高強度遠心力成形用コンクリート組成物及びその製造方法

Title:

高強度遠心力成形用コンクリート組成物及びその製造方法

Document Type and Number:

Japanese Patent JP5493259

Kind Code:

B2

Abstract:

To provide a concrete composition for centrifugal force molding exerting high strength in regard to centrifugally molded concrete secondary products such as a pile, a pole or a Hume pipe and the like.

In the high-strength concrete composition for centrifugal force molding containing ordinary portland cement, a high-strength additive, a dispersant, an aggregate and water, the containing ratio of gypsum hemihydrate in gypsum is 20-95 mass%, the containing rate of a gap phase is 17-23 mass% and the unit quantity of cement is 510-680 kg/m3in the ordinary portland cement, the high-strength additive contains anhydrous gypsum and noncrystalline silica wherein the mass ratio of anhydrous gypsum/noncrystalline silica is 15/85-90/10 and the dispersant is a naphthalene-based dispersant.

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Inventors:

Nobuyuki Matsushima
Shinji Mochiaga

Application Number:

JP2007244664A

Publication Date:

May 14, 2014

Filing Date:

September 21, 2007

Export Citation:

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Assignee:

Ube Industries,Ltd.

International Classes:

C04B28/04; B28B1/34; B28B21/80; C04B7/02; C04B22/06; C04B22/14; C04B24/22; C04B111/56

Domestic Patent References:

JP2007076955A
JP2005060202A
JP11302045A
JP2002003249A

Other References:

セメントの常識,日本,社団法人セメント協会,1998年11月,第7頁
無機マテリアル学会,セメント・セッコウ・石灰ハンドブック,1995年,1版,177~178頁
米澤敏男、外3名,シリカフュームの物性が高強度コンクリートの性質に及ぼす影響,コンクリート工学年次論文集,日本,コンクリート工学協会,1991年,vol.13、No.1,第291-296頁

Attorney, Agent or Firm:

Yoshiki Hasegawa
Yoshiki Kuroki
Yasunori Ishizaka
Hiroto Kido
Masato Ikeda

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