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In the realm of new construction and maintenance lining projects, e.g., tank and vessel linings and pipelines, “productivity” has become a buzzword with applicators, owners, coating manufacturers and engineering companies. There can be a difficult balancing act to ensure so called “rapid productivity” is delivered and yet provide owners with the best net return on their investment.
In the realm of new construction and maintenance lining projects, e.g., tank and vessel linings and pipelines, “productivity” has become a buzzword with applicators, owners, coating manufacturers and engineering companies. There can be a difficult balancing act to ensure so called “rapid productivity” is delivered and yet provide owners with the best net return on their investment. It comes as no surprise, therefore, that a well-chosen or poorly chosen lining system can have a huge impact on asset protection and attendant life cycle costs. With several new lining technologies having emerged in the last few years touted to address this productivity issue – such as polyurethanes, polyureas and a variety of hybrid technologies – the specification authority needs to understand the linings well, be cognizant of their case histories and know what are the appropriate tests to carry out on them in order to make a judicious lining selection. This paper will focus primarily on very fast cure solvent-free polyurethanes, polyureas and polyurethane/polyurea hybrid technologies; many of which are well suited to immersion service: the veritable Titans of the Abyss. The chemistry, cure mechanism, safety aspects, strengths and weaknesses of each technology will be discussed. Case histories will be provided for each technology
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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.
This paper will discuss various considerations that should be weighed when writing a specification to line a concrete tank, secondary containment or industrial floor.