| 大掺量矿渣微粉提高混凝土抗氯离子渗透性的研究 |
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| 引用本文： | 谢祥明,莫海鸿.大掺量矿渣微粉提高混凝土抗氯离子渗透性的研究[J].水利学报,2005,36(6):0737-0740. |
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| 作者姓名： | 谢祥明 莫海鸿 |
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| 作者单位： | 1. 广东水电二局股份有限公司,广东,增城,511340;华南理工大学,建筑学院,广东,广州,510641
2. 华南理工大学,建筑学院,广东,广州,510641 |
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| 摘 要： | 本文首先对矿渣微粉提高混凝土抗氯离子渗透性的物理化学机理进行了分析，采用ASTMC1202导电量法与显色法相结合，对大掺量磨细矿粉混凝土内氯离子的渗透特性进行了试验研究，发现磨细矿粉是混凝土水化密实和固化氯离子的物质基础。研究表明，大掺量磨细矿粉混凝土内氯离子渗透性比普通混凝土大约低5倍，能有效遏止氯离子对钢筋的电化学腐蚀，可以成倍地延缓钢筋锈蚀的时间，从而有效抗海水腐蚀。
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| 关 键 词： | 大掺量磨细矿粉 氯离子 渗透性 |
| 文章编号： | 0559-9350(2005)06-0737-04 |
| 修稿时间： | 2004年5月8日 |
Experimental study on improving resistance to chloride ion osmosis of concrete by means of adding large amount of fine slag powder |
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| XIE Xiang-ming,MO Hai-hong.Experimental study on improving resistance to chloride ion osmosis of concrete by means of adding large amount of fine slag powder[J].Journal of Hydraulic Engineering,2005,36(6):0737-0740. |
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| Authors: | XIE Xiang-ming MO Hai-hong |
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| Affiliation: | 1. Limited Share Company of Second Bureau of Water Conservancy and Hydropower Engineering, Guangdong Province, Guangzhou 511340, China; 2. South China University of Technology, Guangzhou 510641, China |
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| Abstract: | The combination of electric conduction method in compliance with code ASTM C1202 and color displaying method was applied to investigate the effect of fine slag powders on chloride ion osmosis resistance of concrete. It is found that the slag powders exhibit the role of small aggregate, improve the pore structure of concrete, adsorb the chloride ions, change the structure of interface between mortars and aggregates and reduce the linkages among the hydration products of cement. By adding large amount of fine slag powders the chloride ion osmosis resistance of concrete can be elevated by five times and at the same time the corrosion of steel bars can be effectively suppressed. |
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| Keywords: | fine slag powder large amount mixing chloride ion osmosis resistance |
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