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Effects Of Temperature And Sustained Loading On The Response Of Frp Strengthened Concrete Elements
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Book Synopsis Effects of Temperature and Sustained Loading on the Response of FRP-strengthened Concrete Elements by : Yoseok Jeong
Download or read book Effects of Temperature and Sustained Loading on the Response of FRP-strengthened Concrete Elements written by Yoseok Jeong and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fiber reinforced polymer (FRP) repair systems for concrete structures have been widely used in civil infrastructure. Concrete-epoxy interfaces (CEI) are formed during the installation of externally bonded FRP systems to concrete structures. Research on their short-term behavior under aggressive environmental conditions has been conducted extensively in the past. Nevertheless, long-term performance and durability issues of these strengthening systems still remain largely uncertain. Thus, it is critical to study the effects of sustained load and temperature on the time-dependent deformation of the concrete-epoxy interface along with the residual strength of the FRP-strengthened concrete element.Single-lap shear and three-point bending test specimens were used to evaluate temperature effect and the time-dependent behavior during sustained loading below and at ultimate strength after the sustained loading period. The test results demonstrated the effects of temperature and sustained loading on creep behavior and on the remaining strength (the fracture energy) after creep duration. The creep responses of single-lap shear and three-point bending test specimens depend on the creep response of the epoxy. The effect of sustained loading on the remaining strength is positive for the single-lap shear specimens. However, this positive effect decreases as the creep duration increases. On the other hand, for the three-point bending test specimens, the sustained loading effect is negative on the remaining strength because presence of sustained loading leads to a weakening in the bond strength in the concrete-epoxy interface, which is evidenced by the fracture surface analysis of tested three-point bending specimens.Results of a numerical study of the single-lap shear specimens are also presented. Numerical models used the viscoelastic model for the creep tests and a plastic damage model for the bond tests. Results were compared with the available experimental results. The results show good correlations between the analysis and tests. It is proven that the creep behavior of the single-lap shear specimen is mainly governed by the creep characteristics of the epoxy. The numerical results also suggest that the redistributing of the interfacial bond stress can lead to an increase in the remaining strength of the single-lap shear specimens. A parametric study is carried out in order to investigate the various factors affecting creep behaviors and bond behaviors of single-lap shear specimens. Elevated temperatures and increased epoxy thicknesses lead to an increase in the remaining strength of the single-lap shear specimens due to stress redistribution occurring during the sustained loading period.
Book Synopsis Low and High Temperature Performance of Near Surface Mounted FRP Strengthened Concrete Slabs by : Paul Jonathan Burke
Download or read book Low and High Temperature Performance of Near Surface Mounted FRP Strengthened Concrete Slabs written by Paul Jonathan Burke and published by . This book was released on 2008 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Near surface mounted (NSM) FRP reinforcement has recently emerged as a promising alternative technology for strengthening concrete structures in both flexure and shear, as opposed to externally bonded FRP strengthening systems. Available research to date has focused primarily on overall member behaviour and/or the various parameters that affect the bond performance of either rectangular NSM strips or round NSM bars. No research has apparently focused on the effect of low or high temperature exposure on NSM FRP performance. It has been suggested by numerous researchers that NSM FRP reinforcement may outperform externally bonded FRP strengthening systems at elevated temperatures, but this assertion has yet to be supported by test results. An extensive review of NSM FRP technology is presented. The results of an experimental program conducted on twenty-three (23) concrete NSM FRP strengthened slab strips are presented to investigate their high (up to 200°C) and low ( -26°C) temperature flexural performance. The effect of using one of two different adhesive systems (epoxy and cement-based) and two different NSM groove widths (6.4 mm and 3.2 mm) is also studied. An innovative photo imaging instrumentation technique is validated against traditional instrumentation techniques for the first time in NSM flexural testing. A numerical layer model is presented and compared against test results. It is demonstrated that low temperature exposure has no measurable negative effects on the flexural performance of the slab strips tested. From high temperature exposures, it is shown that the cementitious adhesive outperforms the epoxy adhesive system, allowing the strengthening system to remain structurally effective for more than 5 hours at 100°C under sustained loads.
