[1]元成方,牛荻涛,齐广政.干湿循环机制下碳化混凝土氯离子侵蚀试验研究[J].西安建筑科技大学学报:自然科学版,2012,44(03):339-344,375.[doi:10.15986/j.1006-7930.2012.03.006]
　YUAN Cheng-fang,NIU Di-tao,QI Guang-zheng.Experimental study on chloride penetration into concrete after carbonation under wet and dry cycle mechanism[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2012,44(03):339-344,375.[doi:10.15986/j.1006-7930.2012.03.006]
点击复制

干湿循环机制下碳化混凝土氯离子侵蚀试验研究()
分享到：

西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
44
期数:
2012年03期
页码:
339-344,375
栏目:
出版日期:
2012-06-30

文章信息/Info

Title:
Experimental study on chloride penetration into concrete after carbonation under wet and dry cycle mechanism
文章编号:
1006-7930(2012)03-0339-06
作者:
元成方; 牛荻涛; 齐广政
(西安建筑科技大学土木工程学院,陕西 西安 710055)
Author(s):
YUAN Cheng-fang;  NIU Di-tao;  QI Guang-zheng
(School of Civil Engineering Xian University of Architecture and Technology, Xian 710055, China)
关键词:
海工混凝土结构; 氯离子; 碳化; 干湿循环; 扩散系数; 微观结构
Keywords:
marine concrete structures;  chloride ion;  carbonation;  wet and dry cycle;  diffusivity coefficient;  microstruction
分类号:
TU528
DOI:
10.15986/j.1006-7930.2012.03.006
文献标志码:
A
摘要:
海工混凝土结构的水上区部分,长期受到氯离子侵蚀和碳化的双重作用,较之一般大气环境下的混凝土结构,这一区域的混凝土结构更易发生钢筋锈蚀.本文开展了干湿循环机制下碳化混凝土的氯离子侵蚀试验,通过分析氯离子浓度分布规律,扩散系数以及微观结构,深入研究混凝土碳化对氯离子扩散的影响.研究结果表明,碳化反应增加了混凝土内部自由氯离子的含量,减缓了氯离子浓度的衰减,对混凝土的抗氯离子侵蚀性能造成了不利影响.碳化后,低水胶比混凝土的氯离子扩散系数有所下降,而高水胶比混凝土的氯离子扩散系数显著增大.碳化反应对混凝土的微观结构有一定的劣化作用,将会加速有害介质的侵入.降低水胶比可显著提高混凝土的密实度,增强混凝土自身的抗氯离子侵蚀性能,同时可以减轻碳化反应对氯离子侵蚀的加剧
Abstract:
The part above the sea water of marine concrete structures will be subjected to chloride penetration and carbonation over a long period of time. Compared with the concrete structures in the general atmosphere, marine concrete structures are more susceptible to reinforcement corrosion. In this paper, experiment of chloride penetration into concrete after carbonation under wet and dry cycle mechanism was carried out. Effect of concrete carbonization on chloride diffusion was deeply studied through analysis of the distribution of chloride ions, chloride diffusivity coefficient and microstruction of the concrete. The results showed that free chloride ion content in concrete was enhanced after carbonation, the decay of chloride ion concentration was slowed down. After carbonation, chloride diffusivity coefficient of concrete with low water binder ratio was reduced, and chloride diffusivity coefficient of concrete with high water-binder ratio was increased apparently. And the microstruction of the concrete was deteriorated by carbonation. Both the density and chloride ion penetration resistance of concrete could be increased by reducing the water-binder ratio

参考文献/References:

