Flexural Behavior Of Rc Beams Strengthened With Externally Bonded Cfrp Under Cyclic Loading

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Flexural Behavior of RC Beams Strengthened with Externally Bonded CFRP Under Cyclic Loading

Author : Mohammad Ahmad Salameh Qaralleh
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (113 download)

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Book Synopsis Flexural Behavior of RC Beams Strengthened with Externally Bonded CFRP Under Cyclic Loading by : Mohammad Ahmad Salameh Qaralleh

Download or read book Flexural Behavior of RC Beams Strengthened with Externally Bonded CFRP Under Cyclic Loading written by Mohammad Ahmad Salameh Qaralleh and published by . This book was released on 2018 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fifteen percent of the approximately 600,000 bridges in the United States are classified as structurally deficient. In addition, the average age of the reported cases of failure of bridges is less than half of its original service life. The deterioration of the health of bridges due to the environmental and other causes raises a red flag for engineers. Fiber reinforced polymers (FRP) composites gained attention in many fields, as well as, civil engineering field. This is because of the superior properties of FRP composites, such as: high specific strength (strength to density ratio), high specific stiffness (modulus to density ratio), low density, corrosion resistance, long fatigue life, environmental stability, ease of installation, and life-cycle cost effectiveness. Using FRP for strengthening and rehabilitation of reinforced concrete (RC) elements started in the 1980s. The technique of externally bonding FRP sheets to the soffit of RC beams has proven to increase the strength significantly. The behavior of such strengthened RC beams under monotonic loading is well documented and the design guidelines are rather becoming mature. However, the fatigue performance of these beams is lacking and needs more investigation. This work aims at further investigating and provide a better understanding of the fatigue behavior of RC beams strengthened with externally bonded FRP composites. This work will also include presenting the relevant literature to understand the properties of the constituent materials. This work will also focus on developing a procedure to predict the fatigue life of RC beams strengthened with externally bonded FRP. The experimental element of this study will investigate the effect of different factors on the fatigue life such as: variable loading, mean stress, and damage accumulation. The experimental work includes testing eight (8) RC beams with dimensions of: 152.4 mm in width, 152.4 mm in depth, and 1,219 mm in span length. The beams were strengthened by attaching carbon FRP sheets to their soffits. One beam was tested under monotonic loading to serve as a control. A reference beam was tested under constant amplitude fatigue loading. Four beams tested under fatigue loading that contains periodic overloading equals to 10% of the total fatigue life of the beam. Two loading-overloading regimes were used, namely: 9-1, and 900-100. Lastly, 2 beams were tested under constant amplitude loading with different mean stresses. A linear variable displacement transducer (LVDT) and 5 strain gages were used for recording the deflection and strains in the rebars and FRP, respectively. The effect of the stiffness degradation on the classical beam theory was examined using 68 RC beams strengthened with externally bonded FRP reported in the literature. The theoretical calculations of the stress levels in the primary steel are in agreement with the experimental reported values. Thus, the effect of the stiffness degradation of the beam under fatigue loading is negligible. In addition, a new S-N curve was developed based on a combination of the analytical stress ranges and the experimental fatigue life of the literature data points. When the experimental results of this study compared with the reference beam and the literature, the results show that periodic overloading reduces the fatigue life of the strengthened beams. The Palmegren-Miner rule of linear cumulative damage overestimates the fatigue life of beams undergo variable fatigue loading. The location of the steel rupture for the beams tested under fatigue with periodic overloading is different than beams tested under constant amplitude fatigue. This indicates that periodic overloading alters the distribution of the stresses and increases the effect of the shear stress. A model for predicting the fatigue life based on the loading and overloading stress ranges in the steel is presented in this study. Fatigue loading with higher mean stress either with the same or less stress range did not reduce the fatigue life of the beams.

Flexural Behavior of Reinforced Concrete Beams Strengthened with Externally Bonded Hybrid Systems

Author : Abubakr Ahmed Abdelall Mohammed
Publisher :
ISBN 13 :
Total Pages : 116 pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Flexural Behavior of Reinforced Concrete Beams Strengthened with Externally Bonded Hybrid Systems by : Abubakr Ahmed Abdelall Mohammed

