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Author : Enrique Vaca-Cortés
Publisher :
ISBN 13 :
Total Pages : 1624 pages
Book Rating : 4.:/5 (428 download)
Download or read book Corrosion performance of epoxy-coated reinforcement in aggressive environments written by Enrique Vaca-Cortés and published by . This book was released on 1998 with total page 1624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Enrique Vaca-Cortés
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (481 download)
Download or read book Corrosion Performance of Epoxy-coated Reinforcement written by Enrique Vaca-Cortés and published by . This book was released on 1998 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenneth C. Clear
Publisher : Transportation Research Board
ISBN 13 : 9780309053709
Total Pages : 164 pages
Book Rating : 4.0/5 (537 download)
Download or read book Performance of Epoxy-coated Reinforcing Steel in Highway Bridges written by Kenneth C. Clear and published by Transportation Research Board. This book was released on 1995 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Khaled Z. Kahhaleh
Publisher :
ISBN 13 :
Total Pages : 207 pages
Book Rating : 4.:/5 (472 download)
Download or read book Corrosion Performance of Epoxy-coated Reinforcement-beam Tests written by Khaled Z. Kahhaleh and published by . This book was released on 1998 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard E. Weyers
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (72 download)
Download or read book Summary Report on the Performance of Epoxy-coated Reinforcing Steel in Virginia written by Richard E. Weyers and published by . This book was released on 2006 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 1992 to 2006, the Virginia Transportation Research Council and its contract researchers conducted a long-term systematic series of investigations to evaluate the corrosion protection effectiveness of epoxy-coated reinforcement (ECR) and to identify and recommend the best and most cost-effective corrosion protection system for Virginia bridge decks. This report summarizes this research and subsequent efforts to implement alternative reinforcement. The work was conducted, and is reported, in this general order: review of historical performance of ECR, ECR performance in solutions and concrete, and preliminary field investigations; investigation of field performance of bridge decks built with ECR; assessment of alternative corrosion protection methods; development of probabilistic service life models for bridge decks and laboratory assessment of ECR cores extracted from bridge decks to determine service life extension; efforts to implement alternative reinforcement. The series of studies demonstrated that the epoxy coating on ECR naturally degrades in the highly alkaline moist environment within concrete. The subsequent loss of bond, coupled with the inevitable flaws in the coating induced by construction, leads to an estimated service life benefit of ECR of as little as 3 to 5 years. Further, non-critical decks, beams, and substructure elements not exposed to marine environments, particularly on secondary and rural routes, can be cost-effectively constructed and maintained using low-permeability concrete and black reinforcing bar. However, because the Federal Highway Administration requires the use of corrosion-resistant reinforcement, and because ECR cannot provide adequate corrosion protection for structures designed for a 100-year+ service life as currently recommended by FHWA, the report recommends that the Virginia Department of Transportation amend its specifications regarding the use of ECR to require the use of corrosion-resistant metallic reinforcing bars such as MMFX2, stainless steel clad, and solid stainless steel.
Author : fib Fédération internationale du béton
Publisher : fib Fédération internationale du béton
ISBN 13 : 2883940894
Total Pages : 123 pages
Book Rating : 4.8/5 (839 download)
Download or read book Corrosion Protection of Reinforcing Steels written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2009-01-01 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has long been recognised that corrosion of steel is extremely costly and affects many industry sectors, including concrete construction. The cost of corrosion of steel reinforcement within concrete is estimated at many billions of dollars worldwide. The corrosion of steel reinforcement represents a deterioration of the steel which in turn detrimentally affects its performance and therefore that of the concrete element within which it has been cast. A great amount of work has been undertaken over the years concerning the prevention of corrosion of steel, including the application of coatings, which has included the study of the process of corrosion itself, the properties of reinforcing steels and their resistance to corrosion as well as the design of structures and the construction process. The objective of fib Bulletin 49 is to provide readers with an appreciation of the principles of corrosion of reinforcing steel embedded in concrete and to describe the behaviour of particular steels and their coatings as used to combat the effects of such corrosion. These include galvanised reinforcement, epoxy coated reinforcement, and stainless reinforcing steel. It also provides information on the relative costs of the materials and products which it covers. It does not deal with structure design or the process of construction or with the post-construction phase of structure management including repair. It is hoped that it will nevertheless increase the understanding of readers in the process of corrosion of reinforcing steels and the ability of key materials and processes to reduce its harmful effects.
