沥青测力延度与黏韧性试验相关性分析  

Correlation Analysis between Tensile Elongation and Viscosivity Test of Asphalt

作　　者：龙花 LONG Hua(Guangdong Shengxiang Traffic Engineering Testing Co.,Ltd.Guangzhou 511400,China)

机构地区：[1]广东盛翔交通工程检测有限公司,广州511400

出　　处：《广东土木与建筑》2023年第12期105-107,112,共4页Guangdong Architecture Civil Engineering

摘　　要：为探讨测力延度试验和黏韧性试验之间的相关性,提出了复合改性橡胶沥青拉伸变形与荷载曲线的黏韧性及韧性改进计算方法,对不同温度下的黏韧性试验和测力延度试验结果进行对比,结果表明:两个试验的力学原理接近,试验过程获取的荷载-变形曲线相似;由两个试验计算得到的黏韧性和韧性具有相关关系,通过大量试验数据建立相关关系后,可采用测力延度试验代替黏韧性试验计算黏韧性和韧性指标。测力延度曲线在获取最大拉力和变形的同时,按本文提出的计算方法获取黏韧性和韧性指标,可从多角度评价沥青性能、丰富评价指标和评价手段。In order to investigate the correlation between tensile elongation test and viscosivity test,the improved calculation method of tensile deformation and load curve of compound modified rubber asphalt was proposed.The results of viscosivity test and tensile elongation test at different temperatures were compared.The results show that the mechanical principles of the two tests are basically similar,and the load-deformation curves obtained during the test process are similar.The viscosivity and toughness calculated by the two tests have a correla‐tion.After establishing a correlation with a large number of test data,the viscosivity and toughness indexes can be calculated by using the tensile elongation test instead of the viscosivity test.In addition to obtaining the maximum tension and deformation,the viscosivity and tough‐ness indexes can be obtained according to the calculation method proposed in this paper,so as to evaluate the asphalt properties from multi‐ple angles and enrich the evaluation indexes and means.

关 键 词：道路工程 韧性性 测力延度 复合改性 橡胶沥青 试验方法 

分 类 号：U416.217[交通运输工程—道路与铁道工程]