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Bond Stress Of Lap Reinforced Concrete Beams
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Book Synopsis Bond Stress of Lap Reinforced Concrete Beams by : G. H. Emin
Download or read book Bond Stress of Lap Reinforced Concrete Beams written by G. H. Emin and published by Palala Press. This book was released on 2018-02-28 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Book Synopsis Tests of Bond Resistance Between Concrete and Steel by : Willis Appleford Slater
Download or read book Tests of Bond Resistance Between Concrete and Steel written by Willis Appleford Slater and published by . This book was released on 1920 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05) by : ACI Committee 318
Download or read book Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05) written by ACI Committee 318 and published by American Concrete Institute. This book was released on 2005 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :fib - federation internationale du beton Publisher :John Wiley & Sons ISBN 13 :3433030618 Total Pages :434 pages Book Rating :4.4/5 (33 download)
Book Synopsis fib Model Code for Concrete Structures 2010 by : fib - federation internationale du beton
Download or read book fib Model Code for Concrete Structures 2010 written by fib - federation internationale du beton and published by John Wiley & Sons. This book was released on 2013-12-04 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Federation for Structural Concrete (fib) is a pre-normative organization. 'Pre-normative' implies pioneering work in codification. This work has now been realized with the fib Model Code 2010. The objectives of the fib Model Code 2010 are to serve as a basis for future codes for concrete structures, and present new developments with regard to concrete structures, structural materials and new ideas in order to achieve optimum behaviour. The fib Model Code 2010 is now the most comprehensive code on concrete structures, including their complete life cycle: conceptual design, dimensioning, construction, conservation and dismantlement. It is expected to become an important document for both national and international code committees, practitioners and researchers. The fib Model Code 2010 was produced during the last ten years through an exceptional effort by Joost Walraven (Convener; Delft University of Technology, The Netherlands), Agnieszka Bigaj-van Vliet (Technical Secretary; TNO Built Environment and Geosciences, The Netherlands) as well as experts out of 44 countries from five continents.
Book Synopsis Analytical and Experimental Evaluation of Bond Strength of Tension Lap Splices in High Strength Concrete Wrapped with Fiber Reinforced Polymer by : Ahmad Ali Rteil
Download or read book Analytical and Experimental Evaluation of Bond Strength of Tension Lap Splices in High Strength Concrete Wrapped with Fiber Reinforced Polymer written by Ahmad Ali Rteil and published by . This book was released on 2002 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deterioration of reinforced concrete structures is increasingly becoming a serious problem facing the infrastructure worldwide. To prolong the service life of existing structures, fiber reinforced polymer (FRP) sheets are being used. On the other hand, research reported in the literature indicates that a mechanism should exists which would confine the tension lap splices in high strength concrete (HSC) in order to have a more ductile failure and to increase the capacity of the lap splice. The main objective of this research is to assess the effect of FRP wraps in improving the serviceability and ultimate response of bond-critical regions in reinforced concrete members. The lack of research reported in the literature on the effect of the FRP wraps on bond strength makes this study significant. Moreover, the research will provide important design information that facilitates the introduction of FRP into design codes and encourage the use of this new technology. To meet the objective, 10 full-scale high strength concrete beam specimen were tested. Each beam was designed with 20-mm bars spliced in a constant moment region at midspan. The variables were: FRP type (glass or carbon), number of layers of FRP (1 or 2), and the configuration of FRP wraps placed in the splice region. Results of the study indicated that FRP wraps have similar effects to those of steel fibers and transverse steel reinforcement in confining the splices in HSC beam specimen. The brittle mode of failure is modified to a more ductile one. More bar lugs along the spliced bars are allowed to participate in the stress transfer between steel and concrete, and the average splitting bond strength is increased. Finally, a new index, Ktr, f, accounting for the presence and amount of FRP confining tension lap splices in HSC beams was proposed.
Author :fib - Fédération internationale du béton Publisher :fib - Fédération internationale du béton ISBN 13 :2883941122 Total Pages :177 pages Book Rating :4.8/5 (839 download)
Book Synopsis Bond and anchorage of embedded reinforcement: Background to the fib Model Code for Concrete Structures 2010 by : fib - Fédération internationale du béton
Download or read book Bond and anchorage of embedded reinforcement: Background to the fib Model Code for Concrete Structures 2010 written by fib - Fédération internationale du béton and published by fib - Fédération internationale du béton. This book was released on 2014-05-01 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of the preparation for the fib Model Code for Concrete Structures 2010, task group 4.5 Bond Models undertook a major review of rules for bond and anchorage of reinforcement in the CEB-FIP Model Code 1990. This bulletin presents the outcome of that review, describes the rationale for the revisions and presents the evidence on which the revisions are based. The principle changes in MC2010 include raising the limit on concrete strength that may be used when determining bond resistance to 110MPa, introduction of a coefficient η4 to cater for different reinforcement Classes, and coverage of new construction materials including epoxy coated and headed bars. The format of design rules has been changed to permit more rational treatment of confinement from concrete cover and transverse reinforcement, the contribution of end hooks and bends for tension bars, and end bearing to compression laps. New guidance is provided covering a range of construction techniques and service environments and the influence of long term degradation. Analyses of various aspects of detailing on performance of laps and anchorages have resulted in discontinuation of the ‘proportion lapped’ factor α6, alterations to requirements of transverse reinforcement at laps, and have resolved inconsistencies in provisions for bundled bars between major national codes. Apparent inconsistencies in existing rules for lapped joints and anchorages and between the local bond/slip model and design rules are also resolved, thus allowing integration of application rules and modelling. Finally, the basis for an attempt to introduce simple detailing rules for laps and anchorages is described.