Author : C. Andrade
Publisher : Thomas Telford
ISBN 13 : 9780727720214
Total Pages : 64 pages
Book Rating : 4.7/5 (22 download)
Download or read book Coating Protection for Reinforcement written by C. Andrade and published by Thomas Telford. This book was released on 1995 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides a technical survey of the most common coating protection systems for steel reinforcement, the use of which is rapidly increasing at present. The text also evaluates the practical effect of the systems and is the result of a research project conducted by a CEB task group which was specifically assembled to address the need for more information in this subject area.
Author : Khaled Z. Kahhaleh
Publisher :
ISBN 13 :
Total Pages : 165 pages
Book Rating : 4.:/5 (472 download)
Download or read book Corrosion Performance of Epoxy-coated Reinforcement-macrocell Tests written by Khaled Z. Kahhaleh and published by . This book was released on 1998 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (288 download)
Download or read book Studies on Damage and Corrosion Performance of Fabricated Epoxy-coated Reinforcement written by and published by . This book was released on 1993 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Seung-Kyoung Lee
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (1 download)
Download or read book Long-term Performance of Epoxy-coated Reinforcing Steel in Heavy Salt-contaminated Concrete written by Seung-Kyoung Lee and published by . This book was released on 2004 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhigang Zhang
Publisher : Frontiers Media SA
ISBN 13 : 2832500579
Total Pages : 303 pages
Book Rating : 4.8/5 (325 download)
Download or read book Advanced Concretes and Their Structural Applications written by Zhigang Zhang and published by Frontiers Media SA. This book was released on 2022-09-23 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 130 pages
Book Rating : 4.:/5 (614 download)
Download or read book Long-Term Performance of Epoxy-Coated Reinforcing Steel in Heavy Salt-Contaminated Concrete written by and published by . This book was released on 2004 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes results obtained from a long-term natural weathering exposure testing of the remaining 31 post-Southern Exposure (SE) test slabs that contained epoxy-coated reinforcing bar (ECR), black bars, and stainless steel bars and were not autopsied during the 1993-1998 Federal Highway Administration (FHWA) research project. The test slabs had been exposed to the very aggressive SE test, which involved alternating wetting with 15 weight percent NaCl solution and air drying cycles for 96 weeks. The test results confirmed that the black bars produced the highest mean macrocell current density (least corrosion resistant) among various combinations of test variables regardless of slab configuration and the stainless steel bars exhibited negligible mean macrocell current density. The performance of straight top-mat ECRs varied from 7 to 40 percent of the highest black bar case, as measured by macrocell current density, depending on the size of the initial coating damage and the type of bar in the bottom mat. ECR used in the top mat alone reduced the corrosion susceptibility to at least 50 percent of the black bar case, even when it contained coating damage and was connected to the black bar bottom mat. If straight ECRs in the top mat were connected to ECRs in the bottom mat, the mean macrocell current density was no greater than two percent of the highest black bar case and approached the corrosion resistant level of stainless steel reinforcement. Autopsy of ECR slabs exhibiting negligible macrocell current density revealed excellent condition with no sign of corrosion. However, ECRs exhibiting high macrocell current densities showed coating deterioration and exhibited numerous hairline cracks and/or blisters in conjunction with reduced adhesion, coating disbondment (permanent loss of adhesion) and underlying steel corrosion. The test results of present and the earlier FHWA studies indicate that adhesion appeared to be a poor indicator of long-term performance of the coated bars in chloride contaminated concrete and it is concluded that there is no direct relationship between loss of adhesion and the effectiveness of ECR to mitigate corrosion.
Author : David B. McDonald
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.3/5 (555 download)
Download or read book Corrosion Evaluation of Epoxy-coated, Metallic-clad and Solid Metallic Reinforcing Bars in Concrete written by David B. McDonald and published by . This book was released on 1998 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the work conducted from 1993 to 1998 to develop cost-effective "new breeds" of organic, inorganic, ceramic and metallic coatings, as well as metallic alloys that can be utilized on or as reinforcement for embedment in portland cement concrete. As part of the study, 12 different bar types were tested in concrete: black bars, 3 bendable and 3 nonbendable epoxies, Type 304 and Type 316 stainless steel, copper-clad, galvanized and spray metallic-clad reinforcing. Measurements of macrocell voltages, half-cell potentials, electrochemical impedance spectroscopy, linear polarization and mat-to-mat resistances were used in conjunction with visual observations to determine the effectiveness of each system.
