摘要
本文阐述了地铁轨枕等杂散电流的截流子性质 ,以及在混凝土中掺加粉煤灰对地铁等杂散电流腐蚀的抑制作用、机理。杂散电流作为离子流 ,它能破坏钢筋的表面钝化膜 ,促进钢筋的锈蚀。在混凝土中掺用粉煤灰抑制了钢筋表面钝化膜的破坏 ,从而降低了钢筋的杂散电流腐蚀。
It is shown in this paper that the carriers of the stray current in the subway are ions rather than electrons. The stray current corrosion is due to the damage of the passivation film on the rebar and it can be inhibited by blending of fly ash to the concrete.
出处
《混凝土与水泥制品》
北大核心
2001年第1期21-23,共3页
China Concrete and Cement Products
