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电化学  2006 

丝束电极研究裂纹对混凝土中钢筋腐蚀的影响

, PP. 191-194

Keywords: 混凝土,钢筋,腐蚀,丝束电极,裂纹,乙醇胺

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Abstract:

应用丝束电极技术测量浸在10%NaCl溶液中的混凝土内铁丝束的自腐蚀电位和极化电阻分布,研究裂纹对混凝土中铁丝腐蚀的影响和乙醇胺的缓蚀作用.结果表明,裂纹加速了水、氧和氯离子向两侧混凝土中扩散,增加了铁丝腐蚀的不均匀性.乙醇胺扩散到混凝土中,吸附在铁丝表面,基本不改变铁丝的自腐蚀电位,但显著降低了铁丝腐蚀速率,有效抑制了裂纹引起的不均匀腐蚀.

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