Corrosion of corrugated galvanized steel in conservation structures

T. J. Moore; C. T. Hallmark; G. Chervenka; D. Henry; D. Garner

ABSTRACT:

Corrosion and subsequent failure of metal spillways in water retention structures were studied to assess corrosion rates of corrugated, galvanized metal in contact with evaporating water. Electrical conductivity, the most commonly used indicator of corrosivity, was a poor index of corrosion in these systems. However, concentration of individual ions, particularly chloride, and the amount of CaCO₃ precipitated upon evaporation of water in contact with the metal can be used to assess metal corrosivity. Application of the results and design changes in construction of corrugated, galvanized steel structures are discussed.

Footnotes

T. J. Moore is a research assistant and C. T. Hallmark is an associate professor of pedology, Soil and Crop Sciences Department, Texas Agricultural Experiment Station and Texas A & M University, College Station, 77843. G. Chervenka is an area soil scientist, D. Henry is an area engineer, and D. Garner is a district conservationist, Soil Conservation Service, U.S. Department of Agriculture, Bryan, Texas 77801. This report is published with the approval of the director, Texas Agricultural Experiment Station, as TA-18810.
Copyright 1986 by the Soil and Water Conservation Society

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