基于耗散能法分析热拌及温拌再生SMA沥青混合料的疲劳特性

发布时间：2018-01-19 07:44

本文关键词： 疲劳特性热拌及温拌再生SMA沥青混合料耗散能法废旧沥青路面材料(RAP) Sasobit　出处：《北京工业大学学报》2014年12期 　论文类型：期刊论文

【摘要】：为了分析废旧沥青路面材料(reclaimed asphalt pavement,RAP)掺量和Sasobit对再生沥青玛蹄脂碎石混合料(stone mastic asphalt,SMA)疲劳性能的影响,本文设计并比较了不同RAP掺量(0%、20%、30%)的热拌及温拌SMA沥青混合料.对不同类型SMA沥青混合料进行四点梁弯曲疲劳试验,采用耗散能法分析其疲劳特性.研究表明:1)不同类型SMA沥青混合料的疲劳次数与累计耗散能之间的关系不会随RAP掺量改变以及是否添加Sasobit发生变化,其疲劳寿命与累计耗散能在双对数下,均表现出良好的线性关系,且具有唯一的关系方程.2)随着RAP掺量的增加,再生SMA沥青混合料的累积耗散能降低,疲劳寿命下降.3)Sasobit对温拌SMA沥青混合料耗散能量的能力有不利影响,而对温拌再生SMA沥青混合料影响不大.
[Abstract]:In order to analyze the waste asphalt pavement material, claimed asphalt pavement. Effects of rap content and Sasobit on fatigue properties of recycled bitumen mastic mixture stone mastic asphalta SMAs. This paper designs and compares hot mix and warm mix SMA asphalt mixture with different RAP content. Four point beam bending fatigue test is carried out for different types of SMA asphalt mixture. The fatigue characteristics were analyzed by dissipative energy method. The relationship between fatigue times and cumulative dissipation energy of different types of SMA asphalt mixture does not change with the content of RAP and whether or not to add Sasobit. The fatigue life and cumulative dissipation energy show a good linear relationship under the double logarithm, and have a unique relation equation. 2) with the increase of RAP content. The cumulative dissipation energy of recycled SMA asphalt mixture is reduced, and the fatigue life is decreased. 3% Sasobit has a negative effect on the energy dissipation ability of warm mix SMA asphalt mixture. But it has little effect on warm mix recycled SMA asphalt mixture.
【作者单位】：北京建筑大学土木与交通工程学院;
【基金】：北京市属高等学校高层次人才引进与培养计划项目资助(PXM2013-014210-000165)
【分类号】：U414
【正文快照】： Evaluation on Fatigue Properties of Hot and Warm RecycledSMA Mixture Based on Energy Dissipation MethodJI Jie,XU Ying,SUO Zhi,XI Jin(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,Ch

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