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Author : Sem Yee Hew
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (12 download)
Download or read book Influence of Accelerated Curing on Concrete Properties written by Sem Yee Hew and published by . This book was released on 2007 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ingimar Johannsson
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (14 download)
Download or read book Effects of Accelerated Curing on the Time-dependent Properties of Concrete written by Ingimar Johannsson and published by . This book was released on 2018 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term creep and shrinkage behaviors of concrete can greatly affect the serviceability and constructability of prestressed concrete structures. To account for these effects, it is necessary to reliably predict the deformations of the concrete through time. These calculations are particularly challenging for precast, prestressed girders, for which fabricators often use accelerated curing regimes (hot-curing) to make the concrete gain strength faster and thus increase girder production rates. With the exception of a recent study at the University of Washington (Magnuson 2016), little data previously exists on the creep and shrinkage behavior of concrete for such a curing regime. Current prediction models of creep and shrinkage have been calibrated using ambient-cured concrete tests and assume a constant stress history. They deal with variable stress histories by applying the principle of superposition. The validity of the application of the principle of superposition to creep strains has been questioned by many, and it is not computationally convenient. The objectives of this research were (1) to collect additional data on the creep and shrinkage of hot-cured concrete, (2) to study the effect of hot-curing concrete further and (3) to validate the functionality of a model proposed by Magnuson. The additional data verified that creep is affected by the hot-curing but it suggested that shrinkage strain are not affected. Several configurations of the model were calibrated, and a reasonable fit was achieved to creep data from concrete with a diverse set of loading histories. A previously suggested and simpler version of the model showed comparable results (but slightly worse), which questions the necessity of the more complex version of the model.
Author : DF. Orchard
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (125 download)
Download or read book The Effect of Cement Properties and the Thermal Compatibility of Aggregates on the Strength of Accelerated Cured Concrete written by DF. Orchard and published by . This book was released on 1974 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most research work on the effect of the thermal expansion of the constituents of concrete has concentrated chiefly on hardened concrete. Its resistance to heating and cooling and to freezing and thawing has been used for purposes of assessment. The works of different investigators have led to considerable contradiction and no definite conclusion can be drawn on the effect of differences between the coefficients of thermal expansion of the constituents of concrete. Findings show effects on the durability under repeated cycles of freezing and thawing and the compressive strength of concrete subjected to temperature change. There is some evidence that the relative expansions of the constituents of fresh concrete cause a reduction of its ultimate strength under conditions of accelerated curing.
Author : Katharine Mather
Publisher :
ISBN 13 :
Total Pages : 63 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effects of Accelerated Curing on Hydration Products of Cement and Cement-Fly Ash Pastes written by Katharine Mather and published by . This book was released on 1978 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accelerated curing procedures are being used more and more frequently to obtain an estimate of concrete strength by testing accelerated specimens at ages ranging from 24 hr plus or minus 15 min, 28-1/2 hr plus or minus 15 min, or 48 to 96 hr, depending on whether the warm water, the boiling water, or the autogenous curing procedure standardized in ASTM C 684 is followed. Modifications of these procedures also exist. Good correlations between strength of early accelerated specimens and that of 28-day specimens offer the advantage of evaluating the strength level of the concrete within 1 to 4 days from the time of placement which provides economies in construction by giving early warning of unsatisfactory strength. We believe that in the future design strengths will be specified as accelerated strengths.
