过去对混凝土腐蚀的研究，其腐蚀液与实际的混凝土孔溶液有较大的差异。采用水泥提取液模拟混凝土孔溶液，通过自腐蚀电位、动电位极化和电化学阻抗谱研究了Ca（NO2）：及商用阻锈剂NNMI和NNRI对混凝土中钢筋氯盐腐蚀行为的影响。结果表明：3种阻锈剂均能有效降低钢筋受cl-腐蚀的风险，减小腐蚀速率，并能不同程度地提高钢筋腐蚀的临界cl-浓度；Ca（NO2）2为阳极型阻锈剂，当[NO2]／[C1-]为0．62～1．47时，阻锈效果最好，高达98．2％，NNMI和NNRI为以抑制阴极反应为主的综合型阻锈剂，在推荐掺量下，当环境中Cl-浓度为0．03mol／L左右时，阻锈效率分别可达到85．0％和87．1％。因此，应根据腐蚀环境状况，选用不同的阻锈剂。
参考文献
| [1] | 洪乃丰.混凝土中钢筋腐蚀与阻锈剂[J].混凝土,2001(06):25-28. |
| [2] | Berke N S;Hicks M C;Tourney P G.Evaluation of concrete corrosion inhibitors[A].Houston:[s.n.],1993:3271-3286. |
| [3] | 洪乃丰.氯盐腐蚀与钢筋阻锈剂[J].混凝土,2004(01):58-60. |
| [4] | James M. Gaidis .Chemistry of corrosion inhibitors[J].Cement & concrete composites,2004(3):181-189. |
| [5] | H.Saricimen;M. Mohammad;A. Quddus .Effectiveness of concrete inhibitors in retarding rebar corrosion[J].Cement & concrete composites,2002(1):89-100. |
| [6] | De Sehutter G;Luo L .Effect of corrosion inhibiting admixtures on concrete properties[J].Construction and Building Materials,2004,18(07):483-489. |
| [7] | Al-Amoudi O S B;Maslehuddin M;Lashari A N et al.Effeetiveness of corrosion inhibitors in contaminated conerere[J].Cement and Concrete Composites,2003,25(4/5):439-449. |
| [8] | A. Poursaee;C.M. Hansson .Reinforcing steel passivation in mortar and pore solution[J].Cement and Concrete Research,2007(7):1127-1133. |
| [9] | L. Li;A.A. Sagues .Chloride Corrosion Threshold of Reinforcing Steel in Alkaline Solutions-Open-Circuit Immersion Tests[J].Corrosion: The Journal of Science and Engineering,2001(1):19-28. |
| [10] | 洪定海.混凝土中钢筋的腐蚀与保护[M].北京:中国铁道出版社,1998:1-184. |
| [11] | Berke N S;Pfeifer D W;Weil T G .Protection against chloride-induced corrosion-A review of data and economics on microsilica and calcium nitrite[J].Concrete International,1988,10(12):44-55. |
| [12] | 王佳;曹楚南;陈家坚 等.缓蚀剂阳极脱附现象的研究-Ⅰ.缓蚀剂阳极脱附现象[J].中国腐蚀与防护学报,1995,15(04):241-246. |
| [13] | 王佳;曹楚南 .缓蚀剂阳极脱附现象的研究-Ⅱ.缓蚀剂阳极脱附对电极阻抗的影响[J].中国腐蚀与防护学报,1995,15(04):247-253. |
| [14] | 王佳;曹楚南 .缓蚀剂阳极脱附现象的研究-Ⅲ.缓蚀剂阳极脱附机制[J].中国腐蚀与防护学报,1996,16(01):9-14. |
| [15] | Feng Y;Siow K S;Teo W K et al.The synergistic effects of propargyl alcoholand potassium iodide on the inhibition of mild steel in 0.5 M sulfuric acid solution[J].Corrosion Science,1999,41(05):829-852. |
| [16] | Omar S. Baghabra Al-Amoudi;Mohammed Maslehuddin;A. N. Lashari .Effectiveness of Corrosion inhibitors in contaminated concrete[J].Cement & concrete composites,2003(4/5):439-449. |
| [17] | Han Young Moon;Kook Jae Shin .Evaluation on steel bar corrosion embedded in antiwashout underwater concrete containing mineral admixtures[J].Cement and Concrete Research,2006(3):521-529. |
| [18] | M. Ormellese;F. Bolzoni L. Lazzari;P. Pedeferri .Effect of corrosion inhibitors on the initiation of chloride-induced corrosion on reinforced concrete structures[J].Materials and Corrosion,2008(2):98-106. |
| [19] | 柳俊哲,巴恒静.掺防冻剂混凝土钢筋腐蚀程度的评价[J].混凝土,2004(01):19-21. |
| [20] | Ormellese M;Berra M;Bolzoni F et al.Corrosion inhibitors for chlorides induced corrosion in reinforced concrete structures[J].Cement and Concrete Research,2006,36(03):536-547. |
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