Title: Durability of Offshore and Marine Concrete Structures

Author(s): George C. Hoff

Publication: Symposium Paper

Volume: 126

Issue:

Appears on pages(s): 33-64

Keywords: abrasion resistance; alkali-aggregate reactions; carbonation; blast furnace slag; chloride-ion contamination; corrosion; durability; fly ash; freeze-thaw durability; harbor structures; marine atmospheres; marine concretes; portland cement; seawater; sil

DOI: 10.14359/2012

Date: 8/1/1991

Abstract:
The durability of concrete is generally regarded as its ability to resist the effects and influences of the environment while performing its desired function. In an offshore or marine environment, the concrete can be subjected to the influences of wetting and drying, freezing and thawing, abrasion by ice and other debris, chemical attack or mineral depletion by water it is in, salt accumulations, and attack by marine organisms. The paper reviews these dteriorating mechanisms and also reviews the recent trends in strength development for concretes made with modern materials. Chloride ion penetration into concrete information from 33-year old Gulf of Mexico offshore concrete platforms is presented. The advantages of supplementary cementing materials in offshore and marine concretes are discussed along with recommendations for producing durable marine concretes.