JPS6479050A - Cement dispersant - Google Patents
Cement dispersantInfo
- Publication number
- JPS6479050A JPS6479050A JP23448787A JP23448787A JPS6479050A JP S6479050 A JPS6479050 A JP S6479050A JP 23448787 A JP23448787 A JP 23448787A JP 23448787 A JP23448787 A JP 23448787A JP S6479050 A JPS6479050 A JP S6479050A
- Authority
- JP
- Japan
- Prior art keywords
- obtd
- cement
- blended
- salt
- dispersant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
PURPOSE:To obtain the titled dispersant able to stably and satisfactorily maintain the flowability of cement blending over a long time and increase its workability, by blending salt of specified polystyrenesulfonic acid with olefin- ethylenic unsatd. dicarboxylic anhydride copolymer. CONSTITUTION:The salt of polystyrenesulfonic acid (A) having 5,000-50,000 weight-average mol.wt. and having >=70% proportion of sulfonation, obtd. by directly sulfonating PS with sulfonating agent such as sulfuric acid, sulfur trioxide, oleum and by neutralizing with NaOH, etc., and the copolymer powder (B) having 500-10,000mol.wt. and having 0.1-1,000mu particle diameter, obtd. by copolymerizing olefin (a) such as (alpha-methyl)styrene, isoprene with ethylenic unsatd. dicarboxylic anhydride (b) such as maleic anhydride are blended in weight ratio of A/B=(4/6)-(8/2). The obtd. cement dispersant is blended by 0.01-1.0pts.wt. with 100pts.wt. cement and used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62234487A JP2722387B2 (en) | 1987-09-18 | 1987-09-18 | Cement dispersant |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62234487A JP2722387B2 (en) | 1987-09-18 | 1987-09-18 | Cement dispersant |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6479050A true JPS6479050A (en) | 1989-03-24 |
JP2722387B2 JP2722387B2 (en) | 1998-03-04 |
Family
ID=16971796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62234487A Expired - Lifetime JP2722387B2 (en) | 1987-09-18 | 1987-09-18 | Cement dispersant |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2722387B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113527549A (en) * | 2020-04-17 | 2021-10-22 | 中冶建筑研究总院有限公司 | Concrete pumping regulator and preparation method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51525A (en) * | 1974-06-24 | 1976-01-06 | Mitsubishi Chem Ind | SEMENTO BUNSANZAI |
JPS5641866A (en) * | 1979-09-07 | 1981-04-18 | Denki Kagaku Kogyo Kk | Cement product |
JPS63230547A (en) * | 1987-03-20 | 1988-09-27 | 山陽国策パルプ株式会社 | Cement additive |
-
1987
- 1987-09-18 JP JP62234487A patent/JP2722387B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51525A (en) * | 1974-06-24 | 1976-01-06 | Mitsubishi Chem Ind | SEMENTO BUNSANZAI |
JPS5641866A (en) * | 1979-09-07 | 1981-04-18 | Denki Kagaku Kogyo Kk | Cement product |
JPS63230547A (en) * | 1987-03-20 | 1988-09-27 | 山陽国策パルプ株式会社 | Cement additive |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113527549A (en) * | 2020-04-17 | 2021-10-22 | 中冶建筑研究总院有限公司 | Concrete pumping regulator and preparation method thereof |
CN113527549B (en) * | 2020-04-17 | 2023-09-08 | 中冶建筑研究总院有限公司 | Concrete pumping regulator and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
JP2722387B2 (en) | 1998-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |