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.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
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)
关键词
沥青混合料
毛体积相对密度
真空密封法
对比研究
asphalt mixture
bulk specific gravity
vacuum sealing method
comparative research
