Fiber Reinforced Polymer Bridge Girders For Extremely Aggressive Environments
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Fiber Reinforced Polymer Bridge Girders For Extremely Aggressive Environments
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Author : Abdellah Emad Azeez
language : en
Publisher:
Release Date : 2019
Fiber Reinforced Polymer Bridge Girders For Extremely Aggressive Environments written by Abdellah Emad Azeez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Fiber-reinforced concrete categories.
In 2012, the federal government estimated that $17.5 billion was spent on inspection, rehabilitation, maintenance, and replacement of the nation's bridges. While the average lifespan of steel and reinforced concrete bridges is 50 years, certain bridges subjected to extremely aggressive marine environments may not reach this desired target. This research paper investigates using fiber-reinforced polymer (FRP) materials as primary bridge girders in medium span bridges (30 ft. to 75 ft.). The goal of this research is to identify the most efficient and cost-effective alternative for these corrosion-resistant materials and potentially extend the lifespan of these bridges up to 75 years. Three distinct profiles were investigated in this research : U-shaped, concrete-filled FRP tubes, and Double Web I-Beams (DWB). Finite Element Modeling (FEM) was used to study the overall stiffness of FRP girder bridges with a case-in-place concrete deck. Girder distribution factors for moment were also computed using reliability analysis tools and FEM. These results were then compared to existing AASHTO methods. Once the most efficient cross-section was identified (S-shaped girder), a preliminary study investigating the vacuum infusion manufacturing process was conducted to verify that the required thickness of FRP can be achieved. Simple bending tests were completed on small-scale FRP beams to demonstrate the strength capacity and evaluate any difficulties using the vacuum infusion process (VIP). The results in this research study conclude that the U-shaped bridge is the most cost-effective alternative, yet fabrication remains challenging and complicated.
Bridge Girder Alternatives For Extremely Aggressive Environments
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Author :
language : en
Publisher:
Release Date : 2018
Bridge Girder Alternatives For Extremely Aggressive Environments written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Bridges categories.
Researchers from Embry-Riddle Aeronautical University investigated existing fiber-reinforced polymer (FRP) systems that could be used in spans up to 75 feet in aggressive environments, such as Florida's coastal waters.
Fiber Reinforced Polymer Frp Composites For Infrastructure Applications
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Author : Ravi Jain
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-01-02
Fiber Reinforced Polymer Frp Composites For Infrastructure Applications written by Ravi Jain and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-02 with Science categories.
This book examines current issues of fiber reinforced polymer (FRP) composites in civil infrastructure. The contents of this book are divided into two parts. The first part engages topics related to durability and service life of FRP composites and how they contribute to sustainability. The second part highlights implementation and applications of the FRP composites with an emphasis on bridge structures. An introductory chapter provides an overview of FRP composites and its role in a sustainable built environment highlighting the issues of durability and service life followed by a current review of sustainability in infrastructure design.
Design Of Concrete Bridge Beams Prestressed With Cfrp Systems
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Author : Abdeldjelil Belarbi
language : en
Publisher:
Release Date : 2019
Design Of Concrete Bridge Beams Prestressed With Cfrp Systems written by Abdeldjelil Belarbi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Building materials categories.
This report proposes guidelines and presents research findings that are expected to advance and facilitate the use of CFRP systems in bridge applications. In addition, five design examples that illustrate the step-by-step use of the proposed guide specifications are provided. Carbon fiber reinforced polymer (CFRP) is becoming a recognized alternative to traditional construction materials in a wide range of civil engineering applications. An example of such applications is the use of CFRP cables or bars as prestressing tendons for concrete bridge girders, especially in aggressive environments where steel prestressing strands are susceptible to corrosion. Despite their promise, CFRP prestressing tendons have not frequently been used for bridge construction in the United States; their use has been hampered by the lack of recognized design specifications.
Advanced Composites In Bridge Construction And Repair
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Author : Yail Jimmy Kim
language : en
Publisher: Elsevier
Release Date : 2014-05-16
Advanced Composites In Bridge Construction And Repair written by Yail Jimmy Kim and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-16 with Technology & Engineering categories.
Advanced composite materials for bridge structures are recognized as a promising alternative to conventional construction materials such as steel. After an introductory overview and an assessment of the characteristics of bonds between composites and quasi-brittle structures, Advanced Composites in Bridge Construction and Repair reviews the use of advanced composites in the design and construction of bridges, including damage identification and the use of large rupture strain fiber-reinforced polymer (FRP) composites. The second part of the book presents key applications of FRP composites in bridge construction and repair, including the use of all-composite superstructures for accelerated bridge construction, engineered cementitious composites for bridge decks, carbon fiber-reinforced polymer composites for cable-stayed bridges and for repair of deteriorated bridge substructures, and finally the use of FRP composites in the sustainable replacement of ageing bridge superstructures. Advanced Composites in Bridge Construction and Repair is a technical guide for engineering professionals requiring an understanding of the use of composite materials in bridge construction. Reviews key applications of fiber-reinforced polymer (FRP) composites in bridge construction and repair Summarizes key recent research in the suitability of advanced composite materials for bridge structures as an alternative to conventional construction materials
Design And Environmental Performance Of Near Surface Mounted Carbon Fiber Reinforced Polymer Strips For Shear Strengthening Reinforced Concrete Bridge Girders
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Author : Jacob Hans Goebel
language : en
Publisher:
Release Date : 2011
Design And Environmental Performance Of Near Surface Mounted Carbon Fiber Reinforced Polymer Strips For Shear Strengthening Reinforced Concrete Bridge Girders written by Jacob Hans Goebel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
During the interstate expansion of the 1950s, many conventionally reinforced concrete deck girder bridges were built throughout the country. These now vintage bridges commonly exhibit diagonal cracking and rate inadequately for shear, thus they are candidates for shear strengthening to extend their useful life. Near-surface mounted (NSM) retrofitting is a promising new strengthening technique, but limited test data are available for carbon fiber reinforced polymer (CFRP) in shear strengthening making the long-term durability of NSM-CFRP unknown. This paper provides experimental results from realistic full-scale specimens strengthened with NSM-CFRP. Specimens were tested for shear strength and subjected to environmental exposures to assess long-term durability. Small cylinder specimens were tested to investigate relative performance of different adhesives on bond strength under different environmental exposures. Test results provide a better understanding of the NSM-CFRP shear behavior and strength. Recommendations for shear strength design with NSM-CFRP are made.
