Download or read book Studies and Procedures for the Control of Cracking in Mass Concrete Structures written by Charles L. Townsend and published by . This book was released on 1964 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies and Procedures for the Control of Cracking in Mass Concrete Structures written by C. L. Townsend and published by . This book was released on 1964 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies and Procedures for the Control of Cracking in Mass Concrete Structures written by Charles L. Townsend and published by . This book was released on 1964 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cracking occurs in mass concrete when tensile stresses exceed the tensile strength of the concrete. Most of these stresses are caused by restraint against volume change; others occur because of loading conditions and the configuration of the structure. To estimate future tensile stresses, temperature studies must be made to determine the temperature changes which will occur in a structure from the time concrete is first placed in the structure until the structure is in normal operation. These temperature changes are made a part of the design and construction of the structure. The range or amplitude of mean concrete temperature in a mass concrete structure is of primary interest, but temperature gradients are also investigated. The heat of hydration of the cement, the concrete mix proportions, the diffusivity of the concrete, amplitudes of air and reservoir temperatures, and solar radiation affect the concrete temperatures. Knowing the concrete temperatures and temperature changes to be encountered, the width and length of the construction block is determined, the precooling and/or artificial cooling measures are selected, and construction requirements are determined. Included in the latter are surface treatments, operation of cooling systems, height differentials, and foundation irregularities. (Author).

Download or read book Thermal Cracking of Massive Concrete Structures written by Eduardo M.R. Fairbairn and published by Springer. This book was released on 2018-05-23 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a State of the Art Report (STAR) produced by RILEM Technical Committee 254-CMS ‘Thermal Cracking of Mas-sive Concrete Structures’. Several recent developments related to the old problem of understanding/predicting stresses originated from the evolution of the hydration of concrete are at the origin of the creation this technical committee. Having identified a lack in the organization of up-to-date scientific and technological knowledge about cracking induced by hydration heat effects, this STAR aims to provide both practitioners and scientists with a deep integrated overview of consolidated knowledge, together with recent developments on this subject.

Download or read book Control of Cracking in Reinforced Concrete Structures written by Francis Barre and published by John Wiley & Sons. This book was released on 2016-08-29 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents new guidelines for the control of cracking in massive reinforced and prestressed concrete structures. Understanding this behavior during construction allows engineers to ensure properties such as durability, reliability, and water- and air-tightness throughout a structure’s lifetime. Based on the findings of the French national CEOS.fr project, the authors extend existing engineering standards and codes to advance the measurement and prediction of cracking patterns. Various behaviors of concrete under load are explored within the chapters of the book. These include cracking of ties, beams and in walls, and the simulation and evaluation of cracking, shrinkage and creep. The authors propose new engineering rules for crack width and space assessment of cracking patterns, and provide recommendations for measurement devices and protocols. Intended as a reference for design and civil engineers working on construction projects, as well as to aid further work in the research community, applied examples are provided at the end of each chapter in the form of expanded measurement methods, calculations and commentary on models.

Download or read book Control of Cracking in Mass Concrete Structures written by C. L. Townsend and published by . This book was released on 1965 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Cracking in Mass Concrete Structures written by C.L. Townsend and published by . This book was released on 1981 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of cracking in mass concrete structures written by Charles L. Tousend and published by . This book was released on 1965 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Causes Mechanism and Control of Cracking in Concrete written by ACI Committee 224--Cracking and published by . This book was released on 1968 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermal Stresses and Temperature Control of Mass Concrete written by Zhu Bofang and published by Butterworth-Heinemann. This book was released on 2013-12-11 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods of controlling mass concrete temperatures range from relatively simple to complex and from inexpensive too costly. Depending on a particular situation, it may be advantageous to use one or more methods over others. Based on the author’s 50 years of personal experience in designing mass concrete structures, Thermal Stresses and Temperature Control of Mass Concrete provides a clear and rigorous guide to selecting the right techniques to meet project-specific and financial needs. New techniques such as long time superficial thermal insulation, comprehensive temperature control, and MgO self-expansive concrete are introduced. Methods for calculating the temperature field and thermal stresses in dams, docks, tunnels, and concrete blocks and beams on elastic foundations Thermal stress computations that take into account the influences of all factors and simulate the process of construction Analytical methods for determining thermal and mechanical properties of concrete Formulas for determining water temperature in reservoirs and temperature loading of arched dams New numerical monitoring methods for mass and semi-mature aged concrete

Download or read book Causes and Control of Cracking in Concrete Reinforced with High Strength Steel Bars a Review of Research written by Elmer Eugene Reis and published by . This book was released on 1964 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Cracking in Reinforced Concrete Structures written by Francis Barre and published by . This book was released on 2016 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crack Control of Mass Concrete and Related Issues Concerning Early age of Concrete Structures written by and published by . This book was released on 2012 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 500 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 Surface Cracking of Mass Concrete Structures at Early Form Removal written by Torben C. Hansen and published by . This book was released on 1966 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Control of Cracking and Durability of Reinforced Concrete Structures written by and published by . This book was released on 2014 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains technical and scientific information presented at the 4th workshop "Control of Cracking and Durability of Reinforced Concrete Structures", held on 20-21 March 2014 at the Joint Research Centre, Ispra, Italy. Co-sponsored by the Joint Research Centre, this event was the fourth of a series of "Control of Cracking" workshops (ConCrack) organised by the French research programme CEOS.fr. This programme was the framework set up by French professionals to make a decisive step in the predictive capacity of models to describe the state of cracking of buildings and civil engineering works, with the final objective of developing tools for designers and support the evolution of standards. The main purpose of the workshop was to improve engineering practices related to the cracking process in special massive concrete structures, thus enhancing the prediction of crack evolution during the service life of special structures. The international scientific and engineering community acknowledged the significance of the research findings and the practical results presented at the workshop enabling the exchange of expert know-how and codification. There was a strong motivation among participants to pursue further research work on the topic of cracking and durability of massive concrete structures, addressing aspects of cost, safety and sustainability.