The Use Of Steel Fiber Reinforced Concrete In Containment And Explosive Resistant Structures
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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).
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 Interaction Of Non Nuclear Munitions With Structures
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Author :
language : en
Publisher:
Release Date : 1983
The Interaction Of Non Nuclear Munitions With Structures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Blast effect categories.
The Shock And Vibration Digest
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Author :
language : en
Publisher:
Release Date : 1984
The Shock And Vibration Digest written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Shock (Mechanics) categories.
A Preliminary Investigation Of Fiber Reinforced Concrete Under Quasi Static And Dynamic Loads
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Author :
language : en
Publisher:
Release Date : 2004
A Preliminary Investigation Of Fiber Reinforced Concrete Under Quasi Static And Dynamic Loads written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.
The world has been reminded in recent years that there is no boundary that terrorists wonÃØâ'Ơâ"Øt cross and there are no limits to what they will do to achieve their political objectives. With the United States at the center of their focus, the list of potential targets has expanded to include any critical and/or vulnerable structure that symbolically plays a part in the American way of life, such as government, communications and financial networks, and nuclear power. With the increased threat to structural infrastructure, research studies have been conducted on various ways to augment defensive capabilities and protect against blast and impact affects in addition to general wear and tear. Nuclear containment structures are of particularly high threat due to the level of potential collateral damage their failure could inflict. Current nuclear facilities construction involves over three feet of concrete and conventional steel reinforcement. This containment structure serves multiple functions including a physical barrier against blast and impact loading. Having the additional benefit of reducing construction time and cost by lowering the required amount of conventional steel, it has been suggested that external fiber reinforced concrete panels be used for the function of blast and impact protection. The addition of unconventional reinforcement to concrete, specifically fiber reinforcement, has been shown to have the desired characteristics for blast and impact resistance including increased durability, toughness and high energy absorption. This is a preliminary study of the fundamental behavior of fiber reinforced concrete. The ultimate goal for this research project is to develop an analytical model to simulate fiber reinforced concrete structures under dynamic loading as well as assist in designing fiber reinforced concrete structures. The aim of this study was to obtain a usable fiber reinforced concrete and conduct quasi-static and dynamic experiments. This stu.
Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1986
Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Power resources categories.
Aci Manual Of Concrete Practice
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Author : American Concrete Institute
language : en
Publisher:
Release Date : 2007
Aci Manual Of Concrete Practice 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 2007 with Concrete categories.
Experimental And Numerical Study Of Steel Fiber Reinforced Concrete Structures Subjected To Internal Explosion
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Author : Nikhil Vasant Moon
language : en
Publisher:
Release Date : 2020
Experimental And Numerical Study Of Steel Fiber Reinforced Concrete Structures Subjected To Internal Explosion written by Nikhil Vasant Moon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
This research investigates the effect of an accidental explosion of a steam boiler in a boiler room on steel fiber reinforced concrete (SFRC) structure in an industrial facility, using nonlinear analysis in ABAQUS FEA software. The mechanical properties of SFRC are calculated through testing at the UTA Civil Engineering Laboratory Building. Steel fiber dosages in concrete at different volume fractions are examined for the mechanical properties of concrete. In total, 9 (4" x 8") cylindrical specimens for compressive strength and modulus of elasticity test, 9 (4" x 8") cylindrical specimens for tensile strength test, and 9 (6" x 6" x 21") beam specimens for modulus of rupture test were produced and tested after 28 days of curing. Modulus of Elasticity is found for the different volume fractions of SRFC by stress vs strain curve from experimental tests. Adding 1% of steel fiber in concrete can increase the modulus of elasticity by 11%, compressive strength by 22%, tensile strength by 42%, and modulus of rupture by 32 %. Using the concrete properties obtained from experimental results, numerical analysis is done to find the effect of the Steam Boiler explosion on SFRC boiler room using nonlinear analysis in ABAQUS FEA software. Dynamic/Explicit loading condition is considered for analysis. It's found that adding 1% steel fiber by volume fraction can increase the overall capacity of concrete structure by 26%, decrease strain by 21%, and decrease the deflection by 23%. Parametric studies are also carried out at 1% SFRC by different arrangements of Steam Boiler closed room - with a rigid roof, with a frangible roof and circular vent in the roof. It's found that the reflected pressure due to explosion can be significantly reduced on the surrounding walls. In case, roof with circular vent the stresses decrease by 50%, strain decrease by 70% and with frangible roof stress decrease by 31%, strain by 38% and strain decrease by 38%.
The Indian Concrete Journal
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Author :
language : en
Publisher:
Release Date : 1994
The Indian Concrete Journal written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Concrete construction categories.
Building Industry Technology
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Author :
language : en
Publisher:
Release Date : 1989
Building Industry Technology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Building categories.