Ground Attack

by Cory Allen, Consulting Sci.; Raytheon Engrs. and Constructors Inc., Birmingham, AL,

Serial Information: Civil Engineering—ASCE, 1998, Vol. 68, Issue 1, Pg. 44-47

Document Type: Feature article


Buried surfaces made of concrete, ductile iron and carbon steel are susceptible to corrosion by the soil that surrounds them, but there are numerous ways that these surfaces may be protected. The most effective are barrier coatings, which vary widely in their makeup and application depending on the type and quality of protection needed. Common types are epoxy polymers, coal tar enamels, tape coatings, and multilayer systems combining several different types. The author stresses the need to handle coated pipes carefully to avoid coating damage that would compromise the protection. Other protective methods include cathodic protection (which reverses a damaging electric current), corrosion inhibitors, and altering concrete's mix to make it resistant to attack.

Subject Headings: Coating | Synthetic materials | Corrosion | Concrete | Steel | Polymer | Pipeline management

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