Performance Of Concrete Panels Strengthened Using Carbon Fiber Reinforced Polymers Cfrp
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Performance Of Concrete Panels Strengthened Using Carbon Fiber Reinforced Polymers Cfrp
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Author : Chang Hyuk Kim
language : en
Publisher:
Release Date : 2014
Performance Of Concrete Panels Strengthened Using Carbon Fiber Reinforced Polymers Cfrp written by Chang Hyuk Kim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Many bridges are handling heavier loads than those expected at design, making it increasingly necessary to strengthen existing members or conduct repairs on damaged structural members. Carbon Fiber Reinforced Polymer (CFRP) materials have been broadly used to repair and strengthen reinforced concrete structures. Using CFRP materials as the strengthening material is an excellent solution because of their mechanical properties. CFRP has properties of high strength, corrosion resistance, and light weight. CFRP materials are being widely used for shear and flexural strengthening. Most studies have focused on uni-directional layout of CFRP strips in high shear regions of beams. Recent shear tests on full-scale I-girders have shown that the use of bi-directional CFRP layouts with CFRP anchors led to much higher shear strength increases than when using uni-directional layouts. The objective of the study is to determine the mechanism that governs shear strengthening of bridge girders using bi-directional CFRP and, in doing so, demonstrate the feasibility of using bi-directional CFRP for shear strengthening of large bridge I- and U-beams. Small-scale panel tests have been conducted to investigate parameters that influence the shear strength provided by bi-directional CFRP layouts. Panels were tested under compressive forces to simulate the compression struts that develop in the webs of I-beams. The applied loads generated bottle-shaped compressive struts. CFRP anchors were used to prevent early failure due to CFRP strip delamination from the panel surface. The panels, while not fully reproducing the boundary condition of girder webs, were tested ahead of full-scale girders to investigate a wide range of parameters in a cost-effective manner. The variables considered include the amount of CFRP and steel reinforcement, the inclination of CFRP fibers, and the layout and spacing of CFRP strips. The panel tests provide qualitative comparisons between the influence of the various parameters. The relative strength contributions of CFRP strips, steel stirrups, and concrete were evaluated.
Strengthening Of Reinforced Concrete Structures
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Author : L C Hollaway
language : en
Publisher: Elsevier
Release Date : 1999-03-05
Strengthening Of Reinforced Concrete Structures written by L C Hollaway and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-03-05 with Technology & Engineering categories.
The in situ rehabilitation or upgrading of reinforced concrete members using bonded steel plates is an effective, convenient and economic method of improving structural performance. However, disadvantages inherent in the use of steel have stimulated research into the possibility of using fibre reinforced polymer (FRP) materials in its place, providing a non-corrosive, more versatile strengthening system. This book presents a detailed study of the flexural strengthening of reinforced and prestressed concrete members using fibre reinforces polymer composite plates. It is based to a large extent on material developed or provided by the consortium which studied the technology of plate bonding to upgrade structural units using carbon fibre / polymer composite materials. The research and trial tests were undertaken as part of the ROBUST project, one of several ventures in the UK Government's DTI-LINK Structural Composites Programme. The book has been designed for practising structural and civil engineers seeking to understand the principles and design technology of plate bonding, and for final year undergraduate and postgraduate engineers studying the principles of highway and bridge engineering and structural engineering. Detailed study of the flexural strengthening of reinforced and prestressed concrete members using fibre reinforced polymer composites Contains in-depth case histories
The Use Of Carbon Fiber Reinforced Polymer Strips For The External Strengthening Of Slabs
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Author : Alvaro Vasquez
language : en
Publisher:
Release Date : 1999
The Use Of Carbon Fiber Reinforced Polymer Strips For The External Strengthening Of Slabs written by Alvaro Vasquez and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Performance Of Carbon Fiber Reinforced Polymer Cfrp Tendons And Their Use For Strengthening Of Prestressed Concrete Beams
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Author : Carl Van Jerrett
language : en
Publisher:
Release Date : 1996
Performance Of Carbon Fiber Reinforced Polymer Cfrp Tendons And Their Use For Strengthening Of Prestressed Concrete Beams written by Carl Van Jerrett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Strengthening And Rehabilitation Of Civil Infrastructures Using Fibre Reinforced Polymer Frp Composites
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Author : L C Hollaway
language : en
Publisher: Elsevier
Release Date : 2008-07-18
Strengthening And Rehabilitation Of Civil Infrastructures Using Fibre Reinforced Polymer Frp Composites written by L C Hollaway and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-07-18 with Technology & Engineering categories.
The repair of deteriorated, damaged and substandard civil infrastructures has become one of the most important issues for the civil engineer worldwide. This important book discusses the use of externally-bonded fibre-reinforced polymer (FRP) composites to strengthen, rehabilitate and retrofit civil engineering structures, covering such aspects as material behaviour, structural design and quality assurance. The first three chapters of the book review structurally-deficient civil engineering infrastructure, including concrete, metallic, masonry and timber structures. FRP composites used in rehabilitation and surface preparation of the component materials are also reviewed. The next four chapters deal with the design of FRP systems for the flexural and shear strengthening of reinforced concrete (RC) beams and the strengthening of RC columns. The following two chapters examine the strengthening of metallic and masonry structures with FRP composites. The last four chapters of the book are devoted to practical considerations in the flexural strengthening of beams with unstressed and prestressed FRP plates, durability of externally bonded FRP composite systems, quality assurance and control, maintenance, repair, and case studies. With its distinguished editors and international team of contributors, Strengthening and rehabilitation of civil infrastructures using fibre-reinforced polymer (FRP) composites is a valuable reference guide for engineers, scientists and technical personnel in civil and structural engineering working on the rehabilitation and strengthening of the civil infrastructure. Reviews the use of fibre-reinforced polymer (FRP) composites in structurally damaged and sub-standard civil engineering structures Examines the role and benefits of fibre-reinforced polymer (FRP) composites in different types of structures such as masonry and metallic strengthening Covers practical considerations including material behaviour, structural design and quality assurance
Reinforced Concrete Deep Beams
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Author : F K Kong
language : en
Publisher: CRC Press
Release Date : 1991-05-01
Reinforced Concrete Deep Beams written by F K Kong and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-05-01 with Architecture categories.
