The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2011
Filed:
May. 25, 2006
Applicant:
Takahiro Sato, Muroran, JP;
Inventor:
Takahiro Sato, Muroran, JP;
Assignee:
Nittetsu Cement Co., Ltd., Hokkaido, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 17/24 (2006.01); C09K 17/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
A grouting material which contains a fine particle material having a Blaine specific surface area of 5000 cm/g or more, containing 30 to 60% by mass of cement clinker, 40 to 70 % by mass of and blast-furnace slag and 0.5 to 3 parts by mass of gypsum in terms of SObased on 100 parts by mass of the total amount of cement clinker and blast-furnace slag, and further contains (i) 4 to 8 parts by mass of calcium-aluminate-based rapid-hardening admixture, (ii) 0.05 to 0.2 parts by mass of setting retarder and (iii) 0.5 to 1.7 parts by mass of high-performance water-reducing agent, based on 100 parts by mass of the fine particle material.