Title:
CEMENT COMPOSITION, REPAIR METHOD AND CONCRETE STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2023/248970
Kind Code:
A1
Abstract:
The present invention provides: a cement composition which has high fluidity retention effect, low kneading resistance, fast setting properties and higher initial crack resistance; a repair method; and a concrete structure. A cement composition according to the present invention contains a cement which contains, as chemical components, MnO, TiO2 and P2O5; the total content of MnO, TiO2 and P2O5 in the cement is 0.05% by mass to 2.0% by mass; and the mass ratio ((MnO + TiO2)/P2O5) of the total content of MnO and TiO2 to the content of P2O5 in the cement is 1.5 to 15.
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Inventors:
SASAKI TAKASHI (JP)
Application Number:
PCT/JP2023/022540
Publication Date:
December 28, 2023
Filing Date:
June 19, 2023
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C04B28/02; C04B18/14; C04B22/06; C04B24/24; C04B24/26; C04B24/40; E04G23/02; C04B111/72
Domestic Patent References:
| WO2020194671A1 | 2020-10-01 |
Foreign References:
| JP2015127283A | 2015-07-09 | |||
| JPH05345652A | 1993-12-27 | |||
| JP2020164409A | 2020-10-08 | |||
| JP2021160954A | 2021-10-11 | |||
| JP2010077702A | 2010-04-08 |
Other References:
ANONYMOUS: "Blast Furnace Slag Pulverized Spirits Catalog", NIPPON STEEL CEMENT CO., LTD., 1 April 2019 (2019-04-01), XP093119917, Retrieved from the Internet [retrieved on 20240116]
SHIMOSAKA KENICHI: " Research on additives to clinker and physical properties of cement", DDOCTORAL DISSERTATION, SAITAMA UNIVERSITY GRADUATE SCHOOL OF SCIENCE AND ENGINEERING, 1 September 2005 (2005-09-01), Saitama University Graduate School of Science and Engineering, XP093119920, [retrieved on 20240116]
SHIRAKI RYOJI, TAKASHI IKEDA, KAZUSUKE KOBAYASHI, MASAFUMI MAEDA: "Chemical composition of ordinary portland cement - - Analysis by ICP", PRODUCTION RESEARCH, vol. 40, no. 2, 1 December 1988 (1988-12-01), pages 36 - 37, XP093119928
SHIMOSAKA KENICHI: " Research on additives to clinker and physical properties of cement", DDOCTORAL DISSERTATION, SAITAMA UNIVERSITY GRADUATE SCHOOL OF SCIENCE AND ENGINEERING, 1 September 2005 (2005-09-01), Saitama University Graduate School of Science and Engineering, XP093119920, [retrieved on 20240116]
SHIRAKI RYOJI, TAKASHI IKEDA, KAZUSUKE KOBAYASHI, MASAFUMI MAEDA: "Chemical composition of ordinary portland cement - - Analysis by ICP", PRODUCTION RESEARCH, vol. 40, no. 2, 1 December 1988 (1988-12-01), pages 36 - 37, XP093119928
Attorney, Agent or Firm:
TAGUCHI, Masahiro et al. (JP)
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