Powdery polycarboxylic-acid cement dispersant and dispersant composition containing the dispersant

摘要

present invention the polymer backbone by polyamide polyamine containing a powdery polycarboxylic acid-based cement dispersant, the sensitivity (water amount reduction), the persistence of the slump flow (Slump flow), at the same time having the effect of being able to improve the strength development of the concrete, can be prevented effectively blocking this, also, the solubility to a slurry (slurry), as well as excel and provides uniform inorganic powder that can be mixed with a dispersant and the dispersant composition containing the dispersant. ; the present invention is a solution of copolymer containing polyamide polyamine in the polymer backbone or at the same time composed of a dry powdered cement dispersant obtained by the dispersion of powder, the powder is formed using a spherical shape, average particle diameter and the particle diameter of 30~300 50~350 occupies more than 70% by weight for the particle size distribution is characterized by having a.