氯离子浓差对混凝土中钢筋锈蚀的影响
PDF下载 (17831)耿俊迪,蒋 义,姚森元,柳俊哲*.氯离子浓差对混凝土中钢筋锈蚀的影响[J].宁波大学学报(理工版),2017,30(6):73-77.DOI:
GENG Jun-di,JIANG Yi,YAO Sen-yuan,LIU Jun-zhe*.Effect of concentration difference of chloride ions on the corrosion of steel bar[J].Journal of Ningbo University(Natural Science & Engineering Edition),2017,30(6):73-77.DOI:
| Title: | Effect of concentration difference of chloride ions on the corrosion of steel bar |
| 作者: | 耿俊迪, 蒋 义, 姚森元, 柳俊哲* |
| Author(s): | GENG Jun-di, JIANG Yi, YAO Sen-yuan, LIU Jun-zhe* |
| 关键词: | 钢筋混凝土; 氯离子浓差; 阴阳两极面积比; 宏电池腐蚀 |
| Keywords: | reinforced concrete; chlorine ion concentration difference; area ratio of cathode and anode; macro cell corrosion |
| 分类号: | TU528.1 |
| 文献标识码: | A |
| 摘要: | 研究了存在氯离子浓差的混凝土中钢筋表面的腐蚀面积率、失重率和宏电池腐蚀特征, 并与均匀氯离子浓度相比较, 阐明了在混凝土内存在氯离子浓差作用下钢筋表面的腐蚀机理. 结果表明: 钢筋表面存在氯离子浓差相对于均匀浓度腐蚀严重, 浓差越大坑蚀越显著; 因氯离子浓差在钢筋表面形成的大阴极小阳极比小阴极大阳极腐蚀更为严重, 2种形式的宏电池腐蚀均比均匀腐蚀明显; 并且, 泌水作用加剧了混凝土内钢筋腐蚀. |
| Abstract: | Corroded area rate, weight loss rate and the macro cell corrosion of rebars in concrete subjected to concentration difference of chloride ion were investigated. In order to evaluate the corrosion mechanism of rebars, the corrosion behaviour of rebars in concrete under different chloride concentration difference were contrasted with that of the concrete contaminated with uniform chlorine ion concentration. Results indicated that compared with the concrete contaminated with uniform chlorine ion concentration, the rebars corroded area are higher in concrete under different chloride ion concentration difference, and the rebars corroded area are also higher in concrete in large cathode small anode contrasted with that of the condition in large cathode small anode. Furthermore, both of rebars corroded area are more serious than uniform chlorine ion concentration. |
| 参考文献 /References: | [1]., 王向东, 李玉素, 等. 氯离子环境下混凝土钢筋的锈蚀过程[J]. 腐蚀与保护, 2011, 32(3):190-194. [2].施惠生, 郭晓潞, 张贺. 氯离子含量对混凝土中钢筋锈蚀的影响[J]. 水泥技术, 2009(5):21-25. [3].薛焕, 金祖权, 王晓杰. 混凝土在海洋暴露过程中的氯离子渗透研究[J]. 海洋工程, 2015, 33(5):60-66. [4].LI Y S, SHEN H Y, SHAN W, et al. Flexural behavior of lightweight bamboo-steel composite slabs[J]. Thin-walled Structures, 2012, 53(2):83-90 [5].FLIS J, MANKOWSKI J, ZAKROCZYMSKI T, et al. Surface films on plasma nitrided stainless steel subjected to passivation treatments[J]. Corrosion Science, 1999, 41 (7):1257-1272. [6].YE H L, YE T, JIN N G, et al. Influence of cracking on chloride diffusivity and moisture influential depth in concrete subjected to simulated environmental conditions [J]. Construction and Building Materials, 2013, 47(5):66- 79. [7].高远, 陆春华, 袁思奇, 等. 海工混凝土氯离子分布概率模型分析与应用[J]. 水利水运工程学报. 2016(1):37- 43. [8].A?T-MOKHTAR A, BELARBI R, BENBOUDJEMA F. Experimental investigation of the variability of concrete durability properties[J]. Cement & Concrete Research, 2013, 45(3):21-36. [9].FERNANDES I, NORONHA F, TELES M. Microscopic analysis of alkali-aggregate reaction products in a 50-year-old concrete[J]. Materials Characterization, 2004, 53(2/4):295-306. [10].LIU J Z, BA M F, DU Y G, et al. Effects of chloride ions on carbonation rate hardened cement paste by X-ray CT techniques[J]. Construction and Building Materials, 2016, 122:619-627. [11].毛金鸿, 金伟良, 李志远. 氯盐侵蚀钢筋混凝土桥梁耐久性提升及寿命[J]. 中国公路学报, 2016, 29(1):61-66. [12].加利, 柳俊哲, 蒋义, 等. 亚硝酸根浓差作用下混凝土中钢筋的腐蚀特征[J]. 宁波大学学报(理工版), 2017, 30(2):95-100. [13].ZHANG Z W, LI Y S, LIU R. An analytical model of stresses in adhesive bonded interface between steel and bamboo plywood[J]. International Journal of Solids & Structures, 2015, 52:103-113. [14].柳俊哲, 邢峰, 贺智敏, 等. 钢筋混凝土中亚硝酸根与氯离子的临界摩尔比[J]. 硅酸盐学报, 2010, 38(4):615- 620. [15].BERROCAL C G, LUNDGREN K, L?FGREN I. Investigation on the influence of fibre reinforcement on chloride induced corrosion of RC structures[C]. 11th FIB International Phd Symposium in Civil Engineering, Japan: Tokyo, 2016: 303-310. [16].EBELL G, BURKERT A, FISCHER J, et al. Investigation of chloride-induced pitting corrosion of steel in concrete with innovative methods[J]. Materials & Corrosion, 2016, 67(6):583-590. [17].BA M F, QIAN C X, GAO G B. Nonlinear calculation of moisture transport in underground concrete[J]. Computer and Concrete, 2014, 13(3):361-375. [18].KOTE? P, VI?AN J, BRODNAN M, et al. Reliability of existing concrete bridges from the aspect of the reinforcement corrosion[J]. Key Engineering Materials, 2016, 691:119-128. |
| 备注/Memo: | 收稿日期: 2016?11?02. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（51478227）; 宁波市重大择优委托科技计划项目（2013C51006）. 第一作者: 耿俊迪（1992－）, 男, 浙江丽水人, 在读硕士研究生, 主要研究方向: 混凝土结构耐久性. E-mail: jundigeng@163.com *通信作者: 柳俊哲（1964－）, 男, 黑龙江五常人, 博导/教授, 主要研究方向: 混凝土结构耐久性. E-mail: liujunzhe@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
