| 氯盐腐蚀钢绞线蚀坑几何尺寸的分布特征 |
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| 引用本文： | 李富民,袁迎曙.氯盐腐蚀钢绞线蚀坑几何尺寸的分布特征[J].煤炭学报,2011,36(11):1826-1831. |
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| 作者姓名： | 李富民 袁迎曙 |
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| 作者单位： | 1.中国矿业大学 深部岩土力学与地下工程国家重点实验室,江苏 徐州 221008;
2.华南理工大学 亚热带建筑科学国家重点实验室,广东 广州 510640 |
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| 基金项目： | 国家自然科学基金资助项目(51178454); 江苏省自然科学基金资助项目(BK2011222); 华南理工大学亚热带建筑科学国家重点实验室开放基金资助项目(2010KB03) |
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| 摘 要： | 从氯盐腐蚀预应力混凝土梁试件中获取腐蚀钢绞线试样,观察并抽象了蚀坑的几何形状;然后,从其中截取4段不同腐蚀率的钢绞线试样进行蚀坑宽度、深度及长度的量取和统计,研究了蚀坑几何尺寸的分布特征。结果表明：钢绞线钢丝的蚀坑几何形状可抽象为椭球形和马鞍形2种典型形状;随腐蚀率的增大,蚀坑密度总体上有所增大;坑宽近似服从正态分布,...
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| 关 键 词： | 钢绞线腐蚀 蚀坑形状 分布特征 预应力结构 耐久性 |
| 收稿时间： | 2011-01-18 |
Distributing character of size of pits on steel strands corroded by chloride |
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| LI Fu-min,YUAN Ying-shu.Distributing character of size of pits on steel strands corroded by chloride[J].Journal of China Coal Society,2011,36(11):1826-1831. |
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| Authors: | LI Fu-min YUAN Ying-shu |
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| Affiliation: | LI Fu-min1,2,YUAN Ying-shu1(1.State Key Laboratory for Geomechanics and Deep Undergound Engineering,China University of Mining and Technology,Xuzhou 221008,China,2.State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | With the corroded steel strands from some prestressed concrete beams contaminated with salt,the configuration of the pits were studied.And then,4 samples of corroded steel strands with different corrosion rates were obtained,and the width,depth and length of the pits were measured and accounted,and the distributing character of pits size were studied.The results show that the configuration of the pits include 2 typical modes such as spheroidicity and saddle.With the developing of corrosion,the pits become d... |
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| Keywords: | corrosion of steel strands pits configuration distribution character prestressed structures durability |
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