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沥青面层用粗集料针片状颗粒和含泥量技术指标研究

, PP. 17-21

Keywords: 道路工程,沥青混凝土,试验,路用性能,粗集料,面层

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Abstract:

根据高速公路表面层沥青混合料用粗集料质量技术要求,针对石灰岩粗集料的针片状含量对集料压碎值、骨架的影响和对沥青混凝土的高温稳定性、水稳定性的影响进行了试验研究,并分析了集料含泥量对沥青混凝土的水稳定性、高温稳定性的影响。研究结果表明,针片状含量对于集料性能影响显著,含泥量对于沥青混凝土的各项路用性能都有明显影响。对高速公路沥青面层用粗集料,针片状颗粒含量按10%控制,含泥量技术指标建议采用0.5%控制。

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