Download or read book Flexural Behavior of Reinforced Concrete Beams Strengthened with Externally Bonded Hybrid Systems written by Abubakr Ahmed Abdelall Mohammed and published by . This book was released on 2017 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The demand for strengthening of aging reinforced concrete (RC) structures are continuously rising. Carbon fiber reinforced polymers (CFRP) are the most widely used externally bonded-reinforcing (EBR) materials for strengthening and retrofitting of RC structural members. The use of high strength galvanized steel mesh (GSM) strengthening material has recently gained some acceptance. However, Both CFRP and GSM have high strength but have low ductility. Recently developed aluminum alloys (AA) have high ductility and some desirable characteristics that may overcome some of the shortcomings of CFRP and GSM. Combining AA with CFRP and GSM will result in a hybrid material with balanced strength and ductility. Therefore, the major aim of this research is to develop a hybrid ductile and strong retrofitting system by combining AA plates with GSM and CFRP laminates to strengthen RC beams in flexure. A comprehensive experimental program was carried out to determine the tensile strength and the bond strength of the hybrid system. Fifteen-coupon specimens were tested for tensile strength, six specimens of concrete prisms for bond strength and 25 T-beam specimens for flexural strength under a four-point loading. Results showed an increase in the flexural capacity of the strengthened specimen ranging from 10% to 77% compared to the control beam and a decline in ductility of 13% to 59% compared to the un-strengthened specimen. Furthermore, analytical models based on ACI 440.2R-08 guidelines were employed to capture the flexural behavior of the tested specimens. Experimental results correlated well with the analytical predictions in a range of 30% of the experimental values. The study concluded that the newly proposed hybrid systems are promising systems for the improvement of the flexural behavior (strength and ductility) of RC beams."--Abstract.

Flexural Behavior of Reinforced Concrete Beams Externally Bonded with CFRP Sheets

Author : Yue Zhang
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (524 download)

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Book Synopsis Flexural Behavior of Reinforced Concrete Beams Externally Bonded with CFRP Sheets by : Yue Zhang

Download or read book Flexural Behavior of Reinforced Concrete Beams Externally Bonded with CFRP Sheets written by Yue Zhang and published by . This book was released on 2003 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Externally Bonded FRP Reinforcement for RC Structures

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)

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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.

Strengthening Design of Reinforced Concrete with FRP

Author : Hayder A. Rasheed
Publisher : CRC Press
ISBN 13 : 1482235595
Total Pages : 246 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Strengthening Design of Reinforced Concrete with FRP by : Hayder A. Rasheed

Download or read book Strengthening Design of Reinforced Concrete with FRP written by Hayder A. Rasheed and published by CRC Press. This book was released on 2014-12-16 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strengthening Design of Reinforced Concrete with FRP establishes the art and science of strengthening design of reinforced concrete with fiber-reinforced polymer (FRP) beyond the abstract nature of the design guidelines from Canada (ISIS Canada 2001), Europe (FIB Task Group 9.3 2001), and the United States (ACI 440.2R-08). Evolved from thorough cla

Cyclic Loading Behavior of CFRP-Wrapped Non-Ductile Reinforced Concrete Beam-Column Joints

Author :
Publisher :
ISBN 13 :
Total Pages : 189 pages
Book Rating : 4.:/5 (979 download)

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Book Synopsis Cyclic Loading Behavior of CFRP-Wrapped Non-Ductile Reinforced Concrete Beam-Column Joints by :

Download or read book Cyclic Loading Behavior of CFRP-Wrapped Non-Ductile Reinforced Concrete Beam-Column Joints written by and published by . This book was released on 2016 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Use of fiber reinforced polymer (FRP) material has been a good solution for many problems in many fields. FRP is available in different types (carbon and glass) and shapes (sheets, rods, and laminates). Civil engineers have used this material to overcome the weakness of concrete members that may have been caused by substandard design or due to changes in the load distribution or to correct the weakness of concrete structures over time specially those subjected to hostile weather conditions. The attachment of FRP material to concrete surfaces to promote the function of the concrete members within the frame system is called Externally Bonded Fiber Reinforced Polymer Systems. Another common way to use the FRP is called Near Surface Mounted (NSM) whereby the material is inserted into the concrete members through grooves within the concrete cover. Concrete beam-column joints designed and constructed before 1970s were characterized by weak column-strong beam. Lack of transverse reinforcement within the joint reign, hence lack of ductility in the joints, and weak concrete could be one of the main reasons that many concrete buildings failed during earthquakes around the world. A technique was used in the present work to compensate for the lack of transverse reinforcement in the beam-column joint by using the carbon fiber reinforced polymer (CFRP) sheets as an Externally Bonded Fiber Reinforced Polymer System in order to retrofit the joint region, and to transfer the failure to the concrete beams. Six specimens in one third scale were designed, constructed, and tested. The proposed retrofitting technique proved to be very effective in improving the behavior of non-ductile beam-column joints, and to change the final mode of failure. The comparison between beam-column joints before and after retrofitting is presented in this study as exhibited by load versus deflection, load versus CFRP strain, energy dissipation, and ductility.

