二次老化對再生瀝青混合料疲勞性能影響分析
發(fā)布時間：2018-10-10 18:37
【摘要】：針對再生瀝青混合料在使用時存在的二次老化問題,對不同RAP摻配率下的瀝青混合料進(jìn)行試驗室加速老化,并進(jìn)行直接拉伸疲勞試驗。結(jié)果表明,二次老化后瀝青混合料的強(qiáng)度較老化前有所提高,疲勞壽命會有大幅度的降低,瀝青混合料的疲勞壽命與應(yīng)力比在雙對數(shù)坐標(biāo)中具有良好的線性關(guān)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.
【作者單位】： 珠海市規(guī)劃設(shè)計研究院;
【分類號】：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.
【作者單位】： 珠海市規(guī)劃設(shè)計研究院;
【分類號】：U414.1
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5 g穸，
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