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Problem Solving Forum (17)


What causes bubbling or cratering of epoxy intermediate coat when applied over epoxy zinc-rich primer?


Animal fat in slaughterhouses often penetrates concrete surfaces. If the fat is not removed before the concrete is coated, the fat can cause the coating to fail. How do you identify and remove the contamination before coating the concrete?


What is the most important factor to determine in a failure investigation and why is it so?


What coating problems are likely in storage tanks that have dissimilar metal sides and floors?


How can it be determined if moisture within a CMU wall is causing repeated coating failure? If so, can the source of moisture entry be accurately identified for correction?


How do you protect concrete against microbiologically influenced corrosion?


How does rapid depressurization affect lining performance in vessels and line pipe, and how can you identify any failure that might result?


Does the presence of non-burst blisters in a coating system always mean that the coating requires replacement?


What is the Cold Wall Effect? Can it cause premature coating failure and, if so, how do I prevent it?


During a week of heavy rain, we painted the interior of a heated concrete building. The paint blistered badly a week later on the walls with an outside exposure. What’s the best way to remove the coating, prepare the surface, and recoat to prevent future blistering?


During a week of heavy rain, we painted the interior walls of a heated concrete building. On the interior of walls that had an outside exposure, the paint blistered badly a week after the rain subsided. Could the rain have caused the blistering and, if so, how?


What is the best way to repair localized coating breakdown on steel?


What causes blistering/crater formation in freshly applied polyurethane topcoats, and how can this be avoided?


How can it be determined if moisture within a CMU wall is causing repeated coating failure? If so, can the source of moisture entry be accurately identified for correction?


Under what conditions should small-diameter blisters (<1.5 inches) in a water tank lining be repaired/repainted? Should the blisters be broken and the substrate examined?


How does rapid depressurization affect lining performance in vessels and line pipe, and how can you identify any failure that might result?


What is the Cold Wall Effect? Can it cause premature coating failure and, if so, how do I prevent or minimize it?


 
 
   

Blastman Robotics Ltd.
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N.T. Ruddock Co.

Our Abrasives Hold Up Under Pressure

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NACE
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Park Derochie Coatings Ltd.
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Novatek Corporation
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Harsco
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PreTox Products - NexTec, Inc.
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CHLOR*RID International Inc.
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Modern Safety Techniques
Modern Safety Techniques

See our Low Temperature Catalyst for your CO removal needs. Help to provide your workers with safe, comfortable breathing air!


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.

 
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