[1]耿欧,袁迎曙,蒋建华,等.混凝土中钢筋锈蚀速率的时变模型[J].东南大学学报(自然科学版),2010,40(6):1293-1297.[doi:10.3969/j.issn.1001-0505.2010.06.031]
 Geng Ou,Yuan Yingshu,Jiang Jianhua,et al.Time-varying model of steel corrosion in concrete[J].Journal of Southeast University (Natural Science Edition),2010,40(6):1293-1297.[doi:10.3969/j.issn.1001-0505.2010.06.031]
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混凝土中钢筋锈蚀速率的时变模型()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第6期
页码:
1293-1297
栏目:
材料科学与工程
出版日期:
2010-11-20

文章信息/Info

Title:
Time-varying model of steel corrosion in concrete
作者:
耿欧12 袁迎曙12 蒋建华2 鲁彩凤2 张风杰2
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,徐州 221116; 2 中国矿业大学力学与建筑工程学院, 徐州 221116
Author(s):
Geng Ou12 Yuan Yingshu12 Jiang Jianhua2 Lu Caifeng2 Zhang Fengjie2
1 State Key Laboratory for Geomechanics and Deep Undergound Engineering, China University of Mining and Technology, Xuzhou 221116, China
2 School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China
关键词:
钢筋锈蚀 锈蚀层 时变模型 混凝土耐久性
Keywords:
steel corrosion corrosion layer time-varying model concrete durability
分类号:
TU528.01
DOI:
10.3969/j.issn.1001-0505.2010.06.031
摘要:
为确定混凝土中钢筋锈蚀速率随时间的变化规律,根据法拉第定律建立了钢筋锈蚀产物随时间的变化关系,在此基础上分析了钢筋锈蚀产物对混凝土孔隙率及混凝土氧气扩散性能的影响关系; 建立了混凝土中钢筋锈蚀速率的时变模型.在恒温恒湿条件下,对钢筋锈蚀速率随时间的变化关系进行试验研究.试验结果表明:在其他因素不变的情况下,混凝土中钢筋锈蚀速率随时间的增长而逐渐降低,直至混凝土保护层开裂; 时变模型所计算的钢筋锈蚀速率随时间的总体变化规律和试验结果所测试的总体规律基本一致,模型可以用来预测钢筋锈蚀速率随时间的变化规律.
Abstract:
To determine the variation of steel corrosion rate over time in concrete, the relationship between steel corrosion products and corrosion time is established according to the Faraday’s law. The influence of steel corrosion products on the concrete porosity and oxygen diffusion properties of concrete has also been analyzed. On this basis, the time-varying model of the corrosion rate of reinforcing steel in concrete is set up. Under constant temperature and humidity conditions, the experiment was done in order to determine the relation between the steel corrosion rate and time. Experiment result shows that the steel corrosion rate gradually decreases with the corrosion time until the protective layer of concrete cracking. The results calculated by time-varying model are basically in agreement with the experiment result, so the model can be used to predict the steel corrosion rate in respect of time.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 耿欧(1973—),男,博士,副教授,ougeng@cumt.edu.cn.
基金项目: 国家自然科学基金资助项目(50808173,50878207)、中国矿业大学科技基金资助项目(2007B004).
引文格式: 耿欧,袁迎曙,蒋建华,等.混凝土中钢筋锈蚀速率的时变模型[J].东南大学学报:自然科学版,2010,40(6):1293-1297. [doi:10.3969/j.issn.1001-0505.2010.06.031]
更新日期/Last Update: 2010-11-20