Abstract
Electro‐corrosion of Metal and Concrete. The damage done to metal and ferro‐concrete by stray electric currents has long been known. Reference is made to the extensive investigation in the U.S.A. in 1943–45 (Corrosion, 1947, 3, (1), 37). It has been the subject of much research also in the U.S.S.R. (Stroit. Prom., 1953 (6), 37, and 1954 (7) 38). Several examples are cited and some experimental work described, including detection, measurement, and corrosive effect of stray currents or leakages. Various precautionary measures are suggested, such as the replacement of current‐carrying materials by those having insulating properties, e.g. Torkret or gunite, plastics, etc.; better insulation generally; excluding moisture; using more effective protective coatings of bitumen, asphalt, and anti‐corrosion paints. Among useful protectives mentioned are Russian Gidro‐isol, Borul and Brizol.—(V. A. Pritula et al., Khim. Prom.—Chem. Ind.—1957 (1), 33–35.)
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