ADDITIVE FOR CEMENT, CEMENT ADMIXTURE, CEMENT COMPOSITION, MOLDED ARTICLE, AND STRENGTH IMPROVEMENT METHOD FOR MOLDED ARTICLE
申请人:Nippon Shokubai Co., Ltd.
公开号:EP3954667A1
公开(公告)日:2022-02-16
Provided is an additive for concrete in which viscosity of a cement composition is low and fluidity is high at an initial stage of casting even when the additive is added, and long-term strength of concrete or the like improves by the addition. A cement additive comprising a water-absorbent resin,
wherein the water-absorbent resin is formed by polymerizing a monomer mixture containing no less than 50 mol% of a nonionic non-crosslinkable monomer and no less than 0.1 mol% of a nonionic crosslinkable monomer, and
a content of an anionic monomer in the monomer mixture is no more than 20 mol%.
本发明提供了一种用于混凝土的添加剂,即使添加了该添加剂,在浇注初期水泥成分的粘度也很低,流动性很高,并且通过添加该添加剂,混凝土或类似材料的长期强度得到了提高。一种由吸水性树脂组成的水泥添加剂、
其中,吸水性树脂是通过聚合单体混合物形成的,该单体混合物含有不低于 50 摩尔%的非离子型不可交联单体和不低于 0.1 摩尔%的非离子型可交联单体,以及
单体混合物中阴离子单体的含量不超过 20 摩尔%。