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黏层对不同类型路面组合界面力学特性的影响

, PP. 22-30

Keywords: 道路工程,层间黏结,直剪试验,界面组合,黏层

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Abstract:

?为探讨黏层材料的类型、喷洒量、养护时间及试验温度及试件级配对路面界面剪切强度的影响,选择阳离子快裂乳化沥青(CRS-1)、橡胶乳化沥青作为黏层材料,利用直剪试验仪来探讨黏层对沥青混凝土界面力学性质的影响。结果表明:界面剪切强度受黏层养护时间的影响,通过黏层材料的破乳比率或黏度发展能合理的量化黏层破乳时间,不同黏层试件的界面凝聚力由大到小排序依次为密级配-密级配(DA-DA)、排水-密级配(PA-DA)、排水-沥青玛蹄脂碎石级配(PA-SMA);温度变化对沥青混凝土界面剪切强度与界面凝聚力都有显著的影响,PA-SMA界面剪切强度受温度变化影响最小。

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