Study of the Flexural Behavior of Reinforced Concrete Beams Strengthened by Externally Bonded Fiber Reinforced Polymeric (FRP) Laminates

Download Study of the Flexural Behavior of Reinforced Concrete Beams Strengthened by Externally Bonded Fiber Reinforced Polymeric (FRP) Laminates PDF Online Free

Author : María del Mar López Acevedo
Publisher :
ISBN 13 :
Total Pages : 430 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Study of the Flexural Behavior of Reinforced Concrete Beams Strengthened by Externally Bonded Fiber Reinforced Polymeric (FRP) Laminates by : María del Mar López Acevedo

Download or read book Study of the Flexural Behavior of Reinforced Concrete Beams Strengthened by Externally Bonded Fiber Reinforced Polymeric (FRP) Laminates written by María del Mar López Acevedo and published by . This book was released on 2000 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Structural Time-dependent Deflection and Flexural Behavior of CFRP Laminated RC Beams

Author : Md. Habibur Rahman Sobuz
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (943 download)

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Book Synopsis Structural Time-dependent Deflection and Flexural Behavior of CFRP Laminated RC Beams by : Md. Habibur Rahman Sobuz

Download or read book Structural Time-dependent Deflection and Flexural Behavior of CFRP Laminated RC Beams written by Md. Habibur Rahman Sobuz and published by . This book was released on 2012 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the use of Fiber Reinforced Polymers (FRP) as externally bonded reinforcement has gained widespread acceptance as an innovative technique for the maintenance, rehabilitation and upgrading of existing or newly build reinforced concrete structures. The aim of this thesis is to gain a proper understanding of the structural behavior of reinforced concrete beam strengthened with multi-layered CFRP laminates.

Flexural Performance of Reinforced Concrete Beams Externally Strengthened with Carbon and Basalt FRP Sheets

Author : Sahar Samir Choobbor
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (953 download)

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Book Synopsis Flexural Performance of Reinforced Concrete Beams Externally Strengthened with Carbon and Basalt FRP Sheets by : Sahar Samir Choobbor

Download or read book Flexural Performance of Reinforced Concrete Beams Externally Strengthened with Carbon and Basalt FRP Sheets written by Sahar Samir Choobbor and published by . This book was released on 2015 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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.

Fatigue Performance of RC Beams Strengthened with Near Surface Mounted CFRP Composites

Author : Tamer Ghaith Mousa Eljufout
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (113 download)

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Book Synopsis Fatigue Performance of RC Beams Strengthened with Near Surface Mounted CFRP Composites by : Tamer Ghaith Mousa Eljufout

Download or read book Fatigue Performance of RC Beams Strengthened with Near Surface Mounted CFRP Composites written by Tamer Ghaith Mousa Eljufout and published by . This book was released on 2019 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridges have a fundamental role in improving the effectiveness of highways and providing an expedient and express traffic system. Over time, Reinforced Concrete (RC) bridges degrade due to gradually increased traffic loads and environmental deteriorations. Subsequently, service loads might cause higher stresses in concrete and steel reinforcement than stresses considered in the design stage. This affects the structural performance of RC beams and leads to sudden fatigue failure. As such, there is an essential need for rehabilitation to avoid hazards and tragedies. Carbon Fiber Reinforced Polymer (CFRP) composites are becoming widely used to strengthen RC bridges. Near Surface Mounted (NSM) technique has proven its advantages over other applied strengthening techniques. This study investigates several factors associated with the fatigue performance of RC beams strengthened with NSM CFRP reinforcement, such as: the effect of strengthening techniques on the fatigue limit of RC beams; the influence of loading history on the fatigue behavior of rehabilitated RC beams; the development of deflections, stiffness degradation, and energy dissipation of strengthened RC beams under different loading patterns; and the viability of an accelerated fatigue approach for developing a fatigue stress-life predication model of RC beams. Analytical, experimental, and numerical analyses were performed to achieve the study’s objectives. Empirical fatigue stress-life prediction models for non-strengthened and strengthened RC beams were developed based on least-squares regressions of eighty experimental data points obtained from the literature. The proposed models have a satisfactory precision for design purposes. The experimental program in this study includes eleven cast-in-place RC beams with dimensions of 152.4 × 152.4 × 1,521 mm. Specimens were tested under four-point bending configuration to simulate long-span RC beams. Monotonic tests were performed to determine the flexural static capacity, ductility index, and cracking patterns of non-strengthened and strengthened RC beams. The effect of CFRP strengthening techniques on the fatigue limit of RC beams was examined using Locati method. A non-strengthened RC beam, a RC beam strengthened with NSM CFRP reinforcement, and a RC beam strengthened with Externally Bonded (EB) CFRP sheet were tested under a step-like constant amplitude cyclic loading to failure. Accordingly, CFRP strengthening techniques increase the fatigue limit of RC beams and improve their fatigue responses. Strengthened RC beams showed less stiffness degradation and energy dissipation when compared to non-strengthened RC beams. NSM CFRP technique demonstrated a better flexural static strength and fatigue life than EB CFRP technique. Six RC beams were tested to investigate the influence of loading history on the fatigue behavior of rehabilitated RC beams. Two of the six RC beams were strengthened with NSM CFRP reinforcement and tested as a reference under constant amplitude cyclic load. To simulate the condition of service traffic loading, the other four RC beams were cyclically pre-loaded then rehabilitated with NSM CFRP reinforcement. These specimens were tested under the same loading conditions of the reference specimens. The rehabilitated pre-fatigued RC beams had stiffness degradation and failure modes similar to the reference specimens. The pre-fatigue induced an under-stressing effect that extends the fatigue life of the rehabilitated RC beams. Moreover, the post-fatigue monotonic behavior of the rehabilitated RC beams showed an increase in the elastic modulus and a decrease in ductility within the flexural static capacity. Finally, numerical analyses were performed to predict the fatigue responses of RC beams strengthened with NSM CFRP reinforcement, and to check the viability of an accelerated fatigue approach for developing a fatigue stress-life predication model. The accelerated fatigue loading has a higher rate of damage accumulation than the standard testing approach. The developed model fits the upper 95% prediction band of RC beams tested under constant amplitude cyclic loading.

