PREPARATION METHOD OF HIGH-EARLY-STRENGTH CONCRETE AND CURED BODY

摘要

PROBLEM TO BE SOLVED: To provide a preparation method of a high-early-strength concrete promoting aggregation and curing at early time by stopping flowability quickly when filling of parts is completed sequentially while maintaining flowability during filling operation and a cured body thereof for overcoming problems that there is need for constructing a frame having a sufficient framework in a concrete construction for filling and installing concrete excellent in flowability and cost and labor are required for the operation and there is need for shortening construction period of the concrete construction.;SOLUTION: There is provided a preparation method of a high-early-strength concrete, including mixing a concrete of a base blend and then adding, to the concrete slurry, a predetermined amount of an admixture composition containing, at a specific ratio, constitutional components containing A component:one or more selected from specific polyacrylamide and specific polyacrylic acid alkali metal salt, B component: silicate alkali metal salt, C component: specific polyalkylene glycol monoalkyl ether, D component: sodium phosphate, and E component: water.;SELECTED DRAWING: None;COPYRIGHT: (C)2017,JPO&INPIT