Frp Deck And Steel Girder Bridge Systems
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Author : Julio F. Davalos
language : en
Publisher: CRC Press
Release Date : 2013-03-26
Frp Deck And Steel Girder Bridge Systems written by Julio F. Davalos and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-26 with Technology & Engineering categories.
This book presents the analysis and design of fiber-reinforced polymer (FRP) bridge decks, which have been increasingly implemented in rehabilitation projects and new construction due to their reduced weight, lower maintenance costs, and enhanced durability. It compiles the necessary information, based primarily on research by the authors, to facilitate the development of standards and guidelines for using FRP decks in bridge designs. The book combines analytical models, numerical analyses, and experimental investigations, which can be applied to various design formulations. It also, for the first time, offers a complete set of design guidelines.
Advanced Fibre Reinforced Polymer Frp Composites For Structural Applications
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Author : L.C. Hollaway
language : en
Publisher: Elsevier Inc. Chapters
Release Date : 2013-09-30
Advanced Fibre Reinforced Polymer Frp Composites For Structural Applications written by L.C. Hollaway and has been published by Elsevier Inc. Chapters this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-30 with Technology & Engineering categories.
Chapters 16 and discuss the development of the advanced polymer composite material applications in bridge engineering. They demonstrate the innovative types of components and structures which have been developed from FRP composite materials and the most advantageous way to employ composites in bridge engineering. Given the importance of bridge infrastructure, the discussion of this topic has been split over two chapters. This chapter focuses on the type of FRP composite materials used in bridge engineering, their in-service properties and their applications in bridge enclosures and the rehabilitation of reinforced and prestressed concrete bridge beams and columns. covers rehabilitation of metallic bridge structures, all FRP composite bridges and bridges built with hybrid systems.
Aashto Lrfd Bridge Design Guide Specifications For Gfrp Reinforced Concrete Bridge Decks And Traffic Railings
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Author :
language : en
Publisher: AASHTO
Release Date : 2009
Aashto Lrfd Bridge Design Guide Specifications For Gfrp Reinforced Concrete Bridge Decks And Traffic Railings written by and has been published by AASHTO this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Bridge railings categories.
Glass fiber reinforced polymer (GFRP) materials have emerged as an alternative material for producing reinforcing bars for concrete structures. GFRP reinforcing bars offer advantages over steel reinforcement due to their noncorrosive nature and nonconductive behavior. Due to other differences in the physical and mechanical behavior of GFRP materials as opposed to steel, unique guidance on the engineering and construction of concrete bridge decks reinforced with GFRP bars is needed. These guide specifications offer a description of the unique material properties of GFRP composite materials as well as provisions for the design and construction of concrete bridge decks and railings reinforced with GFRP reinforcing bars.
Environmental Durability Of Reinforced Concrete Deck Girders Strengthened With Surface Bonded Carbon Fiber Reinforced Polymer
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Author : Gautam Jayant Sopal
language : en
Publisher:
Release Date : 2009
Environmental Durability Of Reinforced Concrete Deck Girders Strengthened With Surface Bonded Carbon Fiber Reinforced Polymer written by Gautam Jayant Sopal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Carbon fibers categories.
Long-term durability of surface-bonded carbon fiber-reinforced polymer (CFRP) for shear strengthening of reinforced concrete (RC) bridge members remains uncertain due to the limited field experience with these materials. This paper provides experimental results from the testing of full-scale RC bridge girder specimens after exposure to prolonged environmental exposure and combined action of freeze-thaw + repeated service loads. CFRP shear contributions seen in experimental results were estimated using a refined base capacity prediction (Response-2000) and compared to predicted CFRP shear contributions (ACI-440). The IT specimens did not exhibit strength reductions due to moisture exposure, instead the presence of continuous water exposure for the relatively young concrete caused higher concrete tensile properties resulting in increased bond strength. Previous research showed CFRP strengthened T specimens with freeze-thaw exposure exhibited lower shear capacity than similar unexposed CFRP strengthened T specimen. But the current research demonstrated that if the beam is well protected against moisture infiltration at the strip termination, the beam will be less susceptible to freeze-thaw bond deterioration. The orientations of specimens during repair and during exposure are important considerations for environmental durability. The CFRP strip terminations should be focused on during installation to insure well and perhaps extra saturation even past the CFRP material to limit moisture infiltration along this edge.