| 混凝土内钢绞线的蚀坑形状及分布特征 |
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| 引用本文： | 王旭光,李翠. 混凝土内钢绞线的蚀坑形状及分布特征[J]. 徐州工程学院学报, 2010, 0(2): 37-44 |
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| 作者姓名： | 王旭光 李翠 |
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| 作者单位： | [1]中国矿业大学力学与建筑工程学院,江苏徐州221008 [2]大连理工大学建设工程学部,辽宁大连116024 |
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| 基金项目： | 国家自然科学基金资助项目（50878207） |
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| 摘 要： | 为研究预应力钢筋的锈蚀特性，在自然气候条件下，采用内掺盐的方式，进行了混凝土内钢绞线的锈蚀实验．实验结果表明：钢绞线的蚀坑形状可抽象为2种典型形状，即椭球形和马鞍形；随着锈蚀率增大，蚀坑总个数增大，椭球形蚀坑出现的概率呈先增后减趋势；马鞍形蚀坑出现概率呈先减后增趋势，但变化幅度都不大；蚀坑的长度、宽度、深度都较好地呈对数正态分布．
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| 关 键 词： | 氯盐环境 混凝土 钢绞线 锈蚀 坑蚀 |
Configuration and Distributional Characteristics of Pits on Steel Strand in Concrete |
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| WANG Xu-guang,LI Cui. Configuration and Distributional Characteristics of Pits on Steel Strand in Concrete[J]. Journal of Xuzhou Istitute of Technology, 2010, 0(2): 37-44 |
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| Authors: | WANG Xu-guang LI Cui |
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| Affiliation: | 1 School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221008, China ; 2. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China) |
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| Abstract: | In this paper, corrosion experiment on steel strand in concrete is carried out under natural weather condition on specimens mixed with salt. Some findings are as follows ： configuration of pits on steel strand can be concluded in two typical configurations, that is ellipsoid and saddle; With the increasing of corrosion rate,the sum of pits increases, the appearance probability of ellipsoid pits shows a tendency of increasing at first and then decreasing, and the appearance probability of ellipsoid pits shows a tendency of decreasing at first and then increasing. Length, width and depth distribution of pits conforms to lognormal distribution well. |
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| Keywords: | chloride environment concrete steel strand corrosion pitting corrosion |
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