Book Synopsis 10th International Conference on FRP Composites in Civil Engineering by : Alper Ilki
Download or read book 10th International Conference on FRP Composites in Civil Engineering written by Alper Ilki and published by Springer Nature. This book was released on 2021-11-26 with total page 2516 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Response of Structures Under Extreme Loading by : Venkatesh K.R. Kodur
Download or read book Response of Structures Under Extreme Loading written by Venkatesh K.R. Kodur and published by DEStech Publications, Inc. This book was released on 2015-07-01 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt: Original research on performance of materials under a wide variety of blasts, impacts, severe loading and fireCritical information for protecting buildings and civil infrastructure against human attack, deterioration and natural disastersTest and design data for new types of concrete, steel and FRP materials This technical book is devoted to the empirical and theoretical analysis of how structures and the materials constituting them perform under the extreme conditions of explosions, fire, and impact. Each of the 119 fully refereed presentations is published here for the first time and was selected because of its original contribution to the science and engineering of how materials, bridges, buildings, tunnels and their components, such as beams and pre-stressed parts, respond to potentially destructive forces. Emphasis is placed on translating empirical data to design recommendations for strengthening structures, including strategies for fire and earthquake protection as well as blast mitigation. Technical details are provided on the development and behavior of new resistant materials, including reinforcements, especially for concrete, steel and their composites.
Book Synopsis Fibre-reinforced Polymer Reinforcement For Concrete Structures (In 2 Volumes) - Proceedings Of The Sixth International Symposium On Frp Reinforcement For Concrete Structures (Frprcs-6) by : Kiang Hwee Tan
Download or read book Fibre-reinforced Polymer Reinforcement For Concrete Structures (In 2 Volumes) - Proceedings Of The Sixth International Symposium On Frp Reinforcement For Concrete Structures (Frprcs-6) written by Kiang Hwee Tan and published by World Scientific. This book was released on 2003-06-20 with total page 1526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibre-reinforced polymer (FRP) reinforcement has been used in construction as either internal or external reinforcement for concrete structures in the past decade. This book provides the latest research findings related to the development, design and application of FRP reinforcement in new construction and rehabilitation works. The topics include FRP properties and bond behaviour, externally bonded reinforcement for flexure, shear and confinement, FRP structural shapes, durability, member behaviour under sustained loads, fatigue loads and blast loads, prestressed FRP tendons, structural strengthening applications, case studies, and codes and standards.
Book Synopsis The Effects of Elevated Temperatures on Fibre Reinforced Polymers for Strengthening Concrete Structures by : Robert Thomas Eedson
Download or read book The Effects of Elevated Temperatures on Fibre Reinforced Polymers for Strengthening Concrete Structures written by Robert Thomas Eedson and published by . This book was released on 2013 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fibre reinforced polymer (FRP) composites for strengthening reinforced concrete structures has become increasingly popular in recent years. However, before FRPs can be implemented in interior building applications their performance during fire must be assessed and understood. There currently remains a paucity of information in this area for most currently available FRP strengthening systems. This thesis presents a study of the mechanical and bond properties of selected currently available FRP strengthening systems for concrete structures at elevated temperatures such as might be experienced during a fire. Testing has been performed and is reported to study the continuous unidirectional coupon tensile strength, lap-splice FRP-to- FRP shear bond strength and tensile elastic modulus at elevated temperatures. Results of thermal characterization tests are also completed in an attempt to relate properties of the polymer matrix, such as the glass transition temperature, and thermal decomposition temperature to the losses of strength and stiffness observed for FRP coupons during steady-state and transient exposure to elevated temperatures up to 200oC. A simple analytical model is presented, for which the input parameters can be determined using dynamic mechanical thermal analysis and thermogravimetric analysis, to describe the reduction in mechanical and bond properties of the FRP systems at elevated temperatures. Based on this testing and subsequent analysis it is recommended that a conservative limit on the allowable temperature exposure for FRP systems during fire be set as the glass transition temperature measured using dynamic mechanical thermal analysis. Furthermore it is suggested that differential scanning calorimetry may not be an appropriate method of determining the glass transition temperature for available FRP systems used in concrete strengthening applications.
