BLOCK FOR CONSTRUCTION UNDERWATER STRUCTURE, HOISTING APPARATUS FOR THE BLOCK, AND METHOD FOR HOISTING THE BLOCK

摘要

PURPOSE: To produce cured bodies, such as precast concrete armor units and rising gushing flow generating structures having sufficiently high strength by using fine powder of coal ashes, blast furnace slag, dry sludge, etc., which are waste and volcanic ashes, etc. CONSTITUTION: Hydraulic materials contg. cement and the dry fine powder are kneaded and sea water and/or water are added thereto within a range of optimum water content ratio + (0 to 5)}% to be sufficiently kneaded. The mixture is placed in forms and these forms are vibrated to compact the placed hydraulic materials until the electric resistance value of the materials falls.