Behaviour of Rc Beams Retrofitted/Repaired in Shear with Frp

Author : Hasan Nikopour
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659384295
Total Pages : 132 pages
Book Rating : 4.3/5 (842 download)

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Book Synopsis Behaviour of Rc Beams Retrofitted/Repaired in Shear with Frp by : Hasan Nikopour

Download or read book Behaviour of Rc Beams Retrofitted/Repaired in Shear with Frp written by Hasan Nikopour and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to explore the shear behaviour of externally Fibre-Reinforced Polymer (FRP) bonded reinforced concrete beams under quasi-static or monotonic loading. The effects of key parameters such as the shear span to effective depth ratio, FRP type and scheme, and stiffness of FRP sheets on shear behaviour aspects such as the ultimate load capacity, deflection, crack pattern, mode of failure, and final strain in the FRP sheets are presented. This book consists of two main phases incorporating experimental and numerical parts. In the experimental part, six beams were tested using different types of FRP sheets under quasi-static cyclic load and then three of these beams were repaired using epoxy injection along with new CFRP sheets and retested. The Genetic Algorithms (GAs) approach was used to develop simple, yet more accurate, formulas for predicting the ultimate load of RC beams under monotonic loading based on experimental data found in the open literature. Considerable improvement of the ultimate shear capacity of beams retrofitted using externally bonded hybrid FRP sheets was observed.

Reinforced Concrete Deep Beams

Author : F K Kong
Publisher : CRC Press
ISBN 13 : 0203034880
Total Pages : 305 pages
Book Rating : 4.2/5 (3 download)

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Book Synopsis Reinforced Concrete Deep Beams by : F K Kong

Download or read book Reinforced Concrete Deep Beams written by F K Kong and published by CRC Press. This book was released on 1991-05-01 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

FRP

Author : J. G. Teng
Publisher : John Wiley & Sons
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis FRP by : J. G. Teng

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.

Monotonic and Fatigue Flexural Behaviour of RC Beams Strengthened with Prestressed NSM CFRP Rods

Author : Moataz Assad Badawi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (13 download)

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Book Synopsis Monotonic and Fatigue Flexural Behaviour of RC Beams Strengthened with Prestressed NSM CFRP Rods by : Moataz Assad Badawi

Download or read book Monotonic and Fatigue Flexural Behaviour of RC Beams Strengthened with Prestressed NSM CFRP Rods written by Moataz Assad Badawi and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Inelastic Analysis of Structures

Author : Milan Jirasek
Publisher : John Wiley & Sons
ISBN 13 : 9780471987161
Total Pages : 770 pages
Book Rating : 4.9/5 (871 download)

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Book Synopsis Inelastic Analysis of Structures by : Milan Jirasek

