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Development Of Self Consolidating Concrete For Slip Form Paving
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Book Synopsis Self-consolidating Concrete, Applications for Slip Form Paving by :
Download or read book Self-consolidating Concrete, Applications for Slip Form Paving written by and published by . This book was released on 2005 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over-consolidation is often visible as longitudinal vibrator trails in the surface of concrete pavements constructed using slip-form paving. Concrete research and practice have shown that concrete material selection and mix design can be tailored to provide a good compaction without the need for vibration. However, a challenge in developing self-consolidating concrete for slip-form paving (SF SCC) is that the new SF SCC needs to possess not only excellent self-compactibility and stability before extrusion, but also sufficient "green" strength after extrusion, while the concrete is still in a plastic state. The SF SCC to be developed will not be as fluid as the conventional SCC, but it will (1) be workable enough for machine placement, (2) be self-compacting with minimum segregation, (3) hold shape after extrusion from a paver, and (4) have performance properties (strength and durability) compatible to current pavement concrete. The overall objective of this project is to develop a new type of SCC for slip-form paving to produce more workable concrete and smoother pavements, better consolidation of the plastic concrete, and higher rates of production. Phase I demonstrated the feasibility of designing a new type of SF SCC that can not only self-consolidate, but also have sufficient green strength. In this phase, a good balance between flowability and shape stability was achieved by adopting and modifying the mix design of self-consolidating concrete to provide a high content of fine materials in the fresh concrete. It was shown that both the addition of fine particles and the modification of the type of plasticizer significantly improve fresh concrete flowability. The mixes used in this phase were also found to have very good shape stability in the fresh state. Phase II will focus on developing a SF SCC mix design in the lab and a trial of the SF SCC in the field. Phase III will include field study, performance monitoring, and technology transfer.
Book Synopsis PRO 71: Advances in Civil Engineering Materials - Proceedings of the 50-year Teaching and Research Anniversary of Prof. Sun Wei by :
Download or read book PRO 71: Advances in Civil Engineering Materials - Proceedings of the 50-year Teaching and Research Anniversary of Prof. Sun Wei written by and published by RILEM Publications. This book was released on 2010 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Field Study of Air Content Stability in the Slipform Paving Process by :
Download or read book Field Study of Air Content Stability in the Slipform Paving Process written by and published by . This book was released on 2012 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study evaluated the impacts of construction on the air content and air-void system structure of Portland cement concrete pavements. The primary intent was to quantify the air content of fresh concrete before and after it has gone through the slipform paver. The air-void system parameters of hardened concrete were then assessed using cast and extracted core specimens. The results of the air content testing on fresh concrete and the concrete cylinder specimens cast in the field suggested that there is some loss of air as the concrete passes through the paver. Laboratory testing performed on cores extracted from the pavement did not provide any conclusive evidence that entrained air is lost during the slipform paving process. In fact, many of the extracted cores had measured air content values that were much higher than the specification requirement. If excessive, this could result in increased permeability and low-strength related issues. Although a rigorous statistical analysis was not performed, the results suggest that the air content testing on fresh concrete is not capturing the true air content of the concrete placed with a slipform paver. The fresh concrete air content is generally lower than the air content measured in the cores.
Book Synopsis Advances in Cement-Based Materials by : Gideon P.A.G. Van Zijl
Download or read book Advances in Cement-Based Materials written by Gideon P.A.G. Van Zijl and published by CRC Press. This book was released on 2009-11-02 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collection of selected papers on current advances in high performance construction materials. Contributions deal with the development, characterization, application procedures, performance and structural design of materials with key potential in civil engineering works. Materials treated are fibre reinforced concrete, high performance concrete, sel
Download or read book Public Roads written by and published by . This book was released on 2008 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concrete International. Design & Construction by :
Download or read book Concrete International. Design & Construction written by and published by . This book was released on 2004 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Challenges, Opportunities and Solutions in Structural Engineering and Construction by : Nader Ghafoori
Download or read book Challenges, Opportunities and Solutions in Structural Engineering and Construction written by Nader Ghafoori and published by CRC Press. This book was released on 2009-10-29 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Challenges, Opportunities and Solutions in Structural Engineering and Construction addresses the latest developments in innovative and integrative technologies and solutions in structural engineering and construction, including: Concrete, masonry, steel and composite structures; Dynamic impact and earthquake engineering; Bridges and
Author :Iowa State University. Center for Portland Cement Concrete Pavement Technology Publisher : ISBN 13 : Total Pages :24 pages Book Rating :4.:/5 (1 download)
Book Synopsis The First 5 Years, April 2000-March 2005 by : Iowa State University. Center for Portland Cement Concrete Pavement Technology
Download or read book The First 5 Years, April 2000-March 2005 written by Iowa State University. Center for Portland Cement Concrete Pavement Technology and published by . This book was released on 2005 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the accomplishments of the Center for Portland Cement Concrete Pavement Technology (PCC Center) at Iowa State University, which was founded in April 2000. The report discusses the advisory groups that guide the Center, and describes the facilities included in the Center. The two Center facilities are the PCC Pavement and Materials Research Laboratory and the Mobile Concrete Research Lab. The report details the combined test capability of the Center's two labs, and describes the research undertaken at the Center. Also included in the publication are long-term planning efforts and technology transfer studies.
