东南大学学报（自然科学版）2016，Vol.46Issue(6)：1284-1289,6.DOI:10.3969/j.issn.1001-0505.2016.06.029
基于MHN复数模量模型的沥青玻璃化转变温度确定方法
Method determining for glass transition temperature on asphalt binders based on MHN complex modulus model
摘要
Abstract
To conveniently quantify the glass transition temperature,the visco-elastic properties of 70#and 90#virgin asphalt binders were evaluated using dynamic shear rheometer.A method for di-rectly calculating the glass transition temperature using visco-elastic parameters was proposed based on the MHN (modified Havriliak-Negami)complex model for describing the dynamic modulus mas-ter curve.First,the storage modulus and loss modulus master curves were constructed on the basis of the MHN model using frequency sweep data from dynamic shear tests under various isotherm condi-tions.Then,the reduced frequencies corresponding to the peaks of the loss modulus were calculated and the expression for glass transition temperature was deduced from WLF (Williams-Landel-Ferry) equation.The results show that MHN model can accurately characterize the storage modulus and lost modulus master curves.The glass transition temperature increase with the increase of the reference frequency.The calculated results show considerable consistency with the measured results in tempera-ture sweep tests,and the glass transition temperatures can be effectively determined using the MHN model for asphalt binders.关键词
沥青/玻璃化转变温度/黏弹性/时-温等效原理/低温性能Key words
asphalt binder/glass transition temperature/visco-elasticity/time-temperature superpo-sition principle/low-temperature performance分类
交通工程引用本文复制引用
陈静云,刘佳音,孙依人,王维营..基于MHN复数模量模型的沥青玻璃化转变温度确定方法[J].东南大学学报（自然科学版）,2016,46(6):1284-1289,6.基金项目
国家自然科学基金青年基金资助项目（51208080）． （）
