Production of High-Strength Concrete for the Hibernia Offshore Concrete Platform

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Title: Production of High-Strength Concrete for the Hibernia Offshore Concrete Platform

Author(s): G. C. Hoff, R. Walum, R. Elimov, and H. R. Woodhead

Publication: Special Publication

Volume: 149

Issue:

Appears on pages(s): 37-62

Keywords: blended cements; compressive strength; concrete construction; high-strength concretes; mixing plants; mix proportioning; offshore structures; precast concrete; quality control; Construction

Date: 10/1/1994

Abstract:
The Hibernia offshore concrete platform is being constructed in Newfoundland, Canada, and will be used in hydrocarbon production on the Grand Banks off the east coast of Canada. The 111-m tall concrete structure will contain approximately 165,000 m 3 of high-strength concrete. Construction of the concrete platform through 1993 consisted of a 108-m-diameter base slab that rested on a series of precast and cast-in-place concrete skirts. Specified 28-day compressive strengths (cylinder) for the skirts and base slab were 49 and 69 MPa, respectively. Actual average compressive strengths achieved were73.8 and 81.7 MPa, respectively. The remaining construction will be completed by 1996. The use of two different concrete production systems and their results are described.