Author : J. Francis Young
Publisher :
ISBN 13 :
Total Pages : 218 pages
Book Rating : 4.3/5 (91 download)
Download or read book Properties of Concrete at Early Ages written by J. Francis Young and published by . This book was released on 1986 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sidney Mindess
Publisher : Woodhead Publishing
ISBN 13 : 0128189282
Total Pages : 442 pages
Book Rating : 4.1/5 (281 download)
Download or read book Developments in the Formulation and Reinforcement of Concrete written by Sidney Mindess and published by Woodhead Publishing. This book was released on 2019-06-26 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments in the Formulation and Reinforcement of Concrete, Second Edition, presents the latest developments on topics covered in the first edition. In addition, it includes new chapters on supplementary cementitious materials, mass concrete, the sustainably of concrete, service life prediction, limestone cements, the corrosion of steel in concrete, alkali-aggregate reactions, and concrete as a multiscale material. The book's chapters introduce the reader to some of the most important issues facing today's concrete industry. With its distinguished editor and international team of contributors, users will find this to be a must-have reference for civil and structural engineers. Summarizes a wealth of recent research on structural concrete, including material microstructure, concrete types, and variation and construction techniques Emphasizes concrete mixture design and applications in civil and structural engineering Reviews modern concrete materials and novel construction systems, such as the precast industry and structures requiring high-performance concrete
Author : K. Mather
Publisher :
ISBN 13 :
Total Pages : 2 pages
Book Rating : 4.:/5 (125 download)
Download or read book Discussion of "The Effect of Cement Properties and the Thermal Compatibility of Aggregates on the Strength of Accelerated Cured Concrete" by D. F. Orchard, R. Jones, and R. S. Al-Rawi written by K. Mather and published by . This book was released on 1975 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Aykut Cetin
Publisher :
ISBN 13 :
Total Pages : 404 pages
Book Rating : 4.:/5 (375 download)
Download or read book Effect of accelerated heat curing and mix characteristics on the heat development and mechanical properties of high performance concrete written by Aykut Cetin and published by . This book was released on 1995 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Katharine Mather
Publisher :
ISBN 13 :
Total Pages : 26 pages
Book Rating : 4.:/5 (434 download)
Download or read book Effects of Accelerated Curing on Hydration Products of Cement and Cement-fly Ash Pastes written by Katharine Mather and published by . This book was released on 1978 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Steven H. Kosmatka
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.X/5 (6 download)
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.
Author : Mojtaba Mahmoodian
Publisher : Gulf Professional Publishing
ISBN 13 : 0128135794
Total Pages : 188 pages
Book Rating : 4.1/5 (281 download)
Download or read book Reliability and Maintainability of In-Service Pipelines written by Mojtaba Mahmoodian and published by Gulf Professional Publishing. This book was released on 2018-06-13 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reliability and Maintainability of In-Service Pipelines helps engineers understand the best structural analysis methods and more accurately predict the life of their pipeline assets. Expanded to cover real case studies from oil and gas, sewer and water pipes, this reference also explains inline inspection and how the practice influences reliability analysis, along with various reliability models beyond the well-known Monte Carlo method. Encompassing both numerical and analytical methods in structural reliability analysis, this book gives engineers a stronger point of reference covering both pipeline maintenance and monitoring techniques in a single resource. Provides tactics on cost-effective pipeline integrity management decisions and strategy for a variety of different pipes Presents readers with rational tools for strengthening and rehabing existing pipelines Teaches how to optimize materials selection and design parameters for designing future pipelines with a longer service life
Author : V.S. Ramachandran
Publisher : William Andrew
ISBN 13 : 0815516541
Total Pages : 1183 pages
Book Rating : 4.8/5 (155 download)
Download or read book Concrete Admixtures Handbook, 2nd Ed. written by V.S. Ramachandran and published by William Andrew. This book was released on 1996-12-31 with total page 1183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of the first edition ten years ago, significant developments have occurred in the use of admixtures in concrete. Eight new chapters and a full update of the preceding ten chapters bring this book up to date; reflecting the relative advances made in the science and technology of different groups of admixtures. The increased role and development of admixtures in concrete technology is evidenced by a number of conferences, publications, and novel admixtures available in the market place. These developments in the field caused the modification of many chapters in the first edition in order to reflect the advances. Although individual chapters refer to standards and specifications of admixtures, those only interested in the standards or techniques used in investigating admixtures will find the second chapter (Research Technologies, Standards, and Specifications) useful. Admixtures are not as inert as may be presumed. They may chemically interact with the constituents of concrete and affect the properties of the fresh and hardened concrete and its durability. The third chapter deals with these aspects. It was important to devote a chapter to recent attempts in developing new admixtures.
