It is an object of the present invention, which has been made in view of the above-mentioned state of the art, to provide a cement admixture capable of improving the water-reducing ability of cement compositions and the like and enhancing the strength and durability of hardened products produced therefrom and further capable of adjusting the viscosity of such compositions so as to facilitate the works at the sites of handling the same, as well as a method of producing such cement additive.
A cement admixture comprising a polycarboxylic acid polymer and a nitrogen atom-containing compound having non-amide bond, wherein the mass ratio (A/B) between the mass (A) of said polycarboxylic acid polymer and the mass (B) of said nitrogen atom-containing compound having non-amide bond satisfies the relation 200>(A/B)>1.
鉴于上述技术现状,本发明的目的是提供一种
水泥外加剂,该
水泥外加剂能够提高
水 泥组合物和类似物的减
水能力,并增强由其生产的硬化产品的强度和耐久性,还能调节这 类组合物的粘度,以便于现场处理这些组合物,本发明还提供了生产这种
水泥外加剂的方 法。
一种
水泥外加剂,由聚
羧酸聚合物和具有非酰胺键的含氮原子化合物组成,其中所述聚
羧酸聚合物的质量(A)与所述具有非酰胺键的含氮原子化合物的质量(B)之间的质量比(A/B)满足 200>(A/B)>1 的关系。