JPCL January 2018

 
JPCL January 2018


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Preventing Crevice Corrosion in New and Existing Steel Structures

by Eric Shoyer and Pete Ault, Elzly Technology Corporation; and Peter McDonagh and Brian Prazenka, Triborough Bridge and Tunnel Authority

Bolted joints in steel structures contain multiple crevices between the bolted members and the fasteners that are typically more susceptible to corrosion than flat surfaces, and difficult to properly coat. This article will evaluate the effectiveness of various coating practices at mitigating corrosion around these joints.


On the Corrosion Effects of Reblasted Steel

by Carl Reed and Sarah Olthof, GPI Laboratories, Inc.; and Kat Coronado and Heather Cui, International Paint, LLC

It is not uncommon during the course of abrasive-blast surface preparation to overblast and create a blast profile that is over and above the defined specification. This article describes a study that takes a closer look at the topography of a surface (before and after reblasting an over-blasted profile) and determines how this topography might affect the corrosion protection of a coating.


Thin-Film Coatings for Protecting Reinforced Concrete Bridge Elements

by Bobby Meade, Greenman Pedersen, Inc.; Derrick Castle, The Sherwin-Williams Company; and Theodore Hopwood II and Sudhir Palle, University Of Kentucky

Steel reinforced concrete bridge components are deteriorating prematurely, especially in marine and snow/ice zones of the U.S. The primary cause of this deterioration is chloride intrusion into the concrete. The authors discuss research that has shown that penetrating sealers can provide some protection to the concrete but are not as effective as thin-film coatings in retarding chloride intrusion.


Plus...


SSPC On the Front Line

Introducing Two New Training Courses at SSPC 2018


Top of the News


Coatings Conversation


Focus On: FRPs for Bridges

by Gregg Blaszak, P.E., Milliken Infrastructure Solutions, LLC


   
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