Optimal Steel Fiber Strength for Reinforcement of Cementitious Materials
Authors: Christopher K. Y. Leung and Nathan Shapiro,
ASCE Journal of Materials in Civil Engineering, Volume 11, pp. 116-123 (May 1999)
ISSN: 19435533 (online); 08991561 (print)
ABSTRACT
Steel fiber is the most common type of fiber reinforcement in cementitious materials. The reinforcement efficiency, in terms of maximum crack bridging force and total energy absorption during fiber pullout, is a function of many parameters including the properties of fiber, matrix, and interface as well as fiber size, volume fraction, geometry, and distribution. In this investigation, we focus on the effect of fiber yield strength on reinforcement efficiency. Fiber pullout specimens are fabricated with fibers of different yield strengths. Because cracks in a concrete member may intersect fibers at different angles, pullout tests are carried out with the fiber inclined at 0, 30, and 60°. The experimental results indicate the existence of an optimal fiber yield strength for the maximization of pullout load and pullout work. Inspection of the pullout curves as well as microscopic studies show that a higher fiber yield strength will result in more severe matrix spalling around the fiber exit point, thus limiting the further improvement in reinforcement efficiency. The results confirm the qualitative trend predicted by an existing theoretical model and indicate that the fiber yield strength is an important parameter that should not be overlooked in the design of fiber reinforced cementitious composites.
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Title : Civil and Environmental Systems Engineering
Authors : Charles S. Revelle, E. EArl Whitlatch Jr., Jeff R. Wright
Edition : 2nd
Publisher: Prentice Hall; 2 edition (Aug 25 2003)
ISBN-10: 0130478229
ISBN-13: 978-0130478221
Amazon Link to the textbook
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Bentley SewerCAD v8i (SELECT series 2) 08.11.02.49
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SewerCAD V8i is an extremely powerful program for the design and analysis of gravity flow and pressure flow through pipe networks and pumping stations. The program can be run in Microstation, AutoCAD, and ArcGIS modes, giving you all the power of Microstation and AutoCAD's capabilities, or in Stand-Alone mode utilizing our own graphical interface.
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IMPORTANT NOTICE: You may use this software for evaluation purposes only.
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Surface Water-Quality Modeling Steven C. Chapra
Does anybody have this book, I've searched all over the net but couldn't find it. Any help would be appreciated
This book develop a highly efficient construction supply chain management (CSCM) solution that decreases risk and increases profitability. This authoritative volume provides proven strategies for the lean construction approach, including just-in-time purchasing, supplier evaluation, subcontractor selection, subcontractor relationship management, equipment acquisition, information sharing, and project quality management.
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Construction Purchasing and Supply Chain Management explains how to achieve maximum integration with upstream and downstream supply chain members using the latest technologies. You will be able to establish a strategic CSCM framework to meet the budgetary and scheduling goals of any project. This comprehensive, step-by-step guide to CSCM is useful for project owners, design engineers, architects, prime contractors, subcontractors, suppliers, and construction managers involved in construction projects throughout the world. Discover how to:
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1.1 This document specifies the different types of inspection documents supplied to the purchaser, in
accordance with the requirements of the order, for the delivery of all metallic products e.g. plates, sheets, bars,
forgings, castings, whatever their method of production.
1.2 This document may also apply to non-metallic products.
1.3 This document is used in conjunction with the product specifications which specify the technical delivery
conditions of the products.
NOTE 1 The list of information that may be included in the inspection documents can be found in appropriate documents, e.g.
EN 10168 for steel.
NOTE 2 Annex A gives a summary of the different inspection documents.
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This European Standard lists the information that may be communicated and includes a brief description in the inspection documents of iron and steel products as described in EN 10021 and EN 10204. By laying down standardized designations and definitions for information likely to appear in inspection documents and by introducing code numbers for each of the designated sections, this European Standard intends to contribute to the elimination of communication difficulties in European trade.
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This European Standard specifies the general technical delivery conditions for all steel products covered by
EN 10079 with the exception of steel castings and powder metallurgical products.
Where the delivery requirements agreed for the order or specified in the appropriate product standard differ from the general technical delivery conditions defined in this European Standard, then the requirements agreed for the order or specified in the appropriate product standard apply.
NOTE Inspection documents are covered by EN 10168 and EN 10204.
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I just want to share this cool link generator for rapidshare, fileserve and hotfile.
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you can get CSA-A23.3-04 "Design of concrete Structures" here
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