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级配碎石性能的振动与击实成型对比试验

, PP. 19-24

Keywords: 道路工程,级配碎石,试验研究,振动成型,击实成型,性能关系

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Abstract:

？为建立振动成型和击实成型的转换关系,进行了3类典型级配碎石在振动和击实成型下的对比试验。结果表明:2种成型方法的物理指标和力学指标具有线性关系;振动成型的物理和力学指标优于击实成型;击实对级配碎石具有严重的破碎作用,且破碎作用存在临界空隙率;振动成型颗粒的定向作用使不同类型的级配碎石形成了良好的结构,物理和力学指标充分反映了材料结构类型的差异;而击实成型正好相反,由于材料和方法的不协调,使材料之间力学性能平均化。

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