Book Synopsis Fire Properties of Polymer Composite Materials by : A. P. Mouritz
Download or read book Fire Properties of Polymer Composite Materials written by A. P. Mouritz and published by Springer Science & Business Media. This book was released on 2007-01-30 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first to deal with the important topic of the fire behaviour of fibre reinforced polymer composite materials. The book covers all of the key issues on the behaviour of composites in a fire. Also covered are fire protection materials for composites, fire properties of nanocomposites, fire safety regulations and standards, fire test methods, and health hazards from burning composites.
Book Synopsis Fiber Reinforced Polymeric Materials and Sustainable Structures by : Shamsher Bahadur Singh
Download or read book Fiber Reinforced Polymeric Materials and Sustainable Structures written by Shamsher Bahadur Singh and published by Springer Nature. This book was released on 2023-03-01 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the introduction of various kinds of advanced composite materials such as carbon fiber-reinforced polymer (CFRP), glass fiber-reinforced polymer (GFRP), aramid fiber-reinforced polymer (AFRP), and basalt fiber-reinforced polymer (BFRP). This book covers the advantages and disadvantages of these advanced composite materials. The primary advantages, such as high specific strength and stiffness, of advance composite materials result in lighter and durable structures. On the other hand, its linear elastic behavior till failure has been highlighted as the main disadvantage for their structural applications. This book also highlights the various forms in which the FRP components are tailored and stacked up to optimize its strength and stiffness to deliver the high-performance structural as well as non-structural components in its real-life application. The various forms in which FRP materials are developed are described such as uni-directional, cross-ply, angle-ply, hybrid, and functionally graded composites. In addition, various forms in which these materials stacked and/ bonded to fabricate the various structural and non-structural components are described. Most importantly, techniques to extract plant-based cellulosic fibers and its application to fabricate the various forms of sustainable composite products are described. In addition, development of nano-particle-enforced cellulosic fibers for sustainable industrial products has also been presented. Furthermore, the use of advanced composites and natural fiber-based composites has been demonstrated for repair, rehabilitation, and retrofitting of deficient structural systems. Moreover, the comprehensive overview of the state-of-the-art research on the test methods for material characterization at room and elevated temperature is presented which will be of high interest to scientists, researchers, students, and engineers working in the fields of composite materials such as FRPs and other forms of composites such as fiber-reinforced concrete (FRC). This book is also helpful for undergraduate, masters, and most importantly Ph.D. research scholars for developing their fundamental understanding on advanced composite materials and their applications in construction as well as industrial sectors.
Book Synopsis Proceedings of the 3rd RILEM Spring Convention and Conference (RSCC 2020) by : José Sena-Cruz
Download or read book Proceedings of the 3rd RILEM Spring Convention and Conference (RSCC 2020) written by José Sena-Cruz and published by Springer Nature. This book was released on 2021-07-13 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers peer-reviewed contributions presented at the 3rd RILEM Spring Convention and Conference, held at Guimarães and hosted by the University of Minho, Portugal, on March 9-14, 2020. The theme of the Conference was “Ambitioning a Sustainable Future for Built Environment: comprehensive strategies for unprecedented challenges”, which was aimed at discussing current challenges and impacts of the built environment on sustainability. The present volume is dedicated to the topic “Service life extension of existing structures”, which covers the most recent scientific and technological developments in the understanding of the evolution and degradation of construction materials and structural systems. Analytical and numerical, as well as experimental approaches, aimed at characterizing, modelling and predicting the evolution of the physical, chemical and mechanical properties of construction materials and structural systems are regarded. Multiphysics models are also considered, as well as other strategies that contribute for an accurate characterization and prediction the service life and the evolution of existing and novel construction materials under normal or extreme environmental exposure or loading conditions. New strategies to promote the smart repairing or the recovery of material properties, as well as the service life extension, are also considered. The following subtopics are included: service life models and multiphysics approaches; smart structures, innovative monitoring and intervention strategies; management and optimized maintenance strategies; integrated rehabilitation and strengthening approaches.
Book Synopsis Non-Metallic (FRP) Reinforcement for Concrete Structures by : L. Taerwe
Download or read book Non-Metallic (FRP) Reinforcement for Concrete Structures written by L. Taerwe and published by CRC Press. This book was released on 2004-06-02 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dealing with a wide range of non-metallic materials, this book opens up possibilities of lighter, more durable structures. With contributions from leading international researchers and design engineers, it provides a complete overview of current knowledge on the subject.
