沥青常规指标与PG分级指标的关联关系研究  

Research on the Relationship between the Conventional Index and Performance-graded index of Asphalt

作　　者：张凌波 时敬涛 康剑翘 范维玉 罗辉 

机构地区：[1]中国石油大学重质油国家重点实验室,青岛市266580 [2]中油燃料油股份有限公司技术研发中心,青岛市266500

出　　处：《公路》2016年第2期172-176,共5页Highway

摘　　要：研究了沥青针入度、60℃动力黏度、软化点、当量软化点与车辙因子G*/sinδ之间的关系以及针入度与蠕变劲度S之间的关系。结果表明:针入度、软化点和当量软化点的对数值与车辙因子G*/sinδ的对数值之间存在很好的线性相关关系;针入度对数值与蠕变劲度S对数值之间存在较好的线性相关关系;60℃动力黏度与车辙因子G*/sinδ之间存在很好的线性相关关系。针对南美高硫原油生产的沥青,针入度与G*/sinδ之间的关联关系具有很好的适用性。In this paper, the relationships between the penetration, 60℃ asphalt viscosity, softening point, equivalent softening point and G^＊/sinδ of the asphalts are studied, and also the relationship between penetration and creep stiffness is investigated. It is pointed that there are good linear relationships between the logarithm of penetration, softening point, equivalent softening point and the logarithm of G^＊/sinδ, also a good linear relationship between the logarithm of penetration and the logarithm of creep stiffness, and there is a good linear relationship between 60℃ asphalt viscosity and asphalt G^＊/sinδ The relationship between penetration and G^＊/sinδ is fit for the asphalt produced by high-sulfur crude oil from South America.

关 键 词：沥青 常规指标 PG分级 关联关系 针入度 车辙因子 

分 类 号：U414.01[交通运输工程—道路与铁道工程]