Download or read book Pack Rust Identification and Mitigation Strategies for Steel Bridges written by Chintan Hitesh Patel and published by . This book was released on 2019-02 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Pack rust or crevice corrosion is a type of localized corrosion. When a metal is in contact with a metal, or even non-metal, the metal starts to corrode, and rust starts to pack in between the surfaces. When significant development of pack rust occurs, it can cause overstressing of bolts and rivets causing them to fail, and it can bend connecting plates and member elements thus reducing their buckling capacity. Thus it is important to mitigate the formation and growth of pack rust in bridges. This study was conducted to determine if pack rust occurs frequently and thereby may pose a problem in the state of Indiana. The study is divided into three primary tasks. The first part of the study involves understanding the parameters involved in the initiation process of crevice corrosion and post-initiation crevice corrosion process. The second part of the study involves reviewing existing mitigation strategies and repair procedures used by state DOTs. The third part of the study involves identifying steel bridges with pack rust in Indiana. Analyses were performed on the data collected from Indiana bridges that have pack rust. This involved finding the components and members of bridges which are most affected by pack rust and finding parameters which influence the formation of pack rust. Pack rust in the steel bridges were identified using the INDOT inspection reports available through BIAS system. The study revealed that good maintenance practices helped in reducing pack rust formation. The study identified locations on steel bridges which have a high probability towards pack rust formation. A mitigating strategy possessing qualities which can show promising results is identified.

Download or read book Corrosion Prevention for Extending the Service Life of Steel Bridges written by J. Peter Ault and published by . This book was released on 2018 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Maintenance Issues and Alternate Corrosion Protection Methods for Exposed Bridge Steel written by Tom W. Neal and published by Transportation Research Board. This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to state department of transportation (DOT) bridge maintenance engineers, coating specialists, chemists, and researchers. Manufacturers and suppliers of corrosion protection products and systems for exposed structural steel on existing bridges will also find it of interest. This synthesis describes current practice regarding maintenance and protection strategies for exposed structural steel on existing bridges. NCHRP Synthesis 251, Lead-Based Paint Removal for Steel Highway Bridges ( 1997), provides a complementary and more in-depth treatment of maintenance issues involving lead-based paint removal. This report of the Transportation Research Board defines the maintenance management systems and decision making criteria used by transportation agencies for maintaining exposed bridge steel. Material selection criteria, surface preparation and application practices, quality control and quality assurance programs, and funding mechanisms are discussed in detail. The impact of recent and proposed environmental and worker protection regulations on current practice is reported. Information for the synthesis was collected by surveying state transportation agencies and by conducting a literature search. Responses to the survey, Appendix C to this document, are published on the Internet as NCHRP Web Document 11.

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:

Download or read book FHWA Guide to Bridge Maintenance Painting written by William C. Johnson and published by . This book was released on 1987 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Guidelines for Evaluating Corrosion Effects in Existing Steel Bridges written by and published by Transportation Research Board National Research. This book was released on 1990 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmentally Acceptable Materials for the Corrosion Protection of Steel Bridges written by Robert A. Kogler and published by . This book was released on 1997 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recently promulgated environmental regulations concerning volatile organic compounds (VOC) and certain hazardous heavy metals have had a great impact on the bridge painting industry. As a response to these regulations, many of the major coating manufacturers now offer "environmentally acceptable" alternative coating systems to replace those traditionally used on bridge structures. The Federal Highway Administration sponsored a 7-year study to determine the relative corrosion control performance of these newly available coating systems. The most promising coating systems were selected for long-term field evaluation based on accelerated test performance. The long-term exposure testing was conducted for 5 years in three marine locations. Panels were exposed on two bridges, one in New Jersey and one in southern Louisiana. The third long-term exposure location was in Sea Isle City, New Jersey. Thirteen coating systems were included for long-term exposure testing.

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.

Download or read book Corrosion Behavior of Weathering Steel Bridges written by Amir H. Naeemi and published by . This book was released on 1984 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Steel bridges written by and published by . This book was released on with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Steel Bridges Material Matters written by Corus and published by . This book was released on 2010 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rust Prevention written by L. M. Stern and published by . This book was released on 2015-07-06 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Rust Prevention: A Treatise on the Preservation of Structural Steel Used in Bridges, Buildings, Fire Escapes, and Sheet Steel Used in Buildings, Metal Siding, Roofing, Smokestacks, Boiler Fronts, and Standpipes, Etc The use of steel has increased so rapidly within the past ten years that the keen competition in cost of production between the manufacturers thereof, has caused an enormous amount of this metal (particularly in Sheet Steel and Terne Plates for exterior use) to be thrown upon the market, of a quality unsatisfactory to those who have to shoulder the responsibility of its proper maintenance. Since the advent of the Bessemer process of making steel cheaply, the use of "charcoal iron" has comparatively decreased. Iron ore is very rarely reduced to pure metallic iron for commercial purposes, consequently the foreign substances which have not become eliminated from it constitutes part of the material entering into its transformation into steel. The progress of disintegration of steel exposed to reactionary agencies largely depends upon the quality of the metal, nickel steel, for example, being but very slightly susceptible to corrosive action, while Bessemer process steel being the reverse. The intention of this treatise is to deal briefly with the protection of the surface of the metal, so that corrosive action may be prevented from exterior sources, and in pursuing this course, we must of necessity carry on the discussion with the understanding that the steel or iron exposed to corrosion is of the quality which ordinarily comes from the mill, leaving the question of placing cheap and better steel upon the market for structural purposes to those who manufacture it. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Download or read book Mitigation Strategies for Early age Shrinkage Cracking in Bridge Decks written by Pizhong Qiao and published by . This book was released on 2010 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Early-age shrinkage cracking has been observed in many concrete bridge decks in Washington State and elsewhere around the U.S. The cracking increases the effects of freeze-thaw damage, spalling, and corrosion of steel reinforcement, thus resulting in premature deterioration and structural deficiency of the bridges. In this study, the main causes of the early-age cracking in the decks are identified, and concrete mix designs as a strategy to prevent or minimize the shrinkage cracking are evaluated. Different sources (eastern and western Washington) and sizes of aggregates are considered, and the effects of paste content, cementitious materials (cement, fly ash, silica fume, slag), and shrinkage reducing admixture (SRA) are evaluated. A series of fresh, mechanical and shrinkage property tests were performed for each concrete mix. The outcomes of this study identify optimum concrete mix designs as appropriate mitigation strategies to reduce or eliminate early-age shrinkage cracking and thus help minimize shrinkage cracking in the concrete bridge decks, potentially leading to longer service life.

Download or read book La vie religieuse et les temps actuels written by and published by . This book was released on 1964 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Guidelines for Evaluating Corrosion Effects in Existing Steel Bridges written by and published by . This book was released on 1990 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: