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Corrosion control guidelines that are applicable to existing atmospherically exposed structures made of conventionally reinforced concrete. Historical Document 2006
With coating and lining of concrete, while it may seem like a simple, novel task, there are always challenges. Even though concrete may be one of the largest construction materials used today, it is a complex structural matrix that can be ever changing even in a single placement. The need for coating concrete to either waterproof, or extend the life of the structure is not new to our industry.
Metal has been used in orthopaedic implants due to possessing excellent corrosion resistance and bio-compatibility. During recent years there has been serious concern using metal implants as release of metal ions from the implant can lead to genotoxicity and immunological effects with one of the principal factors that lead to this being the electrochemical reactions of the implant with salts proteins and other organic substances in the body. Continuous degradation also affects the lifetime of the implant; lifetime of the implant is a current priority due to the increased need for joint replacement in younger population.The focus of this research is to fully understand the surface/environment interactions that occur on CoCrMo alloys whilst in a protein-containing environment. Electrochemical techniques to measure corrosion rates and post –test assessment to assess mechanisms under a variety simulated body fluids have been used. X-Ray Photoelectron Spectroscopy (XPS) has been employed to analyse the surface chemistry of CoCrMo throughout the formation/dissolution of the organic/metallic tribo-film whilst In-Situ AFM has been utilised to monitor the build up of proteins in real time to determine how reactant films resulting from protein/surface interactions are formed. This study has shown that the presence of proteins has a substantial effect on the metal/oxide/electrolyte interface and this subsequently affects how the metal will behave in an implant environment
The effect of carbon steel coupon surface finishing processes on corrosion in a carbon dioxide environment with high and low salinity. The system was also tested with and without chemical inhibitors.
DOWNLOADABLE HISTORICAL DOCUMENT Maintenance of reinforced-concrete structures (site survey, structural survey, repair options) and corrosion-control techniques. Sources of additional information, bibliographic information, definitions.
Guidelines for establishing standard procedures for test panel selection, surface preparation, coating application, field exposure sites and conditions, and the grading and evaluation of panels. Historical Document 1993
Epoxy coatings provide excellent physical barrier to the steel reinforcing bars that are embedded in reinforced concrete and prevent chloride ions from reaching the bar surface under corrosive environment. Such protection primarily depends on the integrity of the coatings, which can often be damaged during construction. Repair of epoxy coatings can be time consuming and expensive. Therefore, it is important to determine a critical amount of damage that can be tolerated without compromising the capacity of the coatings to provide corrosion protection.