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JPCL January 2018

 
JPCL January 2018


View the Digital Edition of this Issue

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


   
Advertisements
 
Carboline Company
 
New product: Carbozinc® 608 HB
 
Introducing a new high build zinc-rich primer that can save you time and money by eliminating the epoxy intermediate coat!
 

 
NLB Corporation
 
NLB Sure Shroud: Greater Protection and Flexibility
 
NLB’s Sure Shroud’s lighter weight and flexibility reduces operator fatigue and offers unmatched protection against high pressure hose ruptures. 10k to 40k psi rated.
 

 
Mitsubishi Gas Chemical America
 
Performance Amine 1,3-BAC
 
A highly reactive cycloaliphatic diamine offering superior performance. Reasonable cost and curing efficacy makes it suitable for all types of epoxy resin applications.
 

 
KTA-Tator, Inc. - Corporate Office
 
KTA-TATOR LABORATORY SERVICES
 
• Coating failure analysis
• Independent testing
• Accelerated weathering testing
• Abrasives Testing
• Oil & Gas Material Qualification
• A2LA Certificate #2455.01
Contact: Rob Leggat
at 412-788-1300 x176
 

 
SAFE Systems, Inc.
 
Custom blast rooms
by SAFE Systems
 
Don't waste time and money "making do" with a "standard" design. Let us work with you to design and build the system that best fits your requirements.
Call 1-800-634-7278
 

 
DeFelsko Corporation
 
PosiTector SST Soluble Salt Tester
 
Measures the concentration of soluble salts on metal surfaces. Use with all Bresle patch types including the reusable, adhesive-free PosiPatch.
 

 
Graco Inc.
 
Graco EcoQuip 2: Experience the Difference
 
While others claim their equipment is the same, none of them compare to Graco’s EcoQuip 2™ Vapor Abrasive® blasting line. Visit graco.com/ecoquip to learn more.
 

 
SABRE Autonomous Solutions
 
Repeatability
 
The ALPHA1 provides reliable results consistently allowing you to cost your next job with confidence.
 

 
Modern Safety Techniques
 
Modern Safety Techniques
 
With our unique LTCat, we can help to provide clean, safe breathing air to your workers. Take a look at our Breathing Air Systems, we supply at least twice as much charcoal as our competitors! Modern
 

 
Blastox/The TDJ Group, Inc.
 
Blastox® - One Step Lead Abatement
 
Sandblast additive delivered to jobsite pre-blended to eliminate hazardous abrasive wastes. Why mix, meter or apply at the job-site? Blast with ease and
Let your painters paint!
1(800)-252-7869
 

 
 
 
 

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