Author: Ronald F. Gibson | Size: 15.88 MB | Format:PDF | Quality:Unspecified | Publisher: Mc Graw-Hill | Year: 1994 | pages: 446 | ISBN: O-07-023451-5
Principles of Composite Material Mechanics, Third Edition presents a unique blend of classical and contemporary mechanics of composites technologies. While continuing to cover classical methods, this edition also includes frequent references to current state-of-the-art composites technology and research findings.
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The DFI Journal is a peer-reviewed publication of high-quality papers related to the broad area of deep foundations engineering and construction. Papers are welcome on topics of interest to the geo-professional community related to all systems designed and constructed for the support of heavy structures and excavations. The publication is a milestone in our ongoing effort to be the information resource for design and construction of foundations and excavations, and helps position DFI and its members as authorities in the industry. The content includes practice-oriented papers, opinion papers, forums, technical notes, discussions and book reviews.
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Concrete is one of the most important building materials of our times. Concrete products and precast elements that are prefabricated on an industrial scale fully utilise the performance potential of concrete whilst offering major benefits with regard to the construction process. The flexible use of prefabricated concrete products results in a continuously increasing diversity with respect to:
– fresh concrete mix designs and properties,
– external geometry and design,
– surface finishes in terms of colour and design and
– characteristics of the finished product (quality).
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Structural behaviour of residual soils of the continually wet Highlands of Papua New Guinea
Author: K. B. Wallace
Source: Géotechnique, Volume 23, Issue 2, 01 June 1973 , pages 203 –218
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(1) This European Standard applies to concrete for structures cast in situ, precast structures, and structural precast products for buildings and civil engineering structures.
(2) The concrete under this European Standard can be:
normal-weight, heavy-weight and light-weight;
mixed on site, ready-mixed or produced in a plant for precast concrete products; compacted or self-compacting to retain no appreciable amount of entrapped air other than entrained air.
(3) This standard specifies requirements for:
the constituents of concrete;
the properties of fresh and hardened concrete and their verification;
the limitations for concrete composition;
the specification of concrete;
the delivery of fresh concrete;
the production control procedures;
the conformity criteria and evaluation of conformity.
(4) Other European Standards for specific products e.g. precast products or for processes within the field of the scope of this standard may require or permit deviations.
(5) Additional or different requirements may be given for specific applications in other European Standards, for example:
concrete to be used in roads and other trafficked areas (e.g. concrete pavements according to EN 13877–1);
special technologies (e.g. sprayed concrete according to EN 14487).
(6) Supplementing requirements or different testing procedures may be specified for specific types of concrete and applications, for example:
concrete for massive structures (e.g. dams);
dry mixed concrete;
concrete with a Dmax of 4 mm or less (mortar);
self-compacting concretes (SCC) containing lightweight or heavy-weight aggregates or fibres;
concrete with open structure (e. g. pervious concrete for drainage).
(7) This standard does not apply to:
aerated concrete;
foamed concrete;
concrete with density less than 800 kg/m3;
refractory concrete.
(8) This standard does not cover health and safety requirements for the protection of workers during production and delivery of concrete.
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Precast reinforced and prestressed concrete frames provide a high strength, stable, durable and robust solution for any multi-storey structure, and are widely regarded as a high quality, economic and architecturally versatile technology for the construction of multi-storey buildings. The resulting buildings satisfy a wide range of commercial and industrial needs. Precast concrete buildings behave in a different way to those where the concrete is cast in-situ, with the components subject to different forces and movements. These factors are explored in detail in the second edition of Multi-Storey Precast Concrete Framed Structures, providing a detailed understanding of the procedures involved in precast structural design. This new edition has been fully updated to reflect recent developments, and includes many structural calculations based on EUROCODE standards. These are shown in parallel with similar calculations based on British Standards to ensure the designer is fully aware of the differences required in designing to EUROCODE standards.
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Vibro-compaction and vibro-stone columns are the two dynamic methods of soil improvement most commonly used worldwide. These methods have been developed over seventy years and are now in a position of unrivalled importance amongst modern foundation measures. The first works on granular soil by densification, and the second is used to displace and reinforce fine grained and cohesive soils by introducing inert material.
This practical guide for professional geotechnical engineers outlines the development of vibratory deep compaction, describes the equipment used, sets out the methods and techniques and provides state of the art design principles and quality control procedures. It also identifies the practical limitations of the methods. Case studies from South East Asia and the Middle East are used to illustrate the methods and to demonstrate how they apply in real world conditions. The book concludes with some variations of the basic methods, evaluates the economic and environmental benefits of the methods and gives contractual guidance.
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