Coating Failure

coating failure disboding

Investigating Coating Failure: Disbonding of an Overcoat

THE SUBJECT Two steel 250-plus-ton, fixed, gantry crane structures were overcoated as part of a 2014 coating remediation project. The cranes are located in the Northeastern U.S. and were erected in 1956. They reportedly still had the original coating system when the remediation was performed. Project specifications called for spot repairs at corroded areas and […]

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coating failure

Collecting Evidence at the Scene of the Crime: Sampling Techniques During a Coating Failure Investigation

During any crime scene investigation, there is the collection of samples (evidence) that are subsequently analyzed in a forensic laboratory and used to help solve the crime. This process is very similar (albeit a lot less serious) when a coating fails prematurely. Samples of failing and non-failing coating are gathered as evidence, along with a

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Coating Failures/Disputes: Preparing for Litigation

Failure analysis of coatings and linings often involves systematic analysis and complex engineering logic. There are also many human factors involved. Each coating application involves at least three distinct parties often with different motives and opinions. These parties include the owner of the structure or facility that was painted, the contractor firm that prepared the

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moisture-sensitive coating layers

How Many Times Can I Repaint the Exterior of My Building?

In the September 2014 issue of Durability + Design, we described the laboratory test methods used to determine the water vapor permeance of coatings, as well as the importance of knowing the permeance of the interior and exterior coatings used on building walls. As seen in Durability & Design, January 2017 “Calculated Impact: Can WUFI

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bolted bridge connections

Preventing Coating Problems and Failures on Bolted Bridge Connections – F-Files: Mechanisms of Failure

Rather than describe a failure that has already occurred, this article addresses key steps to follow when painting bolted connections in order to prevent failures from occurring by focusing on surface preparation and painting practices that have been used successfully on bolted bridge connections such as splice plates and gusset connections for new construction projects

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specification

Contradictory Information in a Project Specification – F-Files: Mechanisms of Failure

The wastewater industry poses some of the most significant corrosion protection challenges for industrial protective coatings. In this case study, coating failure in the form of peeling and delamination (on concrete) and blistering (on steel) was observed on the interior of a digester at a wastewater treatment facility after only five years of service. Removal

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coating failure analysis

Coating Failure Analysis Series – Part 6 – Laboratory Forensic Analysis

This is a six-part video series that demonstrates the field and laboratory methods that were used to determine why a new coating system applied to a previously painted concrete floor had failed. Each part is standalone, addressing a different aspect of the evaluation, but when viewed in order, they present a systematic step-by-step process for

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field microscopic examination

Coating Failure Analysis Learning Series – Part 5 – Field Microscopic Examination

Welcome to the KTA Coating Failure Analysis Video Learning Series! This is a six-part video series that demonstrates the field and laboratory methods that were used to determine why a new coating system applied to a previously painted concrete floor had failed. Each part is standalone, addressing a different aspect of the evaluation, but when viewed

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tooke gage

Coating Failure Analysis Learning Series – Part 3 – Tooke Gage

Welcome to the KTA Coating Failure Analysis Video Learning Series! This is a six-part video series that demonstrates the field and laboratory methods that were used to determine why a new coating system applied to a previously painted concrete floor had failed. Each part is standalone, addressing a different aspect of the evaluation, but when viewed

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