Global Patent Index - EP 0866778 A4

EP 0866778 A4 2000-01-12 - METHOD OF MAKING BLENDED CEMENT COMPOSITONS

Title (en)

METHOD OF MAKING BLENDED CEMENT COMPOSITONS

Title (de)

VERFAHREN ZUR HERSTELLUNG VON MISCHZEMENT ZUSAMMENSETZUNGEN

Title (fr)

PROCEDE DE FABRICATION DE COMPOSITIONS DE CIMENTS DE MELANGE

Publication

EP 0866778 A4 (EN)

Application

EP 96944741 A

Priority

  • US 9619145 W
  • US 854595 P
  • US 75543396 A

Abstract (en)

[origin: WO9721637A1] A method of preparing a blended cement composition is provided. The method comprises intergrinding a composition comprised of a major amount by weight of portland cement clinker, a minor amount by weight of a pozzolanic material and a grinding aid in an amount of from about 0.1 % to about 5 % based on the total weight of portland cement clinker and pozzolanic material, said grinding aid being comprised of a naphthalenesulfonate formaldehyde condensate.

IPC 1-7 (main, further and additional classification)

C04B 7/13; C04B 7/14; C04B 7/19; C04B 7/52; C04B 14/02; C04B 14/36; C04B 18/04

IPC 8 full level (invention and additional information)

C04B 7/13 (2006.01); C04B 7/52 (2006.01); C04B 24/22 (2006.01); C04B 28/04 (2006.01)

CPC (invention and additional information)

C04B 7/52 (2013.01); C04B 7/13 (2013.01); C04B 24/226 (2013.01); C04B 28/04 (2013.01); Y02P 40/20 (2015.11)

Combination set (CPC)

  1. C04B 28/04 + C04B 14/14 + C04B 24/226
  2. C04B 24/226 + C04B 2103/52

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family

WO 9721637 A1 19970619; CA 2240291 A1 19970619; CA 2240291 C 20041026; EP 0866778 A1 19980930; EP 0866778 A4 20000112