Title:
RETARDER FOR CEMENT COAGULATION
Document Type and Number:
Japanese Patent JPS5460327
Kind Code:
A
Abstract:
A cement retarder is provided which comprises 5 to 20% by weight, based on the weight of said retarder, of gluconic acid and/or tartaric acid and/or a water soluble salt thereof, 30 to 10% by weight, based on the weight of said retarder, of citric acid and/or an alkali salt thereof, and 50 to 85% by weight, based on the weight of said retarder, of an alkali carbonate. A rapid hardening cement is also provided which contains the above cement retarder.
Inventors:
YAMAGISHI HIROSHI
SHIRASAWA MINORU
SAKAMAKI SHIYOUZOU
NAKAGAWA KOUJI
SHIRASAWA MINORU
SAKAMAKI SHIYOUZOU
NAKAGAWA KOUJI
Application Number:
JP12633477A
Publication Date:
May 15, 1979
Filing Date:
October 20, 1977
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KK
International Classes:
C04B22/00; C04B24/06; C04B28/02; C04B28/04; C04B28/06; (IPC1-7): C04B13/24
Domestic Patent References:
| JPS52121035A | 1977-10-12 | |||
| JPS4866618A | 1973-09-12 |