采用RH402定氢仪和盐雾腐蚀试验方法研究了索缆用镀锌钢丝在模拟酸雨腐蚀介质中的腐蚀行为,并用XRD表征腐蚀产物.结果表明,经2.5个月腐蚀后,位于索缆外层钢丝的镀锌层发生局部耗尽,而钢丝的氢含量随暴露时间延长呈增加趋势;经2个月和3个月腐蚀的索缆镀锌钢丝的主要腐蚀产物分别为3Zn(OH)2·ZnSO4·5H2O和ZnSO3·2H2O与Fe6(OH)12CO3.提出"三个腐蚀阶段"以描述索缆镀锌钢丝在模拟酸雨中的腐蚀过程.
参考文献
| [1] | 黄跃平,胥明,姜益军等.缆索局部腐蚀检测与评估分析[J].腐蚀科学与防护技术,2006,18(2):132. |
| [2] | Betti R.Environmental deterioration effects in bridge wires[J].Recent Adv.Bridge Eng.,1996:367. |
| [3] | Mayrbaurl R M,Camo S.Cracking and fracture of suspension bridge wire[J].J.Bridge Eng.,2001,6(6):645. |
| [4] | Mehrabi A B,Telang N M.Cable-stayed bridge performance evaluation-lessons from the field[A].Proceedings of the Structures Congress and Exposition[C],2003:1083. |
| [5] | Yukikazu Y.Maintenance of steel bridges on HonshuShikoku cross[J].Constr.Steel Res.,2002,58:131. |
| [6] | Suzumura K,Nakamura S.Environmental factors affecting corrosion of galvanized steel wires[J].J.Mater.Civil Eng.,2004,16(1):1. |
| [7] | Mahmoud K A.Multi--scale Damage related to Environment Assisted Cracking[M].Shanghai:East China University Science and Technology Press,2005:289. |
| [8] | Betti R,West A C,Vermass G,et al.Corrosion and embrittlement ofhigh-strength steel bridge wires[J].J.Bridge Eng.,2005,10(2):151. |
| [9] | Hamilton H R.Bridge stayed cable corrosion protection,Ⅱ:Accelerated corrosion tests[J].Bridge Eng.,1998,3(2):72. |
| [10] | 黎学明,刘强,孔令峰等.模拟酸雨溶液中应力对镀锌钢绞线腐蚀行为影响[J].腐蚀科学与防护技术,2008,20(1):44. |
| [11] | Yadav A P,Nishikata A,Tsuru T.Degradation mechanism of galvanized steel in wet-dry cycUc environment containing chloride ions[J].Corros.Sci.,2004,46(2):361. |
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