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Bedeviled Bridges: An Answer to a National Scandal

Bedeviled Bridges: An Answer to a National Scandal
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In some quarters of society there is a public outcry regarding the significant corrosion, coatings deterioration and safety concerns associated with North American bridges. Against this backdrop, this paper describes the application more than 20 years ago of an innovative coating system for the rehabilitation and lead abatement of a major truss bridge superstructure in Alberta, Canada. 

Product Number: 51217-062-SG
Author: Mike O’Donoghue, Vijay Datta, Glenn Hollins
Publication Date: 2017
Industries: Highways & Bridges , Coatings
$0.00
$20.00
$20.00

In some quarters of society there is a public outcry regarding the significant corrosion, coatings deterioration and safety concerns associated with North American bridges. Against this backdrop, this paper describes the application more than 20 years ago of an innovative coating system for the rehabilitation and lead abatement of a major truss bridge superstructure in Alberta, Canada. Two decades ago, a one coat HRCSA (high ratio calcium sulfonate alkyd) coating system was deemed best in-test for the superstructure and crevice corroded joints of the landmark High Level Bridge. The high performance coating was subsequently applied under the direction, and inspection, of one of the authors (GH) in 1995, as he was the owners representative during the evaluation and construction phases. Outlining the current inspection findings of the coating system on the bridge, details are provided not only as to the current coating system condition, but the specific chemistry of HRCSA technology that indicated years ago that it should have been, and indeed has since proven to be, “The Answer” for many bridge rehabilitation coatings projects and “The Answer” today for what some describe today as a “National Scandal”.

In some quarters of society there is a public outcry regarding the significant corrosion, coatings deterioration and safety concerns associated with North American bridges. Against this backdrop, this paper describes the application more than 20 years ago of an innovative coating system for the rehabilitation and lead abatement of a major truss bridge superstructure in Alberta, Canada. Two decades ago, a one coat HRCSA (high ratio calcium sulfonate alkyd) coating system was deemed best in-test for the superstructure and crevice corroded joints of the landmark High Level Bridge. The high performance coating was subsequently applied under the direction, and inspection, of one of the authors (GH) in 1995, as he was the owners representative during the evaluation and construction phases. Outlining the current inspection findings of the coating system on the bridge, details are provided not only as to the current coating system condition, but the specific chemistry of HRCSA technology that indicated years ago that it should have been, and indeed has since proven to be, “The Answer” for many bridge rehabilitation coatings projects and “The Answer” today for what some describe today as a “National Scandal”.

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