Book Synopsis Characteristics of Reinforced Concrete Bond at High Strain Rates by : Eric Jacques
Download or read book Characteristics of Reinforced Concrete Bond at High Strain Rates written by Eric Jacques and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the on-going intensity of research in the field of protective structural design, one topic that has been largely ignored in the literature is the effect of high strain rates on the bond between reinforcing steel and the surrounding concrete. Therefore, a comprehensive research program was undertaken to establish the effect of high strain rates on reinforced concrete bond. The experimental research consisted of the construction and testing of fourteen flexural beam-end bond specimens and twenty-five lap-spliced reinforced concrete beams. The physical and material properties of the specimens were selected based on a range of design parameters known to significantly influence bond strength. In order to establish a baseline for comparison, approximately half of the total number of specimens were subjected to static testing, while the remainder were subjected to dynamic loading generated using a shock tube. The strain rates generated using the shock tube were consistent with those obtained for mid- and far-field explosive detonation. Results of the beam-end and lap splice beam tests showed that the flexural behaviour of reinforced concrete was significantly stronger and stiffer when subjected to dynamic loading. Furthermore, the high strain rate bond strength was always greater than the corresponding low strain rate values, yielding an average dynamic increase factor (DIF) applied to ultimate bond strength of 1.28. Analysis of the low and high strain rate test results led to the development of empirical expressions describing the observed strain rate sensitivity of reinforced concrete bond for spliced and developed bars with and without transverse reinforcement. The predictive accuracy of the proposed DIF expressions was assessed against the experimental results and data from the literature. It was found that the dynamic bond strength of reinforced concrete can be predicted with reasonably good accuracy and that the proposed DIF expressions can be used for analysis and design of protective structures. An analytical method was also developed to predict the flexural load-deformation behaviour of reinforced concrete members containing tension lap splices. The analysis incorporated the effect of reinforcement slip through the use of pseudo-material stress-strain relationships, in addition to giving consideration to the effect of high strain rates on bond-slip characteristics and on the material properties of concrete and steel. A comparison of the analytical predictions with experimental data demonstrated that the proposed analysis technique can reasonably predict the flexural response of beams with tension lap splices. The results also demonstrated that the model is equally applicable for use at low- and high-strain rates, such as those generated during blast and impact.
Book Synopsis Effect of Fiber Reinforcement on Bond Strength of Tension Lap Splices in High Strength Concrete by : Ghaida' Khaled Joumaa
Download or read book Effect of Fiber Reinforcement on Bond Strength of Tension Lap Splices in High Strength Concrete written by Ghaida' Khaled Joumaa and published by . This book was released on 2000 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: To meet the objectives, 12 full-scale high strength concrete beam specimens were tested Each beam was designed with bars spliced in a constant moment region at midspan. The variables were bar size 20, 25, or 32 mm, and the amount of steel fiber reinforcement added in the splice region during casting: Vf = 0 5, 0 5, 1.0, or 2 0 %--The test results indicated that the use of steel fibers in the splice region increased the bond strength and the ductility of the mode of failure of the beam--specimens The increase in bond strength with high fiber content exceeded 3 square root fc, the maximum increase in bond strength of a reinforced concrete beam that could be achieved by using transverse reinforcement in the splice region.
Author :fib Fédération internationale du béton Publisher :fib Fédération internationale du béton ISBN 13 :9782883940505 Total Pages :448 pages Book Rating :4.9/5 (45 download)
Book Synopsis Bond of Reinforcement in Concrete by : fib Fédération internationale du béton
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.
