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Epoxy linings have long been the standard generic resin type when specifiers are selecting products for lining new steel potable water tanks or rehabilitating existing steel potable water storage tanks in North America. The one exception to this rule has been the Canadian potable water storage market. In Canada many specifiers have recognized the benefits offered by 100% Solids Elastomeric Polyurethane linings for 25+ years with admirable results.
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This paper aims to present innovative solutions in which organic composite materials can be utilized for solving corrosion problems. Two solutions are presented for corrosion protection of flanged pipework flange face forming and flanged coupling external protection.
Zebra mussels were first introduced in the United States in the 1980’s into the Great Lakes. The migration of the mussels west prompted the US Bureau of Reclamation to examine technologies that might reduce their impact on water resources infrastructure. Many new materials and coating products have been developed to deter the attachment of mussels to infrastructure with new products being frequently introduced
For decades, waterproofing has been a major concern and a widely researched topic by building scientists and forensic engineers. Elastomeric coatings have been broadly used in different applications since the early 1950s. Manufacturer’s recommendations for the proper application of elastomeric coatings are often based on laboratory conditions (75oF and 50% RH) rather than extreme conditions posed by the real world. This study examines the failure of elastomeric roof coating exposed to conditions of high temperature (150°F) and water pooling caused by precipitation.
The protection of commercial buildings from the elements is a major function of the coatings used in new build and maintenance applications. Waterborne elastomeric acrylic coatings represent an important category of coatings used in both residential and commercial architectural painting.
Does the decreasing VOC levels and the increasing restrictions mean lower profits for the coating contractor? Not necessarily. Today, there are new very low VOC, and evenzero VOC, coatings that meet performance standards of the more traditional coatings withwhich we are accustom to using.
Corrosion mitigation by the use of barrier coatings relies on polymers and other substances to minimize the permeation of corrosive agents to the substrate. To achieve good barrier properties, most protective coatings rely on high crosslinking density and special fillers to increase the tortuosity of the film. However, this approach usually leads to highly viscous and brittle coatings that take too long to cure. In contrast, flexible and tough coatings typically do not have the requisite barrier properties for enhanced corrosion prevention.
The development of new elastomeric waterborne acrylic resins for use in surfacetolerant maintenance coatings will be described. Applied in thick films of up to 10 to 20 mils, these coatings are resistant to mudcracking, and form an excellent barrier coating for the protection of steel.