Book Synopsis Strengthening of Reinforced Concrete Structures by : Leonard Hollaway
Download or read book Strengthening of Reinforced Concrete Structures written by Leonard Hollaway and published by McGraw Hill Professional. This book was released on 1999-03-05 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a detailed study of the flexural strengthening of reinforced and prestressed concrete members using fibre reinforced polymer composite plates. The authors also discuss plate bonding onto other engineering materials such as steel and cast iron. The book has been designed for practising civil and structural engineers seeking to understand the principles and design technology of plate bonding, and for final year undergraduates and postgraduate engineers studying the principles of highway and bridge engineering and structural engineering.
Book Synopsis ICCS20 - 20th International Conference on Composite Structures by : Nicholas Fantuzzi
Download or read book ICCS20 - 20th International Conference on Composite Structures written by Nicholas Fantuzzi and published by Società Editrice Esculapio. This book was released on 2017-07-24 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composite materials have aroused a great interest over the last few decades, as proven by the huge number of scientific papers and industrial progress. The increase in the use of composite structures in different engineering practices justify the present international meeting where researches from every part of the globe can share and discuss the recent advancements regarding the use of structural components within advanced applications such as buckling, vibrations, repair, reinforcements, concrete, composite laminated materials and more recent metamaterials. Studies about composite structures are truly multidisciplinary and the given contributions can help other researches and professional engineers in their own field. This Conference is suitable as a reference for engineers and scientists working in the professional field, in the industry and the academia and it gives the possibility to share recent advancements in different engineering practices to the outside world. This book aims to collect selected plenary and key-note lectures of this International Conference. For this reason, the establishment of this 20th edition of International Conference on Composite Structures has appeared appropriate to continue what has been begun during the previous editions. ICCS wants to be an occasion for many researchers from each part of the globe to meet and discuss about the recent advancements regarding the use of composite structures, sandwich panels, nanotechnology, bio-composites, delamination and fracture, experimental methods, manufacturing and other countless topics that have filled many sessions during this conference. As a proof of this event, which has taken place in Paris (France), selected plenary and key-note lectures have been collected in the present book.
Download or read book FRP written by J. G. Teng and published by John Wiley & Sons. This book was released on 2002 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibre-reinforced polymer (FRP) composites are used to strengthen reinforced concrete (RC) structures. A large amount of research now exists on this. This book brings together all existing research into one volume.
Author :fib Fédération internationale du béton Publisher :fib Fédération internationale du béton ISBN 13 :9782883940543 Total Pages :178 pages Book Rating :4.9/5 (45 download)
Book Synopsis Externally Bonded FRP Reinforcement for RC Structures by : fib Fédération internationale du béton
Download or read book Externally Bonded FRP Reinforcement for RC Structures written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2001-01-01 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: In December 1996, the then CEB established a Task Group with the main objective to elaborate design guidelines for the use of FRP reinforcement in accordance with the design format of the CEB-FIP Model Code and Eurocode2. With the merger of CEB and FIP into fib in 1998, this Task Group became fib TG 9.3 FRP Reinforcement for concrete structures in Commission 9 Reinforcing and Prestressing Materials and Systems. The Task Group consists of about 60 members, representing most European universities, research institutes and industrial companies working in the field of advanced composite reinforcement for concrete structures, as well as corresponding members from Canada, Japan and USA. Meetings are held twice a year and on the research level its work is supported by the EU TMR (European Union Training and Mobility of Researchers) Network "ConFibreCrete”. The work of fib TG 9.3 is performed by five working parties (WP): Material Testing and Characterization (MT&C) Reinforced Concrete (RC) Prestressed Concrete (PC) Externally Bonded Reinforcement (EBR) Marketing and Applications (M&A) This technical report constitutes the work conducted as of to date by the EBR party. This bulletin gives detailed design guidelines on the use of FRP EBR, the practical execution and the quality control, based on the current expertise and state-of-the-art knowledge of the task group members. It is regarded as a progress report since it is not the aim of this report to cover all aspects of RC strengthening with composites. Instead, it focuses on those aspects that form the majority of the design problems. several of the topics presented are subject of ongoing research and development, and the details of some modelling approaches may be subject to future revisions. as knowledge in this field is advancing rapidly, the work of the EBR WP will continue. Inspite of this limit in scope, considerable effort has been made to present a bulletin that is today’s state-of-art in the area of strengthening of concrete structures by means of externally bonded FRP reinforcement.
