Use Of Steel Fiber Reinforced Concrete For Blast Resistant Design
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Use Of Steel Fiber Reinforced Concrete For Blast Resistant Design
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Author : Deidra Kalman
language : en
Publisher:
Release Date : 2010
Use Of Steel Fiber Reinforced Concrete For Blast Resistant Design written by Deidra Kalman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Reinforced concrete is a common building material used for blast resistant design. Adding fibers to reinforced concrete enhances the durability and ductility of concrete. This report examines how adding steel fibers to reinforced concrete for blast resistant design is advantageous. An overview of the behavior of blasts and goals of blast resistant design, and advantages of reinforced concrete in blast-resistant design, which include mass and the flexibility in detailing, are included in the blast resistant design section. The common uses for fiber-reinforced concrete, fiber types, and properties of fiber reinforced concrete varying with fiber type and length, and concrete strength are discussed in the fiber-reinforced concrete section. Two studies, Very High-Strength Concrete for Use in Blast-and-Penetration Resistant Structures and Blast Testing of Ultra-High Performance Fiber and FRP-Retrofitted Concrete Slabs, are reviewed. Lastly, the cost, mixing and corrosion limitations of using steel fiber-reinforced concrete are discussed. Reinforced concrete has been shown to be a desirable material choice for blast resistant design. The first step to designing a blast resistant reinforced concrete structure is to implement proper detailing to ensure that structural failures will be contained in a way that preserves as many lives as possible. To design for the preservation of lives, a list of priorities must be met. Preventing the building from collapse is the first of these priorities. Adding steel fibers to concrete has been shown to enhance the concrete's post-crack behavior, which correlates to this priority. The second priority is reducing flying debris from a blast. Studies have shown that the failure mechanisms of steel fiber reinforced concrete aid in reducing flying debris when compared to conventional reinforced concrete exposed to blast loading. The major design considerations in designing steel fiber reinforced concrete for blast resistant design include: the strength level of the concrete with fiber addition, fiber volume, and fiber shape. As research on this topic progresses, the understanding of these factors and how they affect the strength characteristics of the concrete will increase, and acceptance into the structural design industry through model building codes may be possible.
The Use Of Steel Fiber Reinforced Concrete In Containment And Explosive Resistant Structures
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Author : Charles H. Henager
language : en
Publisher:
Release Date : 1983
The Use Of Steel Fiber Reinforced Concrete In Containment And Explosive Resistant Structures written by Charles H. Henager and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
The results of several investigations of steel fiber reinforced concrete (SFRC) under explosive loading are presented. Tests using high explosives were performed by the U.S. Corps of Engineers to compare reinforced concrete slabs using conventional concrete to similar slabs using SFRC. The conventional slabs containing SFRC retained their integrity even though severely damaged. Similar results were obtained with explosive tests on slabs by Lawrence Livermore Laboratory, impact loading by a pendulum-type impact machine, ballistic impact by small arms fire, impulsive loading on beams and a drop weight impact test. Use of SFRC in a reactor containment structure is reviewed. Design aids and potential applications of SFRC for blast resistance in structures are listed. (Author).
Structural Applications Of Steel Fiber Reinforced Concrete Analysis And Design
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Author : Abdeslam Reklaoui
language : en
Publisher:
Release Date : 1988
Structural Applications Of Steel Fiber Reinforced Concrete Analysis And Design written by Abdeslam Reklaoui and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Fiber-reinforced concrete categories.
Performance Of Steel Fibre Reinforced Concrete Columns Under Shock Tube Induced Shock Wave Loading
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Author : Russell P. Burrell
language : en
Publisher:
Release Date : 2012
Performance Of Steel Fibre Reinforced Concrete Columns Under Shock Tube Induced Shock Wave Loading written by Russell P. Burrell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Blast effect categories.
It is important to ensure that vulnerable structures (federal and provincial offices, military structures, embassies, etc) are blast resistant to safeguard life and critical infrastructure. In the wake of recent malicious attacks and accidental explosions, it is becoming increasingly important to ensure that columns in structures are properly detailed to provide the ductility and continuity necessary to prevent progressive collapse. Research has shown that steel fibre reinforced concrete (SFRC) can enhance many of the properties of concrete, including improved post-cracking tensile capacity, enhanced shear resistance, and increased ductility. The enhanced properties of SFRC make it an ideal candidate for use in the blast resistant design of structures. There is limited research on the behaviour of SFRC under high strain rates, including impact and blast loading, and some of this data is conflicting, with some researchers showing that the additional ductility normally evident in SFRC is absent or reduced at high strain loading. On the other hand, other data indicates that SFRC can improve toughness and energy-absorption capacity under extreme loading conditions. This thesis presents the results of experimental research involving tests of scaled reinforced concrete columns exposed to shock wave induced impulsive loads using the University of Ottawa Shock Tube. A total of 13 half-scale steel fibre reinforced concrete columns, 8 with normal strength steel fibre reinforced concrete (SFRC) and 5 with an ultra high performance fibre reinforced concrete (UHPFRC), were constructed and tested under simulated blast pressures. The columns were designed according to CSA A23.3 standards for both seismic and non-seismic regions, using various fibre amounts and types. Each column was exposed to similar shock wave loads in order to provide direct comparisons between seismic and non-seismically detailed columns, amount of steel fibres, type of steel fibres, and type of concrete. The dynamic response of the columns tested in the experimental program is predicted by generating dynamic load-deformation resistance functions for SFRC and UHPFRC columns and using single degree of freedom dynamic analysis software, RCBlast. The analytical results are compared to experimental data, and shown to accurately predict the maximum mid-span displacements of the fibre reinforced concrete columns under shock wave loading.
