Early-age Thermal Crack Control in Concrete PDF Download
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Author: P. B. Bamforth
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 116
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Book Description
This guide provides a method for estimating the magnitude of crack inducing strain and the risk of cracking; and where cracking will occur guidance is provided on the design of reinforcement to control crack widths.
Author: P. B. Bamforth
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 116
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Book Description
This guide provides a method for estimating the magnitude of crack inducing strain and the risk of cracking; and where cracking will occur guidance is provided on the design of reinforcement to control crack widths.
Author: T. A. Harrison
Publisher:
ISBN: 9780860173298
Category : Composite materials
Languages : en
Pages : 57
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Book Description
This text brings together knowledge on early-age thermal cracking, which occurs when the restrained thermal contraction strain exceeds the tensile strain capacity of the concrete. It aims to help both the designer and contractor to understand the significance of cracking, the mechanisms and factors influencing early-age thermal cracking, and its methods of control. Thermal expansion, temperature fall from a peak during hydration of the cement and restraint factors are all discussed. The book shows how early-age thermal strains can be reduced by taking appropriate measures during the design and construction of concrete elements, and develops equations for the control of crack width.
Author: R. Springenschmid
Publisher: CRC Press
ISBN: 9780419187103
Category : Architecture
Languages : en
Pages : 500
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Book Description
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.
Author: R. Springenschmid
Publisher: CRC Press
ISBN: 1482271818
Category : Architecture
Languages : en
Pages : 365
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Book Description
An important new report from the RILEM Technical Committee 119. This book presents models and methods to determine thermal stresses and cracking risks in concrete. The possible influences on and causes of thermal cracking of concrete are discussed and cases of practical measures for avoiding cracking are detailed.
Author: R. Springenschmid
Publisher: CRC Press
ISBN: 9780419223108
Category : Architecture
Languages : en
Pages : 376
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Book Description
An important new report from the RILEM Technical Committee 119. This book presents models and methods to determine thermal stresses and cracking risks in concrete. The possible influences on and causes of thermal cracking of concrete are discussed and cases of practical measures for avoiding cracking are detailed.
Author: Francis Barre
Publisher: John Wiley & Sons
ISBN: 1786300524
Category : Technology & Engineering
Languages : en
Pages : 256
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Book Description
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.
Author: Eduardo M.R. Fairbairn
Publisher: Springer
ISBN: 3319766171
Category : Technology & Engineering
Languages : en
Pages : 432
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Book Description
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.
Author: Dejian Shen
Publisher: Springer Nature
ISBN: 9819714958
Category :
Languages : en
Pages : 447
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Book Description
Author: Zhu Bofang
Publisher: Butterworth-Heinemann
ISBN: 0124078540
Category : Technology & Engineering
Languages : en
Pages : 525
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Book Description
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
Author: Fragkoulis Kanavaris
Publisher: Springer Nature
ISBN: 3030729214
Category : Technology & Engineering
Languages : en
Pages : 406
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Book Description
This volume gathers the latest advances, innovations and applications in the field of crack control in concrete, as presented by leading international researchers and engineers at the International RILEM Conference on Early-age and Long-term Cracking in RC Structures (CRC 2021), held in Paris, France on April 9, 2021. It covers early-age and long-term imposed deformations in concrete, analytical formulations for calculating crack widths in concrete, numerical simulations of early-age and long-term restrained behaviour of concrete elements, experimental investigations on cracking, on-site monitoring of imposed deformations and cracking, crack control and repair, and sustainability of design and remediation. The conference demonstrated that a comprehensive approach to this problem requires the design of robust experimental techniques, the development of multiscale models and the evaluation of code-based and other analytical approaches relevant to crack control in concrete. The contributions, which were selected through a rigorous international peer-review process, share exciting ideas that will spur novel research directions and foster new multidisciplinary collaborations.
