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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2008, Vol. 27 ›› Issue (5): 709-711,821.

• • 上一篇    下一篇

再生水泥混凝土界面过渡区的结构特性分析

魏鸿1, 凌天清2, 卿明建3, 吴春波2   

  1. 1. 同济大学 交通运输工程学院, 上海 201804;
    2. 重庆交通大学 土木建筑学院, 重庆 400074;
    3. 重庆市政设施管理局, 重庆 400015
  • 收稿日期:2007-09-07 修回日期:2008-02-22 出版日期:2008-10-20 发布日期:2016-11-07
  • 作者简介:魏鸿(1981-),男,四川广安人,博士研究生,从事道路工程研究。E-mail:whcq12@tom.com。

Analysis on the Structural Characteristics of ITZ of Recycled Concrete

WEI Hong1, LING Tian-qing2, QING Ming-jian3, WU Chun-bo2   

  1. 1. School of Traffic & Transportation Engineering, Tongji University, Shanghai 201804, China;
    2. School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing 400074, China;
    3. Chongqing Municipal Facilities Administration Bureau, Chongqing 400015, China
  • Received:2007-09-07 Revised:2008-02-22 Online:2008-10-20 Published:2016-11-07

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摘要： 借助于扫描电镜和电子能谱仪,对再生水泥混凝土的微观形貌和结构进行了观察,分析了再生水泥混凝土内部各种界面的结构特性以及Ca、Si等元素在界面过渡区的分布特征。结果表明:再生水泥混凝土内部由多种界面结构组成,各界面过渡区的厚度差异较大。界面过渡区内外的元素分布规律存在着较大的差异,Ca、Si等元素在界面过渡区内出现了一定程度的聚集,在界面过渡区外的分布则较为连续。

关键词: 再生水泥混凝土, 界面过渡区, 微观结构特性, 元素分布

Abstract: Based on the observation of SEM and EDXA technologies,the investigation on the micro-structural properties and the elements distributional characteristics of Interfacial Transition Zone (ITZ)of recycled concrete is conducted.The observation results show that the recycled concrete consists of various interfacial structures and the ITZ depth is greatly different from each other.Further studies indicate that the distribution of elements of the ITZ is seriously different in other areas;Ca,Si,and et al elements have partially gathered in the ITZ but continually distribute in the other areas.

Key words: recycled concrete, Interfacial Transition Zone (ITZ), micro-structural properties, elements distribution

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