| RAP中有效沥青膜厚度测定 |
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| 引用本文： | 成志强,陈先勇,陈辉强,侯俊,徐栋良.RAP中有效沥青膜厚度测定[J].重庆交通大学学报(自然科学版),2012,31(6):1149-1153,1161. |
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| 作者姓名： | 成志强 陈先勇 陈辉强 侯俊 徐栋良 |
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| 作者单位： | 1. 重庆交通大学土木建筑学院,重庆,400074
2. 重庆重交再生资源开发有限公司,重庆,400060 |
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| 基金项目： | 重庆交通大学研究生教育创新基金项目，重庆市博士后基金资助项目 |
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| 摘 要： | 在分析旧沥青混合料(RAP)中旧沥青存在状态的基础上提出了RAP有效沥青膜厚度的概念;通过再生混合料构成分析进行有效沥青公式推导,计算RAP中有效沥青含量;采用比表面积系数法计算RAP中有效沥青膜的厚度;通过分散活化处理RAP沥青表面,进一步提高RAP有效沥青膜厚度。研究发现:RAP混合料表面总沥青膜厚度为4.889μm,再生混合料、E再生混合料、F-E再生混合料中RAP有效沥青膜厚度分别为2.912,2.785,4.604μm,说明外加剂F-E对RAP混合料颗粒表面具有活化作用,提高了RAP表层有效沥青膜厚度。
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| 关 键 词： | 旧沥青混合料 有效沥青 沥青膜厚度 表面积系数法 |
Thickness Testing of Effective Asphalt Film in RAP |
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| Cheng Zhiqiang
,
Chen Xianyong
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Chen Huiqiang
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Hou Jun
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Xu Dongliang.Thickness Testing of Effective Asphalt Film in RAP[J].Journal of Chongqing Jiaotong University,2012,31(6):1149-1153,1161. |
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| Authors: | Cheng Zhiqiang Chen Xianyong Chen Huiqiang Hou Jun Xu Dongliang |
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| Institution: | 1.School of Civil Engineering & Architecture,Chongqing Jiaotong University,Chongqing 400074,China; 2.Chongqing ZONJO Recycling Development Co.,Ltd.,Chongqing 400060,China) |
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| Abstract: | The concept of effective asphalt film thickness in RAP is put forward based on the analysis of the old asphalt state in RAP;secondly,the thickness formulas of effective asphalt film in RAP are derived by reclaimed asphalt mixture compositions analysis to calculate the content of effective asphalt in RAP;thirdly,surface area coefficient method is used to calculate the thickness of effective asphalt film in RAP;finally,the surfaces of RAP are dispersed by activation treatment to improve the RAP effective asphalt film thickness.The results are found that: the thickness of asphalt film in RAP is 4.889μm,thickness of asphalt film in RAP about,recycled asphalt mixture,recycled asphalt mixture E,recycled asphalt mixture F-E is 2.912μm,2.785μm,4.604μm respectively;meanwhile,it is indicated that F-E has an activation on RAP mixture surface,which improves the effective film thickness of asphalt in RAP surface further. |
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| Keywords: | reclaimed asphalt pavement(RAP) effective asphalt asphalt film thickness surface area coefficient method |
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