The Case of the Coal Tar Epoxy That Fizzled

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Title: The Case of the Coal Tar Epoxy That Fizzled

Author(s): Ray Tombaugh

Publication: Concrete International

Volume: 33

Issue: 11

Appears on pages(s): 53-56

Keywords: coating, failure, surface preparation, adhesion, blister, chemical attack, bacteria

DOI:

Date: 11/1/2011

Abstract:
During the construction of a wastewater treatment facility in 2007, the wet wells and other basins were coated with a coal tar epoxy. Within a year and a half after commissioning, the plant operators noticed that the coating was delaminating from the walls of several clarifier wet wells. Yet, inspections of the clarifier basins showed no coating failures. This article presents a field and laboratory investigation of coating deterioration as well as repair recommendation.




  

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