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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Showing 1-5 of 33 Abstracts search results
Document:
SP109
Date:
August 1, 1988
Author(s):
Editor: V.M. Malhotra
Publication:
Symposium Papers
Volume:
109
Abstract:
SP109 The book offers information on a variety of subjects such as: The durability of concrete containing supplementary cementing materials; the durability and corrosion of reinforced concrete subjected to a marine environment; and the repair, design and construction of concrete structures in a marine environment. Whether you are building a new concrete structure in marine environment, or repairing an old one--as an engineer you need the wealth of information contained within the 32 papers presented in this important symposium volume.
DOI:
10.14359/14142
SP109-32
A. R. Al-Rabiah, R. Baggot, and Rasheed Dizzafar
Describes the construction of the 25-km King Fahd Causeway in the Arabian Gulf. On the basis of a review of the performance of marine structures elsewhere in the world, the paper outlines the salient features of concrete deterioration in sea water and discusses the durability requirements for concrete construction in marine environment. Concrete durability considerations for the causeway are outlined in selection of concrete materials and mixes. The durability monitoring of the causeway is being carried out in two phases. Phase I involves continuous visual inspection of the structure, and Phase II includes long term investigations on concrete specimens exposed to submerged, tidal, and atmospheric zones of the Arabian Gulf.
10.14359/3308
SP109-01
P. K. Mehta
From recently reported case histories of concrete deterioration in seawater, the author has taken a fresh look at the conclusion presented on this subject at the last CANMET/ACI Conference on the Performance of Concrete in Marine Environment. It is confirmed again that between seawater and the constituents of hydrated cement paste, harmful chemical reactions such as carbonation, sulfate attack, and magnesium ion attack can be limited to the surface when well known measures to assure low permeability of concrete have been put into practice. From the standpoint of permeability of concrete, the topics discussed in detail include selection of materials and mixture specifications, concreting practice, and control of in-service cracking due to thermal gradients, frost attack, improper loading conditions, fatigue, and corrosion of the embedded steel in concrete. The ACI and FIP Recommended Practice for offshore concrete structures and recent field experience from the North Sea are compared, to highlight the issues that are relevant to long-time durability of concrete. Since high-strength concretes (50 to 70 MPa) containing water-reducing and mineral admixtures are relatively impermeable, in the opinion of the author they offer an excellent solution to the problem of durability of concrete in seawater environment.
10.14359/1899
SP109-31
A. J. Hulshizer and A. Kodal
The ocean-cooling water supply and return system for the Seabrook Nuclear Power Plant is a vital link in the operation of the multibillion dollar facility. The water conveyance system is comprised of three main concrete construction components, each representing different construction techniques and somewhat different corrosion problems and approaches to promoting durability. Concrete intake heads, weighing 227 tons each, were precast off site and utilized nickel-coated reinforcement as a special means to preclude corrosion which otherwise would be accelerated by the presence of a 90-10 copper-nickel anti-fouling cladding. Prefabricated 1.52 and 2.87 m diameter vertical ocean shafts have their steel outer casings protected against corrosion by a mesh reinforced, spin cast, low water-cement ratio, mortar lining. Over 10 km of 5.8 meter diameter tunnels and the vertical land shafts were constructed of conventional cast-in-place, reinforced concrete. The subsea location of the structures and the depth of the tunnels demand that the concrete perform virtually maintenance free for the 40 year design life of the plant. Paper discusses the initial design considerations, construction experiences, and observations from the underwater inspection conducted on the various concrete components, after having been submerged for as much as 7 years at the time of inspection.
10.14359/3570
SP109-19
G. C. Hoff
The mechanism by which ice floes occurring in rivers, lakes, and oceans can damage concrete structures in the water is hypothesized. Various test methods to evaluate the effects of ice abrasion and impact on concrete are reviewed, and selected results using these methods are presented. Several field studies of the effects of ice abrasion on concrete structures are identified.
10.14359/3576
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