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乳化沥青冷再生混合料路用性能试验研究

Keywords: 道路工程,沥青混合料,乳化沥青,回归分析法,冷再生,性能参数

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Abstract:

为了探讨乳化沥青冷再生混合料全面的性能参数,对0%~100%的6种不同RAP含量的乳化沥青冷再生混合料进行了室内试验研究与回归分析。结果表明抗压回弹模量与抗压强度、劈裂抗拉强度与破坏劲度模量、弯拉应变与弯拉强度都随RAP用量的增加而呈线性减少;动稳定度随RAP用量的增加而呈指数函数减少;渗水系数随RAP用量的增加呈二次多项式减少;冻融劈裂强度比TSR随RAP用量的增加变化不大,但远低于规范的技术要求;同温下的抗压回弹模量与劈裂抗拉强度有较好幂函数关系。根据材料的抗压回弹模量与劈裂抗拉强度,把乳化沥青冷再生材料分主四类。

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