摘要
为了分析动态模量|E*|、|E*|/sinφ指标预测评估沥青混合料高温稳定性的可靠性,进行了在不同应变和频率下的SPT动态模量试验,研究了沥青混合料的动态模量与相位角随频率的变化规律,同时对不同沥青混合料的动态模量|E*|及抗车辙因子|E*|/sinφ进行了对比分析。结果表明:沥青混合料不同频率下动态模量E*和|E*|/sinφ变化趋势大致相同,表明|E*|/sinφ可以作为SPT动态模量试验评价沥青混合料高温抗变形能力的参考指标;30#普通沥青混合料的高温抗变形性能最强。
In order to analyze the dynamic modulusindex of |E*|,|E*|/sinφto predict the reliability of high temperature stability of asphalt mixture,the SPT dynamic modulus experiments at different strains and frequencies were carried out mixture.The dynamic modulus and the variation of phase angle with frequency were studied,and the dynamic modulus |E*| and anti- rutting factor |E*|/sinφamong different asphalt mixtures were compared.The results show that the dynamic modulus E* and |E*|/sinφ of asphalt mixture have the same trend with frequency,and |E*|/sinφ can be used as a reference index for evaluating the high temperature deformation resistance of asphalt mixture by SPT dynamic modulus test.30#ordinary asphalt mixture has the strongest high temperature deformation resistance.
作者
李盛
范萌萌
马云刚
LI Sheng;FAN Meng-meng;MA Yun-gang
出处
《内蒙古公路与运输》
2019年第3期1-4,共4页
Highways & Transportation in Inner Mongolia
基金
国家自然科学基金项目(51878076)
湖南省自然科学基金资助项目(2018JJ2433)
关键词
动态模量
沥青混合料
SPT
高温稳定性
dynamic modulus
asphalt mixture
SPT
high temperature stability
