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Evaluation Of The Use Of Painted And Unpainted Weathering Steel On Bridges
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Book Synopsis Evaluation of the Use of Painted and Unpainted Weathering Steel on Bridges by : Theodore Hopwood (II)
Download or read book Evaluation of the Use of Painted and Unpainted Weathering Steel on Bridges written by Theodore Hopwood (II) and published by . This book was released on 2016 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for the Use of Weathering Steel in Bridges by :
Download or read book Guidelines for the Use of Weathering Steel in Bridges written by and published by Transportation Research Board National Research. This book was released on 1989 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Unpainted Weathering Steel Bridges in Idaho by : Richard A. Jobes
Download or read book Evaluation of Unpainted Weathering Steel Bridges in Idaho written by Richard A. Jobes and published by . This book was released on 1996 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some states have reported problems with excessive corrosion of unpainted A588 weathering steel bridges. Considerable savings in initial and life cycle costs are anticipated when using weathering steel, but only if good long range performance is attained. The Idaho Transportation Department conducted its first in-depth study of a representative group of 12 weathering steel bridges to determine their present condition. Weathering steels develop a protective oxide coating that shields the underlying steel base from further corrosion when certain conditions are met. All weathering steel bridges in Idaho were identified and current inspection reports were reviewed. Data collected from the field inspections include: visual observations of the condition of the protective oxide coating (color, texture, adherence), conditions and details that cause corrosion problems, and plate thickness measurements with an ultrasonic gage. Samples of the oxide coating were tested for chlorides.
Book Synopsis Assessment of Weathering Steel Bridge Performance in Iowa and Development of Inspection and Maintenance Techniques by : Douglas D. Crampton
Download or read book Assessment of Weathering Steel Bridge Performance in Iowa and Development of Inspection and Maintenance Techniques written by Douglas D. Crampton and published by . This book was released on 2013 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weathering steel is commonly used as a cost-effective alternative for bridge superstructures, as the costs and environmental impacts associated with the maintenance/replacement of paint coatings are theoretically eliminated. The performance of weathering steel depends on the proper formation of a surface patina, which consists of a dense layer of corrosion product used to protect the steel from further atmospheric corrosion. The development of the weathering steel patina may be hindered by environmental factors such as humid environments, wetting/drying cycles, sheltering, exposure to de-icing chlorides, and design details that permit water to pond on steel surfaces. Weathering steel bridges constructed over or adjacent to other roadways could be subjected to sufficient salt spray that would impede the development of an adequate patina. Addressing areas of corrosion on a weathering steel bridge superstructure where a protective patina has not formed is often costly and negates the anticipated cost savings for this type of steel superstructure. Early detection of weathering steel corrosion is important to extending the service life of the bridge structure; however, written inspection procedures are not available for inspectors to evaluate the performance or quality of the patina. This project focused on the evaluation of weathering steel bridge structures, including possible methods to assess the quality of the weathering steel patina and to properly maintain the quality of the patina. The objectives of this project are summarized as follows: -- Identify weathering steel bridge structures that would be most vulnerable to chloride contamination, based on location, exposure, environment, and other factors. -- Identify locations on an individual weathering steel bridge structure that would be most susceptible to chloride contamination, such as below joints, splash/spray zones, and areas of ponding water or debris. -- Identify possible testing methods and/or inspection techniques for inspectors to evaluate the quality of the weathering steel patina at locations discussed above. -- Identify possible methods to measure and evaluate the level of chloride contamination at the locations discussed above. -- Evaluate the effectiveness of water washing on removing chlorides from the weathering steel patina. -- Develop a general prioritization for the washing of bridge structures based on the structure's location, environment, inspection observations, patina evaluation findings, and chloride test results.
Book Synopsis Current Status Report by : R. L. McCrum
Download or read book Current Status Report written by R. L. McCrum and published by . This book was released on 1985 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Bridges with A588 Weathering Steel for the Ohio Department of Transportation by : Wayne Lander
Download or read book Evaluation of Bridges with A588 Weathering Steel for the Ohio Department of Transportation written by Wayne Lander and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Maintenance coating of weathering steel by :
Download or read book Maintenance coating of weathering steel written by and published by . This book was released on 1992 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents findings of a survey and laboratory evaluation of materials and techniques for cleaning and painting chloride-contaminated weathering steel bridges. Laboratory techniques suitable for field usage were developed for assessing the conductivity and chloride level of prepared surfaces. The following cleaning techniques were evaluated for their effectiveness in removing chloride from corroded and pitted plates: air abrasive wet blasting, dry blasting (including alternative abrasives), dry blast and rinse sequences, pressurized water jetting, power tool cleaning, hand tool cleaning, and chemical strippers. Eight coating systems, including organic and inorganic zinc, high-solids epoxies, thermal spray zinc, oil/alkyd, and petroleum wax were selected for laboratory evaluations. They were applied over laboratory and bridge specimens of weathering steel having various levels of chloride contamination using four preparation techniques: wet and dry blasting, power tool and hand tool cleaning. The coatings were exposed to salt spray, immersion in deionized water, and a composite test incorporating ultraviolet radiation, condensation, and freeze-thaw conditions. Based on these tests, and other considerations, the four surface preparation techniques and the following eight systems were selected for multisite 5-year bridge and test fence evaluation: epoxy zinc-rich, urethane zinc-rich, epoxy mastic, thermal spray zinc, three inorganic zincs (conventional and low-VOC ethyl silicate, and water-borne alkali silicate) and oil-alkyd control. Preliminary guidelines were developed for weathering steel maintenance options of no painting, painting corroded areas only, and painting entire structure.
