Download or read book Effect of Retarders water Reducers on Slump Loss in Superplasticized Concrete written by Vangipuram Seshachar Ramachandran and published by . This book was released on 1981 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Slump Loss and Freeze thaw Resistance of Superplasticized Concrete written by J. Francis Young and published by . This book was released on 1983 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Mixing Temperature on Slump Loss and Setting Time of Concrete Containing High Range Water Reducers written by D. Whiting and published by . This book was released on 1980 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concretes containing high-range water reducers (HRWR) based on naphthalene (NHRWR) and melamine (MHRWR) condensation products were batched, mixed, and tested at temperatures of 7, 16, 23, and 32°C (45, 60, 73, and 90°F). The amount of HRWR necessary to obtain a fixed slump and water-cement ratio was found to increase with a decrease in temperature below 23°C (73°F) and to remain fairly constant from 23 to 32°C (73 to 90°F). Slump loss showed a significant increase with an increase in temperature across the entire range studied. Mixtures containing melamine-based HRWR exhibited somewhat higher rates of slump loss than did those containing naphthalene-based HRWR when a cement containing a moderately high tricalcium aluminate (C3A) content was used. No consistent differences in slump loss were found between the two admixtures when a cement with a somewhat lower C3A content was tested. At the dosages used in this study, HRWR exhibited significant, though not excessive, retardation of set. It was found that certain combinations of HRWR and lignosulfonate or hydroxycarboxylic acid type retarders can have a moderating effect on slump loss at elevated temperatures.
Download or read book Superplasticizers and Other Chemical Admixtures in Concrete written by and published by . This book was released on 1989 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Slump Loss and Freeze thaw Resistance of Superplasticized Concrete written by J. Francis Young and published by . This book was released on 1983 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Slump Loss and Retempering of Superplasticized Concrete written by J. Francis Young and published by . This book was released on 1983 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Concrete Admixtures Handbook 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.
Download or read book Handbook of Thermal Analysis of Construction Materials written by V.S. Ramachandran and published by William Andrew. This book was released on 2002-10-28 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book containing essential information on the applicability of thermal analysis techniques to evaluate inorganic and organic materials in construction technology should serve as a useful reference for the scientist, engineer, construction technologist, architect, manufacturer, and user of construction materials, standard-writing bodies, and analytical chemists. The material scientists at the National Research Council of Canada have established one of the best thermal analysis laboratories in the world. Various types of thermal analysis techniques have been applied successfully to the investigation of inorganic and organic construction materials. These studies have provided important information on the characterization of raw as well as finished materials, quality control, quantitative estimation, interrelationships between physical, chemical, mechanical, and durability characteristics. Information on the application of thermal analysis to construction materials is dispersed in literature and hence the IRC scientists embarked on producing a handbook, the first of its kind, incorporating the latest knowledge available in this field of activity. Almost all important construction materials have been included.
Download or read book Superplasticizers written by Vangipuram Seshachar Ramachandran and published by Natural Resources Canada, Canada Centre for Mineral and Energy Technology. This book was released on 1997 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has been prepared with the aim of integrating information about the chemistry and application of concrete superplasticizers in a manner relevant to concrete engineers and technologists. The opening chapter introduces basic aspects of concrete science as background for what follows. Chapters 2-4 discuss the chemical synthesis of superplasticizers, methods used to characterize those chemicals, and techniques for evaluation of their effect in cementitious systems. Subsequent chapters cover: the influence of superplasticizers on hydration of cement materials; rheology of cementitious systems; issues related to the mode of action and compatibility of superplasticizers; the effect of superplasticizers on fresh concrete; mechanical properties and durability of concrete; innovative applications of superplasticizers in concrete; superplasticizer dispensing, specifications, and standards; patents related to superplasticizers; and current and future trends in the use of superplasticizers in concrete.
Download or read book Application of Admixtures in Concrete written by A.M. Paillere and published by CRC Press. This book was released on 2004-03-01 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough review of the properties and use of the principal chemical admixtures for use in concrete. Concise and clearly presented, the book includes extensive references to key sources of information. The presentation of each admixture is in a standard format, which helps the reader to find relevant information easily.
Download or read book Superplasticizers written by V. M. Malhotra and published by 1979.. This book was released on 1979 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superplasticizers in Concrete written by and published by . This book was released on 1979 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of the American Concrete Institute written by American Concrete Institute and published by . This book was released on 1982 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Superplasticizers and Other Chemical Admixtures in Concrete written by and published by . This book was released on 1989 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Admixtures for Concrete written by Sandra Senft and published by CRC Press. This book was released on 1999-06-24 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical admixtures are used in concrete mixtures to produce particular engineering properties such as rapid hardening, water-proofing or resistance to cold. Chemical Admixtures for Concrete surveys recent developments in admixture technology, explaining the mechanisms by which admixtures produce their effects, the various types of admixtures avail
Download or read book Superplasticizers and Other Chemical Admixtures in Concrete written by V. M. Malhotra and published by . This book was released on 1989 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory of Concrete Slump Loss Related to Use of Chemical Admixtures written by L. M. Meyer and published by . This book was released on 1980 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
