Statistic assessment of the factors that take part in the corrosion on buried pipe
Keywords:soil corrosion, buried pipes corrosion, cast iron, multivariate analysis, soil resisitivity
Corrosion of buried pipes is a phenomenon that depends more on the corrosivity of the ground than on the nature of the metal. The evaluation of the corrosivity of the ground is a complex activity because there are many variables influencing the process. In this work a multivariate analysis of the main factors taking part in corrosion of buried structures was carried out. This analysis allows a factorial classification and permits the transformations of a set of correlated variables into a smaller set of not correlated variables. This study gives a better understanding of data of the experimental units and determines the variables of major influence over the variable response. With this information a smaller number of variables could to be measured. This paper describes the experimental techniques used and the statistics analysis realized of the 6 variables measured in the experimental units. A new set of 3 variables is obtained, which allows a classification of the soils according to corrosivity with a confidence of 90% and an error of 20%.
G. H. Koch et al. “Corrosion costs and preventive strategies in the United States”. Report by CC Technologies Laboratories, Inc. to Federal Highway Administration (FHWA), Office of Infrastructure Research and Development, Report FHWA-RD-01-156. September, 2001.
E. Levlin, T-G. Vinka. “Corrosion in an urban soil profile–aeration cell experiment in situ in the soil”. Oral Presentation at Erocorr. September, 10-14. 2000. London UK.
E. Levlin. Corros. Sci. N.o 38. 1996. pp. 2083-2090.
ANSI/AWWA C105. American Water Works Associaton. Denver, Colorado.
M. Romanoff. “Results of National Bureau of Standards Corrosion Investigation in Disturbed and Undisturbed Soils”. 12th Annual Appalachian Underground Corrosion Short Course. Technical Bulletin. N.o 86. 1967.
B. Spickelmire. Materials Performance. N.o 41. 2002. pp. 16-23. 7. Y. Katano et al. Corrosion. N.o 59. 2003. pp. 155-161.
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