真空密封法测定沥青混合料毛体积相对密度试验  

Research on Asphalt Mixture Bulk Specific Gravity by Vacuum Sealing Method

作　　者：吴国雄[1,2] 杨锐[1] 杨大田[2] 袁传泯[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]重庆交通大学山区道路结构与材料重庆市重点实验室,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2010年第6期896-899,983,共5页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金面上项目(51078374);教育部博士点基金项目(20095522110001)

摘　　要：使用真空密封法,测定了不同碾压次数成型试件的毛体积相对密度,探讨了测定时产生误差的原因;与传统表干法以及蜡封法测定的结果进行对比分析。结果表明:真空密封状态与密封袋的材质是影响试验误差的主要因素;使用真空密封法测定的结果重复性较好,其测定值与表干法以及蜡封法测定值间有良好的线性关系,但测定值间存在显著性差异。Through vacuum sealing method,bulk specific gravity of rutting core samples after being rolled different times was measured,reasons for the errors were discussed;comparative analysis was made between results by conventional method of saturated-surface dry method and by wax-enveloped method.Results showed that the vacuum sealed condition and quality of sealed bag were the main factors for the error.The result by vacuum sealing method had good reproducibility,and its measured value had good linear relationship with the values measured by saturated-surface dry method and by wax-enveloped method;however,there were significant differences between values.

关 键 词：沥青混合料 毛体积相对密度 真空密封法 对比研究 

分 类 号：U416.217[交通运输工程—道路与铁道工程]