Author :United States. Federal Highway Administration. Offices of Research and Development Publisher : ISBN 13 : Total Pages :332 pages Book Rating :4.3/5 (91 download)
Book Synopsis Report No. FHWA-RD. by : United States. Federal Highway Administration. Offices of Research and Development
Download or read book Report No. FHWA-RD. written by United States. Federal Highway Administration. Offices of Research and Development and published by . This book was released on 1979 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Maintenance Coating of Weathering Steel by :
Download or read book Maintenance Coating of Weathering Steel written by and published by . This book was released on 1995 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a 4-year bridge and test fence evaluation of protective coatings for maintaining weathering steel bridges. The test specimens consisted of steel panels cut from existing aged weathering steel bridges, along with some new mill scale bearing weathering steel as a control. The condition of the specimens ranged from extensively pitted and corroded (from chloride exposure) to mildly corroded and non-pitted. Specimens were cut from angle irons, stiffeners, cover plates, and web areas of bridges. Three methods of surface preparation were used: dry abrasive blasting, wet abrasive blasting, and power tool cleaning using rotary peening and non-woven abrasive discs.
Book Synopsis Painting of Steel Bridges and Other Structures by : Clive H. Hare
Download or read book Painting of Steel Bridges and Other Structures written by Clive H. Hare and published by Van Nostrand Reinhold Company. This book was released on 1990 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: Good,No Highlights,No Markup,all pages are intact, Slight Shelfwear,may have the corners slightly dented, may have slight color changes/slightly damaged spine.
Book Synopsis Performance of Weathering Steel in Bridges by : Pedro Albrecht
Download or read book Performance of Weathering Steel in Bridges written by Pedro Albrecht and published by Transportation Research Board National Research. This book was released on 1984 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Iron and Steel Institute. Task Group on Weathering Steel Bridges Publisher : ISBN 13 : Total Pages :32 pages Book Rating :4.:/5 (2 download)
Book Synopsis Performance of Weathering Steel in Highway Bridges by : American Iron and Steel Institute. Task Group on Weathering Steel Bridges
Download or read book Performance of Weathering Steel in Highway Bridges written by American Iron and Steel Institute. Task Group on Weathering Steel Bridges and published by . This book was released on 1982 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidelines for the Use of Weathering Steel in Bridges by :
Download or read book Guidelines for the Use of Weathering Steel in Bridges written by and published by . This book was released on 1989 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Predicting and Prolonging the Service Life of Weathering Steel Highway Structures by : Neal Damgaard
Download or read book Predicting and Prolonging the Service Life of Weathering Steel Highway Structures written by Neal Damgaard and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Corrosion Control of Weathering Steel Bridges by : P. Albrecht
Download or read book Corrosion Control of Weathering Steel Bridges written by P. Albrecht and published by . This book was released on 1992 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bare exposed weathering steel is an economical alternative to ordinary painted steel if the weathering steel develops a protective oxide coating, meaning that the bridge need not be painted during its service life. To ensure satisfactory corrosion performance, engineers should follow the guidelines for the use of weathering steel in bridges described in this paper.
Book Synopsis Evaluation of Surface Modification Methods to Mitigate Rusting and Pitting in Weathering Steel Bridges by : A. Raman
Download or read book Evaluation of Surface Modification Methods to Mitigate Rusting and Pitting in Weathering Steel Bridges written by A. Raman and published by . This book was released on 1986 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Zinc-Plus-Paint System for Corrosion Protection of a Steel Bridge by : MM. Lwin
Download or read book Zinc-Plus-Paint System for Corrosion Protection of a Steel Bridge written by MM. Lwin and published by . This book was released on 1984 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Steel bridges are commonly protected from corrosion by the use of weathering steel (unpainted), paints, or zinc. The use of zinc and paints in combination has not received much attention in bridge construction. This paper describes the factors influencing the selection of a zinc-plus-paint system for corrosion protection of the structural low-alloy steel lift spans of the Hood Canal Floating Bridge. This bridge is situated in a marine environment and is designed to have a service life of 75 years.