CEMENT SETTING ACCELERATOR

Title:

CEMENT SETTING ACCELERATOR

Document Type and Number:

WIPO Patent Application WO/2005/037730

Kind Code:

A1

Abstract:

Disclosed is a cement setting accelerator which is composed of calcium hydroxide particles having an average particle diameter of not more than 3 μm. Also disclosed is a cement composition which contains 0.05-10 parts by weight of such a cement setting accelerator per 100 parts by weight of cement. A wet milled product of a calcium hydroxide or a fine precipitate obtained through reaction between a calcium salt and an alkali hydroxide can be used as the calcium hydroxide particles. This cement setting accelerator exhibits high setting acceleration effect and has no adverse affect on the quality of the set cement, in particular durability of the set cement.

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Inventors:

KATO HIROYOSHI (JP)
HIRANAKA SHINGO (JP)
TAGA GENJI (JP)

Application Number:

PCT/JP2004/015539

Publication Date:

April 28, 2005

Filing Date:

October 14, 2004

Export Citation:

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Assignee:

TOKUYAMA CORP (JP)
KATO HIROYOSHI (JP)
HIRANAKA SHINGO (JP)
TAGA GENJI (JP)

International Classes:

C04B22/06; C04B28/02; C04B103/12; (IPC1-7): C04B22/06; C04B28/02

Foreign References:

JP2003277111A	2003-10-02
JP2003246657A	2003-09-02
JP2001233661A	2001-08-28

Other References: