Search Results for coating

...Abstract Coating system of a cargo container belonging to a high-profile cargo company failed terribly during service at the humid south gulf coastline. The failure occurred during the summer of 2020 after only 8 months of service. The container had an acknowledged life expectancy of 20 years...

...Abstract Surface coatings are a cost-effective method for protecting metals surface and is well known for versatility, ease of maintenance, and various compositions specific to service involved. In this case study, a detailed investigation was conducted to discover the reason behind the failure...

...Abstract This paper presents the diagnostic work undertaken to determine the cause of failing coating and spalling block on the exterior of a commercial building in northern Illinois. The field assessment methods used to diagnose the problems including non-destructive and destructive methods...

... and delamination of the flooring coating. A local high school had a lot of pride in their sports teams and facilities, but the basketball court wasn’t living up to the administration’s standard. They were frustrated with the results of recent repairs, and they needed a path to success. The basketball court floor...

...The coatings of a newly constructed concrete trench were already peeling and blistering. A proof of concept got to the heart of the problem and provided remediation. The failure investigation started with an email and ended with blisters the size of basketballs. When the blisters popped, water...

...Three years after work finished, the coatings on the steel substrates on a wastewater clarifier started blistering and rusting. Sometimes, the culprit in a coating failure is something that you assume isn’t there. Sometimes, the culprit in a coating failure is something that you assume isn’t...

...Why did the paint peel off the pedestrian bridge following a complete recoat? Read on about what went wrong. A coating contractor was hired to apply a three-coat system to the structural steel of a pedestrian bridge in a prominent location in a highly industrialized mid-sized city. The old alkyd...

...Delamination coatings on a tug’s freeboard didn’t dazzle the client. Find out what the investigation uncovered. Premature coating failures usually manifest at some point before they would be expected — that’s the norm; however, it’s shocking when the failure is almost immediate. Such was the case...

...The bulkhead on a new generation of ships received a new coating system and the results were anything but flawless. In 2012, the construction of the next generation of ships came to a fast and complete stop after the client discovered that the recently applied fireproof coating had failed. Although...

...Essential coating properties for pipeline integrity maintenance. Coatings in conjunction with CP provide the primary means of protecting buried pipelines from corrosion attack, mechanical damage, and geotechnical threats, while maintaining the integrity of the pipeline system in service...

... inspectors. Second, by using remote thermal infrared (IR) and multispectral imaging sensors, they can detect anomalies that can be indicative of corrosion—even without removing the insulation or the existing coating. The concept of using UAVs for inspections is of particular interest to the maritime industry...

...Evolution of Coating Technology Before moving into more technical content, it is worth understanding the difference between two concepts that are often considered as one but do have different meanings, i.e., paint and coating. A paint is defined as any liquid material containing only drying oil...

...Coating Failure Modes and Mechanisms Pipeline coatings can fail at various stages: In manufacturing, application, transportation, or pipeline construction and servicing. While this book focuses on coating failures in field use, the mechanisms causing coating failure at other stages are briefly...

... of factors: Environmental (coating, CP, temperature, soil), stress (hoop stress, longitudinal and/or residual stress, pressure fluctuations), and material (steel grade and chemistry, microstructure, metallurgical defects, surface roughness, welds) [ Cheng, 2013 ]. In Canada, over 70% of pipeline SCC...

...Introduction Testing a coating system to determine how it will perform in a certain environment is a critical part of coating selection. Many industry standards exist for testing coatings. NACE International has many well-written standards that are a good start. The International Organization...

...Corrosion of metals is electrochemical in nature [ Stansbury and Buchanan, 2000 ]. Corrosion scientists and engineers have used various electrochemical measurement techniques to investigate corrosion phenomena, including corrosion of metal beneath coatings or at coating defects, to obtain...

...After selection of a coating for a specific environment and before application, a set of concise and thorough specifications must be written. When a series of candidate coating systems emerges, laboratory screening tests should be conducted to rank the candidate systems for potential suitability...

...Preventing Coating Failure Due to Cracks in Concrete. This appendix acquaints the reader with common causes of cracking in concrete substrates and explains when cracking in concrete slated to be coated is expected to propagate through or “reflect” in the coating. Major causes of cracking...