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高抗剪能力粗集料级配设计方法

, PP. 27-32

Keywords: 道路工程,沥青混合料,细观力学分析,粗集料,空间排列,剪切模量

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Abstract:

?通过对粗集料散体进行细观力学分析,应用不连续介质理论研究粗集料力学性质,根据颗粒在空间的6种不同排列模型,建立了散体细观力学模型及粗集料剪切模量的计算公式;从理论上分析了粗集料抗剪切性能提高的内在机理,并提出了粗集料抗剪级配设计方法,以抗剪性能作为主要指标进行逐级填充;最后通过室内试验进行比较分析。结果表明:新设计出的级配高温稳定性好,可有效减少公路车辙病害。

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