Download or read book Behaviour and Modelling of RC Beams Strengthened in Flexure with Near surface Mounted FRP Strips written by Shishun Zhang and published by . This book was released on 2012 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt: Apart from investigations into the bond behaviour of NSM CFRP strips, this thesis also presents investigations into a common debonding failure mode which occurs at the ends of NSM strips and involves the detachment of the FRP reinforcement and the concrete cover (i.e. bar-end cover separation). An analytical solution is first presented for the interfacial interaction forces between the FRP reinforcement and the concrete in RC beams strengthened with NSM FRP; this solution was extended from an existing interfacial stress solution previously derived for RC beams strengthened with an externally bonded FRP plate. The analytical solution was verified with results from a 3-D linear elastic FE model. Numerical results obtained from the solution show that high interaction forces exist near the cut-off points of NSM CFRP strips, which explains why bar-end debonding failure commonly occurs. Following the study on interfacial interaction forces, a 2-D nonlinear FE model to predict bar-end cover separation failure of RC beams flexurally-strengthened with NSM FRP is presented. Some key factors, which were not addressed or were not simultaneously addressed in existing FE models, were considered in developing this FE model; in particular, the NSM FRP-to-concrete interface was modelled using the bond-slip model presented earlier in the thesis. Based on findings obtained using this 2-D FE model, a simplified FE model for predicting bar-end cover separation failure was next proposed. This simplified FE model contains only an isolated segment between two adjacent cracks of an RC beam nearest to an end of the FRP reinforcement. Results from the parametric study using this simplified FE model were used to establish an expression for the failure strain in the FRP, based on which a method for predicting bar-end cover separation failure was formulated.

Download or read book Guide for the Design and Construction of Concrete Reinforced with Fiber Reinforced Polymer Bars written by ACI Committee 440 and published by . This book was released on 2003 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Composites for Construction written by Lawrence C. Bank and published by John Wiley & Sons. This book was released on 2006-07-21 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first textbook on the design of FRP for structural engineering applications Composites for Construction is a one-of-a-kind guide to understanding fiber-reinforced polymers (FRP) and designing and retrofitting structures with FRP. Written and organized like traditional textbooks on steel, concrete, and wood design, it demystifies FRP composites and demonstrates how both new and retrofit construction projects can especially benefit from these materials, such as offshore and waterfront structures, bridges, parking garages, cooling towers, and industrial buildings. The code-based design guidelines featured in this book allow for demonstrated applications to immediately be implemented in the real world. Covered codes and design guidelines include ACI 440, ASCE Structural Plastics Design Manual, EUROCOMP Design Code, AASHTO Specifications, and manufacturer-published design guides. Procedures are provided to the structural designer on how to use this combination of code-like documents to design with FRP profiles. In four convenient sections, Composites for Construction covers: * An introduction to FRP applications, products and properties, and to the methods of obtaining the characteristic properties of FRP materials for use in structural design * The design of concrete structural members reinforced with FRP reinforcing bars * Design of FRP strengthening systems such as strips, sheets, and fabrics for upgrading the strength and ductility of reinforced concrete structural members * The design of trusses and frames made entirely of FRP structural profiles produced by the pultrusion process

Download or read book Strengthening of Reinforced Concrete Structures written by L C Hollaway and published by Elsevier. This book was released on 1999-03-05 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

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.

Download or read book Bond of Reinforcement in Concrete written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2000-01-01 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In 1993, the CEB Commission 2 Material and Behavior Modelling established the Task Group 2.5 Bond Models. It's terms of reference were ... to write a state-of-art report concerning bond of reinforcement in concrete and later recommend how the knowledge could be applied in practice (Model Code like text proposal)... {This work} covers the first part ... the state-of-art report."--Pref.

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.

Download or read book Strengthening and Rehabilitation of Civil Infrastructures Using Fibre Reinforced Polymer FRP Composites written by L C Hollaway and published by Elsevier. This book was released on 2008-07-18 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

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.

