基于表面能理论的沥青与集料粘附及剥落机理分析  

Adhesion and Stripping Mechanism Analysis of Aggregate-asphalt System Based on Surface Energy Theory

作　　者：张平[1] 杨侣珍[2] 

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410076 [2]湖南交通职业技术学院路桥工程学院,湖南长沙410004

出　　处：《公路工程》2013年第4期187-190,共4页Highway Engineering

摘　　要：运用表面能理论对集料-沥青粘附和剥落过程进行了理论计算分析,推导了集料与沥青粘附和剥落过程的体系自由能变化计算式,并据此计算得出了四种典型集料与沥青组合体系的自由能变化值。计算结果表明:干燥环境下,集料与沥青粘附良好;在水环境条件下,沥青具有从集料表面剥落的自发趋势;集料与沥青之间的粘附行为存在最佳配伍关系。Based on the surface free energy theory,the adhesion and the raveling between aggregate and asphalt are proposed and analyzed.The equations,used to calculate the Gibbs free energy change of the aggregate-asphalt system,are derived out.Applying the equations,the free energy change of four typical aggregate-asphalt combination forms is obtained.The calculation results show： under dry condition,the aggregate-asphalt adhesion is good;while with the water presence,the mastic film will strip from the aggregate surface automatically.There is the best compatibility in the aggregate-asphalt adhesion behavior.

关 键 词：表面能 集料-沥青 粘附 剥落 

分 类 号：U414.1[交通运输工程—道路与铁道工程]