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Although bridge construction extends back thousands of years, steel bridge painting is in its infancy. The first iron bridge was built in 1779, and the first steel was used in a bridge in 1828. Coated bridges from the 19th century survive, raising the question, “Can coatings protect steel bridges for the next hundred years?” The author discusses how to achieve 100 years of service life using current materials and offers recommendations for improving steel bridge painting.
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Like most manufacturing representatives, representatives of the paints and coatings manufacturing industry know less about architects/specifiers than what architects/specifiers know about the paints and coatings manufacturing industry. The purpose of this presentation is to provide the paints and coatings manufacturing industry with (a) insight into the mysterious world of architects/specifiers; and (b) to explain what architects/specifiers expect of manufacturing representatives.
Now that you as a specialty coating / lining contractor have joined the fast-growing technology of polyurea elastomeric coating & lining systems, what’s the next step? The polyurea technology has grown in use by significant volumes since the initial start in the early 1990’s. Applications include concrete coatings / linings, steel coatings, traffic deck systems and specialty coatings.
This study is a result of analyzing the data and statistics from the Brooklyn Bridge project collected during lead paint removal operation. The $508 million Brooklyn Bridge Contract 6, which is still ongoing, commenced in 2010 as a part of New York City Department of Transportation’s (NYCDOT) $2.6 billion East River Bridges Capital Program.
This paper is a “high temperature” sequel to previous investigations of four specialty inorganic coatings said to prevent corrosion under wet insulation conditions with temperature cycling both in the CUI range of -5°C to 175°C and up to ca 400°C.
Corrosion under insulation (CUI) is a costly and complex problem for industry to contend with successfully. This paper describes a suite of accelerated laboratory tests undertaken in part to evaluate some of the claims made for engineered coatings touted to possess high heat resistance to 400°C and simultaneous anticorrosion properties.
The purpose of this article is to attempt to provide the reader a basic understanding of the minimum standard in providing a safe work environment for their employees and the general public when using open-air Abrasive Blasting equipment.
Oil and gas operations worldwide are impacted by the presence of microorganisms. A variety of microorganisms can be found in the oilfield, dependent on the type of operation, geology, location, water source and water treatment utilized. Biocides are used in all stages of oil and gas development to control microorganisms and their detrimental impacts on production such as corrosion, biofouling, and souring. A wide number of biocides are used to control microorganisms, ranging from oxidizing biocides that react quickly but leave no residual activity, to preservatives which act slowly, but provide antimicrobial activity for weeks or months at a time. The spectrum of biocides used in oil and gas are covered by several excellent reviews and will not be detailed in this paper.
Humans have been building shelters since before recorded history. Throughout the ages mankind’s primary objective remains the same: to keep water out of the shelter. Water is the most aggressive combatant in the fight to protect our structures. Buildings leak for a variety of reasons.
Having been in this coatings world for over 30 years, I have seen many, many coating failures. I remember in my SSPC & NACE certification courses listening to the grizzled vets tell their “old war stories”. Now, I have my own, three of which I am going to share with you.
International standards, both ISO and ASTM, require that the attributes exhibited during an adhesion test are recorded as part of the results. What are these attributes, how should they be recorded and what value are they to the inspector and applicator in assessing the reason for failure? This paper looks at all these questions and asks should we be going further than we do in defining the mode of failure.
In our world of protective coatings, water usually seems to cause trouble. In relation to coating concrete - determining how wet the manhole structure is paramount in our struggle to rehabilitate these manholes. And we are not talking about the manholes used to contain water during heavy rains or floods, strictly the sanitary manholes. A few ASTM test methods are important tools.