Download or read book ACI 440 2R 17 Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures written by ACI Committee 440 and published by . This book was released on 2017-04-27 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Reinforced Concrete Beams Retrofitted in Flexure Using CFRP NSM Technique written by and published by . This book was released on 2015 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: A variety of retrofitting methods are used to upgrade existing structures. For example, steel plates and Fiber Reinforced Polymer (FRP) jackets are externally bonded to members to increase their capacity in flexure and shear. However, due to the issue of corrosion these strengthening systems may lose their efficiency with time. FRP materials have been used to strengthen many structural components of different shapes and types. FRP jackets, FRP Strips, and FRP rods have commonly been used to rehabilitate existing structural components. The many advantages of using FRP as strengthening materials have made this material an attractive alternative: advantages such as lightweight, high strength, and ease of setting up. Among the many applications using FRP, Near Surface Mounted -- Fiber Reinforced polymer (NSM-FRP) is a promising technique used to strengthen concrete members. However, de-bonding issues have to be overcome to make this technique efficient and reliable. The NSM-FRP technique consists of making a groove along the surface of the concrete member to be retrofitted with depth less than the cover of the member. After cleaning the groove, epoxy paste is used to fill two-thirds of the groove's depth. The FRP element is then mounted in the groove. Finally, the groove is filled with epoxy and the excessive epoxy is leveled with surface of the concrete. This technique makes the FRP material completely covered by epoxy in the cover of the concrete. This method can be used for strengthening both the positive and negative moment regions of girders and slabs. Groove size, paste, concrete, and rods properties are the main variables that control the efficiency of the NSM-FRP rods. The main objective of this research project is to determine the behavior of reinforced concrete beams that are strengthened with NSM-CFRP reinforcement bars. In this research project, the bond characteristics of NSM-CFRP reinforcement bars are first determined from pullout tests. Then, NSM-CFRP rods are installed in reinforced concrete beams and the beams are tested. Loads, strains, and deflections are measured and theoretical and measured capacities are compared. Finally, the reliability and efficiency of using NSM-CFRP rods technique in retrofitting existing structures is observed.

Download or read book Design Procedures for the Use of Composites in Strengthening of Reinforced Concrete Structures written by Carlo Pellegrino and published by Springer. This book was released on 2015-08-25 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyses the current knowledge on structural behaviour of RC elements and structures strengthened with composite materials (experimental, analytical and numerical approaches for EBR and NSM), particularly in relation to the above topics, and the comparison of the predictions of the current available codes/recommendations/guidelines with selected experimental results. The book shows possible critical issues (discrepancies, lacunae, relevant parameters, test procedures, etc.) related to current code predictions or to evaluate their reliability, in order to develop more uniform methods and basic rules for design and control of FRP strengthened RC structures. General problems/critical issues are clarified on the basis of the actual experiences, detect discrepancies in existing codes, lacunae in knowledge and, concerning these identified subjects, provide proposals for improvements. The book will help to contribute to promote and consolidate a more qualified and conscious approach towards rehabilitation and strengthening existing RC structures with composites and their possible monitoring.

Download or read book Concrete Beams with Openings written by M. A. Mansur and published by CRC Press. This book was released on 1999-01-29 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book compiles state-of-the-art information on the behavior, analysis, and design of concrete beams containing transverse openings. Discussions include the need, effects, and classification of openings as well as the general requirements for fulfilling design pure bending, combined bending, and shear - illustrated with numerical examples torsion alone or in combination with bending and shear large rectangular openings as well as opening size and location on beam behavior methods for analyzing ultimate strength and serviceability requirements effects of torsion in beams large openings in continuous beams and their effects on possible redistribution of internal forces as well as guidelines and procedures for the design of such beams effect of prestressing on the serviceability and strength of beams with web openings design against cracking at openings and ultimate loads Concrete Beams with Openings serves as an invaluable source of information for designers and practicing engineers, especially useful since little or no provision or guidelines are currently available in most building codes.

