Early-age cracking is a challenge for the concrete industry. Materials selection, environmental conditions, and field practices all have considerable influence on the propensity for early-age cracking to occur. This document focuses on thermal- and moisture-related deformations; both are materials-related and contribute to early-age cracking. The document provides detailed reviews on the causes of deformation and cracking, test methods for assessing shrinkage and thermal deformation properties, and mitigation strategies for reducing early-age cracking.
TABLE OF CONTENTS
Chapter 1—Introduction and scope
1.1—Introduction
1.2—Scope
Chapter 2—Notation and definitions
2.1—Notation
2.2—Definitions
Chapter 3—Causes of early-age deformation and cracking
3.1—Thermal deformation
3.2—Autogenous shrinkage
3.3—Drying shrinkage
3.4—Creep and stress relaxation from deformation restraint
3.5—Mitigation of shrinkage
Chapter 4—Test methods and assessment
4.1—Introduction
4.2—Shrinkage measurements
4.3—Ring test
4.4—Rigid cracking frames
4.5—Coefficient of thermal expansion (αT) measurement
4.6—Analysis tools assessing stresses and cracking
Chapter 5—Shrinkage control
5.1—Introduction
5.2—Expansive additives
5.3—Shrinkage-reducing admixtures
5.4—Internal curing
Chapter 6—References
6.1—Referenced standards and reports
6.2—Cited references
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Geotechnical Earthquake Engineering, Second Edition
Author: Robert W Day | Size: 19.5 MB | Format:PDF | Quality:Original preprint | Publisher: McGrawhill | Year: 2012 | pages: 692 | ISBN: 9780071792387
The latest methods for designing seismically sound structures
Fully updated for the 2012 International Building Code, Geotechnical Earthquake Engineering Handbook, Second Edition discusses basic earthquake principles, common earthquake effects, and typical structural damage caused by seismic shaking.
Earthquake computations for conditions commonly encountered by design engineers, such as liquefaction, settlement, bearing capacity, and slope stability, are included. Site improvement methods that can be used to mitigate the effects of earthquakes on structures are also described in this practical, comprehensive guide.
Coverage includes: Basic earthquake principles Common earthquake effects Earthquake structural damage Site investigation for geotechnical earthquake engineering Liquefaction Earthquake-induced settlement Bearing capacity analyses for earthquakes Slope stability analyses for earthquakes Retaining wall analyses for earthquakes Other geotechnical earthquake engineering analyses Grading and other soil improvement methods Foundation alternatives to mitigate earthquake effects Earthquake provisions in building codes
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Geotechnical instrumentation is used for installation, monitoring and assessment on any sizeable project, particularly in urban areas, and is used for recording, controlled remedial work, and safety.
This unique and up-to-date book deals with the conceptual philosophy behind the use of instruments, and then systematically covers their practical use. It is divided into displacement dominated systems and stress recording systems. The limitations are discussed and the theoretical background for data assessment and presentation are covered in some detail, with some relevant background material in theoretical soil mechanics. Relevant advanced electronic techniques such as laser scanning in surveying and fibre-optics are also included and communication and data recovery systems are discussed.
This book is written for senior designers, consulting engineers, and major contractors who need a major introduction to the general purpose, availability, and analysis of field instruments before details of their own project can be progressed, and it serves as a textbook to any specialist geotechnical MSc or professional seminar course in which instrumentation forms a major part.
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Use download manager programs to download from libgen.
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Posted by: ssobhan - 08-04-2014, 04:26 AM - Forum: Archive
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Article/eBook Full Name: Innovations in Structural Engineering and Construction, Two Volume Set: Proceedings of the 4th International Conference on Structural and Construction Engineering, Melbourne, Australia, 26-28 September 2007
Author(s): Mike Xie, Indubhushan Patnaikuni
Publish Date: 2007
ISBN: 9780415457552
Published By: CRC Press
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Posted by: mremremre - 08-04-2014, 12:36 AM - Forum: Archive
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I require a link for the following document. I appreciate your time.