[1] TUMIDAJSKI P J,CHAN G W.Effect of Sulfate and Carbon Dioxide on Chloride Diffusivity[J].Cement and Concrete Research,1996,26(4):551-556.
[2] CHINDAPRASIRT Prinya,RUKZON Sumrerng,SIRIVIVATNANON Vute.Effect of carbon dioxide on chloride penetration and chloride ion diffusion coefficient of blended Portland cement mortar[J].Construction and Building Materials,2008,22:1701-1707.
[3] PUATATSANANON W,SAOUMA V E.Nonlinear Coupling of Carbonation and Chloride Diffusion in Concrete[J].Journal of Materials in Civil Engineering,May/June,2005:264-275.
[4] Claisse.Peter A.,El-Sayad.Hanaa,Shaaban.Ibrahim G.Permeability and Pore Volume of Carbonated Concrete[J].ACI Materials Journal,1999,96(3):378-381.
[5] 郑永来,郑洁琼,张 梅.碳化程度对混凝土中氯离子扩散系数的影响[J].同济大学学报:自然科学版,2010,38(3):412-416.
ZHENG Yonglai,ZHENG Jieqiong,ZHANG Mei.Experimental Study on Effect of Concrete Carbonization Degrees on Chloride Diffusion Coefficient[J].Journal of tongji university:natural science,2010,38(3):412-416.
[6] 赵铁军,李淑进.碳化对混凝土渗透性及孔隙率的影响[J].工业建筑,2003,33(1):46-48.
Zhao Tiejun,Li Shujin.Effect of carbonation on permeability and porosity of concrete[J].Industrial Construction,2003,33(1):46-48.
[7] 许 晨,王传坤,金伟良.混凝土中氯离子侵蚀与碳化的相互影响[J].建筑材料学报,2011,14(3):376-380.
XU Chen,WANG Chuan-kun,JIN Wei-liang.Interaction Effect of Chloride Attack and Carbonization in Concrete[J].Journal of building materials,2011,14(3):376-380.
[8]金祖权,孙 伟,李秋义.碳化对混凝土中氯离子扩散的影响[J].北京科技大学学报,2008,30(8):921-925.
JIN Zu-quan,SUN Wei,LI Qiu-yi.Effect of carbonation on chloride diffusion in concrete[J].Journal of University of Science and Technology Beijing,2008,30(8):921-925.
[9]苏 卿.滨海环境下海砂混凝土结构耐久性机理与寿命预测研究[D].西安:西安建筑科技大学,2010.
Su Qing.Durability and Life Prediction of Sea Sand Concrete Structures under Coastal Environment[D].Xi′an:Xi′an University of Architecture and Technology,2010.
[10] 万小梅.力学荷载及环境复合因素作用下混凝土结构劣化机理研究[D].西安:西安建筑科技大学,2011.
Wan Xiao-mei Deterioration Mechanisms of Reinforced Concrete Structures under Combined Mechanical and Environmental Action[D].Xi′an:Xi′an University of Architecture and Technology,2011.
[11] 张 鹏,赵铁军,郭平功等.冻融和碳化作用对混凝土氯离子侵蚀的影响[J].东南大学学报:自然科学版,2006,36增刊(Ⅱ):238-242.
Zhang Peng,Zhao Tie-jun,Guo Ping-gong,Wittmann Folker.H.Influence of freeze-thaw cycles and carbonation action on chloride penetration into concrete[J].Journal of southeast university:Natural Science Edition,2006,36SUP(Ⅱ):238-242.
[12] 方 璟,梅国兴,陆采荣.碳化对混凝土性能影响的研究[J].水利水电技术,1996(2):58-64.
Fang Jing,Mei Guo-xing,Lu Cai-rong.Influence of Carbonation on Properties of Conerete[J].Water resources and hydropower engineering,1996(2):58-64.
[13] 孙丛涛.氯离子侵蚀环境下混凝土耐久性研究及寿命预测[D].西安:西安建筑科技大学,2010.
Sun Cong-tao.Study on Concrete Durability and Service Life Prediction Based on Chloride Corrosion[D].Xi′an:Xi′an University of Architecture and Technology,2010.
[14] 中华人民共和国住房与城乡建设部.普通混凝土长期性能和耐久性能试验方法标准(GB/T50082-2009)[S].北京:中国建筑工业出版社,2009.
Ministry of Housing and Urban,PRC.Test Code for Concrete of long-term performance and durability(GB/T50082-2009)[S].Beijing:China building industry Press,2001.
[15] 中华人民共和国交通部.水运工程混凝土试验规程(JTJ270-98)[S].北京:中国建筑工业出版社,1998.
Ministry of Communications,PRC.Testing Code of Concrete for Port and Waterwog Engineering(JTJ270-98)[S].Beijing:China building industry Press,1998.

相似文献/References:

[1]牛荻涛,陆炫毅,苗元耀,等.盐雾环境下疲劳损伤混凝土氯离子扩散性能[J].西安建筑科技大学学报:自然科学版,2015,47(05):617.[doi:DOI：10.15986/j.1006-7930.2015.05.001]
　NIU Ditao,LU Xuanyi,MIAO Yuanyao,et al.Diffusion of chloride ions into fatigue-damaged concrete in salt spray environment[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2015,47(03):617.[doi:DOI：10.15986/j.1006-7930.2015.05.001]
[2]彭跃辉,黄琳雅,陈梦成袁明胜.陶瓷粉再生混凝土氯离子扩散性能研究[J].西安建筑科技大学学报:自然科学版,2019,51(02):177.[doi:10.15986/j.1006-7930.2019.02.004]
　PENG Yuehui,HUANG Linya,Chen Mengcheng,et al.Study on chloride diffusion properties of reclaimed concrete from ceramic powder[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2019,51(03):177.[doi:10.15986/j.1006-7930.2019.02.004]
[3]罗大明 张桂涛.基于贝叶斯理论的氯离子扩散系数计算模型[J].西安建筑科技大学学报:自然科学版,2019,51(05):710.[doi:10.15986/j.1006-7930.2019.010.015]
　LUO Daming,ZHANG Guitao.Calculation model of chloride diffusion coefficient based on Bayesian theory[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2019,51(03):710.[doi:10.15986/j.1006-7930.2019.010.015]
[4]王 斌,于金山,李 天,等.修复混凝土内部钢筋纵向腐蚀行为研究[J].西安建筑科技大学学报:自然科学版,2023,55(04):520.[doi:10.15986/j.1006-7930.2023.04.006 ]
　WANG Bin,YU Jinshan,LI Tian,et al.Study on longitudinal corrosion behavior of internal reinforcement in repaired concrete[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2023,55(03):520.[doi:10.15986/j.1006-7930.2023.04.006 ]

备注/Memo

备注/Memo:
收稿日期:2012-01-09 修改稿日期:2012-05-03
基金项目:国家杰出青年科学基金(50725824);“十一五”国家科技支撑计划课题(2006BAJ03A02)
作者简介:元成方(1983-),男,河南郑州人,博士研究生,主要从事混凝土结构耐久性方面的研究
更新日期/Last Update: 2015-09-01