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Showing 1 to 20 of 47 for “"STEEL CORROSION"”.
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Finite Element Modeling of Steel Corrosion in Concrete Structures
… is the possible occurrence of chloride- induced corrosion in prestressing strands and reinforcing bars, which may substantially impact the service life of such structures. Chloride- induced corrosion is a complicated electrochemical process which is affected by heat transfer, moisture flow and …
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Influence of Bridge Deck Concrete Parameters on the Reinforcing Steel Corrosion
Chloride induced corrosion of steel in concrete is one of the major forms of deterioration mechanisms found in reinforced concrete bridges. Early age corrosion damage reduces the lifespan of the bridges, which results in heavy economic losses. Research has been conducted to identify economic …
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Real-Time Monitoring of Short-Term Steel Corrosion in Cement and Soil
The corrosion process is defined as an electrochemical reaction that causes the deterioration and loss of material which adversely affects the critical properties of a material such as its microstructure, mechanical properties, and physical appearance. Corrosion of steel is of particular interest …
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The influence of binder type and cracking on reinforcing steel corrosion in concrete
… are the level of chlorides required to initiate corrosion and the subsequent rate of penetration of chloride ions through concrete. The primary focus of the current work is the study of how cement extenders impact on the corrosion characteristics of embedded steel in concrete. The investigation …
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Disposal of Bituminized and Other Low- and Medium-Level Wastes: Waste Characterization and the Retention of Migrating Radionuclides by Steel Corrosion Products
… systems, the sorption characteristics of steel corrosion products were investigated with a special emphasis on competitive sorption between Sr and Na. The corrosion rate of steel exposed to various environments was studied qualitatively and, with some systems, quantitatively. Traditional …
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Estudo do mecanismo de corrosão pelo CO2 em aço carbono via técnicas eletroquímicas em condições que incluem alta pressão e temperatura
CO2 corrosion is one of the major forms of deterioration of carbon steel in the oil and gas industry. The presence of the carbon dioxide accelerates the corrosion of carbon steel if compared to the medium containing strong acid with the same pH and this scenario makes even more relevant the …
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ΠΡΟΣΤΑΣΙΑ ΧΑΛΥΒΑ ΑΠΟ ΔΙΑΒΡΩΣΗ
IT HAS BEEN PROVEN THAT STEEL CORROSION FOLLOWS THE MODEL OF WAGNER (GALVANIC ELEMENT). FOR THE PROTECTION OF STEEL FROM CORROSION, ANTICORROSIVE PAINTS CONTAINING PIGMENTS WITH H- SEMICONDUCTIVE PROPERTIES HAVE BEEN USED FOR THE FIRST TIME, AND THUS HAVE DEVELOPED A NEW LINE OF ANTI-CORROSIVE …
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OXIDE FILM FORMATION AND CONVERSION MECHANISM ON CARBON STEEL UNDER MILDLY BASIC CONDITIONS
Understanding the factors that can affect the corrosion of steel pipes or containers is an important concern for nuclear power plants. Corrosion involves metal oxidation and dissolution, and hence, its kinetics depends on the aqueous redox condition and the physical and chemical nature of surface …
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Methods of remedial treatment for carbonation-induced corrosion of reinforced concrete
The importance of carbonation-induced corrosion has grown in recent years owing to the increasing age of reinforced concrete structures. Among the various remedial treatments for the alleviation of the deterioration process, applications of corrosion inhibitors and surface coatings are highlighted …
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Análise da Utilização de Produtos Ambientalmente Amigáveis como Inibidores de Corrosão em Ambientes Contendo CO2
Pipeline internal corrosion is one of the serious problems that occur in the oil and gas industry. The CO2 presence in produced fluids can cause corrosion of the material. The use of inhibitors is one of the most commonly used methods for corrosion control. However, most substances are …
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Modeling the Time-to Corrosion Cracking of the Cover Concrete in Chloride Contaminated Reinforced Concrete Structures
Significant factors on steel corrosion in chloride contaminated reinforced concrete and time-to-corrosion cracking were investigated in this study. Sixty specimens were designed with seven admixed chloride contents, three concrete cover depths, two reinforcing steel bar diameters, two exposure …
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Non-Destructive Bridge Deck Condition Assessment with a Probability-Based Deterioration Threshold
… e.g., cracking, delamination and reinforcing steel corrosion, have emerged. These techniques generate large amounts of data representing different underlying physics, (decibels for ground penetrating radar and volts for half-cell potential), making data interpretation and comparison difficult …
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ASSESSING CORROSION DAMAGE IN PRESTRESSED CONCRETE WITH ACOUSTIC EMISSION
… is employed to assess the presence and rate of steel corrosion evolving inside prestressing steel reinforced small-scale concrete specimens. Test setup consists of grade 6,000 psi concrete blocks with dimensions 4.5 x 4.5 x 20 inch (114 x 114 x 508 mm); a 30 inch (760 mm) long - ½ inch (13 mm) …
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Geotechnical Problems with Pyritic Rock and Soil
… oxidation include heave, concrete degradation, steel corrosion, environmental damage, acid mine drainage, and accelerated weathering of rock with concomitant effects on strength and stability. Affected disciplines include soil science, mining, engineering geology, geochemistry, environmental …
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Performance Evaluation of Epoxy-Coated Reinforcing Steel and Corrosion Inhibitors in a Simulated Concrete Pore Water Solution
Three epoxy-coated reinforcing steel (ECR) types removed from job sites, one shipped directly from the coater's plant, three commercial corrosion inhibitors, and one ECR plus a corrosion inhibitor were evaluated as reinforcing steel corrosion protection systems against chloride induced corrosion. …
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Evaluation of the effectiveness of deep polymer impregnation as a corrosion abatement technique for overlaid bridge decks
The focus of this research was primarily on corrosion of the reinforcing steel (rebars) in bridge decks. It has been estimated that over $20 billion is required to repair or rehabilitate corrosion induced deficient bridge decks and that the cost is rising at the rate of $0.5 billion annually. …
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Electrochemical and Modelling Studies on Simulated Spent Nuclear Fuel Corrosion under Permanent Waste Disposal Conditions
… fuel require a fundamental understanding of the corrosion of spent fuel in a failed waste container. The overall research goal of this project is to investigate the corrosion of simulated spent fuel under permanent disposal conditions, using both model simulations and experimental investigations. …
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GFRP reinforced concrete : environmental and movement characteristics
… conducted in order to come over the problem of corrosion in steel reinforced concrete. Consequently, methods such as cathodic protection, epoxy coatings, concrete additives, etc., have been tried. Unfortunately, non of these methods has totally solved the corrosion problem. The outstanding …
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Biocompatibility Investigations of Surgical Implant Alloys.
… used for surgical applications, 316L stainless steel (Fe-Cr-Ni, ASTMF138), Co-Cr-Mo (ASTM F75) and T1-6A1-4V (ASTM F136) were investigated to determine the elemental constituents released during corrosion and to determine the tissue responses elicited under in vitro and in vivo conditions. In …
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Adsorption at Treated Steel-Paint Interfaces
… to characterise surfaces relevant to offshore steel structures, to provide fundamental understanding of steel-paint binding that prolongs coating lifespans and corrosion inhibition. Particular steel surfaces are characterised before and after almandine garnet abrasive blasting. Significant …
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