Author : Wioleta A. Pyć
Publisher :
ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (1 download)
Download or read book Corrosion Protection Performance of Corrosion Inhibitors and Epoxy-coated Reinforcing Steel in a Simulated Concrete Pore Water Solution written by Wioleta A. Pyć and published by . This book was released on 1998 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: We used a simulated concrete pore water solution to evaluate the corrosion protection performance of concrete corrosion-inhibiting admixtures and epoxy-coated reinforcing bars (ECR). We evaluated three commercial corrosion inhibitors, ECR from three coaters removed from job sites, one ECR shipped directly from the coater's plant, and one ECR removed from a job site plus a corrosion inhibitor. The corrosion inhibitors were calcium nitrite, an aqueous mixture of esters and amines, and a mixture of alcohol and amine. Corrosion protection performance was based on the amount of visually observed corroded surface area. For bare steel tested with and without corrosion inhibitors, corrosion increased with increasing chloride concentration, and specimens saturated with oxygen were more corroded than specimens saturated with breathing air. The amount of corrosion over the 90-day test period was controlled by the amount of oxygen in solution at the higher chloride concentrations. The ester-amine and alcohol-amine did not inhibit corrosion. Calcium nitrite inhibited corrosion at all levels of chloride concentration. For ECR, corrosion occurred both at sites where the coating was damaged and underneath the coating. Coating debondment was greatest in pore water solutions containing chloride. The least coating debondment and corrosion occurred in the solution containing calcium nitrite and the ECR shipped directly from the manufacturer. Coating debondment and corrosion of ECR are directly related to the amount of damage as holes; mashed, dented, and cracked areas; and holidays. The researchers recommend that the developed test method be adopted as a standard test for concrete corrosion inhibitors and that calcium nitrite remain the only concrete corrosion inhibitor approved for use in Virginia.
Author : Brian Cherry
Publisher : CRC Press
ISBN 13 : 100035296X
Total Pages : 403 pages
Book Rating : 4.0/5 (3 download)
Download or read book Corrosion and Protection of Reinforced Concrete written by Brian Cherry and published by CRC Press. This book was released on 2021-03-16 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reinforced concrete is the most widely used construction material in the world, and extended performance is rightly expected. Many structures are in aggressive environments, of critical importance and may be irreplaceable, so repair and protection are vital. This book surveys deterioration of concrete, particularly corrosion of the steel reinforcement, and the various chemical, biological, physical and mechanical causes of deterioration. It outlines condition survey and diagnosis techniques by on-site and laboratory measurements. It sets out mechanical methods of protection and repair, such as patching, inhibitors, coatings, penetrants and structural strengthening as well as cathodic protection and other electrochemical methods. This book also gives guidance on preventative measures including concrete technology and construction considerations, coatings and penetrants, alternate reinforcement, permanent corrosion monitoring and durability planning aspects. Asset managers, port engineers, bridge maintenance managers, building managers, heritage structure engineers, plant engineers, consulting engineers, architects, specialist contractors and construction material suppliers who have the task of resolving problems of corrosion of steel reinforced concrete elements will find this book an extremely useful resource. It will also be a valuable reference for students at postgraduate level. Authors The late Professor Brian Cherry of Monash University, Melbourne, Australia was one of the world’s leading corrosion science and engineering educators and researchers. Warren Green of Vinsi Partners, Sydney, Australia is a corrosion engineer and materials scientist. He is also an Adjunct Associate Professor.
Author : fib Fédération internationale du béton
Publisher : fib Fédération internationale du béton
ISBN 13 : 9782883940505
Total Pages : 448 pages
Book Rating : 4.9/5 (45 download)
Download or read book Bond of Reinforcement in Concrete written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2000-01-01 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In 1993, the CEB Commission 2 Material and Behavior Modelling established the Task Group 2.5 Bond Models. It's terms of reference were ... to write a state-of-art report concerning bond of reinforcement in concrete and later recommend how the knowledge could be applied in practice (Model Code like text proposal)... {This work} covers the first part ... the state-of-art report."--Pref.
Author : José Antonio Pincheira
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (31 download)
Download or read book Corrosion Protection Performance of Epoxy-coated Reinforcing Bars written by José Antonio Pincheira and published by . This book was released on 2008 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main purpose of this investigation was to conduct an in-depth study to determine the level of corrosion protection offered by epoxy-coated bars in four bridge decks in the Minneapolis/St. Paul, MN metropolitan area. The bridges studied were built between 1973 and 1978 and all decks had a top mat built with epoxy-coated bars. The bottom mat was epoxy-coated in only one deck whereas black steel was used for the bottom mat in the other bridges. These bridges had been assessed in 1996 and thus, the present study is a follow up investigation to obtain data and assess the field performance of epoxy-coated bars over a period of approximately 30 years. The investigation included field inspection and surveys of the decks, as well as laboratory tests of concrete core and bar samples. After 30 years of service, the overall condition of the epoxy-coated bars is good to very good, with no or modest levels of corrosion activity. In only one bridge, corrosion activity appears to be moderate to severe. The majority of corroded bars were found near joints or at crack locations. The amount of delamination in all decks is very low.