Article/eBook Full Name: STP982 Mechanics of Fatigue Crack Closure
Author(s): Newman JC, Elber W
Edition: STP982
Publish Date: 1988
Published By: ASTM
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Author: F. I. Niordson | Size: 5 MB | Format:PDF | Quality:Unspecified | Publisher: North Holland | Year: (September 1, 1985) | pages: 385 | ISBN: 0444568417
This account of the theory of plates and shells is written primarily as a textbook for graduate students in mechanical and civil engineering. The unified treatment of shells of arbitrary shape is accomplished by tensor analysis. This useful tool is introduced in the first chapter, and no knowledge of advanced mathematical methods is required. The general theory developed in the first eight chapters is applied in the remaining part to thin elastic plates and shells with special emphasis on engineering methods and engineering applications. A number of detailed examples illustrate the theory.
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Author: Alfred Leick | Size: 3.4 MB | Format:PDF | Quality:Original preprint | Publisher: John Wiley & Sons | Year: 2004 | pages: 454 | ISBN: 9780471059301
The revised and updated authoritative volume on GPS use in surveying
Comprehensive and thorough in its coverage, GPS Satellite Surveying, Third Edition is the updated edition of Alfred Leick’s classic introduction to the field. Written to help specialists get the most out of GPS surveying techniques and the resulting measurements, this standard industry reference provides the latest fundamental and cutting-edge material for working with GPS today.
A unique volume in the field, this Third Edition offers an unrivaled presentation of procedures that apply to the Russian GLONASS, the forthcoming European GALILEO, and U.S. GPS satellite systems. New coverage addresses emerging precise-point positioning technology, as well as the most current information on:
Geodetic reference systems
GPS modernization
Least-squares adjustments
Pseudoranges and carrier phases
The troposphere and ionosphere
The LAMBDA technique
The ellipsoidal and conformal mapping models
GPS Satellite Surveying, Third Edition is a dependable, up-to-date reference for surveyors, civil engineers, transportation engineers, geologists, geographers, technicians, and students.
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Seismic behavior of box girder cable-stayed bridges considering large deformations
Author: Halabian, Amir M.; Keshtegar, Behrouz; Hashemolhosseini, S. Hamid | Size: 440 KB | Format:PDF | Quality:Unspecified | Publisher: NISEE e-Library | Year: 2007 | pages: 9
The main purpose of this study is to consider large deformations of the deck in response of long-span cable-stayed bridges during seismic excitations taking into account both kinds of geometric and material non-linearities. A 3D finite element model was developed. Large deformation beam elements with very low bending stiffness were used to model main supporting cables. The orthotropic deck was represented in the model with large deformation shell elements. Non-linear time history analyses using explicit approach were performed for a practical cable-stayed bridge subjected to different ground excitations considering ground motion spatial variation. In a parametric study the effects of the spatial variation in ground motions and cables’ post-tensioned forces on seismic response of the structure were examined. Results of time history analyses indicated that neglecting large deformations could lead one to overestimate the stiffness of the deck in some areas.
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Vulnerability, Uncertainty, and Risk: Analysis, Modeling, and Management
Author: Bilal M. Ayyub | Size: 40.1 MB | Format:PDF | Quality:Unspecified | Publisher: American Society of Civil Engineers | Year: 2011 | pages: 1004 | ISBN: 9780784411704
Proceedings of the International Conference on Vulnerability and Risk Analysis and Management (ICVRAM 2011) and the International Symposium on Uncertainty Modeling and Analysis (ISUMA 2011), held in Hyattsville, Maryland, April 11-13, 2011. Sponsored by the Council on Disaster Risk Management of ASCE. This collection contains 120 peer-reviewed papers that build upon recent significant advances in the modeling, analysis, and management of risk, vulnerability, and uncertainty. Yet, even as advancements are made in technology, new hazards appear. These papers demonstrate the transformation of intellectual discussions into robust frameworks for handling emerging vulnerabilities and risks and providing analytical bases to prepare for national and international disasters
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