摘要
依据地铁迷流对地下埋设的金属管线和钢筋混凝土主体结构中钢筋发生阳极氧化的电化学腐蚀机理，模拟了钢筋混凝土试件处于水和土壤中的两种腐蚀介质，并就混凝土中的钢筋在不同外电压时发生的腐蚀进行了试验，同时测定了当混凝土试件处于两种腐蚀介质时，其中钢筋发生电化学腐蚀的电化学当量和腐蚀速率。通过实验数据分析，得出钢筋的电化学当量和腐蚀速率受其所在腐蚀环境介质的影响，其在自然腐蚀状态下的电化学当量不适用于计算地铁迷流在混凝土中对钢筋产生的腐蚀量。
By means of the mechanism of electrochemical corrosion of anodic oxidixation of
anodic oxidization of rebars in reinforced concrete main structure and metallic pipelines buried
underground in metro,this paper deals with the simulation of two kinds of corrosive
media,namely water and soil,in which reinforced concrete specimen is positioned,and executes
the corrosion of rebars in concrete specimen under different external electric
potential,simultaneously tests the electrochemical equivalent and corrosion rate of rebars in
concrete specimen which is positioned in the two corrosive media.Through analyzing the
measured data,it can be inferred that electochemical equivalent and corrosion rate of metals
are influenced by he corrosive envionmental media,and the electeochemical equivalent of
natural corrosion for mteals can not be utilized to calculate the magnitude of metal corrosion
inducde by metro stray current flow.
出处
《西部探矿工程》
CAS
1999年第3期66-72,共7页
West-China Exploration Engineering
关键词
地铁
钢筋混凝土
电化学腐蚀
腐蚀速率
钢筋腐蚀
metroreinforcde concreteelectrochemical
corrosionelectrochemical equivalentcorrosion rate