Download or read book Inelastic Analysis of Structures written by Milan Jirasek and published by John Wiley & Sons. This book was released on 2001-12-21 with total page 770 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hat ein Werkstoff seine Elastizitatsgrenze erreicht, so verhalt er sich inelastisch. Ingenieure und Designer mussen wissen, mit welchen Eigenschaften dann zu rechnen ist. Dieser Band vermittelt Ihnen den aktuellen Wissensstand auf dem Gebiet des plastischen Verhaltens und der plastischen Zug-Spannungs-Beziehungen. Behandelt werden in erster Linie Baustoffe, vor allem Stahl, aber auch Beton und Boden. Eine ausgewogene Mischung aus qualitativer Diskussion und mathematischer Theorie! (05/00)

Retrofitting of Concrete Structures by Externally Bonded FRPs, With Emphasis on Seismic Applications

Author : fib Fédération internationale du béton
Publisher : fib Fédération internationale du béton
ISBN 13 : 9782883940758
Total Pages : 234 pages
Book Rating : 4.9/5 (47 download)

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Book Synopsis Retrofitting of Concrete Structures by Externally Bonded FRPs, With Emphasis on Seismic Applications by : fib Fédération internationale du béton

Download or read book Retrofitting of Concrete Structures by Externally Bonded FRPs, With Emphasis on Seismic Applications written by fib Fédération internationale du béton and published by fib Fédération internationale du béton. This book was released on 2006-01-01 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: fib Bulletin 35 is the first bulletin to publish documentation from an fib short course. These courses are held worldwide and cover advanced knowledge of structural concrete in general, or specific topics. They are organized by fib and given by internationally recognized experts in fib, often supplemented with local experts active in fib. They are based on the knowledge and expertise from fib's ten Commissions and nearly fifty Task Groups. fib Bulletin 35 presents the course materials developed for the short course "Retrofitting of Concrete Structures through Externally Bonded FRP, with emphasis on Seismic Applications", given in Ankara and Istanbul in June 2005. The course drew on expertise both from outside Turkey and from the large pool of local experts on this subject. In most countries of the world, the building stock is ageing and needs continuous maintenance or repair. Moreover, the majority of existing constructions are deficient in the light of current knowledge and design codes. The problem of structural deficiency of existing constructions is especially acute in seismic regions, as, even there, seismic design of structures is relatively recent. The direct and indirect costs of demolition and reconstruction of structurally deficient constructions are often prohibitive; furthermore they entail a substantial waste of natural resources and energy. Therefore, structural retrofitting is becoming increasingly widespread throughout the world. Externally bonded Fibre Reinforced Polymers (FRPs) are rapidly becoming the technique of choice for structural retrofitting. They are cleaner and easier to apply than conventional retrofitting techniques, reduce disruption to the occupancy and operation of the facility, do not generate debris or waste, and reduce health and accident hazards at the construction site as well as noise and air pollution in the surroundings. fib Bulletin 35 gives state-of-the-art coverage of retrofitting through FRPs and presents relevant provisions from three recent standardisation milestones: EN 1998-3:2005 "Eurocode 8: Design of structures for earthquake resistance - Part 3: Assessment and retrofitting of buildings", the 2005 Draft of the Turkish seismic design code, and the Italian regulatory document CNR-DT 200/04, "Instructions for Design, Execution and Control of Strengthening Interventions by Means of Fibre-Reinforced Composites" (2004).

Structures Strengthened with Bonded Composites

Author : Zhishen Wu
Publisher : Woodhead Publishing
ISBN 13 : 0128210893
Total Pages : 558 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Structures Strengthened with Bonded Composites by : Zhishen Wu

Download or read book Structures Strengthened with Bonded Composites written by Zhishen Wu and published by Woodhead Publishing. This book was released on 2020-07-15 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structures Strengthened with Bonded Composites presents a comprehensive resource on the strengthening of concrete, reinforced and prestressed concrete, masonry, steel and other composite structures using externally-bonded FRP composites. The book emphasizes a systematic and fundamental investigation on bonding and debonding behavior of the FRP-concrete interface and structural performances of FRP-strengthened structures with a combination of experimental, theoretical and numerical studies. This book will appeal to all those concerned with strengthening and retrofitting of existing structures from the effect of additional anticipated loads in the civil sector. Discusses the FRP strengthening of different types of structures, including bridges, tunnels, buildings, historic structures and underwater constructions Establishes a systematic theory on interfacial fracture mechanics and clarifies different debonding mechanisms Describes design methods and makes comparison of design considerations and methods among different countries Presents temperature and fatigue effects and long-term behavior for different strengthening methods