| abstract |
PROBLEM TO BE SOLVED: To reduce the amount of water to be added to a cement composition, to have high fluidity and excellent workability, and to have a suitable air entrainment property by a sufficient foam-suppressing action. To provide a cement additive which is low in cost and excellent in economical efficiency and a cement composition using the same. SOLUTION: This is a cement additive containing a polymer (X) as a main component, wherein the polymer (X) comprises a repeating unit (A), a repeating unit (B), a repeating unit (C), and a repeating unit. Having units (D), S, T And E1 is not 0, n is 110 or more, and the weight average molecular weight (Mw) of the polymer (X) is 10,000 The above is a cement additive. |