海洋环境下混凝土中氯离子的扩散系数
Effective Diffusion Coefficient of Chloride Ion in Concrete in Marine Environment
摘 要
在我国海洋腐蚀条件最为恶劣的海南八所港,对6种配合比的混凝土试件进行实海暴露试验,研究了浪溅区条件下氯离子在混凝土中侵入量以及氯离子有效扩散系数随时间的演变,以可靠评价混凝土材料的耐腐蚀性能,并为准确预测混凝土结构的使用寿命提供参考.
氯离子渗透
有效扩散系数
marine exposure
chloride ion penetration
effective diffusion coefficient
Abstract
The marine exposure tests of concrete specimens were performed in Basuo Port,Hainan,in the worst marine corrosion environment in China.The time dependence of penetration content and effective diffusion coefficient of chloride ions in concrete under splash zone condition were investigated,which may be used to evaluate the durability of concrete materials and to serve as a reference for predicting the service life of concrete structures.
中图分类号 TU528.33
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(58971067)；"九五"国家重点科技攻关项目(96-415-04-01)
收稿日期 2009/9/1
修改稿日期 2009/9/11
网络出版日期
作者单位点击查看
联系人作者朱雅仙(zhuyx@nhri.cn)
备注朱雅仙,教授级高工.
引用该论文: ZHU Ya-xian,CAI Wei-cheng,LI Yan,LI Sen-lin,WU Ye,HONG Ding-hai. Effective Diffusion Coefficient of Chloride Ion in Concrete in Marine Environment[J]. Corrosion & Protection, 2010, 31(8): 587～590
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参考文献
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【3】余红发,孙伟.混凝土在多重因素作用下的氯离子扩散方程[J].建筑材料学报,2002,5(3):240-247．
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【7】Kassir M K,Ghosn M.Chloride-induced corrosion of reinforced of reinforced concrete bridge decks[J].Cement and Concrete Research,2002,32(1):139-143.
【8】余红发,孙 伟,麻海燕,等.混凝土使用寿命预测方法的研究Ⅲ-混凝土使用寿命的影响因素及混凝土寿命评价[J].硅酸盐学报,2002,30(6):696-701.
【9】Mejlbro L.The complete solution of Fick′s second law of diffusion with time-dependent diffusion coefficient and surface concentration[C]//Proceedings Durability of concrete in saline environment,Danderyd Sweden:Cement AB,1996:127-158.
【10】Thomas M D A,Matthews J D.Chloride penetration and reinforcement corrosion in fly ash concrete exposed to a marine environment[C]//ACI SP163-15,Performance of Concrete in the Marine Environment,1996.
【11】Amforth P B B.The derivation of input data for modelling chloride ingress from eight-year UK coastal exposure trials[J].Magazine of Concrete Research,1999,51(2):87-96.
【12】Paul Sandberg,Karin Pettersson,Oddny Jorgensen.Field studies of chloride transport into high-performance concrete[C]//ACI SP163-11,Performance of Concrete in the Marine Environment,1996.
【13】Mangat P S,Molloy B T.Prediction of long term chloride concentration in concrete[J].Materials and Structures,1994,27:338-346.
【2】Dhir R K,Jones M R,Ng S L D.Prediction of total chloride content profile and concentration/time-dependent diffusion coefficient for concrete[J].Magazine of Concrete Research,1998(1):37-48．
【3】余红发,孙伟.混凝土在多重因素作用下的氯离子扩散方程[J].建筑材料学报,2002,5(3):240-247．
【4】Mehta P K.Concrete durability-fifty year′s progress[C]//Proc of 2nd Inter Conf on Concrete Durability,ACI SP 126-1,1991:1-31.
【5】Collepardi M,Marcialis A,Turrizzani R.The kinetics of penetration of chloride ions into the concrete[J].Cem,1970(4):157-164.
【6】Thomas M D A,Bamforth P B.Modeling chloride diffusion in concrete-effect of fly ash and slag[J].Cement and Concrete Research,1999,29(4):487-495.
【7】Kassir M K,Ghosn M.Chloride-induced corrosion of reinforced of reinforced concrete bridge decks[J].Cement and Concrete Research,2002,32(1):139-143.
【8】余红发,孙 伟,麻海燕,等.混凝土使用寿命预测方法的研究Ⅲ-混凝土使用寿命的影响因素及混凝土寿命评价[J].硅酸盐学报,2002,30(6):696-701.
【9】Mejlbro L.The complete solution of Fick′s second law of diffusion with time-dependent diffusion coefficient and surface concentration[C]//Proceedings Durability of concrete in saline environment,Danderyd Sweden:Cement AB,1996:127-158.
【10】Thomas M D A,Matthews J D.Chloride penetration and reinforcement corrosion in fly ash concrete exposed to a marine environment[C]//ACI SP163-15,Performance of Concrete in the Marine Environment,1996.
【11】Amforth P B B.The derivation of input data for modelling chloride ingress from eight-year UK coastal exposure trials[J].Magazine of Concrete Research,1999,51(2):87-96.
【12】Paul Sandberg,Karin Pettersson,Oddny Jorgensen.Field studies of chloride transport into high-performance concrete[C]//ACI SP163-11,Performance of Concrete in the Marine Environment,1996.
【13】Mangat P S,Molloy B T.Prediction of long term chloride concentration in concrete[J].Materials and Structures,1994,27:338-346.
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