干湿循环作用下氯离子在混凝土中的侵蚀过程分析

姬永生; 袁迎曙

doi:10.13204/j.gyjz200612005

干湿循环作用下氯离子在混凝土中的侵蚀过程分析

doi: 10.13204/j.gyjz200612005

1.
中国矿业大学建工学院徐州 221008

基金项目:

国家自然科学基金资助项目资助(编号:50078054、50478100)

详细信息

作者简介:
姬永生,男,1978年7月出生,讲师,博士研究生,E-mail:jysbh@126.com

中图分类号: TU528.0
计量
- 文章访问数: 105
- HTML全文浏览量: 12
- PDF下载量: 208
- 被引次数: 0
出版历程
- 收稿日期: 2006-05-15
- 刊出日期: 2006-12-20

TRANSPORT PROCESS OF CHLORIDE IN CONCRETE UNDER WET AND DRY CYCLES

1.
School of Architecture &Civil Engineering,China University of Mining and Technology Xuzhou 221008

摘要

摘要: 干湿循环和氯盐浸泡对比试验表明,在干湿循环作用下,氯离子在混凝土中的传输速度远大于饱水混凝土内外氯离子浓差引起的离子扩散速度,氯离子在上部非饱水混凝土中和在饱水混凝土中的传输机理不同。对上部非饱水混凝土中氯离子的渗透行为进行了机理分析,并建立了干湿循环作用下氯离子传输速度模型,可为准确地预测实际工况混凝土结构的使用寿命提供参考。
- 干湿循环 /
- 氯盐浸泡 /
- 传输速度 /
- 非饱水混凝土
Abstract: The research shows that the rate of chloride transport in concrete under wet and dry cycles is rapider than that in saturated concrete.This means the mechanism of chloride transport process is different in different environments.The mechanism of chloride transport process under wet and dry cycles is studied and a chloride transport model is developed which provides a reference for predicting accurately the service life of an actual concrete structure.
- wet and dry cycles /
- immersed in NaCl solution /
- transport rate /
- unsaturated concrete

HTML全文

参考文献(10)

洪定海.混凝土中钢筋的腐蚀与保护.北京:中国铁道出版社,1998

[2] 金伟良,赵羽习.混凝土结构耐久性.北京:科学出版社,2002

[3] 施养杭,罗刚.含多种因素的氯离子侵入混凝土的有限差分计算模型.工业建筑,2004(5)

[4] Lars-Olof Nilsson.A Numerical Model for Combined Diffusion and Convection of Chloride in Non-saturated Concrete:[Doctoral Thesis].Sweden:Department of Building Materials,Chalmers University of Technology,1996

[5] 冯乃谦.耐久100年以上的高性能混凝土.混凝土与水泥制品,1998(8)

[6] 石元春,李韵珠,陆锦文.盐渍土的水盐运动.北京:北京农业大学出版社,1986

[7] Erik P Nielsena,Mette R Geiker B.Chloride Diffusion in Partially Saturated Cementitious Material.Cement and Concrete Research,2003,33:133-138

[8] Hong K,Hooton R D.Effects of Cyclic Chloride Exposure on Penetration of Concrete Cover.Cement and Concrete Research,1999,29:1379-1386

[9] Jung S Kong,Ayman N Ababneh,Dan M Frangopol,et al.Reliability Analysis of Chloride Penetration in Saturated Concrete.Probabilistic Engineering Mechanics,2002,17:305-315

[10] Rob B Polder,Willy H A Peelen.Characterisation of Chloride Transport And Reinforcement Corrosion in Concrete Under Cyclic Wetting and Drying by Electrical Resistivity.Cement Concrete Composites,2002,24:427-435

施引文献

资源附件(0)

访问统计