二次老化对再生沥青混合料疲劳性能影响分析
发布时间：2018-10-10 18:37
【摘要】：针对再生沥青混合料在使用时存在的二次老化问题,对不同RAP掺配率下的沥青混合料进行试验室加速老化,并进行直接拉伸疲劳试验。结果表明,二次老化后沥青混合料的强度较老化前有所提高,疲劳寿命会有大幅度的降低,沥青混合料的疲劳寿命与应力比在双对数坐标中具有良好的线性关系。
[Abstract]:Aiming at the secondary aging problem of recycled asphalt mixture in use, the asphalt mixture with different RAP blending ratio was accelerated to aging in laboratory, and the direct tensile fatigue test was carried out. The results show that the strength of asphalt mixture after secondary aging is higher than that before aging, and the fatigue life of asphalt mixture will be greatly reduced, and the ratio of fatigue life to stress of asphalt mixture has a good linear relationship in the logarithmic coordinate.
【作者单位】： 珠海市规划设计研究院;
【分类号】：U414.1
[Abstract]:Aiming at the secondary aging problem of recycled asphalt mixture in use, the asphalt mixture with different RAP blending ratio was accelerated to aging in laboratory, and the direct tensile fatigue test was carried out. The results show that the strength of asphalt mixture after secondary aging is higher than that before aging, and the fatigue life of asphalt mixture will be greatly reduced, and the ratio of fatigue life to stress of asphalt mixture has a good linear relationship in the logarithmic coordinate.
【作者单位】： 珠海市规划设计研究院;
【分类号】：U414.1
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