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Prestress Losses In Prestressed Bridge Girders Cast With Self Consolidating Concrete Mbtc 2071
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Book Synopsis Prestress Losses in Prestressed Bridge Girders Cast with Self-consolidating Concrete, MBTC-2071 by :
Download or read book Prestress Losses in Prestressed Bridge Girders Cast with Self-consolidating Concrete, MBTC-2071 written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract. ... This research program examined the prestress losses of beams cast with SCC and compares those to losses of control beams cast with conventional concrete of the same compressive strength. Additionally, the research program examined the transfer and development length of SCC beams.
Book Synopsis Prestress Losses in Prestressed Bridge Girders Cast with Self-consolidating Concrete by :
Download or read book Prestress Losses in Prestressed Bridge Girders Cast with Self-consolidating Concrete written by and published by . This book was released on 2008 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prestress Losses in Pretensioned High-strength Concrete Bridge Girders by : Maher K. Tadros
Download or read book Prestress Losses in Pretensioned High-strength Concrete Bridge Girders written by Maher K. Tadros and published by Transportation Research Board. This book was released on 2003 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The HCM includes three printed volumes (Volumes 1-3) that can be purchased from the Transportation Research Board in print and electronic formats. Volume 4 is a free online resource that supports the rest of the manual. It includes: Supplemental chapters 25-38, providing additional details of the methodologies described in the Volume 1-3 chapters, example problems, and other resources; A technical reference library providing access to a significant portion of the research supporting HCM methods; Two applications guides demonstrating how the HCM can be applied to planning-level analysis and a variety of traffic operations applications; Interpretations, updates, and errata for the HCM (as they are developed);A discussion forum allowing HCM users to ask questions and collaborate on HCM-related matters; and Notifications of chapter updates, active discussions, and more via an optional e-mail notification feature."--Publisher.
Book Synopsis Annual Report by : Mack-Blackwell National Rural Transportation Study Center (U.S.)
Download or read book Annual Report written by Mack-Blackwell National Rural Transportation Study Center (U.S.) and published by . This book was released on 2005 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Behavior of Prestressed Concrete Bridge Girders by : Franklin B. Angomas
Download or read book Behavior of Prestressed Concrete Bridge Girders written by Franklin B. Angomas and published by . This book was released on 2009 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: For this research, prestress losses were monitored in six HPC bridge girders. These measured losses were compared to predicted losses according to four sources. Prestress loss predictive methods considered for this research were: 1- AASHTO LRFD 2004, 2- AASHTO LRFD 2004 Refined, 3- AASHTO LRFD 2007, and 4- AASHTO LRFD Lump Sum method. On the other hand, the camber prediction methods used in the present research were: 1- Time dependent method described in NCHRP Report 496, 2- PCI multiplier method, and 3- Improved PCI Multiplier method. For the purpose of this research, long-term prestress losses were monitored in select girders from Bridge 669 located near Farmington, Utah. Bridge 669 is a three-span prestress concrete girder bridge. The three spans have lengths of 132.2, 108.5, and 82.2 feet long, respectively. Eleven AASHTO Type VI precast prestressed girders were used to support the deck in each span. The deflection of several girders from a three-span, prestressed, precast concrete girder bridge was monitored for 3 years. Fifteen bridge girders were fabricated for the three span-bridge. Ten girders from the exterior spans had span length of 80 feet, and five girders from the middle span had span length of 137 feet. From the results of this research, in both the 82- and 132-foot-long, the AASHTO LRFD 2004 Refined Method does a better job predicting the prestress loss and it can be concluded that all the prediction methods do a better job predicting the loss for the larger girders. The Lump Sum method predicted very accurately the long term prestress loss for the 132-foot-long girders.
Book Synopsis Model of Strain-related Prestress Losses in Pretensioned Simply Supported Bridge Girders by : José Manuel Gallardo Méndez
Download or read book Model of Strain-related Prestress Losses in Pretensioned Simply Supported Bridge Girders written by José Manuel Gallardo Méndez and published by . This book was released on 2014 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prestressed concrete construction relies on the application of compressive stresses to concrete elements. The prestressing force is typically applied through the tensioning of strands that react against the concrete and induce compression in the concrete. Loss of prestress is the decrease of this pre-applied stress. The conservative estimation of the prestress losses is imperative to prevent undesired cracking of the prestressed element under service loads. A large fraction of the prestress losses is a consequence of concrete deformations. This fraction of the losses can be identified as strain-related losses, and these occur due to instantaneous elastic shortening, and time-dependent creep and shrinkage. Creep and shrinkage of concrete depend on many factors that are extremely variable within concrete structures. The time-dependent behavior of concrete is not well-understood, but recent findings in the topics of concrete creep and shrinkage provide a better understanding of the underlying mechanisms affecting the nature of these two phenomena. However, current design practices and prestress loss estimation methods do not reflect the state-of-the-art knowledge regarding creep and shrinkage. The main objective of this dissertation was the study and estimation of strain-related prestress losses in simply supported pretensioned bridge girders. Simply supported pretensioned girders are widely designed, produced and frequently used in bridge construction. Due to this common use, pretensioned concrete bridge girders has become fairly standardized elements, which results in a reduced variability in the behavior of pretensioned bridge girders, as compare to that of less standardized concrete structures. Hence, a simplified method was calibrated to estimate prestress losses within pretensioned girders to an adequate level of accuracy. To achieve an acceptable accuracy experimental data from the monitoring of pretensioned simply supported girders was used for the calibration of the method. The accuracy of this simplified method is comparable to that achievable using more elaborate methods developed for generic concrete structures.
Book Synopsis Characterization of Self-consolidating Concrete for Design of Precast, Prestressed Bridge Girders by : David Trejo
Download or read book Characterization of Self-consolidating Concrete for Design of Precast, Prestressed Bridge Girders written by David Trejo and published by . This book was released on 2008 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Implementation of Self-consolidating Concrete (SCC) for Prestressed Concrete Girders by : Luis Alexander Mata
Download or read book Implementation of Self-consolidating Concrete (SCC) for Prestressed Concrete Girders written by Luis Alexander Mata and published by . This book was released on 2004 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: bridge beam, girder, creep, flexural modulus, modulus of elasticity, prestressing, self-consolidating concrete, shrinkage, strength.
Download or read book Rice written by C. Wayne Smith and published by John Wiley & Sons. This book was released on 2002-09-09 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thorough coverage of rice, from cultivar development tomarketing Rice: Evolution, History, Production, and Technology, the thirdbook in the Wiley Series in Crop Science, provides unique,single-source coverage of rice, from cultivar developmenttechniques and soil characteristics to harvesting, storage, andgermplasm resources. Rice covers the plant's origins and history,physiology and genetics, production and production hazards,harvesting, processing, and products. Comprehensive coverage includes: * Color plates of diseases, insects, and other productionhazards * The latest information on pest control * Up-to-date material on marketing * A worldwide perspective of the rice industry Rice provides detailed information in an easy-to-use format, makingit valuable to scientists and researchers as well as growers,processors, and grain merchants and shippers.
Book Synopsis Encyclopedia of Water Science (Print) by : Bobby A. Stewart
Download or read book Encyclopedia of Water Science (Print) written by Bobby A. Stewart and published by CRC Press. This book was released on 2003-07-31 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt: PRINT/ONLINE PRICING OPTIONS AVAILABLE UPON REQUEST AT [email protected]
Download or read book The Southern Corn Rootworm written by and published by . This book was released on 1961 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