Author : Elmo C. Higginson
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.:/5 (359 download)
Download or read book Effect of Steam Curing on the Important Properties of Concrete written by Elmo C. Higginson and published by . This book was released on 1960 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Hewlett
Publisher : Elsevier
ISBN 13 : 0080535410
Total Pages : 1087 pages
Book Rating : 4.0/5 (85 download)
Download or read book Lea's Chemistry of Cement and Concrete written by Peter Hewlett and published by Elsevier. This book was released on 2003-11-12 with total page 1087 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lea's Chemistry of Cement and Concrete deals with the chemical and physical properties of cements and concretes and their relation to the practical problems that arise in manufacture and use. As such it is addressed not only to the chemist and those concerned with the science and technology of silicate materials, but also to those interested in the use of concrete in building and civil engineering construction. Much attention is given to the suitability of materials, to the conditions under which concrete can excel and those where it may deteriorate and to the precautionary or remedial measures that can be adopted. First published in 1935, this is the fourth edition and the first to appear since the death of Sir Frederick Lea, the original author. Over the life of the first three editions, this book has become the authority on its subject. The fourth edition is edited by Professor Peter C. Hewlett, Director of the British Board of Agrement and visiting Industrial Professor in the Department of Civil Engineering at the University of Dundee. Professor Hewlett has brought together a distinguished body of international contributors to produce an edition which is a worthy successor to the previous editions.
Author : A. Nameh
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (643 download)
Download or read book The Effects of Accelerated Curing on the Performance of OPC Concrete Containing Pulverized Fuel Ash written by A. Nameh and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenneth H. McGhee
Publisher :
ISBN 13 :
Total Pages : 47 pages
Book Rating : 4.:/5 (93 download)
Download or read book Water Bath Accelerated Curing of Concrete written by Kenneth H. McGhee and published by . This book was released on 1970 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: Water bath methods for accelerating the strength development of portland cement concrete were investigated in a two phase study as follows. Phase I - Participation in a cooperative accelerated strength testing program sponsored by the American Society for Testing and Materials. The three methods studied consisted of; (1) curing immediately after casting in 95°F water for 24 hours, (2) curing in boiling water for 3 1/2 hours, commencing 23 hours after casting, and (3) curing in boiling water for 15 hours commencing after the concrete reached a penetration resistance of 3500 psi (fixed set). Phase II - A study of the effects on the results of the fixed set accelerated curing methods of curing water temperatures from 95°F to 212°F. Also considered were certain heat transfer parameters relevant to strength development. The major conclusions were: Phase I 1. The fixed set boiling method is the most efficient and reliable of those studied. 2. Water bath accelerated curing is more efficient for high than for low strength concretes. 3. Water bath and standard moist curing produce strength results of about equal reproducibility. Phase II 1. Accelerated curing efficiencies are directly proportional to the total relative amounts of heat released by the concretes during accelerated curing. 2. Boiling (212°F) water is not conducive to optimum curing efficiency. 3. Optimum water bath temperatures for accelerated concrete strength development range approximately from 165° to 180°F. The duration of accelerated curing is not critical for the fixed set boiling method.
Author : Duff An. Abrams
Publisher : Forgotten Books
ISBN 13 : 9781334197697
Total Pages : 40 pages
Book Rating : 4.1/5 (976 download)
Download or read book Effect of Curing Condition on the Wear and Strength of Concrete (Classic Reprint) written by Duff An. Abrams and published by Forgotten Books. This book was released on 2016-11-07 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Effect of Curing Condition on the Wear and Strength of Concrete The necessity for careful restriction on the quantity of mixing water used in concrete, and the importance of proper curing conditions during the period of setting and hardening are not generally appreciated by engineers and contractors doing concrete work. In view of the wide spread use oi concrete in the construction of pavements, oors, loading platforms, and in other places requiring high strength and resistance to abrasion, it seemed desirable to carry out an experimental study which would bring out the effect Of water content and curing conditions on the compressive strength and the wearing resistance of concrete, and the relation between these two properties. These tests were made as a part of the experimental studies of the properties of concrete and concrete materials, being carried out through the co - operation of Lewis Institute and the Portland Cement Association at the Structural Materials Research Laboratory, Lewis Institute, Chicago. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."
