出处
《上海理工大学学报》
CAS
北大核心
2014年第2期194-198,共5页
Journal of University of Shanghai For Science and Technology
关键词
道路工程
沥青混合料
高模量沥青
动态模量
回弹模量
相关性
road engineering
asphalt mixture
high modulus asphalt
dynamic modulus
resilient modulus
correlation