The contents of this book have been chosen with the following main aims: to review the present coverage of the major design codes and the CIRIA guide, and to explain the fundamental behaviour of deep beams; to provide information on design topics which are inadequately covered by the current codes and design manuals; and to give authoritative revie
Flexural Performance Of Reinforced Concrete Beams Externally Strengthened With Carbon And Basalt Frp Sheets
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Author : Sahar Samir Choobbor
language : en
Publisher:
Release Date : 2015
Flexural Performance Of Reinforced Concrete Beams Externally Strengthened With Carbon And Basalt Frp Sheets written by Sahar Samir Choobbor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Basalt categories.
"Different strengthening systems have been widely used for many years to retrofit and repair deficient structural members. Reinforced concrete (RC) slabs and beams are commonly strengthened in flexure by externally bonding Carbon Fiber Reinforced Polymer (CFRP) sheets to the bottom side of the member. The CFRP sheets used in strengthening applications have high strength; however, they are brittle materials with low ductility. Basalt Fiber Reinforced Polymer (BFRP) sheets on the other hand have relatively lower strength compared to CFRP, however they have higher ductility. As a result, there is growing interest among researchers and practitioners in combining different types of FRP sheets to produce an enhanced strengthening system in terms of strength and ductility. This study investigates the flexural behavior of RC beams externally strengthened with CFRP sheets, BFRP sheets, and their hybrid combination (CFRP-BFRP). This hybrid system is designed to enhance the properties of composites, where it combines the high strength of CFRP and high ductility of BFRP sheets, respectively. To investigate the behavior of the different strengthening systems, an experimental program was conducted on ten RC beams that were tested under four-point bending. The load versus mid-span deflection data were recorded and used to compare the performance of the strengthened specimens. The test results indicated that all strengthened specimens yielded higher flexural capacity and lower ductility values compared to the unstrengthened control beam. The increase in the flexural capacity of the strengthened beams ranged from 23% to 68% of the control beam. Moreover, the beams strengthened with BFRP and hybrid CFRP-BFRP sheets achieved higher ductility compared with the beams strengthened with CFRP sheets. Thus, it was concluded that the use of a hybrid combination of CFRP-BFRP sheets could achieve the desired increase in the flexural capacity of RC beams with an improved ductility compared to that with CFRP sheets only. Finite element (FE) models were also developed and were able to capture the behavior of the tested beams with a good level of accuracy. The predicted flexural capacity along with the associated mid-span deflection differed by 1% to 10% from the experimental values."--Abstract.
10th International Conference On Frp Composites In Civil Engineering
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Author : Alper Ilki
language : en
Publisher: Springer Nature
Release Date : 2021-11-26
10th International Conference On Frp Composites In Civil Engineering written by Alper Ilki and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-11-26 with Technology & Engineering categories.
This volume highlights the latest advances, innovations, and applications in the field of FRP composites and structures, as presented by leading international researchers and engineers at the 10th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering (CICE), held in Istanbul, Turkey on December 8-10, 2021. It covers a diverse range of topics such as All FRP structures; Bond and interfacial stresses; Concrete-filled FRP tubular members; Concrete structures reinforced or pre-stressed with FRP; Confinement; Design issues/guidelines; Durability and long-term performance; Fire, impact and blast loading; FRP as internal reinforcement; Hybrid structures of FRP and other materials; Materials and products; Seismic retrofit of structures; Strengthening of concrete, steel, masonry and timber structures; and Testing. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.
Fiber Reinforced Plastic Frp Reinforcement For Concrete Structures
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Author : David A. Hensher
language : en
Publisher: Elsevier
Release Date : 2016-01-22
Fiber Reinforced Plastic Frp Reinforcement For Concrete Structures written by David A. Hensher and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-01-22 with Technology & Engineering categories.
The use of fiber reinforced plastic (FRP) composites for prestressed and non-prestressed concrete reinforcement has developed into a technology with serious and substantial claims for the advancement of construction materials and methods. Research and development is now occurring worldwide. The 20 papers in this volume make a further contribution in advancing knowledge and acceptance of FRP composites for concrete reinforcement. The articles are divided into three parts. Part I introduces FRP reinforcement for concrete structures and describes general material properties and manufacturing methods. Part II covers a three-continent perspective of current R&D, design and code implementations, and technical organizations' activities. Part III presents an in-depth description of commercially-available products, construction methods, and applications. The work is intended for engineers, researchers, and developers with the objective of presenting them with a world-wide cross-section of initiatives, representative products and significant applications.
Strengthening Of One Way And Two Way Reinforced Concrete Slabs Using Carbon Fiber Reinforced Polymer Cfrp Materials
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Author : David H. Parler
language : en
Publisher:
Release Date : 2004
Strengthening Of One Way And Two Way Reinforced Concrete Slabs Using Carbon Fiber Reinforced Polymer Cfrp Materials written by David H. Parler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Bridges categories.