含多种因素的氯离子侵入混凝土的有限差分计算模型

施养杭; 罗刚

doi:10.13204/j.gyjz200405003

含多种因素的氯离子侵入混凝土的有限差分计算模型

doi: 10.13204/j.gyjz200405003

施养杭,
罗刚

1.
华侨大学土木工程系泉州 362011

基金项目:

国家自然科学基金资助项目(编号:59979018);建设部国家混凝土规范第六批科研课题项目

详细信息

作者简介:
施养杭男 1961年12月出生副教授

中图分类号: TU528
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- 被引次数: 0
出版历程
- 收稿日期: 2003-10-10
- 刊出日期: 2004-05-20

A FINITE DIFFERENCE CALCULATING MODEL OF CHLORIDE PENETRATING INTO CONCRETE UNDER VARIOUS FACTORS

1.
Dept.of Civil Eng.,Huaqiao Univ. Quanzhou 362011

摘要

摘要: 针对氯离子侵入混凝土的主要途径和来源，阐明氯离子侵入混凝土的机理，分析氯离子侵入混凝土的现有计算模型的类型及其局限性，综合考虑水泥品种、温度、湿度和时间等因素对氯离子扩散系数的影响，建立了基于有限差分法的氯离子侵入混凝土的计算模型。该模型较好地反映了实际情况，具有一定的理论和应用价值。
- 氯离子 /
- 侵蚀混凝土 /
- 计算模型 /
- 扩散系数 /
- 有限差分法
Abstract: According to the primary channels and source of chloride penetrating into concrete, the mechanism is expounded.The kinds and their limitations of the existing calculating models are analyzed.After taking account of the effects on chloride diffusion coefficient of cement kind, mixed ratio, temperature, relative humidity and time, a calculating model of chloride penetrating into concrete based on finite difference is established.The model is better to reflect the actual situation, which has proper theoretical and practical value.
- chloride /
- erosion of concrete /
- calculating model /
- diffusion coefficient /
- finite difference

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参考文献(8)

王铁成,郭小强,阎西康.海水侵蚀环境下混凝土结构耐久性的研究.东南大学学报(自然科学版),2002,32(增刊):251～253

[2] 金伟良,赵羽习.混凝土结构耐久性.北京:科学出版社,2002.10～30

[3] Nillson L O. A Numerical Model for Combined Diffusion and Convection of Chloride in Non Saturated Concrete.Sweden:Department of Building Materials,Chalmers University of Technology,1996

[4] Saetta Anna V,Scotta Roberto V. Analysis of Chloride Diffusion into Partially Saturated Concrete.ACI Materials Journal,1993(5):441～451

[5] Maekawa,Ishiea K.Service Life Evaluation of Reinforced Concrete under Coupled Forces and Environmental Actions.In:International Conference on Ion and Mass Transport in Cement Based Materials.Toronto:1999

[6] Amey S L,Johnson D A,Miltenberger M A,et al.Predicting the Service of Concrete Marine Structures,An Environmental Methodology.ACI Structural Journal,1998,95(2):205～214

[7] Thomas M D A,Bamforth P B.Modeling Chloride Diffusion in Concrete;Effect of Fly Ash and Slag.Cement and Concrete Research,1999,29:487～495

[8] Steinar Helland.Assessment and Prediction of Service Life for Marine Structures--A Tool for Performance Based Requirement?In:2nd Dura Net Workshop CEN TC-104 Design of Durability of Concrete.Berlin:1999

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