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Galvanic Liquid Applied Coating Development for Protection of Steel in ConcreteCorrosion of reinforcing steel in concrete is a major problem affecting NASA facilities at Kennedy Space Center (KSC), other government agencies, and the general public. Problems include damage to KSC launch support structures, transportation and marine infrastructures, as well as building structures. A galvanic liquid applied coating was developed at KSC in order to address this problem. The coating is a non-epoxy metal rich ethyl silicate liquid coating. The coating is applied as a liquid from initial stage to final stage. Preliminary data shows that this coating system exceeds the NACE 100 millivolt shift criterion. The remainder of the paper details the development of the coating system through the following phases: Phase I: Development of multiple formulations of the coating to achieve easy application characteristics, predictable galvanic activity, long-term protection, and minimum environmental impact. Phase II: Improvement of the formulations tested in Phase I including optimization of metallic loading as well as incorporation of humectants for continuous activation. Phase III: Application and testing of improved formulations on the test blocks. Phase IV: Incorporation of the final formulation upgrades onto large instrumented structures (slabs).
Document ID
20120003329
Acquisition Source
Kennedy Space Center
Document Type
Conference Paper
Authors
Curran, Joseph John (ASRC Aerospace Corp. Cocoa Beach, FL, United States)
Curran, Jerry (ASRC Aerospace Corp. Cocoa Beach, FL, United States)
MacDowell, Louis (NASA Kennedy Space Center Cocoa Beach, FL, United States)
Date Acquired
August 25, 2013
Publication Date
March 28, 2004
Subject Category
Metals And Metallic Materials
Report/Patent Number
KSC-2004-028
Meeting Information
Meeting: Corrosion 2004 Conference and Expo 2004
Location: New Orleans, LA
Country: United States
Start Date: March 28, 2004
End Date: April 1, 2004
Sponsors: National Association of Corrosion Engineers
Distribution Limits
Public
Copyright
Public Use Permitted.

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