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AC-16沥青混合料高温稳定性试验

, PP. 10-15

Keywords: 道路工程,车辙试验,AC-16沥青混合料,影响因素,高温性能

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Abstract:

基于大量车辙试验结果,分析了沥青用量、碾压次数、抗车辙剂掺量及级配对AC-16沥青混合料高温稳定性的影响,并将AC-16抗车辙剂沥青混合料与普通沥青混合料(未掺抗车辙剂)的高温稳定性进行了对比分析。结果表明车辙试验最佳沥青用量比马歇尔试验少0.2%~0.3%;压实功过大或过小均可使沥青混合料的高温稳定性降低,施工中应严格控制碾压遍数;AC-16沥青混合料的最佳抗车辙剂掺量为0.4%~0.5%;适当增加AC-16沥青混合料中粗集料含量,形成骨架密实型结构能够有效改善其高温稳定性;AC-16抗车辙剂沥青混合料的动稳定度比普通沥青混合料有很大提高,平均提高幅度为32.9%。

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