Download or read book Behavior of Prestressed Concrete Subjected to Low Temperatures and Cyclic Loading written by Dale Eric Berner and published by . This book was released on 1984 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behaviour of CFRP Prestressed Concrete Beams Under Sustained Loading and High Cycle Fatigue at Low Temperature written by Mohammad Reza Saiedi and published by . This book was released on 2009 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fibre-reinforced polymers (FRPs) are becoming increasingly accepted in structural engineering applications. In particular, Carbon-FRP (CFRP) tendons are proving to be promising as prestressing reinforcement for concrete structures. While several studies have been conducted on CFRP-prestressed concrete beams, very little attention has been given to their long-term behaviour at low temperatures. This thesis investigates the behaviour of CFRP prestressed concrete beams in two studies: (a) under sustained loading at low temperature, and (b) under high-cycle fatigue at low temperature. Seven 13 year old, 4.4 m long precast concrete T beams were tested, of which five were prestressed to various levels with CFRP tendons and two with conventional steel strands. In the first study, three beams were exposed to -27 °C while being subjected to a sustained load of 25% of their flexural capacity for 163 days. The sustained load produced cracking in two beams with lower prestress levels. Results were compared to those obtained from three similar beams subjected to the same sustained load at room temperature. Deflection increase under sustained load at low temperature was generally small and similar to that at room temperature. Prestressing strain had a direct relationship with temperature in the CFRP prestressed beams. After being subjected to sustained loading, all seven beams were tested in the second study. Only three of the five CFRP prestressed beams were subjected to cyclic loading, one at -28 °C and two at room temperature, while only one of the two steel prestressed beams was subjected to cyclic loading, at -28 °C. Cyclic loading consisted of 3 million cycles at a frequency of 0.85 Hz. The load range represented 21 to 42% of the flexural capacity of the CFRP prestressed beams and 30 to 60% of that of the steel-prestressed beam. Monotonic tests were run every 1 million cycles. Finally, all seven beams were monotonically loaded to failure. All CFRP prestressed beams survived the 3 million cycles but the steel prestressed beam failed after 185,000 cycles. However, the CFRP concrete bond was weakened by high prestress levels, cyclic loading, and low temperature during sustained loading and loading to failure. This resulted in bond failure at loads ranging from 69 to 91% of the full flexural capacity. Stiffness and camber gradually decreased during cyclic loading.
Download or read book Static and Cyclic Behavior of Structural Lightweight Concrete at Cryogenic Temperatures written by D. Berner and published by . This book was released on 1985 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanical behavior of a high-strength, lightweight concrete made with expanded-shale aggregate was determined in the temperature range from 23°C (73°F) to -196°C (-320°F). High-strength, lightweight concrete is of particular interest for use in offshore cryogenic containment structures in which the concrete may be subjected to low temperatures and high-intensity cyclic loading simulating 20-year stormwave action. Values of compressive strength, tensile strength, and elastic modulus were determined, with moisture content and cyclic loading serving as key parameters. An evaluation was also made of the behavior of embedded strain gages at cryogenic temperatures. The results indicate that the lightweight concrete performed favorably under the test conditions, with the mechanical properties generally increasing at low temperatures with greater gains for higher moisture contents. Cyclic loading induced relatively minor fatigue damage in the concrete and should not affect the structural performance of an offshore containment structure.
Download or read book Cryogenic behaviour of materials for prestressed concrete written by FIB – International Federation for Structural Concrete and published by FIB - International Federation for Structural Concrete. This book was released on 1982-05-01 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1986 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ocean Space Utilization 85 written by C.C. Mei and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean development has conventionally been targeted at the exploitation of natural resources, however this trend is gradually changing: Ocean space has itself come to be regarded as a precious resource. Since problems associated with energy, food supply, and population will become even more crucial over the coming years, ocean space is being reevaluated as a means for providing solutions in many of these areas. The future prosperity of mankind will to a large measure be dependent on the manner in which the resources of the oceans are utilized. To develop ocean space effectively, international cooperation is essential since a global perspective is paramount. It is on this basis of cooperation and communication that the present symposium was organized, bringing together experts from all over the world to report current findings in ocean development and to consider areas of future research. The material covered here deals with all aspects of these areas which are now of such of vital importance.
