Abstract
Akashi Kaikyo Bridge will be the world's longest suspension bridge with a center span of 1 990 m. The anchorage of this bridge at the Honshu side has its bearing ground at a location 62 m deep and will be constructed on a concrete foundation surrounded by a wall foundation of depth of 75 m. This wall foundation is to be a continuous slender reinforced concrete wall of depth 75 m having cross sections of 2.2 m x 8.5 m (standard panel) and 2.2 m x 3.2 m (joint panel). Concrete is to be placed in slurry using tremies, and along with high fluidity and segregation resistance, high strength and low heat evolution will be required. Therefore, a high strength low heat generating concrete using a ternary blended cement containing large amounts of fly ash and blast-furnace slag, and a superplasticizer was applied. This report describes the results of tests on basic properties the results of tests on quality using models, and the results of placement.