Performance Of Ultra High Performance Fiber Reinforced Concrete Columns Under Blast Loading
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Author : Frederic Dagenais
language : en
Publisher:
Release Date : 2016
Performance Of Ultra High Performance Fiber Reinforced Concrete Columns Under Blast Loading written by Frederic Dagenais and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Design And Testing Of A Blast Resistant Reinforced Concrete Slab System
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Author : Marvin E. Criswell
language : en
Publisher:
Release Date : 1972
Design And Testing Of A Blast Resistant Reinforced Concrete Slab System written by Marvin E. Criswell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Blast effect categories.
The objectives of the investigation were to design and model test a blast-resistant reinforced concrete slab system serving as the roof of a basement shelter area. The slab system was designed to offer sufficient radiation and blast protection to insure a survival probability for its occupants of 85 to 95 percent for a fa 15-psi airblast overpressure loading. Static and dynamic tests were conducted on two 1/4-scale models of a prototype shelter. The prototype shelter, as designed, has a reinforced concrete flat slab roof consisting of three 18-foot spans in each direction supported by four interior columns and by a continuous wall around the perimeter. The model included the perimeter walls and different panel configurations which would influence the load-carrying capacity of the prototype structure. The slab system was designed using the empirical method of the 1963 American Concrete Institute Code with modifications to account for the dynamic loading effects. (Author).
Design Considerations For Steel Fiber Reinforced Concrete
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Author : ACI Committee 544
language : en
Publisher:
Release Date : 1994
Design Considerations For Steel Fiber Reinforced Concrete written by ACI Committee 544 and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Construcciones de concreto categories.
Design Considerations For Steel Fiber Reinforced Concrete
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Author : American Concrete Institute
language : en
Publisher:
Release Date : 1988
Design Considerations For Steel Fiber Reinforced Concrete written by American Concrete Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Fiber-reinforced concrete categories.
Design Of Concrete Structures Using High Strength Steel Reinforcement
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Author : Bahram M. Shahrooz
language : en
Publisher: Transportation Research Board
Release Date : 2011
Design Of Concrete Structures Using High Strength Steel Reinforcement written by Bahram M. Shahrooz and has been published by Transportation Research Board this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Science categories.
TRB's National Cooperative Highway Research Program (NCHRP) Report 679: Design of Concrete Structures Using High-Strength Steel Reinforcement evaluates the existing American Association of State Highway and Transportation Officials (AASHTO) Load and Resistance Factor Design (LRFD) Bridge Design Specifications relevant to the use of high-strength reinforcing steel and other grades of reinforcing steel having no discernible yield plateau. The report also includes recommended language to the AASHTO LRFD Bridge Design Specifications that will permit the use of high-strength reinforcing steel with specified yield strengths not greater than 100 ksi. The Appendixes to NCHRP Report 679 were published online.
Steel Fiber Reinforced Concrete
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Author : Harvinder Singh
language : en
Publisher: Springer
Release Date : 2016-10-26
Steel Fiber Reinforced Concrete written by Harvinder Singh and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-10-26 with Technology & Engineering categories.
This book discusses design aspects of steel fiber-reinforced concrete (SFRC) members, including the behavior of the SFRC and its modeling. It also examines the effect of various parameters governing the response of SFRC members in detail. Unlike other publications available in the form of guidelines, which mainly describe design methods based on experimental results, it describes the basic concepts and principles of designing structural members using SFRC as a structural material, predominantly subjected to flexure and shear. Although applications to special structures, such as bridges, retaining walls, tanks and silos are not specifically covered, the fundamental design concepts remain the same and can easily be extended to these elements. It introduces the principles and related theories for predicting the role of steel fibers in reinforcing concrete members concisely and logically, and presents various material models to predict the response of SFRC members in detail. These are then gradually extended to develop an analytical flexural model for the analysis and design of SFRC members. The lack of such a discussion is a major hindrance to the adoption of SFRC as a structural material in routine design practice. This book helps users appraise the role of fiber as reinforcement in concrete members used alone and/or along with conventional rebars. Applications to singly and doubly reinforced beams and slabs are illustrated with examples, using both SFRC and conventional reinforced concrete as a structural material. The influence of the addition of steel fibers on various mechanical properties of the SFRC members is discussed in detail, which is invaluable in helping designers and engineers create optimum designs. Lastly, it describes the generally accepted methods for specifying the steel fibers at the site along with the SFRC mixing methods, storage and transport and explains in detail methods to validate the adopted design. This book is useful to practicing engineers, researchers, and students.