Download or read book Precast Bridge Deck Joints Using FRP and Ultra high Performance Concrete written by Augustine Kuuku Banson and published by . This book was released on 2013 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for rapid construction or replacement of highway bridge decks can be addressed by precast concrete elements reinforced with Glass Fiber Reinforced Polymer (GFRP) bars with cast-in-place joints made using Ultra-High Performance Concrete (UHPC). This thesis investigates the bond between GFRP bars and UHPC and splice length optimization to obtain narrow joints and simplified bar geometries. Multiple linear regression analyses of existing bond data indicate that the bar's Young's Modulus and embedded length are the most significant parameters that influence the average bond strength of sand-coated GFRP bars in UHPC: increasing either decreases the average bond strength. Linear-elastic uncracked Finite Element analysis of pull-out specimens indicates that reinforcing bars with low Young's Moduli have highly non-uniform bond distributions along their length and so exhibit high peak bond stresses and low average bond strengths. The higher average bond strengths observed for High Modulus (HM) GFRP bars compared to Low Modulus (LM) GFRP bars is likely because the HM GFRP bars have lower interlaminar shear strength. A methodology for GFRP reinforcement design that synthesizes provisions from the Flexural Design Method in the Canadian Highway Bridge Design Code including an additional new step to determine bar splice lengths in UHPC was developed. Splice lengths and bond resistance factors for HM GFRP bars in UHPC are determined by reliability analysis to resist either bar stresses due to the factored applied moments or the mean ultimate tensile strength of the bar. A significant reduction in splice length can be achieved if splices are designed to resist the bar stresses at factored applied moments. A new resistance factor of 0.5 for bond of GFRP bars in UHPC is also recommended.

Download or read book Ultra High Performance Concrete and Nanotechnology in Construction Proceedings of Hipermat 2012 3rd International Symposium on UHPC and Nanotechnology for High Performance Construction Materials written by Insert Name Here and published by kassel university press GmbH. This book was released on 2012-01-01 with total page 1059 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultra High Performance Concrete UHPC Precast Segmental Bridges written by Jaewoo Shin and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Ultra high Performance Concrete for Longitudinal Joints in Deck Bulb Tee Bridge Girders written by Timothy John Peruchini and published by . This book was released on 2017 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, many state DOTs have implemented ultra-high performance concrete (UHPC) in bridge construction because of its advanced mechanical properties beyond those of conventional concrete. The Federal Highway Administration (FHWA) has extensively tested a proprietary class of UHPC, but WSDOT has been hesitant to adopt this mix because of its high cost and associated high risk. In this study, a mix design developed by Washington State University was tested for its structural performance when used in a reinforced spliced connection between adjacent concrete deck-bulb tee (DBT) bridge decks. The important parameter for this application is the bond strength of epoxy-coated reinforcing bars to the UHPC as well as the tension strength of the UHPC when the rebar in the connection is stressed axially in tension. ASTM-standard test procedures in this study showed that compressive strengths up to 16 ksi, tension strengths above 2 ksi, and bond strengths up to 7 ksi can be achieved with this particular UHPC, all with improved ductility beyond that of conventional concrete due largely to the steel fiber reinforcement. Structural experiments were performed on idealized "bond curbs" as well as a section of deck representing actual DBT girders to determine the available bond strength and the corresponding required joint width. These experiments and the subsequent analysis showed that a UHPC joint width of 7.11 inches, corresponding to a splice length of 5.11 inches, is satisfactory to fracture the reinforcement within the connection. To account for construction tolerances, this joint width should, in practice, be increased to 10 inches.

Download or read book Innovative Bridge Structures Based on Ultra High Performance Concrete UHPC written by Xudong Shao and published by Elsevier. This book was released on 2024-01-18 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovative Bridge Structures Based on Ultra-High Performance Concrete (UHPC): Theory, Experiments and Applications introduces more than a dozen innovative bridge structures and engineering applications developed by the author's team based on UHPC. As the new bridge structure developed by UHPC can make outstanding contributions to the realization of the "carbon peaking and carbon neutrality goals" and "sustainable development," and since recent studies have shown that the application of UHPC is expected to greatly reduce the amount of materials and carbon emissions and prolong the life of the structure, this book is an ideal update on the topic. For example, after calculation, when UHPC is applied to the arch bridge with compression as the main stress characteristic, compared with the steel arch bridge, the dead weight of the UHPC arch bridge is basically the same, and the cost and carbon emission are only 34% and 20% of the latter. Ultra-high performance concrete (UHPC) as a new generation of civil structural materials has the characteristics of high strength, high toughness and high durability. Through the collaborative innovation of new materials and new structures, the application of UHPC in bridge engineering is expected to achieve the goal of economical, environmentally-friendly, durable and high performance of the main structure. Teachers readers about the new structures and technologies in bridge engineering developed by the author's team based on UHPC Provides relevant experimental studies and the mechanical properties of different UHPC structures Helps users understand the design method and calculation theory of UHPC bridge structures Covers the characteristics and advantages of new UHPC structures and technologies applied to engineering

Download or read book Ultra high Performance Concrete Composite Connections for Precast Concrete Bridge Decks written by Benjamin A. Graybeal and published by . This book was released on 2012 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The demand for accelerated construction of highway bridges and the historically sub-optimal performance of cast-in-place bridge decks has led to a demand for the use of prefabricated concrete bridge decks. Although this decking system presents many advantages, one fundamental hurdle to its use is the field-cast connections which join the panels to the supporting superstructure. The intent of this research project is to redesign the composite connection in a way that provides for simple, constructible details which do not present field fit-up issues and which provide good long-term durability performance. A relatively new construction material, ultra-high performance concrete (UHPC), was engaged for this project"--Technical report documentation page.

