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At the FIP Symposiu m on Concrete Sea Structures, which was held on 28-29 September 1 972 in Tbilisi, Georgia, the participants unanimously agreed that c oncrete was bound to play a major if not the leading part in the rapidly developing field of offshore construction. It was also agreed that the discovery of oil and gas in the North Sea had produced an immediate and exciting challenge in the demand for the construction of fixed structures in marine environments which, in terms of hostile natura! forces, would far exceed anything tackled by engineers to date. It was therefore decided to set up an FIP Commission on Concrete Sea Structures under the chairmanship of Mr Fr,óde Hansen which would report to the FIP Seventh Congress in New York in May 1974 . It seemed natura! to divide the tasks of the Commission into three working groups: Design, Materials, and Construction Methods. It soon became apparent that the demands for structures subjected to deep and hostile waters were so great and so pressing that it was decided to accelerate the work of the Design and Materials Working Groups, and to produce the first edition of these Recommendations before the New York Congres s . The Chairmen for the two Working Groups were Mr Kurt Eriksson and Dr Odd Gjprv respectively. The publication of these Recommendations has been made possible by the li vely interest of these two groups and by the valuable assistance of Mr D. Palmer and Mr B. Spratt of the C ement and Concrete Association and Mr M. D. Hazen of Sir Robert McAlpine & Sons Ltd. The Recommendations have been published with the approval of the FIP Administrati ve Council. The work of the Construction Methods Working Group has not been included in this edition since practical construction experience in this most challenging field is still quite limited. The successful completion of the Ekofisk Storage Tank has added tremendously to obtaining practical experience, and this, with the fact that two larger concrete offshore platforms will soon be under c onstruction, offers the promise that future editions will be augmented by some very valuable practical construction experience.
Marine Concrete Structures: Design, Durability and Performance comprehensively examines structures located in, under, or in close proximity to the sea. A major emphasis of the book is on the long-term performance of marine concrete structures that not only represent major infrastructure investment and provision, but are also required to operate with minimal maintenance. Chapters review the design, specification, construction, and operation of marine concrete structures, and examine their performance and durability in the marine environment. A number of case studies of significant marine concrete structures from around the world are included which help to reinforce the principles outlined in earlier chapters and provide useful background to these types of structures. The result is a thorough and up-to-date reference source that engineers, researchers, and postgraduate students in this field will find invaluable. - Covers, in detail, the design, specification, construction, and operation of marine concrete structures - Examines the properties and performance of concrete in the marine environment - Provides case studies on significant marine concrete structures and durability-based design from around the world
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.