JP2021091558 (A)
Cement admixture
(22) 09.12.2019
(43) 17.06.2021
(57) To provide a cement admixture excellent in slump retention and workability. SOLUTION: A cement admixture of this invention includes a copolymer A including a constituent unit derived from the monomer (I) expressed by the general formula (1) and a constituent unit derived from the monomer (II) expressed by the general formula (2) and satisfies the condition (A) that a not-yet-surface covered ratio NA (30) is 65% or higher.Furthermore, the cement admixture includes the copolymer A including a constituent unit derived from the monomer (III) expressed by the general formula (3). Selected Drawing: None
(71) Flowric Co Ltd +
