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Autogenous Shrinkage Of Concrete

Author: Ei-ichi Tazawa
Publisher: CRC Press
ISBN: 1482272121
Size: 27.62 MB
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This book forms the proceedings of a workshop held in Hiroshima in June 1998 and derive from the work of a Technical Committee of the Japan Concrete Institute. Topics include test and prediction methods, the science of autogenous shrinkage, strain and stress, and consequent design concerns.

Creep Shrinkage And Durability Mechanics Of Concrete And Concrete Structures Two Volume Set

Author: Tada-aki Tanabe
Publisher: CRC Press
ISBN: 9780203882955
Size: 69.47 MB
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CREEP, SHRINKAGE AND DURABILITY MECHANICS OF CONCRETE AND CONCRETE STRUCTURES contains the keynote lectures, technical reports and contributed papers presented at the Eighth International Conference on Creep, Shrinkage and Durability of Concrete and Concrete Structures (CONCREEP8, Ise-shima, Japan, 30 September - 2 October 2008). The topics covered include: - Micro structural characterization and micro-mechanics of creep and shrinkage - Multiphase and multi-scale approaches to creep, shrinkage and durability - Creep and shrinkage of early age concrete - Interaction between creep and fracture in cement based materials - Structural mechanics of creep and shrinkage - Creep, shrinkage, and durability of new concrete products - Shrinkage reducing methods and admixtures - Deterioration kinetics of concrete structures in aggressive environments and its modeling - Durability mechanics of concrete and concrete structures - Testing methods of durability related characteristics - Design, Standard recommendations, and Codes CREEP, SHRINKAGE AND DURABILITY MECHANICS OF CONCRETE AND CONCRETE STRUCTURES will be of interest to academics, engineers and professionals involved in concrete and concrete structures.

Creep Of High Strength Concrete And Autogenous Shrinkage Of Cement Paste

Author: Maryam Fakhari
Size: 64.94 MB
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The main types of volume change in concrete that affect the performance of structures by causing stresses, crack, and deflection are creep and shrinkage. In this study, a concrete creep test was conducted on different concrete mixes to investigate age of loading, compressive strength, and the long-term effect on creep of concrete. Five different code models, namely the ACI 209R-92, B3, CEB 90, CEB MC90-99, and GL2000, were utilized in this study. The study results showed that creep increased over time; however, the rate of increase diminished after 250 days. Furthermore, increasing age of loading and compressive strength lowered concrete creep. We also introduced a new device for measuring autogenous shrinkage of cement paste to investigate mixes with different water-to-cement ratios containing fly ash or silica fume. We concluded that as the water-to-cement ratio decreased, the autogenous shrinkage increased. Also adding fly ash and silica fume decreased autogenous shrinkage.

Concrete And Masonry Movements

Author: Jeffrey Brooks
Publisher: Butterworth-Heinemann
ISBN: 0128017678
Size: 23.71 MB
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Widely used in the construction of bridges, dams and pavements, concrete and masonry are two of the world’s most utilized construction materials. However, many engineers lack a proper understanding of the methods for predicting and mitigating their movements within a structure. Concrete and Masonry Movements provides practical methods for predicting and preventing movement in concrete and masonry, saving time and money in retrofitting and repair cost. With this book in hand, engineers will discover new prediction models for masonry such as: irreversible moisture expansion of clay bricks, elasticity, creep and shrinkage. In addition, the book provides up-to-date information on the codes of practice. Provides mathematical modelling tools for predicting movement in masonry Up-to-date knowledge of codes of practice methods Clearly explains the factors influencing all types of concrete and masonry movement Fully worked out examples and set problems are included at the end of each chapter

Measuring Monitoring And Modeling Concrete Properties

Author: Maria S. Konsta-Gdoutos
Publisher: Springer Science & Business Media
ISBN: 1402051042
Size: 50.12 MB
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This state-of-the-art volume covers the latest and future trends in measuring, monitoring and modeling the properties of cement based materials including computational and experimental micro-mechanical modeling of high-performance cementitious composites (HPFRCs), mechanical behavior and fracture of conventional and new cement based composites, advanced methods for crack detection in concrete, realistic assessment and modeling for mechanical behavior of early age concrete, autogenous shrinkage and microcracking in heterogeneous systems, quantitative image analysis for microstructural characterization of concrete, development of innovative cementitious materials, composition of concretes with special rheological properties, new concepts for the processing of repair and rehabilitation measures of concrete structures and historic building materials, bond characteristics and structural behavior of fiber reinforced plastics and hybrid fabrics, and modeling of textile reinforced concrete. This book contains 94 papers and presents the latest research work of renowned experts in the area of cement and concrete sciences.

Innovations And Developments In Concrete Materials And Construction

Author: Ravindra K. Dhir
Publisher: Thomas Telford
ISBN: 9780727731791
Size: 43.92 MB
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Concrete is a global material that underwrites commercial wellbeing and social development. There is no substitute that can be used on the same engineering scale and its sustainability, expolitation and further development are imperatives to creating and maintaing a healthy economy and environment worldwide. The pressure for change and improvement of performance is relentless and necessary. Concrete must keep evolving to satisfy the increasing demands of all its users. These six volumes are the proceedings of the international Challenges of Concrete Construction Congress held in September 2002 with contributions from many of the world's leading authorities in this field.

Mechanics And Physics Of Creep Shrinkage And Durability Of Concrete

Author: Franz-Josef Ulm
Publisher: Amer Society of Civil Engineers
ISBN: 9780784413111
Size: 79.95 MB
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Proceedings of the Ninth International Conference on Creep, Shrinkage, and Durability Mechanics (CONCREEP-9), held in Cambridge, Massachusetts, September 2225, 2013. Sponsored by IA-CONCREEP; the Engineering Mechanics Institute of ASCE; American Concrete Institute; the Concrete Sustainability Hub at Massachusetts Institute of Technology; Groupement de Recherche International Multi-scale Materials Under the Nanoscope of Centre National de la Recherche Scientifique (CNRS). This collection contains 59 invited and peer-reviewed papers on the deformation under load of concrete and concrete structures. These papers dissect the physical origin of creep and shrinkage of concrete and propel this knowledge from the scale of a few atoms to full-scale engineering applications. This collection honors Zdenk P. Baant of Northwestern University for his lifetime work at the crossroads of fundamental physics and engineering, particularly his contributions to a modern theory of creep and shrinkage mechanisms and its application in constitutive modeling and engineering design codes.Topics include: molecular and meso-scale simulations and characterization; micromechanics of creep and shrinkage; multiscale creep, shrinkage, fracture and durability properties; and relation of material creep and shrinkage to structural design. Researchers from physics and engineering disciplines working on the next generation of science-enabled engineering solutions, along with scientists doing related work with soft matter, glass, and computational materials, will find that these papers present the state-of-the-art in concrete creep, shrinkage, and durability mechanics.