干湿-温度双循环作用下氯离子在混凝土中的传输性能研究

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发布时间：2020-01-06 00:00:00

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干湿-温度双循环作用下氯离子在混凝土中的传输性能研究

Study on Transport Properties of Chloride Ion in Concrete under the Action of Dry-wet Cycle and Temperature Cycle

２０19年第2期

混凝土；氯离子扩散系数；干湿循环；温度循环；水灰比

Concrete; Chloride diffusion coefficient; Dry-wet cycle; Temperature cycle; W/C

２０19年第2期

10.19761/j.1000-4637.2019.02.006.04

国家自然科学基金项目（51879236）

王晋宝，许盛龙，田美灵，李强，王亚军

浙江海洋大学港航与交通运输工程学院，舟山 316022

王晋宝，许盛龙，田美灵，李强，王亚军

王晋宝,许盛龙,田美灵,等.干湿-温度双循环作用下氯离子在混凝土中的传输性能研究[J].混凝土与水泥制品,2019(2):6-9.

WANG J B,XU S L,TIAN M L,et al.Study on Transport Pr operties of C hloride Ion in Concrete under the Action of Dry-wet Cycle and Temperature Cycle[J].China Concrete and Cement Products,2019(2):6-9.

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摘要：采用自然扩散法研究了混凝土在海洋环境中的氯离子扩散行为，探讨了水灰比、温度、干湿循环和温度循环对混凝土氯离子扩散性能的影响。试验模拟了干湿循环和昼夜温差循环作用对不同水灰比混凝土中氯离子传输的影响。结果表明，浪溅区混凝土要比水下区混凝土中氯离子扩散得更快，且温度循环对氯离子扩散有一定的影响，在实际工程中不能忽视昼夜温度循环对氯离子扩散系数的影响。 Abstract: The diffusion behavior of chloride ion in concrete under the marine circumstance was studied by natural diffusion method. And the effect of W/C, temperature, dry-wet cycle and temperature cycle on the diffusion property of chloride ion in concrete was discussed. The effects of dry-wet cycle and diurnal temperature difference on chloride transport in concrete with different W/C were simulated in laboratory. The experimental results show that the chloride diffusion of concrete in the splash area is faster than that in the underwater area. Temperature cycle has a certain influence on the diffusion of chloride ion. Therefore, the effect of diurnal temperature cycle on the chloride diffusion coefficient can not be ignored in practical engineering.

英文名 : Study on Transport Properties of Chloride Ion in Concrete under the Action of Dry-wet Cycle and Temperature Cycle

刊期 : ２０19年第2期

关键词 : 混凝土；氯离子扩散系数；干湿循环；温度循环；水灰比

Key words : Concrete; Chloride diffusion coefficient; Dry-wet cycle; Temperature cycle; W/C

刊期 : ２０19年第2期

DOI : 10.19761/j.1000-4637.2019.02.006.04

文章编号 :

基金项目 : 国家自然科学基金项目（51879236）

作者 : 王晋宝，许盛龙，田美灵，李强，王亚军

单位 : 浙江海洋大学港航与交通运输工程学院，舟山 316022

王晋宝，许盛龙，田美灵，李强，王亚军

王晋宝,许盛龙,田美灵,等.干湿-温度双循环作用下氯离子在混凝土中的传输性能研究[J].混凝土与水泥制品,2019(2):6-9.

WANG J B,XU S L,TIAN M L,et al.Study on Transport Pr operties of C hloride Ion in Concrete under the Action of Dry-wet Cycle and Temperature Cycle[J].China Concrete and Cement Products,2019(2):6-9.

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摘要

参数

结论

参考文献

引用本文

摘要：采用自然扩散法研究了混凝土在海洋环境中的氯离子扩散行为，探讨了水灰比、温度、干湿循环和温度循环对混凝土氯离子扩散性能的影响。试验模拟了干湿循环和昼夜温差循环作用对不同水灰比混凝土中氯离子传输的影响。结果表明，浪溅区混凝土要比水下区混凝土中氯离子扩散得更快，且温度循环对氯离子扩散有一定的影响，在实际工程中不能忽视昼夜温度循环对氯离子扩散系数的影响。

Abstract: The diffusion behavior of chloride ion in concrete under the marine circumstance was studied by natural diffusion method. And the effect of W/C, temperature, dry-wet cycle and temperature cycle on the diffusion property of chloride ion in concrete was discussed. The effects of dry-wet cycle and diurnal temperature difference on chloride transport in concrete with different W/C were simulated in laboratory. The experimental results show that the chloride diffusion of concrete in the splash area is faster than that in the underwater area. Temperature cycle has a certain influence on the diffusion of chloride ion. Therefore, the effect of diurnal temperature cycle on the chloride diffusion coefficient can not be ignored in practical engineering.

关键词:

混凝土；氯离子扩散系数；干湿循环；温度循环；水灰比

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[2] 李崇智,章超,肖维录,等.复合液体抗腐蚀剂对海洋混凝土性能的影响研究[J].混凝土与水泥制品,2018(11):1-5.

[3] Shi XianMing,Xie Ning,Keith Fortune,et al.Durability of steel reinforced concrete in chloride environments: Anover - view[J].Constr Build Mater,2012,30(5):125.

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[5] Boddy A, Bentz E, Thomas M D, et al. An overview and sensitivity study of a multimechanistic chloride transport model[J].Cement and Concrete Research, 1999, 29(6): 827- 837.

[6] Matsumura T, Shirai K, Saegusa T. Verification Method for Durability of Reinforced Concrete Structures Subjected to Salt Attack Under High Temperature Conditions[J]. Nuclear Engineering and Design,2008,238(5):1181-1188.

[7] Mangat P S,Limbachiya M C.Effect of initial curing on chloride diffusion in concrete repair materials [J].Cement and Concrete Research,1999,29(9):1475-1485.

[8] Perez B M, Zibara H, Hooton R D, et al. A study of the effect of chloride binding on service life predictions[J]. Cement and Concrete Research,2000,30(8):1215-1223.

[9] 金伟良,延永东,王海龙.氯离子在受荷混凝土内的传输研究进展[J].硅酸盐学报,2010,38(10):2217-2224.

[10] Weiliang Jin,,Hailong Wang,et al.Effect External Loads On Chloride Transport in Concrete[J].Journal of Materials In Civil Engineering,2011,23:1043-1049.

[11] 李长贺.干湿交替下氯离子在混凝土中传输机理及模型研究[D].郑州:郑州大学,2015.

[12] 金伟良.非饱和状态下氯离子在混凝土中的渗透机理及计算模型[J].硅酸盐学报,2008,36(10):1362-1369.

[13] 林刚,刘应华.干湿交替下混凝土氯离子运输模拟[J].武汉工业学院学报,2009,28(3):68-71．

[14] 关鹏.干湿循环下混凝土氯离子传输模型研究[J].混凝土,2012(11):7-11．

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干湿-温度双循环作用下氯离子在混凝土中的传输性能研究

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