缓蚀剂辅助再碱化技术对碳化钢筋混凝土的修复
Repair of Carbonated Steel Bar Reinforced Concrete by Corrosion Inhibitor Auxiliary Realkalization Technology
摘 要
通过迁移试验研究了两种醇胺类缓蚀剂在混凝土保护层中的传质行为；通过电化学测试方法研究了缓蚀剂在模拟混凝土孔隙液（2 000 mg/L NaCl溶液）中对钢筋的缓蚀效果；通过模拟试验研究了缓蚀剂辅助再碱化技术对碳化钢筋混泥土结构的修复效果。结果表明：在模拟混凝土孔隙液中，缓蚀剂能有效抑制钢筋的腐蚀；外加电场对醇胺缓蚀剂的迁移扩散过程起到了促进作用；缓蚀剂辅助再碱化技术可以提高再碱化的修复效果，有效抑制钢筋混凝土中钢筋的腐蚀。
电化学再碱化
缓蚀剂
物料传递
steel bar reinforced concrete
electrochemical realkalization
corrosion inhibitor
material transfer
Abstract
The mass transfer behavior of two alcohol amine corrosion inhibitors in concrete protective layer was studied by migration experiments.Corrosion inhibition effect of corrosion inhibitors on steel bars in simulated concrete pore liquid (2 000 mg/L NaCl solution) was studied by electrochemical testing method.The repairing effect of corrosion inhibitor auxiliary realkaliation technology on carbonized steel bar reinforced concrete structure was studied by simulation test.The results show that the corrosion inhibitors can effectively inhibit the corrosion of steel bars in simulated concrete pore solution.The impressed electric field promoted the migration and diffusion process of the alcohol amine corrosion inhibitors.The corrosion inhibitor auxiliary realkaliation technology can improve the repair effect of realkalization and effectively inhibit the corrosion of steel bars in concrete structure.
中图分类号 TG174.4 DOI 10.11973/fsyfh-201904004
所属栏目 试验研究
基金项目 国家自然科学基金（50771602；50678127）
收稿日期 2017/10/25
修改稿日期
网络出版日期
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引用该论文: JIANG Jun,SUN Ke,CHEN Jian,YUAN Qiang,ZHANG Junxi. Repair of Carbonated Steel Bar Reinforced Concrete by Corrosion Inhibitor Auxiliary Realkalization Technology[J]. Corrosion & Protection, 2019, 40(4): 254
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参考文献
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【2】MOHANKUMAR G. Concrete repair by electrodeposition[J]. Indian Concrete Journal,2005,79(8):57-60.
【3】YEIH W,CHANG J J. A study on the efficiency of electrochemical realkalisation of carbonated concrete[J]. Construction and Building Materials,2005,19(7):516-524.
【4】CASTELLOTE M,LLORENTE I,ANDRADE C. Influence of the composition of the binder and the carbonation on the zeta potential values of hardened cementitious materials[J]. Cement and Concrete Research,2006,36(10):1915-1921.
【5】MIETZ J. Electrochemical realkalisation for rehabilitation of reinforced concrete structures[J]. Materials and Corrosion,1995,46(9):527-533.
【6】BEWLEY D. Realkalisation of reinforced concrete structures[J]. Concrete,2005,39(3):25-29.
【7】PENHALL D. Electrolytic treatment of concrete to restore its corrosion resistance[J]. Civil Engineering,1994,2(11):17-21.
【8】MIRANDA J M,GONZÁLEZ J A,COBO A,et al. Several questions about electrochemical rehabilitation methods for reinforced concrete structures[J]. Corrosion Science,2006,48(8):2172-2188.
【9】BERTOLINI L,LUPICA SPAGNOLO S,REDAELLI E. Electrochemical realkalization as a conservation technique for reinforced concrete[J]. International Journal of Architectural Heritage,2012,6(2):214-227.
【10】REDAELLI E,BERTOLINI L. Electrochemical repair techniques in carbonated concrete. Part I:electrochemical realkalisation[J]. Journal of Applied Electrochemistry,2011,41(7):817-827.
【11】GONZÁLEZ J A,COBO A,GONZÁLEZ M N,et al. On the effectiveness of realkalisation as a rehabilitation method for corroded reinforced concrete structures[J]. Materials and Corrosion,2000,51(2):97-103.
【12】张俊喜,杨吉,张铃松,等. 碳化混凝土再碱化过程中钢筋在Ca(OH)2溶液中的电极过程[J]. 腐蚀与防护,2008,29(9):507-509,516.
【13】NMAI C,FARRINGTON S,BOBROSKI G. Organic-based corrosion inhibiting admixture for reinforced concrete[J]. Concrete International,1992,14(4):45-51.
【14】SÖYLEV T A,MCNALLY C,RICHARDSON M G. The effect of a new generation surface-applied organic inhibitor on concrete properties[J]. Cement and Concrete Composites,2007,29(5):357-364.
【15】PAGE C L,NGALA V T,PAGE M M. Corrosion inhibitors in concrete repair systems[J]. Magazine of Concrete Research,2000,52(1):25-37.
【16】BENZINA MECHMECHE L,DHOUIBI L,BEN OUEZDOU M,et al. Investigation of the early effectiveness of an amino-alcohol based corrosion inhibitor using simulated pore solutions and mortar specimens[J]. Cement and Concrete Composites,2008,30(3):167-173.
【17】蒋俊,张俊喜,鲁进亮,等. 缓蚀剂应用于碳化混凝土再碱化技术的可行性研究[J]. 建筑材料学报,2015,18(4):559-564,571.
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【19】SAWADA S,KUBO J,PAGE C L,et al. Electrochemical injection of organic corrosion inhibitors into carbonated cementitious materials:Part 1. Effects on pore solution chemistry[J]. Corrosion Science,2007,49(3):1186-1204.
【20】KUBO J,SAWADA S,PAGE C L,et al. Electrochemical injection of organic corrosion inhibitors into carbonated cementitious materials:Part 2. Mathematical modelling[J]. Corrosion Science,2007,49(3):1205-1227.
【21】KUBO J,TANAKA Y,PAGE C L,et al. Application of electrochemical organic corrosion inhibitor injection to a carbonated reinforced concrete railway viaduct[J]. Construction and Building Materials,2013,39:2-8.
【22】BUENFELD N R,GLASS G K,HASSANEIN A M,et al. Chloride transport in concrete subjected to electric field[J]. Journal of Materials in Civil Engineering,1998,10(4):220-228.
【23】PAN T Y,NGUYEN T A,SHI X M. Assessment of electrical injection of corrosion inhibitor for corrosion protection of reinforced concrete[J]. Transportation Research Record:Journal of the Transportation Research Board,2008,2044(1):51-60.
【24】SAWADA S,PAGE C L,PAGE M M. Electrochemical injection of organic corrosion inhibitors into concrete[J]. Corrosion Science,2005,47(8):2063-2078.
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