钢筋混凝土在盐渍土环境中的腐蚀行为
Corrosion Behavior of Reinforced Concrete in Saline Soil Environments
摘 要
依据盐渍土分类规则,设置了系列的盐渍土模拟溶液。采用极化曲线测试了干湿循环模拟盐渍土环境中氯离子、硫酸根离子的不同比例对钢筋腐蚀行为的影响,并采用离子扩散装置考察了硫酸根存在下氯离子在混凝土中的扩散特征。结果表明，盐渍土环境对混凝土中钢筋的腐蚀有很大的影响,不同盐渍土环境对钢筋腐蚀的影响程度不同,混凝土中钢筋在氯盐渍土和亚氯盐渍土环境中,腐蚀速率较快;此外,硫酸根的含量在一定范围内对氯离子的扩散有促进作用,这一结果与电化学测试结果相对应。
钢筋混凝土
氯离子
硫酸根
腐蚀
saline soil
reinforced concrete
chloride ion
sulfate ion
corrosion
Abstract
A series of simulated solution of saline soil was settled according to the classification of saline soil,and the effect of the ratio of chloride ion to sulfate ion on corrosion behavior of reinforcing steel under dry-wet cycle condition was investigated by polarization curves,and an ion diffusion device was also utilized to discuss about the diffusion feature of chloride ion in concrete in the presence of sulfate ion. The results showed that saline soil environment had a strong effect on corrosion of reinforced concrete. The corrosion degrees of reinforced concrete in different saline soil environments were different. Corrosion rates of reinforcement in chlorine saline soil and sub chlorine saline soil were heavier;and sulfate had a promoting effect on chloride diffusion within a certain concentration range,which corresponded to the electrochemical results well.
中图分类号 TU528.01 DOI 10.11973/fsyfh-201509005
所属栏目 试验研究
基金项目 国家电网重点科研课题（gwkj2012-010-II-2）;国家自然科学基金（50771062）
收稿日期 2014/9/15
修改稿日期
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备注张俊喜(1969-),博士,教授,从事材料腐蚀与防护研究。
引用该论文: YI Bo,LIN De-yuan,CHEN Yun-xiang,HONG Yi-cheng,ZHANG Jun-xi. Corrosion Behavior of Reinforced Concrete in Saline Soil Environments[J]. Corrosion & Protection, 2015, 36(9): 819
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参考文献
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【21】俞海勇，张贺，王琼,等. 海工混凝土钢筋锈蚀速率预测模型研究[J]. 建筑材料学报,2009,12(4):478-481.
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【23】吴庆，汪俊华，吴功勋. 混凝土硫酸盐侵蚀双因素影响及干湿循环与连续浸泡差异分析[J]. 四川建筑科学研究,2010(6):192-194.
【2】汪鹰，史苑芗，魏宝明. 原子力显微镜对钢筋表面钝化膜的研究[J]. 中国腐蚀与防护学报,1998,18(2):102-106.
【3】储炜. 模拟混凝土孔溶液中钢筋钝化膜的光电化学方法研究[J]. 电化学,1995,1(3):291-297.
【4】洪乃丰. 混凝土中钢筋腐蚀与结构物的耐久性[J]. 公路,2001(2):66-69.
【5】RYOU J S,ANN K Y. Variation in the chloride threshold level for steel corrosion in concrete arising from different chloride sources[J]. Magazine of Concrete Research,2008,60:177-187.
【6】CASTEL A,VIDAL T,FRANCOIS R,et al. Influence of steel-concrete interface quality on reinforcement corrosion induced by chlorides[J]. Magazine of Concrete Research,2003,55(2):151-159.
【7】SOYLEV T A,FRANCOIS R. Quality of steel in concrete interface and corrosion of reinforcing steel[J]. Cement and Concrete Research,2003,33(9):1407-1415.
【8】骆静静，杨鼎宜，陈建军. 复合溶液中钢筋锈蚀对混凝土的损伤研究[J]. 混凝土与水泥制品,2013,9:1-6.
【9】AL-AMOUDI O S B,MOHAMMED M. The effect of chloride and sulfate ions on reinforcement corrosion[J]. Cement and Concrete Research,1993,23:139-146.
【10】DEHWAH H A F,MASLEHUDDIN M,AUSTIN S A. Long term effect of sulfate ions and associated cation type on chloride-induced reinforcement corrosion in portland cement concretes[J]. Cement and Concrete Composites,2002,24:17-25.
【11】杜健民，焦瑞敏. 氯离子含量对混凝土硫酸盐腐蚀程度的影响研究[J]. 中国矿业大学学报,2012,41(6):906-911.
【12】王伦，秦鸿根. 不同腐蚀盐环境下的混凝土耐久性[J]. 混凝土,2011,33(11):14-17.
【13】金祖权，孙伟，张云升，等. 氯盐、硫酸盐作用下高性能混凝土损伤研究[J]. 工业建筑,2005,35(1):5-7.
【14】彭高鹏. 西部盐渍土与寒旱地区的混凝土耐久性及寿命预测研究[D]. 兰州:兰州理工大学硕士学位论文,2011.
【15】胡融刚，杜荣归，林昌健. 氯离子侵蚀下钢筋在混凝土中腐蚀行为的EIS研究[J]. 电化学,2003,9(2):189-195.
【16】贾丙丽，曹发和，陈安娜,等. 干湿循环下混凝土中钢筋腐蚀的电化学检测[J]. 电化学,2010,16(4):355-361.
【17】贾丙丽，曹发和，刘文娟,等. 钢筋混凝土腐蚀的电化学检测研究现状[J]. 材料科学与工程学报,2011,28(5):791-796.
【18】李果，袁迎曙，张宝渠. 干湿循环对混凝土内钢筋宏电流的影响[J]. 混凝土,2003(8):34-36.
【19】AL-AMOUDI O S B,MASLEHUDDIN R M. Influence of sulfate ions on chloride-induced reinforcement corrosion in portland and blended cement concretes[C]//Cement,Concrete,and Aggregates,Boston:CCAGP,1994:3-11.
【20】施锦杰，孙伟. 混凝土中钢筋腐蚀速率模型研究进展[J]. 硅酸盐学报,2012,40(4):620-630.
【21】俞海勇，张贺，王琼,等. 海工混凝土钢筋锈蚀速率预测模型研究[J]. 建筑材料学报,2009,12(4):478-481.
【22】OBSERHOOISTER R. Pore structure,permeability and diffusivity of hardened cement paste and concrete in relation to durability:Status and prospects[C]//Proceeding of 8th International Congress on the Chemistry of Cement,Rio de Janeiro:[s.n.],1986:323-335.
【23】吴庆，汪俊华，吴功勋. 混凝土硫酸盐侵蚀双因素影响及干湿循环与连续浸泡差异分析[J]. 四川建筑科学研究,2010(6):192-194.
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