Download or read book Temperature Changes and Thermal Cracking in Concrete Pavements at Early Statees by J G Hunt written by J. G. Hunt and published by . This book was released on 1972 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rural and Urban Roads written by and published by . This book was released on 1972 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A laboratory study of early age thermal cracking of concrete written by J.G. Hunt and published by . This book was released on 1971 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Guide to Evaluating Thermal Effects in Concrete Pavements written by Per Just Andersen and published by . This book was released on 1993 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the use of tables developed to help determine problems that may result from early thermal effects in concrete. The thermal behavior of concrete can be estimated from a knowledge of concrete temperature, air temperature, type of cement, and content of cement in the mixture. The thermal effects tables can be used to predict whether too high a temperature will be reached in the pavement; whether early thermal cracking will result from larger differences between the temperature of the concrete slab and the temperature of either the air or the base; or whether there is a risk of early cracking of the concrete. Examples of the use of the table are given along with guidelines for avoiding undesirable thermal effects.
Download or read book A Laboratory Study of Early age Thermal Cracking of Concrete written by J. G. Hunt (engineer.) and published by . This book was released on 1971 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Register of Research written by and published by . This book was released on 1975 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Early Age Temperature Development in Concrete Pavements Containing Microencapsulated Phase Change Materials written by ZHENYU SHE and published by . This book was released on 2018 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigates experimentally and numerically the addition of microencapsulated phase change materials (PCMs) into concrete pavements at early ages to limit (i) temperature rise caused by cement-water hydration, (ii) cooldown rate, and (iii) the associated risk of thermal cracking. First, the effect of water-reducing admixture (WRA) on the heat generation rate from cement hydration was quantified using isothermal calorimetry. Second, large cubic PCM-mortar composite specimens representative of a common pavement geometry were prepared and placed in an environmental test chamber simulating realistic diurnal conditions. The results showed that the presence of PCM can reduce considerably the temperature rise and cooldown rate across the cementitious composite section within the first 24 hours following placement provided the PCM melting temperature is selected carefully. This was in spite of the fact that the lower thermal conductivity of PCM-composites inhibited heat dissipation. A transient 1D thermal model of pavement section was developed to simulate the temperature evolution and the rate of change in temperature within PCM-mortar composite sections. Good agreement was found between model predictions and experimental measurements. In addition, a parametric study was carried out to assess the effects of the PCM melting characteristics (temperature, temperature window, latent heat) on local temperature in PCM-mortar composites. The constitutive relationships and the numerical model developed as part of this study can be used to inform the design of concrete pavements containing PCMs for early-age crack resistance.
Download or read book Thermal Cracking in Concrete at Early Ages written by R. Springenschmid and published by CRC Press. This book was released on 1994-10-13 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: Restraint and intrinsic stresses in concrete at early ages are vitally important for concrete structures which must remain free of water-permeable cracks, such as water-retaining structures, tunnel linings, locks and dams. The development of hydration heat, stiffness and strength, also the degree of restraint and, especially for high-strength concrete, non-thermal effects, are decisive for sensitivity to cracking. Determining thses stresses in the laboratory and in construction components has led to a clearer understanding of how they develop and how to optimize mix design, temperature and curing conditions. New testing equipment has enabled the effects of all the important parameters to be qualified and more reliable models for predictiong restraint stresses to be developed. Thermal Cracking in Conrete at Early Ages contains 56 contributions by leading international specialists presented at the RILEM Symposium held in October 1994 at the Technical University of Munich. It will be valuable for construction and site engineers, concrete technologists and scientists.
Download or read book The Early Age Thermal Cracking of Concrete Road Slabs written by John Gratland Hunt and published by . This book was released on 1970 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magazine of Concrete Research written by and published by . This book was released on 1977 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HRIS Abstracts written by National Research Council (U.S.). Highway Research Information Service and published by . This book was released on 1974 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book National Union Catalog written by and published by . This book was released on 1973 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes entries for maps and atlases.
Download or read book Roads and Streets written by and published by . This book was released on 1973 with total page 1090 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues for include section: Bituminous roads and streets.
Download or read book Bibliography on Snow Ice and Frozen Ground with Abstracts written by and published by . This book was released on 1978 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plain Concrete at Early Ages written by Jan Byfors and published by . This book was released on 1980 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pavement Design and Materials written by A. T. Papagiannakis and published by John Wiley & Sons. This book was released on 2017-02-22 with total page 555 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive, state-of-the-art guide to pavement design and materials With innovations ranging from the advent of SuperpaveTM, the data generated by the Long Term Pavement Performance (LTPP) project, to the recent release of the Mechanistic-Empirical pavement design guide developed under NCHRP Study 1-37A, the field of pavement engineering is experiencing significant development. Pavement Design and Materials is a practical reference for both students and practicing engineers that explores all the aspects of pavement engineering, including materials, analysis, design, evaluation, and economic analysis. Historically, numerous techniques have been applied by a multitude of jurisdictions dealing with roadway pavements. This book focuses on the best-established, currently applicable techniques available. Pavement Design and Materials offers complete coverage of: The characterization of traffic input The characterization of pavement bases/subgrades and aggregates Asphalt binder and asphalt concrete characterization Portland cement and concrete characterization Analysis of flexible and rigid pavements Pavement evaluation Environmental effects on pavements The design of flexible and rigid pavements Pavement rehabilitation Economic analysis of alternative pavement designs The coverage is accompanied by suggestions for software for implementing various analytical techniques described in these chapters. These tools are easily accessible through the book’s companion Web site, which is constantly updated to ensure that the reader finds the most up-to-date software available.
Download or read book Bibliography on Cold Regions Science and Technology written by and published by . This book was released on 1994 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
