Cryogenic behaviour of materials for prestressed concrete

Cryogenic behaviour of materials for prestressed concrete PDF Author: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
ISBN: 0907862047
Category : Technology & Engineering
Languages : en
Pages : 87

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Cryogenic behaviour of materials for prestressed concrete

Cryogenic behaviour of materials for prestressed concrete PDF Author: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
ISBN: 0907862047
Category : Technology & Engineering
Languages : en
Pages : 87

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Cryogenic Concrete

Cryogenic Concrete PDF Author: Concrete Society
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 360

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Advances in Cryogenic Engineering

Advances in Cryogenic Engineering PDF Author: Quan-Sheng Shu
Publisher: Springer Science & Business Media
ISBN: 9780306464430
Category : Science
Languages : en
Pages : 984

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In recent years, the technology of cryogenic comminution has been widely applied in the field of chemical engineering, food making, medicine production, and particularly in recycling of waste materials. Because of the increasing pollution of waste tires and the shortage of raw rubber resource, the recycling process for waste rubber products has become important and commercially viable. This technology has shown a great number of advantages such as causing no environmental pollution, requiring low energy consumption and producing high quality products. Hence, the normal crusher which was used to reclaim materials, such as waste tires, nylon, plastic and many polymer materials at atmospheric 12 temperature is being replaced by a cryogenic crusher. • In the cryogenic crusher, the property of the milled material is usually very sensitive to temperature change. When a crusher is in operation, it will generate a great deal of heat that causes the material temperature increased. Once the temperature increases over the vitrification temperature, the material property will change and lose the brittle behavior causing the energy consumption to rise sharply. Consequently, the comminution process cannot be continued. Therefore, it is believed that the cryogenic crusher is the most critical component in the cryogenic comminution system. The research on the temperature increase and energy consumption in the cryogenic crusher is not only to reduce the energy consumption of the crasher, but also to reduce the energy consumption of the cryogenic system.

Concrete and Cryogenics

Concrete and Cryogenics PDF Author: Frederick Henry Turner
Publisher: Cement & Concrete Association of Great Britain
ISBN:
Category : Science
Languages : en
Pages : 120

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Second International Conference on Cryogenic Concrete

Second International Conference on Cryogenic Concrete PDF Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 132

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Second International Conference on Cryogenic Concrete

Second International Conference on Cryogenic Concrete PDF Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 252

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Acceptance of post-tensioning systems for cryogenic applications

Acceptance of post-tensioning systems for cryogenic applications PDF Author: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
ISBN: 2883941475
Category : Technology & Engineering
Languages : en
Pages : 116

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Since the Second World War the demand of energy has undergone an exponential growth that has led to a sharp annual increase in the use of natural gas in both, cities and thermal power stations. Nowadays, the strategic relevance of natural gas as a main source of energy is evident with a contribution of more than 20% of the total world consumption. This development in increasing demand of natural gas has led for a need of suitable storage and transportation infrastructure. Various gases, especially hydrocarbons, are preferably stored in liquid form for transportation and storage since the phase transformation from gas to liquid comes with a significant reduction of the volume (e.g. up to 600 times). Gases can be liquefied by raising the pressure or by cooling to their boiling point, which for most gases is below 0°C. This is known as cryogenic storage. The term cryogenic is derived from two Greek words, namely kryos meaning icy-cold and genes which can be translated as shape. These fib recommendations are concerned about post-tensioning systems used in cryogenic tanks and have been formulated on the basis of actual available knowledge with the aim to reflect the current state of the art. Consequently, these recommendations have included a classification of the different cryogenic tanks typologies used in the past and nowadays, the associated different tendon types depending on their exposure to low temperature (e.g. never, only accidentally or during normal tank operation) and the testing regime required for acceptance of the materials and the post-tensioning system according to this document. An international working group comprising more than 20 experts from administrative authorities, universities, laboratories, owners, structural designers, suppliers of prestressing steels and post-tensioning systems suppliers have actively contributed in order to develop these recommendations. This text has been written to cover best construction practices around the world, and to provide material specifications which are considered to be the most advanced available at the time of preparing this text. For ease of use (for Owner, Designer and Post-tensioning System Supplier), the content has been arranged systematically according to the system components into chapters focusing on performance characteristics, requirements and acceptance criteria.

Low-Loss Storage and Handling of Cryogenic Liquids

Low-Loss Storage and Handling of Cryogenic Liquids PDF Author: Thomas D. Bostock
Publisher: Springer
ISBN: 3030106411
Category : Science
Languages : en
Pages : 188

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Book Description
The revised second edition of this practical book reviews the fundamentals of cryogenic liquid behaviour in small and large scale storage systems. The text is based on research findings on the convective and evaporative behaviour of cryogenic fluids, aimed at improving the design, construction and operation of low-loss cryogenic liquid storage systems, with a view to minimising cost and improving operational safety. Since the first edition was published in 2006, the breadth of cryogenic applications and the modelling of cryogenic fluid dynamics (CFD) have expanded in several directions. In this second edition, most chapters have been extended to introduce discussions of these new applications and their safety and energy economy. These include advances in the modelling of CFD required in, for example, the design of miniature cryocoolers and condensers and reboilers, large-scale cryogenic liquid mixture properties and their stability, and the understanding that hazards and safety problems in the public domain increase with the scaling up of cryogenic systems. With helpful summaries at the end of each chapter, the book is an essential reference for anyone working on the design and operation of cryogenic liquid storage and transportation systems.

Innovation in Concrete Structures

Innovation in Concrete Structures PDF Author: Ravindra K. Dhir
Publisher: Thomas Telford
ISBN: 9780727728241
Category : Technology & Engineering
Languages : en
Pages : 698

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Book Description
Concrete will be the key material for Mankind to create the built environment of the next millenium. The requirements of this infrastructure will be both demanding, in terms of technical performance and economy, and yet be greatly varied, from architectural masterpieces to the simplest of utilities. Innovation in Concrete Structures: Design and Construction forms the proceeding of the three day International Conference held during the Congress, Creating with Concrete, 6-10 September 1999, organised by the Concrete Technology University. Topics discussed include civil engineering structures, sub-structures, high-rise structures, deep basements, precast concrete construction and housing.

Assessment of mechanical properties of structural materials for cryogenic application

Assessment of mechanical properties of structural materials for cryogenic application PDF Author: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 100

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