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Investigation Of Hardened Portland Cement Concrete Air Content Using Plastic And Semi Hardened Values
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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 Design and Control of Concrete Mixtures by : Steven H. Kosmatka
Download or read book Design and Control of Concrete Mixtures written by Steven H. Kosmatka and published by . This book was released on 1988 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Portland Cement Association reference, dealing with fundamentals, cold weather concreting, curing, admixtures, aggregates, mixing, and much more.
Download or read book The Indian Concrete Journal written by and published by . This book was released on 1982 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Internal Vibration of Portland Cement Concrete During Paving by : R. P. Elliott
Download or read book Effect of Internal Vibration of Portland Cement Concrete During Paving written by R. P. Elliott and published by . This book was released on 1974 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Manual on Control of Air Content in Concrete by : David Whiting
Download or read book Manual on Control of Air Content in Concrete written by David Whiting and published by . This book was released on 1998 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Standard Practice for Concrete by : United States. Army. Corps of Engineers
Download or read book Standard Practice for Concrete written by United States. Army. Corps of Engineers and published by . This book was released on 1974 with total page 120 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.
Book Synopsis Soil-cement Construction Handbook by : Portland Cement Association
Download or read book Soil-cement Construction Handbook written by Portland Cement Association and published by . This book was released on 1979 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Use of Limestone in Portland Cement by : Rachel Jean Detwiler
Download or read book The Use of Limestone in Portland Cement written by Rachel Jean Detwiler and published by . This book was released on 1996 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concrete Microstructure by : D. M. Roy
Download or read book Concrete Microstructure written by D. M. Roy and published by Strategic Highway Research Program (Shrp). This book was released on 1993 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Durability of concrete in highway systems is a problem of national concern. In order to better understand the mechanisms which intrinsically control durability in highway concrete, it is necessary to define and understand those factors which impact concrete microstructure which is a consequence of both its formulation and the processes taking place during mixing, placing and curing. This report documents an investigation of those variables which control cement hydration and consequent microstructural development.
Book Synopsis Journal of the Research and Development Laboratories by : Portland Cement Association. Research and Development Laboratories
Download or read book Journal of the Research and Development Laboratories written by Portland Cement Association. Research and Development Laboratories and published by . This book was released on 1963 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cement and Concrete Chemistry by : Wieslaw Kurdowski
Download or read book Cement and Concrete Chemistry written by Wieslaw Kurdowski and published by Springer Science & Business. This book was released on 2014-04-24 with total page 705 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph describes cement clinker formation. It covers multicomponent systems, clinker phase structures and their reactions with water, hydrate composition and structure, as well as their physical properties. The mineral additions to cement are described as are their influence on cement-paste properties. Special cements are also discussed. The microstructure of concrete is then presented, and special emphasis is given to the role of the interfacial transition zone, and the corrosion processes in the light of cement-phase composition, mineral additions and w/c ratio. The admixtures' role in modern concrete technology is described with an emphasis on superplasticizer chemistry and its cement-paste rheological modification mechanism. Cement with atypical properties, such as calcium aluminate, white, low energy and expansive cements are characterized. The last part of the book is devoted to special types of concrete such as self compacting and to reactive powders.
