| 沥青混合料时间-温度-老化等效性原理及应用 |
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| 引用本文： | 郑健龙,吕松涛,田小革.沥青混合料时间-温度-老化等效性原理及应用[J].长沙理工大学学报(自然科学版),2006,3(3):27-35. |
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| 作者姓名： | 郑健龙 吕松涛 田小革 |
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| 作者单位： | 长沙理工大学公路工程学院,湖南,长沙,410076 |
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| 摘 要： | 粘弹性材料力学行为的主要特征是它的时间相关性,其本质在于材料内部时钟或特征时间的存在,这个特征时间受多种因素的影响,研究材料特征时间变化往往采用材料粘度的自由体积理论.根据自由体积理论,推导了表征时-温等效关系的WLF方程.老化同样影响材料的粘度,由已有的蠕变试验结果推导了沥青混合料的时间-温度、时间-老化、温度-老化等效关系式,这对研究沥青混合料的力学行为、结构分析以及寿命预估等具有重要的意义和价值.
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| 关 键 词： | 沥青混合料 自由体积理论 WLF方程 时间温度老化等效 |
| 文章编号： | 1672-9331（2006）03-0027-09 |
| 收稿时间： | 2006-09-11 |
| 修稿时间： | 2006年9月11日 |
The time-temperature-aging equivalent principle of asphalt mixtnre and its application |
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| ZHENG Jian-long,LV Song-tao,TIAN Xiao-ge.The time-temperature-aging equivalent principle of asphalt mixtnre and its application[J].Journal of Changsha University of Science and Technology:Natural Science,2006,3(3):27-35. |
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| Authors: | ZHENG Jian-long LV Song-tao TIAN Xiao-ge |
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| Institution: | College of Highway Engineering, Changsha University of Science and Technology, Changsha 410076, China |
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| Abstract: | The main mechanics behavior character of viscoelastic material is its time dependence,which lies in the existence of the interior timepiece or the characteristic time,which is influenced by many factors.The free volume theory of material viscosity is usually used to study the characteristic time.Based on this theory,this paper deduced the time-temperature equivalent relation of Williams-Landel-Ferry(WLF) equation.Aging influences the viscosity as well.Through the creep test,this paper deduced the time-temperature,time-aging,temperature-aging equivalent equation.It has a great significance and value in mechanics behavior study,structure analysis and life prediction of asphalt mixture. |
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| Keywords: | asphalt mixture free volume theory WLF equation time-temperature-aging equivalence |
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