Download or read book Flexural Strengthening of RC Continuous Beams with FRP Reinforcements According to the NSM and EB Techniques written by Mohammad Abdallah and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is composed of four parts. Each part contains several research items according to the structural topic planned to be studied. Although the logical sequence was preserved in the thesis, each part was structured to discuss and address a specific flexural issue regarding strengthening reinforced concrete (RC) beams with fiber-reinforced polymers (FRPs). In general, the thesis experimentally, analytically, and numerically studies the possibility of using near surface mounted (NSM) and externally bonded (EB) techniques for strengthening and repairing continuous two-span beams. In summary, the experimental scheme of this thesis comprised 21 beams: six beams were simply supported with a 3-m length each, and 15 beams were continuous over two spans with a 6-m total beam length and 2.85-m span length each. The analytical analysis and design approaches as well as the finite element (FE) numerical models were developed or/and utilized in some parts according to their importance and necessity.- The first part studies the possibility of strengthening RC beams on their side surfaces instead of their soffits. Therefore, the side near surface mounted (SNSM or side-NSM) technique was proposed and investigated on six simply supported beams: one control beam and five others initially strengthened with 2∅6 carbon-FRP (CFRP) bars.-The second part presents an experimental and analytical study regarding the assessment of using the NSM technique for flexural strengthening of continuous RC beams. The experimental program of this part consists of six full-scale two-span beams: one control beam and five others strengthened with FRP bars in both hogging and sagging regions.-The third part presents a comparison between the NSM and side-NSM techniques for strengthening continuous two-span RC beams with CFRP rods. The study comprises two main sections: an experimental section and a FE section.-The fourth part presents an experimental study that was primarily conducted to fill in the gaps in the literature regarding strengthening continuous RC beams with EB-CFRP. Generally, this part consists of three main sections. In the first section, seven large-scale two-span beams are statically investigated: one control beam (from part two) and six beams initially strengthened in terms of bending with CFRP sheets or plates. The second section evaluates the effectiveness of the current design codes in determining the flexural strength of continuous beams strengthened externally with CFRP sheets or plates. Finally, the third section assesses and compares the efficiencies of the EB and NSM techniques.

Download or read book Materials Design and Manufacturing for Sustainable Environment written by Santhakumar Mohan and published by Springer Nature. This book was released on 2021-02-06 with total page 909 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the select proceedings of the International Conference on Materials, Design and Manufacturing for Sustainable Environment (ICMDMSE 2020). The primary focus is on emerging materials and cutting-edge manufacturing technologies for sustainable environment. The book covers a wide range of topics such as advanced materials, vibration, tribology, finite element method (FEM), heat transfer, fluid mechanics, energy engineering, additive manufacturing, robotics and automation, automobile engineering, industry 4.0, MEMS and nanotechnology, optimization techniques, condition monitoring, and new paradigms in technology management. Contents of this book will be useful to students, researchers, and practitioners alike.

Download or read book FRP Composites for Reinforced and Prestressed Concrete Structures written by Perumalsamy Balaguru and published by CRC Press. This book was released on 2008-11-05 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: High strength fibre composites (FRPs) have been used with civil structures since the 1980s, mostly in the repair, strengthening and retrofitting of concrete structures. This has attracted considerable research, and the industry has expanded exponentially in the last decade. Design guidelines have been developed by professional organizations in a nu

Download or read book Recent Trends in Civil Engineering written by K. K. Pathak and published by Springer Nature. This book was released on 2020-09-27 with total page 1081 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the selected peer-reviewed proceedings of the International Conference on Recent Trends and Innovations in Civil Engineering (ICRTICE 2019). The volume focuses on latest research and advances in the field of civil engineering and materials science such as design and development of new environmental materials, performance testing and verification of smart materials, performance analysis and simulation of steel structures, design and performance optimization of concrete structures, and building materials analysis. The book also covers studies in geotechnical engineering, hydraulic engineering, road and bridge engineering, building services design, engineering management, water resource engineering and renewable energy. The contents of this book will be useful for students, researchers and professionals working in civil engineering.