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间接拉伸与单轴压缩模式沥青混合料动态模量比较分析

Keywords: 道路工程,沥青混合料,间接拉伸,单轴压缩,动态模量,主曲线,相位角,移位因子

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Abstract:

采用目前我国常用的5种沥青混合料,在间接拉伸试验模式下,用标点装配模式测量系统,准确测定沥青混合料的动态模量;根据时-温转换原则,建立了参考温度为20℃的动态模量及相位角主曲线;对2种试验模式下的5种沥青混合料的动态模量及相位角主曲线的进行了比较分析,得出2种动态模量值之间转化的拟合公式。结果表明2种试验模式下,沥青混合料的动态模量,相位角及移位因子均存在较为明显的区别;2种试验模式下动态模量相关关系拟合方程的拟合效果非常好。

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