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Title: High-Strength Concrete for Wall foundation using Ternary Blended Cement with Intermixture of Blast-Furnace Slag and Fly Ash

Author(s): S. Kashima, N. furuya, and Y. Yamaoka

Publication: Symposium Paper

Volume: 132


Appears on pages(s): 1451-1470

Keywords: adiabatic conditions; blast furnace slag; blended cements; fly ash; high-strength concretes; low-heat cements; subsurface structures; temperature; underwater construction; Construction

DOI: 10.14359/1236

Date: 5/1/1992

The Akashi Kaikyo Bridge will be the world's longest suspension bridge, with a center span of 1990 m. The anchorage of this bridge at the Honshu side has its bearing layer at a depth of 60 m, and will be constructed as a concrete foundation surrounded by an underground wall at a depth of 75 m. This underground wall is composed of 46 slender reinforced concrete panels having a cross section of 2.2 x 8.5 m (preceding panels) and 2.2 x 3.2 m (following panels). Concrete is to be placed into slurry through tremies. It must have a high fluidity, low segregation, high strength, and low-heat generation. Therefore, a high-strength low-heat- generating concrete using a ternary-blended cement containing large amounts of blast furnace slag, fly ash, and superplasticizer was used. The results of tests on basic properties such as workability, strength, and heat generation of high-strength concrete using ternary-blended cement with a large amount of blast furnace slag and fly ash; test results of tests performed on experimental models; and results of actual work are described.


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