Download or read book Studies on the Use of High performance Concrete and FRP Reinforcement for the I225 Parker Road Bridge written by and published by . This book was released on 2003 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Ultra high Performance Concrete UHPC in Joints of Bridge Girders written by Saipavan Rallabhandhi and published by . This book was released on 2016 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Joints are often considered as the weak link in a structure and often deterioration of the structure initiates from the joints. Joints transfer the stresses from super-structure to sub-structure and in this process are subjected to large transfer stresses. Not much attention is given to the design of joints as they are positioned in low moment regions and typically a 4 to 6 ksi (28 to 41 MPa) concrete is used to fill the joints. One of the solution to this problem is Ultra-high performance concrete (UHPC). In the recent past significant research has been done to use UHPC in deck-level connections and successful results were obtained. UHPC is a relatively new concrete material which not only has high compressive (18 ksi/124 MPa) and tensile strengths (5 ksi/35 MPa) with a very high chemical resistance, and durability. Use of steel fibers in UHPC helps increasing the service life. UHPC was successfully used by New York State and Iowa State Department of Transportations (DoT) in many bridges as various components, and proved to help with Accelerated Bridge Construction (ABC) which makes its use economical and time saving. This research focused on using UHPC as joint filler material along with High strength self-consolidating concrete (HS-SCC) while studying the effects of using different continuity details and effects of surface preparation of beam in a reinforced concrete section subjected to high-moment loading using 22 test specimens. An investigation of non-prestressed Missouri Department of Transportation (MoDoT) end girder detail using UHPC in the joint was also conducted. UHPC when used in the joints can be a viable solution making joints the stronger link holding the structure together"--Abstract, page iii.

Download or read book Ultra high Performance Concrete Composite Connections for Precast Concrete Bridge Decks written by and published by . This book was released on 2012 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Designing and Building with UHPFRC written by Jacques Resplendino and published by John Wiley & Sons. This book was released on 2013-01-29 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the international workshop “Designing and Building with Ultra-High Performance Fibre-Reinforced Concrete (UHPFRC): State of the Art and Development”, organized by AFGC, the French Association for Civil Engineering and French branch of fib, in Marseille (France), November 17-18, 2009. This workshop was focused on the experience of a lot of recent UHPFRC realizations. Through more than 50 papers, this book details the experience of many countries in UHPFRC construction and design, including projects from Japan, Germany, Australia, Austria, USA, Denmark, the Netherlands, Canada... and France. The projects are categorized as novel architectural solutions, new frontiers for bridges, new equipments and structural components, and extending the service life of structures. The last part presents major research results, durability and sustainability aspects, and the updated AFGC Recommendations on UHPFRC.

Download or read book Behavior of Field cast Ultra high Performance Concrete Bridge Deck Connections Under Cyclic and Static Structural Loading written by Benjamin A. Graybeal and published by . This book was released on 2010 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The use of modular bridge deck components has the potential to produce higher quality, more durable bridge decks; however, the required connections have often proved lacking, resulting in less than desirable overall system performance. Advanced cementitious composite materials whose mechanical and durability properties far exceed those of conventional concretes present an opportunity to significantly enhance the performance of field-cast connections thus facilitating the wider use of modular bridge deck systems. Ultra-high performance concrete (UHPC) represents a class of such advanced cementitious composite materials. Of particular interest here, UHPCs can exhibit both exceptional bond when cast against previously cast concrete and can significantly shorten the development length of embedded discrete steel reinforcement. These properties allow for a redesign of the modular component connection, facilitating simplified construction and enhanced long-term system performance. This study investigated the structural performance of field-cast UHPC connections for modular bridge deck components. The transverse and longitudinal connection specimens simulated the connections between precast deck panels and the connections between the top flanges of deck-bulb-tee girders, respectively. Testing included both cyclic and static loadings. The results demonstrated that the field-cast UHPC connection facilitates the construction of an emulative bridge deck system whose behaviors should meet or exceed those of a conventional cast-in-place bridge deck"--Technical report documentation page.

Download or read book Full depth Precast Concrete Bridge Deck Panel Systems written by Sameh S. Badie and published by Transportation Research Board. This book was released on 2008 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultra High Performance Concrete written by Ekkehard Fehling and published by kassel university press GmbH. This book was released on 2008-01-01 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bridge Deck Joint Performance written by Ronald L. Purvis and published by Transportation Research Board. This book was released on 2003 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 319: Bridge Deck Joint Performance presents the state of the practice on commonly used expansion joint systems in bridges by summarizing performance data for each system type and by providing examples of selection criteria and design guidelines.

