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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.:

US 10800701 B1

PDFFull Text
Date of Patent:
Oct. 13, 2020

Filed:

Mar. 31, 2017

Rapid-hardening cement composition

Applicant:

Mitsubishi Materials Corporation, Chiyoda-ku, JP;

Inventors:

Kiyoshi Kamitani, Chichibu-gun, JP;

Keiji Saitou, Chichibu-gun, JP;

Kenji Tokunaga, Tokyo, JP;

Hideo Tawara, Tokyo, JP;

Assignee:

MITSUBISHI MATERIALS CORPORATION, Chiyoda-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Anthony J Green

Int. Cl.
CPC ...
C04B 14/30 (2006.01); C04B 40/00 (2006.01); C04B 28/06 (2006.01); C04B 28/16 (2006.01); C04B 14/28 (2006.01); C04B 16/06 (2006.01); C04B 18/08 (2006.01); C04B 18/10 (2006.01); C04B 14/02 (2006.01); C04B 14/46 (2006.01); C04B 20/00 (2006.01); C04B 28/04 (2006.01); C04B 111/70 (2006.01); C04B 103/44 (2006.01);
U.S. Cl.
CPC ...
C04B 14/303 (2013.01); C04B 14/022 (2013.01); C04B 14/28 (2013.01); C04B 14/4631 (2013.01); C04B 16/06 (2013.01); C04B 18/08 (2013.01); C04B 18/10 (2013.01); C04B 20/008 (2013.01); C04B 28/04 (2013.01); C04B 28/06 (2013.01); C04B 28/16 (2013.01); C04B 40/0042 (2013.01); C04B 2103/44 (2013.01); C04B 2111/70 (2013.01); C04B 2201/05 (2013.01); Y02W 30/92 (2015.05); Y02W 30/94 (2015.05);
Abstract

This rapid-hardening cement composition includes: a rapid-hardening admixture; and cement in an amount of 100 parts by mass to 2,000 parts by mass with respect to 100 parts by mass of the rapid-hardening admixture, wherein the rapid-hardening admixture is a composition that contains: calcium aluminate; inorganic sulfate in an amount of 50 parts by mass to 200 parts by mass with respect to 100 parts by mass of the calcium aluminate; and a setting modifier in an amount of 0.1 parts by mass to 10 parts by mass with respect to 100 parts by mass of the calcium aluminate, and an average particle diameter of the calcium aluminate is in a range of 8 μm to 100 μm, and an average particle diameter of the setting modifier is in a range of 5 μm or less.

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