Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Structural Performance Of Self Consolidating Concrete In Aashto Type I Prestressed Girders full books in PDF, epub, and Kindle. Read online Structural Performance Of Self Consolidating Concrete In Aashto Type I Prestressed Girders ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author :
Publisher :
ISBN 13 :
Total Pages : 281 pages
Book Rating : 4.:/5 (259 download)
Download or read book Structural Performance of Self-consolidating Concrete in AASHTO Type I Prestressed Girders written by and published by . This book was released on 2008 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kamal Khayat
Publisher : Transportation Research Board
ISBN 13 : 0309117666
Total Pages : 99 pages
Book Rating : 4.3/5 (91 download)
Download or read book Self-consolidating Concrete for Precast, Prestressed Concrete Bridge Elements written by Kamal Khayat and published by Transportation Research Board. This book was released on 2009 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: At head of title: National Cooperative Highway Research Program.
Author :
Publisher :
ISBN 13 :
Total Pages : 221 pages
Book Rating : 4.:/5 (463 download)
Download or read book Structural Performance of Prestressed Self-consolidating Concrete Bridge Girders Made with Limestone Aggregates written by and published by . This book was released on 2009 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies have shown that the use of self-consolidating concrete (SCC) results in improved finished quality, increased production efficiency, and reduced labor cost. Because of the favorable properties that SCC exhibits, the Federal Highway Administration and the precast concrete industry have been promoting the research and development of SCC for structural applications in bridges. In 2007, researchers at South Dakota State University (SDSU) concluded an experimental study on three full-scale prestressed bridge girders. One of the three girders was cast using conventional concrete and served as a control specimen, while the other two girders were cast using SCC. The SCC mix was made with quartzite coarse aggregate that is commonly used in eastern South Dakota. The results of the study show that the structural performance of the prestressed SCC girders is similar to that of the control prestressed girder. It was also observed that the SCC girders have a better finished surface than the conventional concrete girder. The study in this report involves material testing of SCC mixtures and structural testing of full-scale prestressed bridge girders.
Download or read book Implementation of Self-Consolidating Concrete (SCC) for Prestressed Concrete Girders written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-Consolidating Concrete (SCC) was first developed in Japan almost 15 years ago, and it was not until the late 1990's that the U.S precast concrete industry applied the technology to architectural and structural building elements. This study describes the first experience of using SCC for prestressed concrete bridge girders in North Carolina. A multiple-span bridge is currently under construction in eastern North Carolina using one hundred thirty AASHTO Type III girders, each 54.8 ft (16.7 m) long (NCDOT Project 8.1170903). Three girders from one production line of five girders were selected for evaluation. Two of the girders were cast with SCC and one with conventional concrete as the control. The plastic and hardened properties of both the SCC and the conventional concrete were monitored and measured. The fresh properties of SCC included unit weight, air content, slump flow, Visual Stability Index (VSI), and passing ability as measured by J-ring and L-box. Hardened concrete tests on SCC and conventional concrete included compressive strength, static elastic modulus, elastic modulus based on resonance frequency ('dynamic' modulus) at different ages, along with creep and shrinkage. The prestressing force in the girders was monitored by load cells. Finally, the three girders were tested in flexure up to the design service load to determine and compare their load-deformation characteristics. In general, two AASTHO Type III girders were successfully cast without any vibration using SCC, and exhibited virtually identical load-deflection relationships up to the design service load than that of the conventional concrete girder. SCC showed lower elastic modulus after strength adjustment, and higher creep and shrinkage than conventional concrete.
Author : Alexander Samuel Colmorgan
Publisher :
ISBN 13 :
Total Pages : 506 pages
Book Rating : 4.:/5 (297 download)
Download or read book Performance of American Association of State Highway and Transportation Officials Type III Girders Made with Self-consolidating Concrete written by Alexander Samuel Colmorgan and published by . This book was released on 2008 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Paul Zia
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.3/5 (555 download)
Download or read book Implementation of Self-consolidating Concrete for Prestressed Concrete Girders written by Paul Zia and published by . This book was released on 2005 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bulent Erkmen
Publisher :
ISBN 13 :
Total Pages : 347 pages
Book Rating : 4.:/5 (299 download)
Download or read book Self-compacting Concrete (SCC) for Prestressed Bridge Girders written by Bulent Erkmen and published by . This book was released on 2008 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Researchers conducted an experimental program to investigate the viability of producing self-consolidating concrete (SCC) using locally available aggregate, and the viability of its use in the production of precast prestressed concrete bridge girders for the State of Minnesota. Six precast prestressed bridge girders were cast using four SCC and two conventional concrete mixes. Variations in the mixes included cementitious materials (ASTM Type I and III cement and Class C fly ash), natural gravel and crushed stone as coarse aggregate, and several admixtures. The girders were instrumented to monitor transfer length, camber, and prestress losses. In addition, companion cylinders were cast to measure the compressive strength and modulus of elasticity, and to monitor the creep and shrinkage over time. The viability of using several test methods to evaluate SCC fresh properties was also investigated. The test results indicated that the overall performance of the SCC girders was comparable to that of the conventional concrete girders. The measured, predicted, and calculated prestress losses were generally in good agreement. The study indicated that creep and shrinkage material models developed based on companion cylinder creep and shrinkage data can be used to reasonably predict measured prestress losses of both conventional and SCC prestressed bridge girders.
