混凝土中掺入粉煤灰对地铁迷流的抑制作用  

Restraint Effect of Concrete Admixed with Fly Ash on Subway Stray Currents

作　　者：陈志源[1] 戴巍巍[2] 贺鸿珠[3] 史美伦[1] 

机构地区：[1]同济大学材料学院,上海200095 [2]上海市市政工程管理局,上海200023 [3]上海市建筑科学研究院,上海200032

出　　处：《中国市政工程》2002年第4期63-66,共4页China Municipal Engineering

摘　　要：通过研究建立了符合地铁实际使用情况的模型 ,并由实验方法得出结论 :掺入粉煤灰可有效地提高混凝土的阻抗模和抑制杂散电流腐蚀。粉煤灰对杂散电流的抑制作用随其掺量的增加而增加。但综合考虑强度等其他因素以掺入 30 %粉煤灰为宜。A model conforming to practical conditions of subway is studied and established, and a conclusion is drawn from experiments that: through admixing fly ash into concrete will increase its impedance and restrain stray current corrosion effectively. The restraint effect on stray currents will improve along with the increase of admixed fly ash in amount, but after considering the strength and other factors comprehensively, the amount of 30% fly ash is suitable.

关 键 词：混凝土 粉煤灰 地铁迷流 交流阻抗法 杂散电流腐蚀 

分 类 号：U231.8[交通运输工程—道路与铁道工程]