Download or read book Evaluation of Bridge Deck Repair and Protective Systems written by Lowell B. Steere and published by . This book was released on 1980 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Bridge Deck Repair and Protective Systems written by Herbert N. Swanson and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measures to reduce or eliminate bridge deck deterioration by the use of various protective systems have been the subject of a series of reports begun in 1976. This report presents current observations of latex modified deck topping concrete protective systems. Latex modified concrete topping has not provided long-term protection for the ten structures under evaluation in Colorado, Cost comparison are made between repair with latex modified concrete and deck replacement. Over a 40-year period, replacement costs are slightly less than rehabilitation costs. Greater control of the curing of deck topping material may reduce shrinkage cracking. Nightime paving, cooler calmer weather and higher humidity would increase the probability of success on latex modified concrete to rehabilitation projects. Asphalt membrane and asphalt overlay are also suggested to increase the probability of success. Implementation: Latex modified concrete is not recommended as a rehabilitation option in Colorado at this time. Further evaluation of two structures using latex modified concrete under nigh paving and tight control of curing methods is currently underway on I-25 North of Longmont.

Download or read book Evaluation of Bridge Deck Protective Systems written by Carey L. Younger and published by . This book was released on 1989 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Deck Repair and Protective Systems written by Herbert N. Swanson and published by . This book was released on 1984 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Evaluation Repair and Rehabilitation written by A.S. Nowak and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluation, repair and rehabilitation of bridges are increasingly important topics in the effort to deal with the deteriorating infrastructure. For example, in the United States about 40 percent of the nation's 570,000 bridges are classified, according to the Federal Highway Administra tion's (FHW A) criteria, as deficient and in need of rehabilitation and replacement. In other countries the situation is similar. FHW A estimates the cost of a bridge replacement and reha bilitation program at 50 billion dollars. The major factors that have contributed to the present situation are: the age, inadequate maintenance, increasing load spectra and environmental contamination. The deficient bridges are posted, repaired or replaced. The disposition of bridges involves clear economical and safety implications. To avoid high costs of replacement or repair, the evaluation must accurately reveal the present load carrying capacity of the struc ture and predict loads and any further changes in the capacity (deterioration) in the applicable time span. Accuracy of bridge evaluation can be improved by using the recent developments in bridge diagnostics, structural tests, material tests, structural analysis and probabilistic methods. There is a need for an international exchange of advanced experience to increase the research effi ciency. The Workshop is organized on the premise that the exchange of existing American and European experience in the area of bridge evaluation, repair and rehabilitation is beneficial for both parties involved.

Download or read book Evaluation of Several Bridge Deck Protective Systems written by Richard M. Weed and published by . This book was released on 1980 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Evaluation of Bridge Deck Protection Systems written by Minnesota. Department of Transportation. Research and Standards Section and published by . This book was released on 1977 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solving Corrosion Problems of Bridge Surfaces Could Save Billions written by United States. General Accounting Office and published by . This book was released on 1979 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Deck Deterioration and Restoration written by and published by . This book was released on 1982 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation Findings The Segmental Concrete Channel Bridge System written by Highway Innovative Technology Evaluation Center (U.S.) and published by ASCE Publications. This book was released on 1996-01-01 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prepared by the Highway Innovative Technology Evaluation Center, a CERF Service Center. This report presents the findings of a HITEC evaluation of the Channel Bridge System, manufactured by J. Muller International, which is a precase segmental overpass bridge system intended for use in bridge replacement projects or new construction. This report contains the first component of the evaluation plan, the technical analyses and evaluation of design attributes and performance history, with emphasis on the unique aspects of this technology.

Download or read book Evaluation of Bridge Deck Wearing Surfaces and Protective Systems written by Maine. Department of Transportation. Technical Services Division. Research and Development Section and published by . This book was released on 1992 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Deck Protective Systems written by and published by . This book was released on 1988 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Bridge Deck Protective Strategies written by Khossrow Babaei and published by Transportation Research Board National Research. This book was released on 1987 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Extended Evaluation of Selected Bridge Deck Protection Systems written by Mark G. Hagen and published by . This book was released on 1995 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 1976-1981 the Minnesota Department of Transportation (Mn/DOT) conducted a research study to evaluate several new types of bridge deck protective systems in an effort to reduce the extent of reinforcing steel corrosion. These systems included membranes with bituminous overlays, modified concrete overlays, and coated rebars. When the study concluded, it was felt that a long term study was needed to provide a better indication of service life. Two decks from each system type which appeared promising were selected for extended testing. This extended study continued the evaluation program through 1990

Download or read book Extended Evaluation of Selected Experimental Bridge Deck Protective Systems written by M. G. Hagen and published by . This book was released on 1988 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Service Life Prediction of Protective Systems for Concrete Bridge Decks in Alberta written by and published by . This book was released on 1994 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reliable life cycle calculations for bridge maintenance management depends upon having reasonable alternative choices for deck repair or replacement, accurate costs for those alternative choices, and accurate service life predictions for each of the alternate choices. The objective of this study was to develop a series of tools, based on existing performance condition surveys, that can be used to better establish the expected and remaining service life of protective systems during life cycle evaluations. The study has identified two deterioration mechanisms which affect service life: 1) delamination of the concrete deck resulting from corrosion of reinforcement and 2) debonding of a concrete overlay. These deterioration mechanisms are described, influencing factors discussed and various definitions presented. The study develops a relationship between the extent of early corrosion induced deterioration and area of deck that is actively corroding, as measured by half cell potentials. A time relationship for the area of deck that is actively corroding is then presented, which permits the user to establish service life. The study also presents an evaluation of expected time to develop overlay debonding based on various types of bridge structures.

Download or read book Performance Evaluation of Waterproofing Membrane Protective Systems for Concrete Bridge Decks written by Khossrow Babaei and published by . This book was released on 1983 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study develops a methodology for field appraisal and evaluates the effectiveness of three selected waterproofing membrane installations presently in service in the State of Washington. Based on the information obtained, none of the test installations had completely sealed the passage of salt into the concrete decks. "Active" and "uncertain" corrosion potentials existed at the rehabilitated portions; however, a decrease in corrosion activity since the time of rehabilitation was noted. Concrete deterioration after rehabilitation has occurred mainly within the boundaries of the repair work and original conrete, and it is more evident in areas with a shallower rebar depth. It is recommended that future research include a greater number of bridge decks. In addition, service life performance data should be obtained through long-range monitoring of the installations.