Download or read book Master's Theses Directories written by and published by . This book was released on 2006 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Book Synopsis Commencement by : Iowa State University
Download or read book Commencement written by Iowa State University and published by . This book was released on 2004 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Slip-form Paving as Developed and Pioneered in Iowa by : L. M. Clauson
Download or read book Slip-form Paving as Developed and Pioneered in Iowa written by L. M. Clauson and published by . This book was released on 1961 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water for Peace: Planning and developing water programs by :
Download or read book Water for Peace: Planning and developing water programs written by and published by . This book was released on 1968 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 3D Concrete Printing Technology by : Jay G. Sanjayan
Download or read book 3D Concrete Printing Technology written by Jay G. Sanjayan and published by Butterworth-Heinemann. This book was released on 2019-02-15 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3D Concrete Printing Technology provides valuable insights into the new manufacturing techniques and technologies needed to produce concrete materials. In this book, the editors explain the concrete printing process for mix design and the fresh properties for the high-performance printing of concrete, along with commentary regarding their extrudability, workability and buildability. This is followed by a discussion of three large-scale 3D printings of ultra-high performance concretes, including their processing setup, computational design, printing process and materials characterization. Properties of 3D-printed fiber-reinforced Portland cement paste and its flexural and compressive strength, density and porosity and the 3D-printing of hierarchical materials is also covered. - Explores the factors influencing the mechanical properties of 3D printed products out of magnesium potassium phosphate cement material - Includes methods for developing Concrete Polymer Building Components for 3D Printing - Provides methods for formulating geopolymers for 3D printing for construction applications
Book Synopsis A Practical Guide to Microstructural Analysis of Cementitious Materials by : Karen Scrivener
Download or read book A Practical Guide to Microstructural Analysis of Cementitious Materials written by Karen Scrivener and published by CRC Press. This book was released on 2018-10-09 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Practical Guide from Top-Level Industry Scientists As advanced teaching and training in the development of cementitious materials increase, the need has emerged for an up-to-date practical guide to the field suitable for graduate students and junior and general practitioners. Get the Best Use of Different Techniques and Interpretations of the Results This edited volume provides the cement science community with a state-of-the-art overview of analytical techniques used in cement chemistry to study the hydration and microstructure of cements. Each chapter focuses on a specific technique, not only describing the basic principles behind the technique, but also providing essential, practical details on its application to the study of cement hydration. Each chapter sets out present best practice, and draws attention to the limitations and potential experimental pitfalls of the technique. Databases that supply examples and that support the analysis and interpretation of the experimental results strengthen a very valuable ready reference. Utilizing the day-to-day experience of practical experts in the field, this book: Covers sample preparation issues Discusses commonly used techniques for identifying and quantifying the phases making up cementitious materials (X-ray diffraction and thermogravimetric analysis) Presents good practice oncalorimetry and chemical shrinkage methods for studying cement hydration kinetics Examines two different applications of nuclear magnetic resonance (solid state NMR and proton relaxometry) Takes a look at electron microscopy, the preeminent microstructural characterization technique for cementitious materials Explains how to use and interpret mercury intrusion porosimetry Details techniques for powder characterization of cementitious materials Outlines the practical application of phase diagrams for hydrated cements Avoid common pitfalls by using A Practical Guide to Microstructural Analysis of Cementitious Materials. A one-of-a-kind reference providing the do’s and don’ts of cement chemistry, the book presents the latest research and development of characterisation techniques for cementitious materials, and serves as an invaluable resource for practicing professionals specializing in cement and concrete materials and other areas of cement and concrete technology.
Download or read book ACI Materials Journal written by and published by . This book was released on 2008 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Western Conference on Increasing Highway Engineering Productivity, Biltmore Hotel, Los Angeles, California, March 5-6-7, 1957 by : California. Division of Highways
Download or read book Western Conference on Increasing Highway Engineering Productivity, Biltmore Hotel, Los Angeles, California, March 5-6-7, 1957 written by California. Division of Highways and published by . This book was released on 1957 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Integrated Materials and Construction Practices for Concrete Pavement by :
Download or read book Integrated Materials and Construction Practices for Concrete Pavement written by and published by . This book was released on 2006 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manual of integrated material and construction practices for concrete pavements.
