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Patent Searching and Data


Title:
CEMENT ADMIXTURE AND CEMENT COMPOSITION
Document Type and Number:
Japanese Patent JP2009208982
Kind Code:
A
Abstract:

To provide a cement admixture capable of improving a strength and durability of a hardened matter by improving a water reduction property of a cement composition or the like, giving viscosity easy to work in a site where the cement composition or the like is handled and sufficiently exhibiting a strength expressing property of a hardened cement composition, especially early strength expressing properety and to provide the cement composition containing such a cement admixture.

In the cement admixture containing two kinds polymers of a polycarboxylic acid based copolymer (A) and a polycarboxylic acid based copolymer (B) in a specific mass ratio, the polycarboxylic acid based copolymer (A) has a repeating unit originated from an unsaturated polyalkylene glycol based monomer having a specific hydrophobic part and a repeating unit originated from an unsaturated polycarboxylic acid based monomer and has a weight average molecular weight within a specific range.


Inventors:
KAWAKAMI HIROKATSU
Application Number:
JP2008052044A
Publication Date:
September 17, 2009
Filing Date:
March 03, 2008
Export Citation:
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Assignee:
NIPPON CATALYTIC CHEM IND
International Classes:
C04B24/26; C04B28/02; C08L31/06
Attorney, Agent or Firm:
Yasuo Yasutomi
Takanori Tamai