| abstract |
(57) Abstract: Cement (C), fly ash (F), slump loss inhibitor (AD) and water reducing agent (H) P), Mn = 1000 having units of formulas (1) and (2) in 3/2 to 2/3 as a slump loss inhibitor and having a hydrocarbon group substituted with a sulfonate group at the end ~ (15000) water-soluble vinyl copolymer ((AD) / (C + F) × 100) 0.01 to 1.0 and AD / H Concrete composition blended so that P = 0.1-1.0. Embedded image [Effect] Even when a large amount of fly ash is used, it has excellent slump retention and good strength. |