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基于高温稳定性的沥青混合料时间-温度-荷载等效作用

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Keywords: 道路工程,等效作用,车辙试验,高温稳定性,荷载作用时间

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Abstract:

由于沥青和沥青混合料为黏弹塑性体,而荷载又是影响沥青路面高温稳定性的关键因素,沥青路面出现车辙的概率极大提高。利用荷载轮轮速、温度、荷载均可变化的车辙仪,以动稳定度为技术研究指标,研究温度变化、荷载作用时间变化、荷载大小变化对沥青混合料高温稳定性的影响,进而研究三者之间的等效作用。试验结果表明温度、荷载作用时间、荷载大小对沥青混合料高温稳定性均有显著影响,三者之间具有一定的等效作用,但在各因素比较宽的变化范围内并无明确的等效关系。

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