Thickness Testing of Effective Asphalt Film in RAP

doi:10.3969/j.issn.1674-0696.2012.06.13

Journal of Chongqing Jiaotong University(Natural Science) ›› 2012, Vol. 31 ›› Issue (6): 1149-1153.DOI: 10.3969/j.issn.1674-0696.2012.06.13

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Thickness Testing of Effective Asphalt Film in RAP

Cheng Zhiqiang¹，Chen Xianyong²，Chen Huiqiang¹，Hou Jun²，Xu Dongliang²

1. School of Civil Engineering ＆ Architecture，Chongqing Jiaotong University，Chongqing 400074，China; 2. Chongqing ZONJO Recycling Development Co. ，Ltd. ，Chongqing 400060，China)

Received:2012-04-11 Revised:2012-05-22 Online:2012-12-15 Published:2014-10-31

RAP 中有效沥青膜厚度测定

成志强¹，陈先勇²，陈辉强¹，侯俊²，徐栋良²

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

作者简介:成志强(1988—)，男，山西交城人，硕士研究生，主要从事路面材料的研究。E-mail:915438766@qq.com。
基金资助:
重庆交通大学研究生教育创新基金项目( 20120121) ; 重庆市博士后基金资助项目( 渝xm201102010)

Abstract

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;inally，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．

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． 889 μm，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。

关键词: 旧沥青混合料, 有效沥青, 沥青膜厚度, 表面积系数法

CLC Number:

U418

Cheng Zhiqiang，Chen Xianyong，Chen Huiqiang1，Hou Jun，Xu Dongliang. Thickness Testing of Effective Asphalt Film in RAP[J]. Journal of Chongqing Jiaotong University(Natural Science), 2012, 31(6): 1149-1153.

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.

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Thickness Testing of Effective Asphalt Film in RAP

RAP 中有效沥青膜厚度测定

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