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水、温拌剂对沥青-集料界面粘附能力的影响

, PP. 25-30

Keywords: 道路工程,沥青-集料界面,粘附模型,粘附能力,能量参数,温拌剂

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Abstract:

?为评价水、温拌剂对沥青-集料界面粘附能力的影响,基于表面自由能理论,建立了无水及有水条件下沥青-集料和温拌剂-沥青-集料界面的粘附模型,计算无水及有水条件下沥青-集料和温拌剂-沥青-集料之间的粘附功,构建能量参数EP1和EP2,利用能量参数的大小来分析水、温拌剂对沥青-集料界面粘附能力的影响规律。结果表明:在无水条件下,温拌剂的加入可以提高沥青-集料界面的粘附能力;但在有水条件下,温拌剂对水的敏感性极强,其加入使得沥青-集料界面的粘附能力急剧下降。

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