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| 混凝土界面过渡区不均匀特性研究 | |
| 引用本文： | 陈露一,郑志河,邵慧权,范鹏云. 混凝土界面过渡区不均匀特性研究[J]. 武汉理工大学学报, 2007, 29(9): 111-114 |
| 作者姓名： | 陈露一 郑志河 邵慧权 范鹏云 |
| 作者单位： | 1. 武汉理工大学硅酸盐材料工程教育部重点实验室,武汉,430070 2. 内蒙古赤峰市克什克腾旗公路管理工区,赤峰,024000 3. 内蒙古通辽市交通规划设计院,通辽,028000 4. 内蒙古赤峰市公路工程质量监督站,赤峰,024000 |
| 摘 要： | 在新拌混凝土制备过程中,因混凝土内部的微泌水效应和宏观泌水作用会对处于不同位置的骨料周围区域内产生水分的不均匀分布,进而影响界面过渡区的均匀性。利用显微硬度测试技术研究了混凝土界面过渡区的不均匀特性。结果表明,单骨料上、下以及侧面等不同界面处显微硬度值存在较大差别,其中上界面显微硬度值最大。表层骨料周围界面过渡区宽度略大于内部骨料界面过渡区;硅灰的掺加能明显改善混凝土界面过渡区的不均匀性。 |
| 关 键 词： | 界面过渡区 不均匀性 显微硬度 硅灰 |
| 文章编号： | 1671-4431（2007）09-0111-04 |
| 修稿时间： | 2007-06-20 |
Research on Asymmetry of Interfacial Transition Zone in Concrete |
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| CHEN Lu-yi,ZHENG Zhi-he,SHAO Hui-quan,FAN Peng-yun. Research on Asymmetry of Interfacial Transition Zone in Concrete[J]. Journal of Wuhan University of Technology, 2007, 29(9): 111-114 | |
| Authors: | CHEN Lu-yi ZHENG Zhi-he SHAO Hui-quan FAN Peng-yun |
| Affiliation: | 1. Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education, Wuhan University of Technology, Wuhan 430070, China; 2. Chifeng Keshiketengqi Highway Management Work Area of Inner Mongolia, Chifeng 024000, China; 3. Tongliao Traffic Planning and Design Institute of Inner Mongolia, Tongliao 028000, China;4. Chifeng Highway Engineering Quality Supervising Station of Inner Mongolia, Chifeng 024000, China |
| Abstract: | In the preparation process of fresh concrete,there is an uneven water distribution develops around the aggregate particles.The micro-bleeding and macro-bleeding during casting,can influences the symmetry of the interfacial transition zone(ITZ).This paper presented the asymmetry of the ITZ by means of the microhardness testing.The results showed that there was a distinguished difference for the microhardness of the top,bottom and profile of a single aggregate,and the top face microhardness was the biggest.The ITZ of aggregate located in the near-surface region is a little wider then that of aggregate in internal concrete.The silica fume can obviously avoid the asymmetry of the ITZ. |
| Keywords: | interfacial transition zone(ITZ) asymmetry microhardness silica fume |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |