Title:
高初期強度セメント及び添加剤とその製造方法
Document Type and Number:
Japanese Patent JP4883859
Kind Code:
B2
Abstract:
A method for improving early strength of cements comprising introducing into a cement, preferably during the grinding thereof, (a) at least one water reducer comprising a polyoxyalkylene polymer; (b) a sugar; and (c) an alkali or alkaline earth metal chloride. In further exemplary embodiments, the polyoxyalkylene polymer preferably comprises a comb polymer having a backbone and pendant groups. Optionally, an amine may be included with the additives. Exemplary additives and cements and cementitious compositions, preferably blended cements, and more most preferably pozzolanic cements, comprising the additives are also disclosed.
More Like This:
Inventors:
The Jardine, Leslie A
Chewing, joseph in h
Freitas, Walter M
Chewing, joseph in h
Freitas, Walter M
Application Number:
JP2001503406A
Publication Date:
February 22, 2012
Filing Date:
May 26, 2000
Export Citation:
Assignee:
W. R. Grace and Company-Connecticut
International Classes:
C04B24/32; C04B22/12; C04B24/12; C04B24/26; C04B24/38; C04B28/02
Domestic Patent References:
| JPH0940447A | 1997-02-10 |
Foreign References:
| WO1997019032A1 | 1997-05-29 |
Attorney, Agent or Firm:
Patent business corporation Odashima patent office