Download or read book Effectiveness of Mineral Admixtures in Preventing Excessive Expansion of Concrete Due to Alkali aggregate Reaction written by U.S. Army Engineer Waterways Experiment Station and published by . This book was released on 1958 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cement Replacement Materials written by Ali Akbar Ramezanianpour and published by Springer Science & Business Media. This book was released on 2013-09-24 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to present the latest findings in the properties and application of Supplementary Cementing Materials and blended cements currently used in the world in concrete. Sustainability is an important issue all over the world. Carbon dioxide emission has been a serious problem in the world due to the greenhouse effect. Today many countries agreed to reduce the emission of CO2. Many phases of cement and concrete technology can affect sustainability. Cement and concrete industry is responsible for the production of 7% carbon dioxide of the total world CO2 emission. The use of supplementary cementing materials (SCM), design of concrete mixtures with optimum content of cement and enhancement of concrete durability are the main issues towards sustainability in concrete industry.
Download or read book Guidelines for Concrete Mixtures Containing Supplementary Cementitious Materials to Enhance Durability of Bridge Decks written by John S. Lawler and published by Transportation Research Board. This book was released on 2007 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: NCHRP Report 566 is designed to help facilitate the use of supplementary cementitious materials to enhance durability of concrete used in highway construction, especially bridge decks. The report includes a methodology for selecting optimum concrete mixture proportions that focuses on durability aspects of concrete and the performance requirements for specific environmental conditions. The methodology is presented in a text format and as a computational tool, in the form of a Visual Basic?driven Microsoft Excel spreadsheet. Background information and a hypothetical case study was published as NCHRP Web-Only Document 110: Supplementary Cementitious Materials to Enhance Durability of Concrete Bridge Decks. The Statistical Experimental Design for Optimizing Concrete (SEDOC), the computational tool for the concrete mixture optimization methodology, and the user?s guide are available in a ZIP format for download.
Download or read book Alkalies in Concrete written by Vance H. Dodson and published by ASTM International. This book was released on 1986 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Use of Lithium to Prevent Or Mitigate Alkali silica Reaction in Concrete Pavements and Structures written by Michael D. A. Thomas and published by . This book was released on 2007 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alkali-silica reaction (ASR) was first identified as a form of concrete deterioration in the late 1930s (Stanton 1940). Approximately I0 years later, it was discovered that lithium compounds can he used to control expansion due to ASR. There has recently been increased interest in using lithium technologies to both control ASR in new concrete arid to retard the reaction in existing ASR-affected structures. This facts book provides information on lithium, its origin and properties, and on its applications. The mechanism of alkali-silica reaction is discussed together with methods of testing to identify potentially alkali-silica reactive aggregates. Traditional methods fix minimizing the risk of damaging ASR are presented; these include the avoidance of reactive aggregates, controlling the levels of alkali in concrete and using supplementary cementing materials such as fly ash, slag and silica fume. The final two sections of 'this facts book discuss the use of lithium first as an admixture for new concrete construction and second as a treatment for existing concrete structures affected by ASR.
Download or read book Significance of Tests and Properties of Concrete and Concrete making Materials written by Paul Klieger and published by ASTM International. This book was released on 1994 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of Fly Ash Slag Or Silica Fume to Inhibit Alkali silica Reactivity written by Daniel Stephen Lane and published by . This book was released on 1995 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study had two objectives: (1) to evaluate the effectiveness of particular mineral admixtures when combined with portland cements of varying alkali content in preventing expansion due to alkali-silica reactivity (ASR), and (2) to determine if set minimum amounts of various types of mineral admixtures could be established for use with cements of varying alkali content to provide protection from ASR. Mortar bars made with Pyrex glass aggregate were stored moist at 38 ° C for 366 days and measured periodically for length change. Control mortars were mixed with portland cements having an alkali content ranging from 0.18% to 0.92% Na20 equivalent. Test mortars were mixed replacing various percentages of portland cement with Class F fly ash (15%, 25%, and 35%), slag (20%, 35%, and 50%), or silica fume (3% and 7%). Test mortars were also mixed using IP cement produced using Class F fly ash (18%, 20%, and 22%). Expansions of control mortars with alkali contents of 0.4% or less were negligible through the 336-day test period. With cements having an alkali content above 0.4%, equilibrium between cement alkali content and mortar bar expansion was reached at 56 days, when a strong linear relationship between increasing expansion and increasing alkali content developed. A regression analysis was performed on data from the control batches, and the resulting equation was used to normalize data from the test batches. The expansion of mortars containing fly ash, slag, and silica fume was lower than the expansion of the control batches for portland cement having an alkali content of 0.6% and above for all replacement levels of the tested materials. The amount of expansion varied with the type of material, percentage replacement, and cement alkali content. Using an expansion of 0.10% as the maximum indicative of acceptable performance in inhibiting ASR, minimum amounts of Class F fly ash, slag, and silica fume were established for use with portland cement depending on the alkali content of the cement.
Download or read book Significance of Tests and Properties of Concrete and Concrete making Materials written by Joseph F. Lamond and published by ASTM International. This book was released on 2006 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alkali Aggregate Reaction in Concrete written by Marc-Andre Berube and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transportation Research Record written by and published by . This book was released on 1974 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book RCC Dams Roller Compacted Concrete Dams written by Luis Berga and published by Routledge. This book was released on 2018-04-27 with total page 1240 pages. Available in PDF, EPUB and Kindle. Book excerpt: A book of broad interest to professionals, dam engineers and managers, and to organizations responsible for dam development and management, RCC Dams offers a topical account of the design and operation of roller compacted concrete dams, describing the latest developments and innovative technologies in the field. The book considers planning and design, materials and construction, as well as the operation and performance of RCC dams.
Download or read book Annual Summary of Investigations in Support of the Civil Works Program written by Waterways Experiment Station (U.S.) and published by . This book was released on 1962 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ACI Materials Journal written by and published by . This book was released on 2002 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multi Functional Materials and Structures II written by Yan Sheng Yin and published by Trans Tech Publications Ltd. This book was released on 2009-08-31 with total page 2349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Selected, peer reviewed papers from the 2nd International Conference on Multi-functional Materials and Structures, October 9-12, 2009, Qingdao, Shandong, P. R. China
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 Journal of the American Concrete Institute written by American Concrete Institute and published by . This book was released on 1984 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each number includes "Synopsis of recent articles."
Download or read book Handbook for Concrete and Cement written by United States. Army. Corps of Engineers and published by . This book was released on 1949 with total page 1300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