Book Synopsis Eco-efficient Repair and Rehabilitation of Concrete Infrastructures by : Fernando Pacheco-Torgal
Download or read book Eco-efficient Repair and Rehabilitation of Concrete Infrastructures written by Fernando Pacheco-Torgal and published by Elsevier. This book was released on 2024-03-13 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eco-efficient Repair and Rehabilitation of Concrete Infrastructures, Second Edition provides an updated state-of-the-art review on the latest advances in this important research field. The first section is brought fully up-to-date and focuses on deterioration assessment methods. Section two contains brand new chapters on innovative concrete repair and rehabilitation materials including: fly ash-based alkali-activated repair materials for concrete exposed to aggressive environments; repairing concrete structures with alkali-activated metakaolin mortars; concrete with micro encapsulated self-healing materials; concrete repaired with bacteria; concrete structures repaired with engineered cementitious composites; concrete repaired by electrodeposition; the assessment of concrete after repair operations and durability of concrete repair. The final section has also been amended to include six new chapters on design, Life-cycle cost analysis and life-cycle assessment. These chapters include maintenance strategies for concrete structures; a comparison of different repair methods; life cycle assessment of the effects of climate change on bridge deterioration; life-cycle-cost benefits of cathodic protection of concrete structures; life-cycle cost analyses for concrete bridges exposed to chlorides and life-cycle analysis of repair of concrete pavements. The book will be an essential reference resource for materials scientists, civil and structural engineers, architects, structural designers and contractors working in the construction industry. - Presents the latest research findings on eco-efficient repair and rehabilitation of concrete infrastructures - Provides comprehensive coverage from damage detection and assessment, to repair strategies, and structural health monitoring - Diverse author base offering insights on construction practice and employed technologies worldwide - Includes a section on innovative repair and rehabilitation materials, as well as case studies on life cycle cost analysis and LCA
Book Synopsis The Effects of Elevated Temperatures on Fibre Reinforced Polymers for Strengthening Concrete Structures by : Tarek Khalifa
Download or read book The Effects of Elevated Temperatures on Fibre Reinforced Polymers for Strengthening Concrete Structures written by Tarek Khalifa and published by . This book was released on 2011 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibre reinforced polymer (FRP) materials have been a material of interest in the field of structural engineering due to their superior mechanical properties such as high strength to weight ratios and resistance to environmental degradation and corrosion. Even though research has established the material to be a viable option for construction they are highly susceptible to elevated temperatures. There are several systems available on the market and a great deal of research needs to be conducted to investigate the change in properties and different behaviour at elevated temperature to serve as a better basis for design. The main objective of this project and the experimental program presented in this thesis is to study the thermo mechanical properties of the available systems on the market. A summary of the previous research done in the area covering other materials is presented providing an introduction to the behaviour of different systems under elevated temperature. Then, two different experimental programs are presented. The first considers the glass transition temperature and thermal decomposition of the different systems and the second examines the tensile strength of the different systems under different temperature regimes. The results of both experimental programs are presented and then a connection between the thermo mechanical properties of the resins and the overall strength of the system is established. The research demonstrates that the glass transition temperature of the resin used for an FRP strengthening system is the main determinant of the performance at high temperatures.
Book Synopsis Reinforced Concrete Design with FRP Composites by : Hota V.S. GangaRao
Download or read book Reinforced Concrete Design with FRP Composites written by Hota V.S. GangaRao and published by CRC Press. This book was released on 2006-11-20 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the use of composites has increased in many industrial, commercial, medical, and defense applications, there is a lack of technical literature that examines composites in conjunction with concrete construction. Fulfilling the need for a comprehensive, explicit guide, Reinforced Concrete Design with FRP Composites presents specific informat