Download or read book Short and long Term Behaviour of Plain and Prestressed Concrete Subjected to Temperature Gradients and Thermal Cycling written by G. A. Labib and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temperature Effects on Concrete written by Tarun R. Naik and published by ASTM International. This book was released on 1985 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal Prestressed Concrete Institute written by Prestressed Concrete Institute and published by . This book was released on 1981 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Camber and Deflection Behavior of Prestressed Concrete Subjected to Repeated Loads written by Calvin T. Hamada and published by . This book was released on 1973 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Behavior of a High strength Concrete Subjected to Cyclic Overload written by Wei-Bong Hsiang and published by . This book was released on 1986 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physical Properties and Behaviour of High Performance Concrete at High Temperature written by Pierre Pimienta and published by Springer. This book was released on 2018-09-11 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the work done by the RILEM Technical Committee 227-HPB (Physical properties and behaviour of High-Performance Concrete at high temperature). It contains the latest research results on the behaviour of high-performance concretes at high temperature. The book presents the state of the art of experimental data on High-Performance concretes and it collects and synthesizes useful data about concrete behaviour at high temperatures. The book is divided into independent chapters dealing with degradation reactions in concrete exposed to high temperatures; mass transport properties; thermal properties; and mechanical properties. The results presented especially target a group of users composed by universities and testing laboratories, building material companies and industries, material scientists and experts, building and infrastructure authorities, designers and civil engineers.
Download or read book Marine Concrete written by A.L. Marshall and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concrete is commonly regarded as a mundane, prosaic material whilst the sea is perceived as a fearsome environment, endowed with mystery. Mystery stems from lack of knowledge, and to that extent both concrete and sea have something in common-we fall a long way short of knowing enough about them. Fortunately we have learned enough from our investigations and experiences to be able to set the limits within which we should operate. It is important for the engineer to seek to quantify the effects of the environment on materials and structures so that these can be made safe and adequately durable for their intended economic life. This is especially true for marine structures. Thus the primary purpose of this book is to provide a useful synthesis of the behaviour of concrete and concrete structures in the marine environment. An outline of the content of the book is provided in the latter part of the first chapter and so will not be anticipated here. The chief aim throughout, however, is to work as far as possible within a context of the appropriate governing physical phenomena, giving due consideration to the mathematical relationships between them. Moreover, without intending to be a design manual, an introduction is given to the sources of information which designers are likely to use, as well as to structural achievements. It is hoped that there should emerge an implicit integration between structure and constituent materials and the surrounding environment.
Download or read book Journal of the American Concrete Institute written by American Concrete Institute and published by . This book was released on 1986 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experiment and Calculation of Reinforced Concrete at Elevated Temperatures written by Zhenhai Guo and published by Elsevier. This book was released on 2011-06-15 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction Part 1 Mechanical Behavior of Materials at Elevated Temperatures Chapter 1 Strength of Concrete at Elevated Temperatures Chapter 2 Deformation of Concrete at Elevated Temperature Chapter 3 Temperature-Stress Paths and Coupling Constitutive Relation of Concrete Chapter 4 Mechanical Behavior and Constitutive Relation of Reinforcement at Elevated Temperatures Part 2 Temperature Field on Cross-Section of Structural Member Chapter 5 Temperature-Time Curve of Fire and Equation of Heat Conduction Chapter 6 Theoretical Analysis of Temperature Field Chapter 7 Calculation Charts for Temperature Field on Cross-Section Part 3 Mechanical Behavior of Members and Structures at Elevated Temperatures Chapter 8 Behavior of Flexural Members At Elevated Temperature Chapter 9 Behavior of Compressive Member At Elevated Temperatures Chapter 10 Behavior of Statically Indeterminate Structures At Elevated Temperatures Part 4 Theoretical Analysis and Practical Calculation Method Chapter 11 General Mechanical Characteristics of Inhomogeneous Section Chapter 12 Finite Element Analysis of Loading History for Structures Chapter 13 Practical Calculation Methods for Ultimate Strength of Member and Structure at Elevated Temperature Chapter 14 Fire Resistance Analysis and Damage Grade Evaluation of Structure.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1974 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
