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This paper documents the removal of floor coatings from concrete surfaces utilizing UHP water jet tools. Traditional methods, including shot blasting and grinding, meet the required production rates, but may fail to remove all of the invisible contaminants. They can also introduce dust into the environment.
This paper documents the removal of floor coatings from concrete surfaces utilizing UHP water jet tools. Traditional methods, including shot blasting and grinding, meet the required production rates, but may fail to remove all of the invisible contaminants. They can also introduce dust into the environment. Earlier versions of water jetting equipment succeeded in addressing two main limitations of grit blasting, containment of media and contaminant removal, but failed to meet required removal rates. New systems are now available that combine the advantages of UHP water jetting into a system that can meet required removal rates with a single machine.
Successful repair material and coating applications are dependent on proper concrete surface preparation. Different surface preparation technologies and quality control methods are reviewed to increase the successful application of materials applied to existing concrete surfaces.
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The author will present on the various generic coatings technologies available for lining concrete and discuss the advantages and disadvantages of each one. Discussion will include epoxy, polyurethane and polyurea technologies. The goal of the presentation will be to provide some guidance to the attendees on when is the right application to select each technology as part of a specification.
The goal of this presentation is to help contractors and applicators first identify the problem, understand its cause, and make an informed decision on whether to complete the surface application or to seek a professional opinion in regard to the preferred repair method.