Language selection

Government of Canada / Gouvernement du Canada

Search

Protecting ductile iron water mains: what protection method works best for what soil condition?

From National Research Council Canada

Download
  1. (PDF, 1001 KiB)
AuthorSearch for: 1; Search for: 1
Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
SubjectWater mains
Abstract
Ductile iron replaced grey cast iron as pipe material in the early 1970s. It has been estimated that almost half of all new water mains in North America are ductile iron. The main cause of the structural deterioration of all metallic mains is external corrosion, which is induced by environmental and operational conditions. Internal corrosion, on the other hand, can cause significant functional (hydraulic, water quality) deterioration within the distribution system. Methods for external corrosion protection include passive (coatings, wraps, etc.), active (cathodic protection) or a combination of both. Successes and failures have been reported on the usage of various methods under different conditions and circumstances. This paper provides the state of the practice in corrosion protection of ductile iron water mains, and describes case histories that have been reported from around the world. Some conclusions are drawn as to the suitability of methods to specific circumstances.
Publication date
In
  • Journal of the American Water Works Association 95, no. Nov. 11 (1 November 2003): 110–125.
LanguageEnglish
Peer reviewedYes
NRC numberNRCC 45225
NRC-IRC-14282
NPARC number20386481
Export citationExport as RIS
Report a correctionReport a correction (opens in a new tab)
Record identifiere450a75e-fd1b-429e-99d5-14e45d5e5ec4
Record created2012-07-25
Record modified2020-04-02
Date modified: