多年冻土地区沥青混合料抗压回弹模量性能研究  

Analysis on Compressive Resilience Modulus of Asphalt Mixture in Permafrost Areas

作　　者：韦佑坡[1,2] 司伟[1] 马骉[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]河南省交通科学技术研究院有限公司,郑州450006

出　　处：《武汉理工大学学报》2012年第3期55-58,96,共5页Journal of Wuhan University of Technology

基　　金：西部交通建设科技项目(2009318 000 027);中交寒区道路工程重点实验室开放基金(HSKF2007-04)

摘　　要：针对多年冻土地区常年温度低、温差大等特殊气候条件,通过沥青混合料室内抗压回弹模量试验,分析温度、油石比、沥青种类和级配对混合料抗压回弹模量的影响。结果表明,沥青混合料回弹模量随温度的升高而降低;对比不同级配沥青混合料可知,低温下,SBR改性AC-16混合料的抗压回弹模量与AC-13相当;存在对应于抗压回弹模量达到最大值时的最佳油石比,范围约在6.0%～7.0%之间;SBR改性沥青混合料的低温抗压回弹模量明显优于130#道路石油沥青混合料。混合料抗压回弹模量值的常对数与温度及油石比的关系符合二元一次函数。用SPSS相关分析方法分析各个影响因素对混合料抗压特性的影响程度可知,温度和沥青种类对抗压回弹模量影响显著。Aimed at the climate feature of low temperature and large temperature difference in permafrost areas,effects of temperature,asphalt-aggregate ration,asphalt types and aggregate gradation on the compressive resilience modulus of asphalt mixture were analyzed by uniaxial compression test.The analysis of the results shows that compressive resilience modulus become lower with the increasing of temperature.Comparisons of different gradation types indicate that the compressive resilience modulus of AC-16 of SBR modified asphalt is as well as AC-13 of SBR modified under low temperature.Corresponds to maximum values of compressive resilience modulus of asphalt mixture,there are optimum proportion of asphalt between 6.0%~7.0%.The compressive properties of SBR modified mixture is superior to that of No.130 paving asphalt mixture under low temperature.The relation between the lod score of the compressive modulus and temperature and asphalt-aggregate ration approximately obeys function of two variables.The results also revealed that temperature and asphalt types have greatly affected on compressive resilience modulus of asphalt mixture among influencing factors based on correspondence analysis of SPSS.

关 键 词：道路工程 沥青混合料 多年冻土 抗压回弹模量 温度 级配 

分 类 号：U414.75[交通运输工程—道路与铁道工程]