基于GTM试验的沥青混合料高温性能评价指标  

New Indexes for High-temperature Performance Evaluating of Asphalt Mixture

作　　者：吴传海[1,2] 

机构地区：[1]华南理工大学土木与交通学院,广州510640 [2]广东华路交通科技有限公司,广州510420

出　　处：《科学技术与工程》2011年第6期1264-1268,共5页Science Technology and Engineering

基　　金：国家自然科学基金青年基金(51008132);广东省交通运输厅科技项目(2003-12)资助

摘　　要：通过对不同沥青混合料GTM旋转压实试验各项参数的研究,并将其与相应的三轴重复荷载蠕变试验结果进行相关性分析,得出:利用GTM旋转压实试验得到的压实曲线参数K1(从开始压实至97%密实度间的压实曲线平均斜率)可以较好地表征沥青混合料的抗高温稳定性能,其与三轴重复荷载蠕变试验的蠕变劲度模量指标具有较高的相关性,线性相关系数在0.90以上,参数K1可以作为评价沥青混合料抗高温稳定性能的一种简易而实用方法。A research on variable paramenters of GTM tests of different asphalt mixture is careied out.A corelative analysis was made between those parameters and laboratory results of the corresponding triaxail repeated load creep tests.Parameter K1 of compaciton curve which is obtained from GTM test（K1 here refers to the average slope of compaciton curve from the start of compaciton to 97% density） can better show the high temperature stability performance of asphalt mixture as parameter K1 has a good correlative relationship with creep stiffness modulus of triaxial repeated load creep test,and the linear correlation coefficient is above 0.90.Thus,K1 can be adopted as a simple and practical method to evaluate high temperature stability performance of asphlat mixture.

关 键 词：道路工程 旋转压实剪切试验机 沥青混合料 高温性能 评价指标 

分 类 号：U414.75[交通运输工程—道路与铁道工程]