Creep And Hygrothermal Effects In Concrete Structures
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Creep And Hygrothermal Effects In Concrete Structures
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Author : Zdeněk P. Bažant
language : en
Publisher: Springer
Release Date : 2018-01-17
Creep And Hygrothermal Effects In Concrete Structures written by Zdeněk P. Bažant and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-17 with Technology & Engineering categories.
This comprehensive treatise covers in detail practical methods of analysis as well as advanced mathematical models for structures highly sensitive to creep and shrinkage. Effective computational algorithms for century-long creep effects in structures, moisture diffusion and high temperature effects are presented. The main design codes and recommendations (including RILEM B3 and B4) are critically compared. Statistical uncertainty of century-long predictions is analyzed and its reduction by extrapolation is discussed, with emphasis on updating based on short-time tests and on long-term measurements on existing structures. Testing methods and the statistics of large randomly collected databases are critically appraised and improvements of predictions of multi-decade relaxation of prestressing steel, cyclic creep in bridges, cracking damage, etc., are demonstrated. Important research directions, such as nanomechanical and probabilistic modeling, are identified, and the need for separating the long-lasting autogenous shrinkage of modern concretes from the creep and drying shrinkage data and introducing it into practical prediction models is emphasized. All the results are derived mathematically and justified as much as possible by extensive test data. The theoretical background in linear viscoelasticity with aging is covered in detail. The didactic style makes the book suitable as a textbook. Everything is properly explained, step by step, with a wealth of application examples as well as simple illustrations of the basic phenomena which could alternate as homeworks or exams. The book is of interest to practicing engineers, researchers, educators and graduate students.
Creep And Shrinkage
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Author : Hubert Rüsch
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Creep And Shrinkage written by Hubert Rüsch and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
This book is based on Reinforced Concrete-Prestressed Concrete, Volume 2, Accounting for the Effects of Creep and Shrinkage on the Behavior of Structural Systems by Hubert Rusch and Dieter Jungwirth, which appeared in German in 1976. Even then, it was Hubert Rusch's fervent wish to have his thoughts on the deformations of concrete translated into English in order to reach a wider audience. His earlier efforts to contribute a study to the Series of Monographs of the Ameri can Institute had unfortunately not succeeded. Despite a serious illness, Hubert Rusch undertook, with his characteristic prudence and thoroughness, the preparatory work for the translation and related revision of his book. Unfortunately fate did not grant him the satisfaction of seeing his work completed. Hubert Rusch died on October 17, 1979. In writing this book, Hubert Rusch drew on his many years of devoted study of the creep problem. These investigations go back to 1934. His awareness of the plastic deformation of concrete under sustained load, which had been reported to him on the occasion of an American sojourn, led him to discover the causes of a major building collapse. At his urging, Professor A. Hummel published, in 1935, a critical survey of the test results then available on concrete creep.
Fundamental Research On Creep And Shrinkage Of Concrete
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Author : F.H. Wittmann
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Fundamental Research On Creep And Shrinkage Of Concrete written by F.H. Wittmann and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Today research on creep and shrinkage of concrete is diversified to such a degree that specialists working in different areas sometimes find it difficult to understand one-another. Materials scientists are mainly interested in processes on a microstructural level but they do not necessarily understand the relevance of time dependent deformation in structural design. On the other hand engineers who apply simplified model laws in non-elastic structural analysis are not always in the position to judge the limitations implied in their approach. It is generally realized that further development can be stimulated by a more effective exchange of results and ideas among the different groups involved. In an attempt to bridge this obvious gap in September 1980 there was a Conference organized at Swiss Federal Institute of Technology in Lausanne. The papers presented at this meeting covered the wide range starting with microstructural aspects and mechanisms and including constitutive modelling and structural creep analysis. These contributions together with summaries of two panel discussions are being published in this volume. All serious of the meeting have been introduced by invited lectures. These papers will be published in a special volume "Creep and Moisture Effects in Concrete". This special volume is rather to be a general survey of the different areas covered while the present conference proceedings provide a unique selection of research papers. Nowadays time-dependent deformation of concrete can be taken into consideration realistically by computerized structural analysis.
Prediction Of Creep Shrinkage And Temperature Effects In Concrete Structures
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Author : American Concrete Institute
language : en
Publisher:
Release Date : 2009
Prediction Of Creep Shrinkage And Temperature Effects In Concrete Structures written by American Concrete Institute and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Concrete categories.
Prediction Of Creep Shrinkage And Temperature Effects In Concrete Structures
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Author : ACI Committee 209--Creep and Shrinkage
language : en
Publisher:
Release Date : 1992
Prediction Of Creep Shrinkage And Temperature Effects In Concrete Structures written by ACI Committee 209--Creep and Shrinkage and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Concrete categories.
Prediction Of Creep Shrinkage And Temperature Effects In Concrete Structures
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Author :
language : en
Publisher:
Release Date : 1997
Prediction Of Creep Shrinkage And Temperature Effects In Concrete Structures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with categories.
Creep And Shrinkage In Concrete Structures
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Author : Z. P. Bažant
language : en
Publisher: John Wiley & Sons
Release Date : 1982
Creep And Shrinkage In Concrete Structures written by Z. P. Bažant and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Technology & Engineering categories.
Time Effects In Concrete Structures
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Author : R. I. Gilbert
language : en
Publisher: Elsevier Publishing Company
Release Date : 1988
Time Effects In Concrete Structures written by R. I. Gilbert and has been published by Elsevier Publishing Company this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Technology & Engineering categories.
The inability of designers of concrete structures to recognize and quantify the non-linear effects of cracking, creep and shrinkage is a common cause of serviceability failure. Such failures include excessive deflection, camber and/or shortening of members and excessive cracking which may cause aesthetic or durability problems. This book provides practising engineers with practical and usable techniques for predicting the non-linear effects of creep and shrinkage on the in-service behaviour of concrete structures. Both cracked and uncracked reinforced, prestressed, and composite members subjected to sustained loads or sustained deformations are considered. Analytical procedures are developed for the calculation of instantaneous and time-dependent stresses and deformations on cross-sections in both simple and continuous members. Numerous self-contained worked examples which clearly illustrate the analytical procedures are included. A wide variety of practical situations is considered. Listings of microcomputer programs for a number of the analyses are also presented.
Prediction Of Creep And Temperature Effects In Concrete Structures
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Author :
language : en
Publisher:
Release Date : 1992
Prediction Of Creep And Temperature Effects In Concrete Structures written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with categories.
The Effect Of Temperature On Creep Of Concrete
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Author : H. G. Geymayer
language : en
Publisher:
Release Date : 1970
The Effect Of Temperature On Creep Of Concrete written by H. G. Geymayer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Concrete categories.
A review of the literature on the effect of elevated temperatures on the time-dependent volume change due to load (creep) of concrete reveals incomplete and conflicting evidence. Some workers have found a 'creep maximum' at a particular temperature range; others have not encountered this phenomenon. Among those who have found it, there is lack of agreement as to what the range is. All available data have been collected, reduced to comparable form, and analyzed. The analysis has been reviewed in the light of the several theories of the mechanism of concrete creep. It is concluded that the new results on temperature effects on creep do not resolve the conflicts among the various creep theories, but they tend to support the seepage theory more than any other. Many factors affecting creep are found to be influential at elevated temperatures in analogous fashion to their influence at room temperature. These factors include time under load, applied stress, maturity of concrete, and moisture content of concrete. The effect of temperature, at least up to 50 C, is to increase creep by a factor of two or three at 50 C. (Author).