中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2016, Vol. 35 ›› Issue (4): 35-39.DOI: 10.3969/j.issn.1674-0696.2016.04.08

• 道路与铁道工程 • 上一篇    下一篇

活性橡胶沥青胶结料微观结构分析

朱浩然1,2,蔡海泉1,2,李峰1,2,严金海1,2   

  1. (1.苏交科集团股份有限公司,江苏 南京 211112;2.新型道路材料国家工程实验室,江苏,南京211112)
  • 收稿日期:2015-03-13 修回日期:2015-06-26 出版日期:2016-08-20 发布日期:2016-08-20
  • 作者简介:第一作者:朱浩然(1984—),男,江苏泗洪人,高级工程师,博士,主要从事沥青路面结构与材料研究方面的工作。E-mail:ldndxzhr@163.com。
  • 基金资助:
    江苏省交通科学研究计划项目 (2013Y21,2014-4-1-11);江苏省自然科学基金项目(BK2014111);交通运输部应用基础研究项目(2014319775130);江苏省自然科学基金(青年基金)项目(BK20150074)

Microstructure Analysis of the Reacted and Activated Rubber Asphalt Binder

ZHU Haoran1,2,CAI Haiquan1,2,LI Feng1,2,YAN Jinhai1,2   

  1. (1. Jiangsu Transportation Institute Co., Ltd., Nanjing 211112, Jiangsu,P.R.China;2. National Engineering Laboratory for Advanced Road Materials, Nanjing 211112, Jiangsu ,P.R.China)
  • Received:2015-03-13 Revised:2015-06-26 Online:2016-08-20 Published:2016-08-20

摘要: 通过差示扫描量热分析(DSC)、扫描电镜(SEM)、四组分分析以及红外光谱(IR)等相关专项微观试验,从微观角度对活性橡胶在沥青胶结料的相容性、分布状况、成分组成、分子结构等微观结构及组成进行分析,并结合沥青胶结料常规性能的变化规律,研究活性橡胶沥青胶结料的改性机理。研究结果表明:活性橡胶与普通道路石油沥青具有较好的相容性,形成了稳定、均匀的共混体系;活性橡胶的特有成分活性矿物通过高分子有机链条与橡胶颗粒连接,分散在沥青内部形成网状互联结构,从而能显著提高沥青胶结料的高温性能。

关键词: 道路工程, 反应型活性橡胶, 微观结构, 沥青胶结料, 改性机理

Abstract: The compatibility, the distribution, the ingredients, the molecular structure and the mechanism of the reacted and activated rubber(RAR) asphalt binder were studied and analyzed in detail, through such relevant special micro experiments as the differential scanning calorimetry(DSC), the scanning electron microscopy(SEM), four-component analysis and the infrared spectrum(IR) and the modification mechanism of RAR was studied in combination with the change regularity of regular performance of asphalt binder. The results show that the RAR is well compatible with common road matrix asphalt, thus forming a stable and uniform blend system, within which the active mineral, the particular ingredient of the RAR, linking with the rubber particles through organic polymer chain are distributed within asphalt, thus forming an interconnected network structure. This way, the RAR can significantly improve the high temperature performance of the asphalt binder.

Key words: highway engineering;reacted and activated rubber, microstructure, asphalt binder, modification mechanism

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