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英安岩吸水率对沥青混合料的影响及处理方法

, PP. 18-22

Keywords: 道路工程,英安岩,吸水率,最佳油石比,路用性能

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Abstract:

以英安岩吸水率为研究对象,通过吸水率试验和马歇尔试验,分析了不同吸水率条件下沥青混合料最佳油石比的差异;采用正交试验和路用性能试验,验证了改善集料吸水率对沥青混合料最佳油石比及路用性能的影响,并分析了原因。结果表明英安岩集料吸水率越大,混合料最佳油石比越大,集料吸水率变化导致的最佳油石比差异直接影响混合料的施工性能和路用性能;添加0.1%的木质素纤维可有效改善英安岩集料吸水率变异性对混合料最佳油石比的不利影响,且其路用性能显著优于普通英安岩混合料。

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