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Experimental Evaluation And Implementation Of Post Tensioning In Concrete Bridge Decks
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Book Synopsis Experimental Evaluation and Implementation of Post-Tensioning in Concrete Bridge Decks by : Julio A. Ramirez
Download or read book Experimental Evaluation and Implementation of Post-Tensioning in Concrete Bridge Decks written by Julio A. Ramirez and published by . This book was released on 2010-11-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Evaluation of Full Depth Precast/prestressed Concrete Bridge Deck Panels by : Mohsen A. Issa
Download or read book Experimental Evaluation of Full Depth Precast/prestressed Concrete Bridge Deck Panels written by Mohsen A. Issa and published by . This book was released on 2002 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: A literature review concerning the objectives of the project was completed. A significant number of published papers, reports, etc., were examined to determine the effectiveness of full depth precast panels for bridge deck replacement. A detailed description of the experimental methodology was developed which includes design and fabrication of the panels and assembly of the bridge. The design and construction process was carried out in cooperation with the project Technical Review Panel. The major components of the bridge deck system were investigated. This includes the transverse joints and the different materials within the joint as well as composite action. The materials investigated within the joint were polymer concrete, non-shrink grout, and set-45 for the transverse joint. The transverse joints were subjected to direct shear tests, direct tension tests, and flexure tests. These tests exhibited the excellent behavior of the system in terms of strength and failure modes. Shear key tests were also conducted. The shear connection study focused on investigating the composite behavior of the system based on varying the number of shear studs within a respective pocket as well as varying the number of pockets within a respective panel. The results indicated that this shear connection is extremely efficient in rendering the system under full composite action. Finite element analysis was conducted to determine the behavior of the shear connection prior to initiation of the actual full scale tests. In addition, finite element analysis was also performed with respect to the transverse joint tests in an effort to determine the behavior of the joints prior to actual testing. The most significant phase of the project was testing a full-scale model. The bridge was assembled in accordance with the procedures developed as part of the study on full-depth precast panels and the results obtained through this research. The system proved its effectiveness in withstanding the applied loading that exceeded eight times the truck loading in addition to the maximum negative and positive moment application. Only hairline cracking was observed in the deck at the maximum applied load. Of most significance was the fact that full composite action was achieved between the precast panels and the steel supporting system, and the exceptional performance of the transverse joint between adjacent panels.
Book Synopsis Experimental Evaluation of Full Depth Precast/prestressed Concrete Bridge Deck Planes by : Mohsen A. Issa
Download or read book Experimental Evaluation of Full Depth Precast/prestressed Concrete Bridge Deck Planes written by Mohsen A. Issa and published by . This book was released on 2002 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Evaluation of a Flat Slab, Post-tensioned Bridge System by : Bruce A. Munson
Download or read book Experimental Evaluation of a Flat Slab, Post-tensioned Bridge System written by Bruce A. Munson and published by . This book was released on 1991 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete by : Leandro F. M. Sanchez
Download or read book Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete written by Leandro F. M. Sanchez and published by Springer Nature. This book was released on with total page 701 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Analytical Evaluation of Residual Capacity of Corrosion-Damaged Prestressed Concrete Bridge Girders by : Ali Alfailakawi
Download or read book Experimental and Analytical Evaluation of Residual Capacity of Corrosion-Damaged Prestressed Concrete Bridge Girders written by Ali Alfailakawi and published by . This book was released on 2020 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The durability of infrastructure components, such as prestressed concrete bridge beams, can be significantly affected by long-term deterioration associated with corrosion. Corrosion is a major concern for bridges in Virginia, due to the frequent use of deicing salts during the winter, as well as the number of structures in marine environments. The residual capacity of corrosion damaged prestressed I-beams and box beams needs to be accurately estimated to determine if damaged bridges need to be posted, and to help with making informed decisions related to repair, rehabilitation and replacement of damaged bridges. This report presents the results of testing of six corrosion-damaged prestressed beams removed from existing bridges during their demolition. Three beams were Type II AASHTO I-beams extracted from the Lesner Bridge in Virginia Beach, and three were 48 in wide by 27 in deep box beams extracted from the Aden Road Bridge near Quantico, Virginia. Prior to testing, the beams were visually inspected and two types of non-destructive evaluations were performed to identify corrosion activity: resistivity measurements and half-cell potential measurements. The beams were then tested in the lab to determine their flexural strength. Following testing, samples of strand were removed and tested to determine their tensile properties. Cores were taken from the Aden Road beams and from both the beams and decks of the Lesner Bridge beams to determine compressive strength. Powdered concrete samples were removed to perform chloride concentration tests. The tested strengths of the beams were compared to calculated strengths using two methods for damage estimation and two different calculation approaches. The methods for damage estimation relied exclusively on visual inspections; one was the set of methods recommended by Naito et al. (2010), while the second was a modified method developed in this study from the current tests. The two calculation approaches were a strain compatibility method and the AASHTO LRFD method. Overall, the results yielded reasonable estimates of residual strength, except for one of the box beams that was discovered to have considerable water within the hollow cells. The final recommendations are that bridge inspectors develop detailed damage maps of corrosion-damaged beams, and that load raters use the Naito et al. method to get a conservative estimate of damage for both box beams and I-beams. Either method for calculating strength is valid, however the AASHTO LRFD method is simpler.
