Download or read book Freeze thaw Durability of Non air Entrained Concrete with Normal and Lightweight Aggregates written by Steven R. Matheny and published by . This book was released on 2010 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freeze thaw Durability of Non air Entrained Concrete with Normal and Lighweight Aggregates written by Steven R. Matheny and published by . This book was released on 2010 with total page 238 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 Effect of Degree of Synthetic Lightweight Aggregate Pre wetting on the Freeze thaw Durability of Lightweight Concrete written by C. N. Kanabar and published by . This book was released on 1966 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Freeze thaw Durability of Aggregate in Concrete written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1956 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Paper 1 presents laboratory freeze-thaw results as well as field observations on the major Michigan aggregate sources and is considered a first step in formulation of a policy regarding acceptance of future aggregates of unknown service behavior.
Download or read book Thermal Analysis of the Freeze thaw Mechanisms in Concrete written by James H. Havens and published by . This book was released on 1961 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Freeze Thaw Durability of Concrete written by J. Marchand and published by CRC Press. This book was released on 2004-03-01 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete durability in climates where freezing and thawing occurs is a continuing problem. It is particularly acute for highway and bridge structures, where de-icing salts are used to combat the effects of frost, snow and ice. These salts can cause damage to concrete and accelerate corrosion of reinforcements. This book presents the latest international research on this area, with contributions from North America and Europe which were presented at an international RILEM workshop.
Download or read book Freeze Thaw Durability of Nonair Entrained High Strength Concretes Containing Superplasticizers written by SM. Khalil and published by . This book was released on 1980 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Superplasticizing chemical admixtures enable the production of either flowing concrete or concrete with normal workability with very low water/cement (W/C) ratios. The production of low W/C ratio concrete with high strength is of considerable interest to the precast concrete industry. However, it has often proved very difficult, when using superplasticizing chemical admixtures, to entrain an adequate air void system in these low W/C ratio concretes, giving rise to uncertainty regarding the freeze-thaw durability of such concretes. Using ASTM Test for Critical Dilation of Concrete Specimens Subjected to Freezing (C 671 - 77) and Test for Resistance of Concrete to Rapid Freezing and Thawing (C 666 - 77), it is shown that the durability of low W/C ratio, nonair-entrained concrete containing superplasticizers is markedly affected by the aggregate source. Tests conducted on concrete batched at a number of precast concrete plants in Western Canada show that adequate durability may be achieved with some of the principal aggregate sources currently used in precast concrete production.
Download or read book Lightweight Aggregate Concrete written by Satish Chandra and published by Elsevier. This book was released on 2002-10-28 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of the increasing use and demand for lightweight aggregate concrete (LWAC), there is still a lack of adequate explanations to understand the mechanisms responsible for the strength and durability properties of LWAC. This book is written to give an overall picture of LWAC, from the historical background, aggregate production, proportioning and production of concrete, to applications in structures. Physical properties and chemical durability are described in detail. The physical properties include density, strength, shrinkage, and elasticity. Chemical durability includes resistance to acids, chloride ingress, carbonation, and freeze-thaw resistance. Fire resistance is also included, which is seldom considered, but is a very important aspect of the safety of the structure. Microstructure development and its relation to the durability properties of LWAC generally are not highlighted in the literature. The development of bonds, the microstructure with different binder systems, and different types of lightweight aggregates are explained. They show how lightweight aggregate concrete differs from normal weight concrete. The chapters on chloride ingress and freeze-thaw resistance are detailed because of the use of LWAC in offshore construction. The economical aspects of using LWAC are also reviewed. Emphasis is placed on the fact that although the cost of LWAC is high, the total cost of construction has to be considered, including the cost of transport, reinforcement, etc. When these are considered then LWAC becomes cheaper and attractive. The life cycle cost of the concrete is another consideration for calculating long-term savings on maintenance costs.
Download or read book Structural Lightweight Aggregate Concrete written by Dr J L Clarke and published by CRC Press. This book was released on 2002-11-01 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lightweight aggregate concrete is undergoing something of a renaissance. Although this material has been available for many years, only now is it being used more widely. This book provides a comprehensive review of this growing field from an international perspective.
Download or read book Advanced Concrete Technology Set written by John Newman and published by Elsevier. This book was released on 2003-11-06 with total page 1647 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the Institute of Concrete Technology's advanced course, this new four volume series is a comprehensive educational and reference resource for the concrete materials technologist. An expert international team of authors from research, academia and industry has been brought together to produce this unique reference source. Each volume deals with different aspects of the properties, composition, uses and testing of concrete. With worked examples, case studies and illustrations throughout, this series will be a key reference for the concrete specialist for years to come. - Expert international authorship ensures the series is authoritative - Case studies and worked examples help the reader apply their knowledge to practice - Comprehensive coverage of the subject gives the reader all the necessary reference material
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 Investigation of Resistance of Preplaced aggregate Concrete to Freezing and Thawing written by William O. Tynes and published by . This book was released on 1968 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report on Pervious Concrete written by ACI Committee 522 and published by . This book was released on 2010 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report provides technical information on pervious concrete's application, design methods, materials, properties, mixture proportioning, construction methods, testing, and inspection. The term 'pervious concrete' typically describes a near-zero-slump, open-graded material consisting of portland cement, coarse aggregate, little or no fine aggregate, admixtures, and water." [p. 1]
Download or read book Durability of Concrete written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1956 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the first report adequate resistance to freezing and thawing was obtained when the air content of the mortar fraction was in the range of 9 plus or minus 1 per cent. The report also includes information on the effect of entrained air on strength, resistance to salt scaling, volume change and absorption of these concretes. The second report is a resume to date of investigations conducted to test materials and procedures for protecting concrete pavements against scaling and disintegration caused by calcium chloride and other thawing agents used for ice removal.
Download or read book Freeze thaw Durability of Concrete with Natural and Recycled Concrete Aggregates Using Air Entraining Admixture written by Salman Sulaiman and published by . This book was released on 2016 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freezing and thawing cycles is one of the most damaging factors that affect the durability of concrete. The damages caused by the cyclic freeze-thaw action can be divided into two factors. The first factor is an increase in internal crack, which causes the loss in relative dynamic modulus (RDM) of the concrete and the second factor is surface scaling, which leads to weight loss of the concrete. In this study, the durability of concrete made by replacing natural coarse aggregates (NCA) with various percentages of recycled concrete aggregates (RCA). Also some tests have been conducted with the addition of air entraining admixture (AEA). Prior to mixing the concrete, both NCA and RCA were characterized to determine their suitability as a construction material. Concrete mixes consisting of 0, 20, 40, 60, 80, and 100% replacement (by weight) of NCA with RCA were prepared. The same concrete mixes were prepared again but with the addition of an air entraining admixtures (AEA). All specimens were tested for compressive strength after a curing period of 7, 14, and 28 days. The compressive strength of the concrete made with different percentage of RCA decreases as the percentage of RCA increases. After 28 days of curing, samples with 0, 40, and 100% replacement of NCA with RCA were placed in the freeze-thaw chamber along with 0, 20, 40, 60, 80, and 100% NCA replacement containing AEA. After several cycles of freezing and thawing; the RDM, change in weight and change in length were measured. In this study loss of RDM and weight loss were noticed, as the cyclic freeze-thaw increases. It has also been observed that concrete mixes containing AEA were still durable after 300 cycles of freezing and thawing; however, the specimens without AEA failed before 150 cycles.
