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Assessment of Soil Characteristics on External Corrosion of Water Pipes  

Bae, Chul-Ho (한국수자원공사 수자원연구원)
Kim, Ju-Hwan (한국수자원공사 수자원연구원)
Park, Sang-Young (한국수자원공사 수자원연구원)
Kim, Jeong-Hyun (한국수자원공사 수자원연구원)
Hong, Seong-Ho (숭실대학교 환경화학공학과)
Lee, Kyoung-Jae (한국수자원공사 수자원연구원)
Publication Information
Journal of Korean Society of Water and Wastewater / v.20, no.5, 2006 , pp. 737-745 More about this Journal
Abstract
The goal of this study is to present an external pit corrosion rate($p_{ecr}$) model with considering both the age of pipe and the soil characteristics. The correlation of nonlinear exponential model among conventional empirical models was a little higher than other empirical models in the prediction of $p_{ecr}$ according to the age of pipe. However, there has been a limit to predict Peer with the model by using only a pipe age since installation as a variable. The soil analysis results from sixty nine samples showed that all of the samples were non corrosive in the assessment of ANSI/AWWA scoring system. The correlation of soil corrosion factors and $p_{ecr}$ was also low. The application result of linear and nonlinear regression models that soil characteristics only showed a low correlation with $p_{ecr}$ Proposed nonlinear regression model in this study, with considering both the age of pipe and the soil characteristics, showed a little higher correlation ($R^2=0.46$) than conventional model.
Keywords
water pipe; soil corrosion potential; external corrosion rate; nonlinear regression analysis;
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1 정원식, 이현동, 유명진, 곽필재 (2001) 토양환경 영향 인자를 이용한 상수도관 외부부식 평가에 관한 연구. 상하수도학회지. 23(10), pp.1611-1619
2 Dempsey, P., Manook, B.A. (1986) Assessing the condition of cast iron pipes, WRc United Kingdom, pp. 1-40
3 Romanoff, M. (1957) Underground corrosion, National Bureau of Standards Circular 579, Washington D.C., US Goverment Printing Office
4 Sheikh, A.K., Boah, J.K., Hensen, D.A. (1990), Statistical modelling of pitting corrosion and pipeline reliability, Corrosion, 46(3), pp.190-197   DOI
5 Chaker V., Palmer J.D. (1989) Effect of soil characteristics on corrosion, ASTM. Philadelphia, PA 19103
6 Rajani B., Maker J. (2000) Investigation of grey cast iron water mains to develop a methodology for estimating service life, AWW ARF, pp.1-249
7 Romanoff, M.(1964), Exterior Corrosion of Cast-iron Pipe, AWWA, 56(9): 1129-1143   DOI
8 Doyle, G. (2000) The role of soil in the external corrosion of cast iron water mains in Toronto, Canada, the degree of master of applied science, Graduate department of civil engineering, University of Toronto, pp.1-75
9 Kucera, V., Mattson, E. (1987) Atmospheric corrosion, Corrosion mechanics, F. Mansfeld, Ed., Mercel Dekker, Inc., New York, NY
10 Seica, M.V., Packer, J.A., Grabinsky, M.W.F., Adams, B.J., Karney, B.W. (2000) Evaluation and testing of cast iron and ductile iron water main samples, Final report to city of Toronto, Department of civil engineering, University of Toronto, Ontario, pp.1-203
11 이현동, 배철호, 홍성호, 황재윤, 곽필재 (2004) 상수관로중 주철관종의 잔존수명 평가에 관한 연구. 한국물환경학회지, 20(3), pp.206-214
12 Berthouex P.M., Brown, L.C. (2002) Statistics for environmental engineers, Lewis Publishers, pp.289-297
13 Rossum, J.R. (1969), Prediction of Pitting in ferrous Metal From Soil Parameters, Jour. AWWA, 61(6), pp.105-310
14 O'day, D.K., Weiss, R., Chiavari, S., Blair, D. (1986), Water main evaluation for Rehabilitation/Replacement, Dnver, Colo., AWWARF and AWWA
15 ANSI/AWWA C105/A21.5-99 (1999) American national standard for polyethylene encasement for ductile-iron pipe systems, AWWA, Denver, CO