Download or read book Investigation Into the Effect of Water cement Ratio on the Freezing thawing Resistance of Non air and Air entrained Concrete written by and published by . This book was released on 1955 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation Into Freezing thawing Durability of Low Permeability Concrete with and Without Air Entraining Agent written by Kejin Wang and published by . This book was released on 2009 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the present study is to investigate the effect of low-permeability concrete, made with reduced water-to-binder ratios (w/b) and/or supplementary cementitious materials (SCMs), on the need for air entrainment to achieve freezing-thawing (F-T) durability. In the present study, concrete mixes were made with different types of cement (Type I and IP), with or without fly ash replacement (15%), with different water-to-binder ratios (w/b=0.25, 0.35, 0.45 and 0.55), and with or without air entraining agent (AEA). All concrete mixtures were controlled to have a similar slump by using different dosages of superplasticizer. The rapid chloride permeability and F-T durability of the concrete samples were determined according to ASTM C1202 and ASTM C666A, respectively. The air void structure of the concrete was studied using the Air Void Analyzer, Rapid Air, and porosity tests (ASTM C642). In addition, the general concrete properties, such as slump, air content, unit weight, and 28-day compressive strength, were evaluated. The results indicate that all concrete mixes with proper air entrainment (ASTM C23 air content greater than or equal to 6%) showed good F-T resistance (durability factor greater than or equal to 86%). All concrete mixes without AEA showed poor F-T resistance (durability factor less than 40%), except for one mix that had very low permeability and high strength. This was the concrete made with Type IP cement and with a w/b of 0.25, which had a permeability of 520 coulombs and a compressive strength of 12,760 psi (88 MPa). There were clear relationships between the F-T durability and hardened concrete properties of non-air entrained concrete. However, such relationships did not exist in concrete with AEA. For concrete with AEA, good F-T durability was associated with an air void spacing factor less than or equal to 0.28 mm (by AVA) or less than or equal to 0.22 mm (by RapidAir).

Download or read book Freezing and Thawing of Concrete and Use of Silicones written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1963 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Entrained Air on Resistance to Accelerated Laboratory Freezing and thawing of Concrete Specimens Made with Expanded Lightweight Aggregates written by Waterways Experiment Station (U.S.) and published by . This book was released on 1958 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Freezing and Thawing Resistance of High strength Concrete written by Robert E. Philleo and published by . This book was released on 1986 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments have made a new generation of high-strength concrete a viable material for routine construction. The two principal developments are high-range water-reducing admixtures, which permit the placement of concrete of very low water-cement ratio, and silica fume, a pozzolan of extremely high fineness. The advent of this high- strength concrete has put requirements for strength and durability in conflict. Because entrained air reduces the strength of concrete, builders seek to eliminate or limit the use of entrained air. There are those who argue that high-strength concrete is of such a quality that entrained air is unnecessary. Much of the high-strength concrete currently being used is in buildings, where the question of durability is minor. The question, however, cannot be avoided in exposed highway structures. Service records of non-air-entrained high-strength concrete exposed to freezing are not conclusive. Hence, this report synthesizes the available knowledge on the subject. Its aim is to provide guidance to those who wish to use high-strength concrete in typical highway applications and to indicate where further information is needed.

Download or read book Air Entrainment in Concrete Design written by Waterways Experiment Station (U.S.) and published by . This book was released on 1947 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Supplementary Cementing Materials written by Rafat Siddique and published by Springer Science & Business Media. This book was released on 2011-03-28 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an attempt to consolidate the published research related to the use of Supplementary Cementing Materials in cement and concrete. It comprises of five chapters. Each chapter is devoted to a particular supplementing cementing material. It is based on the literature/research findings published in journals/conference proceeding, etc. Topics covered in the book are; coal fly ash, silica fume (SF), granulated blast furnace slag (GGBS), metakaolin (MK), and rice husk ash (RHA). Each chapter contains introduction, properties of the waste material/by-product, its potential usage, and its effect on the properties of fresh and hardened concrete and other cement based materials.

Download or read book Journal of the American Concrete Institute written by American Concrete Institute and published by . This book was released on 1986 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of High strength Frost resistant Concrete written by William O. Tynes and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report of Progress on Engineering Research written by United States. Bureau of Reclamation and published by . This book was released on 1960 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Special Report Highway Research Board written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1962 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book PRO 1 International RILEM Workshop on Durability of High Performance Concrete written by H. Sommer and published by RILEM Publications. This book was released on 1995 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Building Science Series written by and published by . This book was released on 1971-11 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reviews in Engineering Geology written by David J. Varnes and George Kiersch and published by Geological Society of America. This book was released on with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Effects of Air Void Parameters and Water cementitious Ratio on the Durability Performance of Portland Cement Concrete written by Richard A. Walls and published by . This book was released on 2000 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structure and Performance of Cements written by P. Barnes and published by CRC Press. This book was released on 2002-11-01 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing together a multinational team of authors, this second edition of Structure and Performance of Cements highlights the latest global advances in the field of cement technology. Three broad categories are covered: basic materials and methods, cement extenders, and techniques of examination. Within these categories consideration has been given