Book Synopsis Science and Technology of Concrete Admixtures by : Pierre-Claude Aïtcin
Download or read book Science and Technology of Concrete Admixtures written by Pierre-Claude Aïtcin and published by Woodhead Publishing. This book was released on 2015-11-12 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Science and Technology of Concrete Admixtures presents admixtures from both a theoretical and practical point-of-view. The authors emphasize key concepts that can be used to better understand the working mechanisms of these products by presenting a concise overview on the fundamental behavior of Portland cement and hydraulic binders as well as their chemical admixtures, also discussing recent effects in concrete in terms of rheology, mechanics, durability, and sustainability, but never forgetting the fundamental role played by the water/binder ratio and proper curing in concrete technology. Part One presents basic knowledge on Portland cement and concrete, while Part Two deals with the chemical and physical background needed to better understand what admixtures are chemically, and through which mechanism they modify the properties of the fresh and hardened concrete. Subsequent sections present discussions on admixtures technology and two particular types of concrete, self-consolidating and ultra-high strength concretes, with final remarks on their future. - Combines the knowledge of two leading authors to present both the scientific and technology of admixtures - Explains what admixtures are from a chemical point-of-view and illustrates by which mechanisms they modify the properties of fresh and hardened concrete - Presents a fundamental, practical, and innovative reference book on the topic - Contains three detailed appendices that can be used to learn how to use admixtures more efficiently
Book Synopsis Design and Control of Concrete Mixtures by : Steven H. Kosmatka
Download or read book Design and Control of Concrete Mixtures written by Steven H. Kosmatka and published by Portland Cement Assn. This book was released on 2011-01 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: This book presents the properties of concrete as needed in concrete construction, including strength and durability. All concrete ingredients (cementing materials, water, aggregates, admixtures, and fibers) are reviewed for their optimal use in designing and proportioning concrete mixtures. Applicable ASTM, AASHTO, and ACI standards are referred to extensively. The use of concrete from design to batching, mixing, transporting, placing, consolidating, finishing, and curing is addressed. Concrete sustainability, along with special concretes, including high-performance concretes, are also reviewed.
Book Synopsis Concrete Manual by : United States. Bureau of Reclamation
Download or read book Concrete Manual written by United States. Bureau of Reclamation and published by . This book was released on 1955 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research Needs Relating to Performance of Aggregates in Highway Construction by : Richard D. Walker
Download or read book Research Needs Relating to Performance of Aggregates in Highway Construction written by Richard D. Walker and published by Highway Research Board. This book was released on 1970 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the use of conventional design procedures, aggregates comprise more than 90 percent of the material required for the construction and maintenance of highway pavements. In order to summarize the most important research problems, the top two projects in each of the study areas are as follows: (1) under Portland cement concrete, the role of aggregates particle characteristics and gradations on properties of fresh concrete and performance of hardened concrete are studies, (2) in relation to bituminous concrete and related materials, the stripping of asphalt cement in bituminous mixtures and identification of the significant aggregate surface properties that influence coating and adhesion are studied as well as the soundness of aggregate particles in bituminous mixtures, (3) under base course and shoulder materials, the relationship of aggregate and base course performance under varying traffic loads is studied as well as the determination of the causes of change in gradation for aggregates used in highway base course construction, and (4) aggregate properties are related to skid resistance of pavements and determination is made of the surface characteristics of aggregates used in highway construction.
Author :National Research Council (U.S.). Highway Research Board. Committee on Chemical Additions and Admixtures for Concrete Publisher : ISBN 13 : Total Pages :60 pages Book Rating :4.:/5 (359 download)
Book Synopsis Admixtures in Concrete by : National Research Council (U.S.). Highway Research Board. Committee on Chemical Additions and Admixtures for Concrete
Download or read book Admixtures in Concrete written by National Research Council (U.S.). Highway Research Board. Committee on Chemical Additions and Admixtures for Concrete and published by . This book was released on 1971 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: An admixture is any material other than water, aggregates, and hydraulic cement that is used as an ingredient of a concrete or mortar mixture and added to the batch immediately before or during mixing. 4 types of admixtures are discussed: (1) accelerators, the most common of which is calcium chloride; (2) air-entraining, to protect the concrete against the damage it may suffer if the paste becomes saturated with water and then freezes; (3) retarders and water reducers, which extend setting time 30 to 50 percent to compensate for placement temperatures, to avoid cold joints, or to avoid undesirable effects of displacements and deflections; and (4) pozzolans, which react with hydroxides to form compounds with cementitious properties, and usually produce a lower cost concrete.