Book Synopsis The Behavior and Strength of Lapped Splices in Reinforced Concrete Beams Subjected to Cyclic Loading by : Anthony Daniel Tocci
Download or read book The Behavior and Strength of Lapped Splices in Reinforced Concrete Beams Subjected to Cyclic Loading written by Anthony Daniel Tocci and published by . This book was released on 1981 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Behavior of Lapped Splices in Reinforced Concrete Beams Subjected to Repeated Loads by : Fernando Enrique Fagundo
Download or read book The Behavior of Lapped Splices in Reinforced Concrete Beams Subjected to Repeated Loads written by Fernando Enrique Fagundo and published by . This book was released on 1979 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guide for the Design and Construction of Concrete Reinforced with Fiber-Reinforced Polymer Bars by : ACI Committee 440
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:
Book Synopsis Tests of Heavily Reinforced Concrete Slab Beams by : Willis Appleford Slater
Download or read book Tests of Heavily Reinforced Concrete Slab Beams written by Willis Appleford Slater and published by . This book was released on 1923 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bond stress distribution in concrete beams and eccentric pullout specimens by : Erwin Sewell Perry
Download or read book Bond stress distribution in concrete beams and eccentric pullout specimens written by Erwin Sewell Perry and published by . This book was released on 1961 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Compression and Tension Lap Splices in Reinforced Concrete Members Subjected to Inelastic Cyclic Loading by : Nader Panahshahi
Download or read book Compression and Tension Lap Splices in Reinforced Concrete Members Subjected to Inelastic Cyclic Loading written by Nader Panahshahi and published by . This book was released on 1987 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Fiber Reinforcement on Bond Strength of Lap Splices in Normal and High Strength Concrete Under Cyclic (Seismic) Loading by : Omar Samir Gharzuddine
Download or read book Effect of Fiber Reinforcement on Bond Strength of Lap Splices in Normal and High Strength Concrete Under Cyclic (Seismic) Loading written by Omar Samir Gharzuddine and published by . This book was released on 2005 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the more frequent use of FRC in earthquake resistant structures as a means for improving energy absorption and dissipation capacity, understanding the infl uence of steel fiber reinforcement on the bond strength between steel bars and c oncrete becomes of particular interest. While several experimental and analytical studies have concentrated on the bond characteristics under static load conditions, data on the bond stress characteri stics of steel bars in plain concrete or concrete applied with steel fiber reinf orcement is still very limited, particularly when the mode of bond failure is by splitting. This shortage of data makes it difficult at present to establish gen eral recommendations for computing the minimum volume of steel-fiber reinforceme nt needed to improve the seismic performance of reinforced beams, taking into ac count the bond parameters of the beam spliced reinforcement and the distribution of this reinforcement in the section. Experimentally investigating the bond cha racteristics of reinforcing steel bars embedded in FRC under seismic loading for better understanding of the mechanism by which fiber reinforcement improves the bond strength and seismic performance of spliced bars in tension constitutes th e primary objective of this proposed investigation. Also based on the results of this investigation, the main parameters that influence the response will be eva luated and discussed, and existing models for predicting the bond strength will be further validated or refined. To meet the objectives, 12 full-scale normal and high strength concrete beam spe cimens were tested. Each beam was designed with bar splices (20db) placed in a c onstant moment region at midspan. No transverse reinforcement will used in the s plice region. The design variables were the bar size (20 and 25 mm), ratio of co ncrete cover to bar diameter (c/db of 2.0 and 1.4), and the volume of fraction o f fibers (Vf = 0.0%, 0.5%, 1.0%, 1.5%). The test results indicated that the use of steel fibers in the splice region inc reased the ultimate load capacity, bond strength, reduced bond deterioration, im proved ductility, increased energy absorption capacity and also verified in part the equation proposed by Harajli and Mabsout2000 that accounts for the increase in bond strength of beams due to the presence of fibers.
Book Synopsis The Fatigue Behaviour of Tension Lap Spliced Reinforced Concrete Beams Strengthened with Fibre Reinforced Polymer Wrapping by : Rayed Alyousef
Download or read book The Fatigue Behaviour of Tension Lap Spliced Reinforced Concrete Beams Strengthened with Fibre Reinforced Polymer Wrapping written by Rayed Alyousef and published by . This book was released on 2016 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many reinforced concrete structures containing lap splices were constructed before modern bond and fatigue design codes came into existence and are subjected to fatigue loading, which may lead to a bond failure even when the applied load is far below the ultimate load for a bond failure under a monotonic loading. Fatigue loads result in a deterioration of the bond interaction between the steel and concrete and interrupt the force transfer mechanism resulting in an increased deflection, an increased number of cracks and their widths, and a decreased load carrying capacity of reinforced concrete elements of structures. Some of these structures require strengthening to enhance their bond strength at lap splices. This study was aimed at increasing our understanding of the behaviour of the bond between the steel bar and the concrete along the lap splice region for structures subjected to cyclic loading. An additional aim of the study was to investigate the effect of fatigue loading on the bond between concrete and steel, and the ability of the new high and low modulus fiber-reinforced polymer (FRP) sheets to enhance the fatigue performance of a tension lap splice.