Download or read book Accelerated Bridge Construction written by Mohiuddin Ali Khan and published by Elsevier. This book was released on 2014-08-12 with total page 651 pages. Available in PDF, EPUB and Kindle. Book excerpt: The traveling public has no patience for prolonged, high cost construction projects. This puts highway construction contractors under intense pressure to minimize traffic disruptions and construction cost. Actively promoted by the Federal Highway Administration, there are hundreds of accelerated bridge construction (ABC) construction programs in the United States, Europe and Japan. Accelerated Bridge Construction: Best Practices and Techniques provides a wide range of construction techniques, processes and technologies designed to maximize bridge construction or reconstruction operations while minimizing project delays and community disruption. Describes design methods for accelerated bridge substructure construction; reducing foundation construction time and methods by using pile bents Explains applications to steel bridges, temporary bridges in place of detours using quick erection and demolition Covers design-build systems' boon to ABC; development of software; use of fiber reinforced polymer (FRP) Includes applications to glulam and sawn lumber bridges, precast concrete bridges, precast joints details; use of lightweight aggregate concrete, aluminum and high-performance steel

Download or read book Application of Ultra High Performance Concrete in Prefabricated Bridge Element Connections for Accelerated Bridge Construction written by Daniel Bridi Valentim and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A relatively new type of beam falling under the accelerated bridge construction (ABC) umbrella, the Northeast Extreme Tee (NEXT) D beam, was designed by the PCI Northeast Bridge Technical Committee, with connection details that substitute traditional welded ties joining butted-beam systems, such as bulb-tee girders and double-tee beams. Grout has traditionally been used in joints between prefabricated bridge elements and systems (PBES). This material, however, has resulted in issues with shear key cracking reported by the Federal Highway Administration. An alternative cementitious material, ultra-high performance concrete (UHPC), has been used as a great solution for connections between PBES in ABC. This material exhibits superior properties such as compressive, tensile, and bond strength, durability, and long-term stability when compared to conventional connection materials. Three main studies are presented herein. The first study presents a tensile strength evaluation of 54 UHPC specimens by comparing the direct tension (DT), four-point bending, and double-edge wedge-splitting (DEWS) test methods. No statistically significant difference was found between the peak tensile strengths obtained from DT and DEWS specimens. DEWS specimens are tested using a compression-testing machine, and can be cored and finished from existing UHPC members. The second study evaluates the bond-slip behavior of UHPC and untensioned prestressing strands. The variables studied in the 54 tested pull-out specimens include clear cover, embedment length, and strand diameter (dPT). It was observed that specimens that experienced strand failure had an embedment length of at least 24×dPT or clear cover distance of 2.17×dPT. The third study investigates the behavior of NEXT D beams under fatigue loading. Four double-tee and four slab specimens were subjected to 1 million cycles under AASHTO standard wheel truck loads. Moreover, finite element analyses (FEAs) were performed, effectively simulating the tested specimens, and a 60-ft. long bridge model was created to simulate a constructed bridge in Mobile County, Alabama. It was observed that an 8-in. (203-mm) wide UHPC joint with a single reinforcement layer containing straight #5 bars, an 8-in. (203-mm) embedment length, and spaced every 6 in. (152 mm) had satisfactory performance according to results from experimental testing and FEAs.

Download or read book Behavior of Precast Bridge Deck Joints with Small Bend Diameter U Bars written by Cheryl Elizabeth Chapman and published by . This book was released on 2010 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Interstate Highway System plays a vital role in our economic development by providing a continuous corridor for transporting goods and services. Currently, there is a need for repair and expansion of the existing highways, which include all bridges along its path. Because of the high demand for the highway system, repair and expansion must occur rapidly and efficiently. In recent years, precast bridge deck systems have become an efficient way to reduce construction time during repair. This thesis presents the experimental research of the behavior of the U-Bar joint detail used in precast bridge deck systems. This detail consists of staggered reinforcement extending beyond the precast deck portion into the joint. Six specimens utilizing the U-Bar detail were constructed and tested. Three specimens were tested in flexure to simulate the forces applied in a longitudinal deck joint, while three specimens were tested in pure tension to simulate the forces experienced in a transverse deck joint located over an interior pier. A tight 180° bend at 3d[subscript b] was desired in order to minimize the thickness of the deck. To achieve this tight bend, deformed wire reinforcement was chosen for the U-Bar detail due to the favorable material properties of deformed wire reinforcement. The purpose of the testing was to determine if the joint details could generate a precast deck system that could emulate the monolithic cast-in-place deck systems already in use. For monolithic behavior in a precast deck system, the joints must be able transfer shear, tension and moments. In this research, the joint overlap length was the most dominant variable, and should not be less than 152.4 mm (6"). The precast bridge deck joint should consist of high strength concrete with f'[subscript c] of at least 68.9 MPa (10 ksi). The longitudinal reinforcement spacing should be no greater than 152.4 mm (6").