Author : Kurtis McKinley Boehm
Publisher :
ISBN 13 :
Total Pages : 197 pages
Book Rating : 4.:/5 (72 download)
Download or read book Performance of Self-consolidating Concrete in Prestressed Girders written by Kurtis McKinley Boehm and published by . This book was released on 2010 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alexander Michael Griffin
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (92 download)
Download or read book Shear Behavior of High Strength Self-consolidating Concrete in Nebraska University Bridge Girders written by Alexander Michael Griffin and published by . This book was released on 2014 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: "As the nation's infrastructure continues to age, advanced concrete technologies have been developed to both reduce a structure's costs and increase its life expectancy. Since the early 1990's, self-consolidating concrete (SCC) has been one of these technologies. Many, however, have been reluctant to implement SCC in highway girders due to the mixture constituents. One of these concerns is the reduced content and size of the coarse aggregate. These differences in the concrete potentially hinder SCC's mechanical properties and shear resistance. Additionally, for high strength concretes (HSC) with weaker aggregates, shear cracks tend to propagate through the coarse aggregate, reducing the aggregate interlock component of the shear resistance. This study aimed at assessing the web-shear strength both with and without web reinforcement of two precast-prestressed Nebraska University (NU) 53 girders fabricated with high strength self-consolidating concrete (HS-SCC). The results were compared to the ACI 318 (2011) and AASHTO LRFD (2012) code estimates, and a finite element model (FEM) package, Response 2000. ATENA Engineering, a finite element analysis (FEA) program, was also used to evaluate the qualitative results, specifically crack patterns and the effect of the coarse aggregate content and size. A prestressed concrete database was also constructed to assess the effect of the reduced coarse aggregate content on the shear capacity of HS-SCC in prestressed concrete members. The mechanical properties of the HS-SCC mix were also tested and compared to relevant empirical equations. The HS-SCC mix investigated in this study proves to be a viable cost-saving alternative for bridge superstructure elements"--Abstract, page iii.
Author :
Publisher :
ISBN 13 :
Total Pages : 238 pages
Book Rating : 4.:/5 (1 download)
Download or read book Self-consolidating Concrete (SCC) Structural Investigation written by and published by . This book was released on 2005 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew M. Pozolo
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (776 download)
Download or read book Transfer and Development Lengths of Steel Strands in Full-Scale Prestressed Self-Consolidating Concrete Bridge Girders written by Andrew M. Pozolo and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-consolidating concrete (SCC) is a workable yet stable concrete which flows easily and consolidates under its own weight. Its unique properties can substantially reduce the labor required to pour complex or heavily reinforced structural members. Over the past decade, the American precast industry has taken significant strides to adopt SCC in commercial projects, though concern about early-age bond behavior has limited the material0́9s application in prestressed members. A keen understanding of SCC0́9s bond strength, including its impact on transfer and development lengths in prestressed members, is essential to safely implement SCC in prestressed design. The Illinois Department of Transportation (IDOT) has sponsored a three-phase study exploring the bond behavior of steel strands in prestressed bridge girders. In the first phase, 56 pullout tests were conducted to compare the performance of seven-wire strands embedded in SCC and conventionally-consolidated concrete blocks. In the second phase, transfer lengths of prestressing strands in two SCC hollow box girders and two SCC I-girders were determined experimentally. In the third phase, the development length of strands in the two box girders was determined through a series of iterative flexural tests. This thesis details the three phases of the IDOT study and compares results to industry standards and requirements of the American Concrete Institute and the American Association of State Highway and Transportation Officials. Results are also compared to analytical methods proposed in the literature. Additionally, a systematic method is developed to predict transfer lengths in full-scale specimens using pullout test data and finite element analysis. The proposed method may be useful when large-scale testing is impractical in terms of time or cost.
Author : Bassem O. Andrawes
Publisher :
ISBN 13 :
Total Pages : 56 pages
Book Rating : 4.:/5 (433 download)
Download or read book Transfer and Development Length of Prestressing Tendons in Full-scale AASHTO Prestressed Concrete Girders Using Self-consolidating Concrete written by Bassem O. Andrawes and published by . This book was released on 2009 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jacob G. Choate
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (18 download)
Download or read book Implementing Fiber-reinforced, Self-consolidating Concrete as a Repair Material for AASHTO Prestressed Concrete Girders written by Jacob G. Choate and published by . This book was released on 2018 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : רבקה משולח
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (43 download)
Download or read book בית ברנדה אלבה written by רבקה משולח and published by . This book was released on 2001 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maher K. Tadros
Publisher : Transportation Research Board
ISBN 13 : 0309118352
Total Pages : 76 pages
Book Rating : 4.3/5 (91 download)
Download or read book Evaluation and Repair Procedures for Precast/prestressed Concrete Girders with Longitudinal Cracking in the Web written by Maher K. Tadros and published by Transportation Research Board. This book was released on 2010 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report establishes a user's manual for the acceptance, repair, or rejection of precast/prestressed concrete girders with longitudinal web cracking. The report also proposes revisions to the AASHTO LRFD Bridge Design Specifications and provides recommendations to develop improved crack control reinforcement details for use in new girders. The material in this report will be of immediate interest to bridge engineers.
Author : Chad Joseph Stripling
Publisher :
ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.:/5 (274 download)
Download or read book Structural Evaluation of Prestressed Self-consolidating Concrete Bridge Girders Using Limestone Aggregates written by Chad Joseph Stripling and published by . This book was released on 2008 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maher K. Tadros
Publisher : Transportation Research Board
ISBN 13 : 030908766X
Total Pages : 73 pages
Book Rating : 4.3/5 (9 download)
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.