Book Synopsis Technologies for Improving the Evaluation and Repair of Concrete Bridge Decks by :
Download or read book Technologies for Improving the Evaluation and Repair of Concrete Bridge Decks written by and published by . This book was released on 1998 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Deck Analysis by : Eugene J. Obrien
Download or read book Bridge Deck Analysis written by Eugene J. Obrien and published by CRC Press. This book was released on 2014-10-06 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Captures Current Developments in Bridge Design and MaintenanceRecent research in bridge design and maintenance has focused on the serviceability problems of older bridges with aging joints. The favored solution of integral construction and design has produced bridges with fewer joints and bearings that require less maintenance and deliver increased
Book Synopsis Experimental Evaluation of Partial Depth Precast Concrete Deck Panels Subjected to Shear Loading by : John Robert Kintz
Download or read book Experimental Evaluation of Partial Depth Precast Concrete Deck Panels Subjected to Shear Loading written by John Robert Kintz and published by . This book was released on 2017 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Horizontally curved girder bridges are often utilized for highway interchanges and other projects with restricted right-of-way. The large torsional demands caused by the girder geometry often require these systems to have extensive bracing, typically in the form of cross frames or diaphragms, to increase the torsional stiffness of the girder system during the construction phase. The most critical stage for the bracing is during the deck placement, when the noncomposite girders must resist the full construction load. Partial depth precast concrete panels (PCPs) are prestressed concrete panels used primarily as stay-in-place (SIP) formwork for straight girder systems. They are placed on full-length extruded bedding strips epoxied to the girder top flange, and the remaining depth of the deck is cast above. This is a time-efficient method of construction, and has become an attractive option due to ease of constructability and deck longevity. Although the panels have not been used on horizontally curved girder systems, there is a desire by bridge owners and contractors to use the forms in some curved girder applications. In addition to using the panels on curved girder applications, engaging the in-plane shear stiffness of the panels may lead to significant bracing in both straight and horizontally curved girder applications. A research investigation focused on measuring the behavior of PCPs acting as a shear diaphragm, as well as to develop an adequate connection between the PCPs and the girders was conducted at The University of Texas at Austin. Four PCP connection details were developed and tested at two different bedding strip heights. These connections were designed for a range of capacities, and in-plane shear load was applied until failure using a frame mechanism assembly. The experimental results showed that the connected PCPs had significant shear stiffness and strength, with the panels reaching shear capacities between 91 and 154 kips before failure depending on the connection detail that was utilized. A 46 to 70 percent increase in shear stiffness was also observed when the bedding strip height was reduced from 4 inches to 1⁄2 inch. All panels greatly exceeded the design capacity using the ACI design predictions, with 7 of 8 panels eventually failing due to concrete side face breakout. The eighth PCP failed from weld rupture in which the weld connecting the WT and the girder flange began to unzip.
Author :United States. Federal Highway Administration. Offices of Research and Development Publisher : ISBN 13 : Total Pages :208 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 1980 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Bureau of Public Roads. Office of Research and Development Publisher : ISBN 13 : Total Pages :178 pages Book Rating :4.:/5 (3 download)
Book Synopsis Highway Research & Development Studies by : United States. Bureau of Public Roads. Office of Research and Development
Download or read book Highway Research & Development Studies written by United States. Bureau of Public Roads. Office of Research and Development and published by . This book was released on 1968 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Federally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1985 by :
Download or read book Federally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1985 written by and published by . This book was released on 1986 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Federally Coordinated Program of Highway Research, Development and Technology by :
Download or read book Federally Coordinated Program of Highway Research, Development and Technology written by and published by . This book was released on 1985 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rapid Replacement of Bridge Decks by : Maher K. Tadros
Download or read book Rapid Replacement of Bridge Decks written by Maher K. Tadros and published by Transportation Research Board. This book was released on 1998 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Highway Research and Development Studies Using Federal-aid Research and Planning Funds by :
Download or read book Highway Research and Development Studies Using Federal-aid Research and Planning Funds written by and published by . This book was released on 1968 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-Performance Eco-Efficient Concrete by : Carlos Thomas
Download or read book High-Performance Eco-Efficient Concrete written by Carlos Thomas and published by MDPI. This book was released on 2021-05-26 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to “High-Performance Eco-Efficient Concrete” and concrete fatigue behavior, more sustainable construction materials, capable of complying with quality standards and current innovation policies, aimed at saving natural resources and reducing global pollution. The development of self-compacting concretes with electric arc furnace slags is a further achievement. In addition, the technical and economic viability of using coarse recycled aggregates from crushed concrete in shotcrete, enhanced quality and reduced on-site construction time are the basic features of prefabricated bridge elements and systems, biomass bottom ash as aluminosilicate precursor and phosphogypsum were discussed. On the other hand, basalt fiber improving the mechanical properties and durability of reactive powder concrete, alkali-activated slag and high-volume fly ash and the potential of phosphogypsum as secondary raw material in construction industry, the effects of fly ash on the diffusion, bonding, and microproperties of chloride penetration in concrete were studied. Increasing amounts of sustainable concretes are being used as society becomes more aware of the environment. Finally, the circular economy as an economic model of production and consumption that involves reusing, repairing, refurbishing, and recycling materials after their service life are presented in this book.
