Case Histories

Water Main Breaks: Case Studies and Analysis

Water main breaks lead to extensive costs and make up a significant portion of municipal budgets due to repair costs, flood damage, loss of revenue for companies impacted, and the disruption to essential public services like health care or fire protection.

How NIST Handles Investigations of Structural Disasters

Tanya Brown-Giammanco, director of disaster and failure studies, explains NIST’s role in investigating structural disasters and why these probes can take years to complete.

U.K. Maritime Assets Receive Graphene-Enhanced Coatings

According to AGM, the Genable CX primer operates as a high-performance hybrid system that relies on graphene and aluminum chemistries to provide anticorrosion protection for offshore, marine, and other harsh environments.

Anodes Performance of Subsea Vibration Data Logger System

In deep-water applications in the Gulf of Mexico, vibration-induced fatigue issues often arise due to wave-induced motion, vessel-induced motion, vortex-induced vibration, and/or flow-induced vibration.

Susceptibility of Grouted Post-Tensioned Tendon Strands to Embrittlement

There is growing concern that prestressing steel strands within post-tensioned tendons could experience hydrogen embrittlement. One proposed source of hydrogen is galvanic coupling that may exist between the galvanized steel duct and the steel strands.

Michigan Works to Reinforce Bridges with Carbon Fiber Technology

Carbon fiber strands have a tensile strength comparable to steel, but they resist corrosion and require less maintenance over time. Longer service life is the major benefit, according to Michigan Department of Transportation officials.

Establishing the Chloride Threshold of Stainless Steel in Concrete

Stainless steels differ in terms of corrosion resistance, and the need to determine their corrosion resistance is essential. A standard test method that is reliable, reproducible, and quick is crucial.

Never Again: The Case of Cracking Paint on a Steel Cargo Container

This article focuses on several coating failures on the external surfaces of a carbon steel cargo container. Because this container was newly constructed, a fresh painting system was applied and touched up or spot repaired in some locations.

CO2 Corrosion of Pipe Fittings in Shale Production

This article presents two case studies of failed pipe fittings. A perforated tee and a pipe nipple retrieved from onshore shale production systems were analyzed to determine the mechanism(s) contributing to their corrosion and subsequent failure.

Duplex Zinc Coatings Offer Advantages to Commercial Fishing Boats

Reviewing data from case studies shows the effectiveness of duplex zinc coatings at lessening the effects of corrosion on steel used in commercial fishing boats. These mitigating effects are evident internally and externally, and above and below the waterline.

Why Corrosion Inspections Are Important to Community Safety

In this newly released AMPP webcast, inspection and policy experts explore the basics of the building inspection process; strategies to ensure buildings are protected; and important resources and tools. They also respond to viewer questions.

Effects of Simulated Marine Environments on Steel in Cracked Concrete

The scientists emphasize that improving the quality of concrete used in creating marine structures can be accomplished by making it less permeable and increasing the clear cover. When these steps are taken, the time to corrosion is much longer.

Report: U.S. State Officials Need More Clarity on Bridge Corrosion

Officials from some states told the U.S. Government Accountability Office that they use sealant on bridge decks to prevent corrosion. However, officials from another said they do not, because they do not know how effective it is.

Preventing Corrosion in Seawater-Fed Heat Exchangers

When designing a heat exchanger system, engineers must consider ways to control and mitigate the many different kinds of fouling. These control plans must be reviewed on a case-by-case basis for each unique environment.

Managing MIC During Hydrotesting and Wet Parking

Laboratory testing using biofilms can provide a reliable means to evaluate the potential for microbiologically influenced corrosion (MIC), and subsequently, to assess the effectiveness of biocides to inhibit biofilm growth and mitigate MIC during hydrotesting and wet parking.