耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体

Title:

耐中性化性および耐塩害性に優れた鉄筋を有する水和硬化体

Document Type and Number:

Japanese Patent JP4827581

Kind Code:

B2

Abstract:

To provide a hydrated hardened body having a reinforcing rod excellent in neutralization resistance and salt damage resistance which can made into a structure member having durability over a long period even under environmental conditions that neutralization is apt to progress.

The hydrated hardened body, which has the reinforcing rod at the inside, at least contains: steel making slag; and blast furnace slag fine powder, and in which the mass ratio of CaO/SiO2in the steel making slag is ≥1.5 and/or the CaO concentration is ≥25 mass%. Further, the reinforcing rod is composed of carbon steel having a composition comprising, by mass, 0.001 to 0.025% C, ≤0.60% Si, 0.10 to 3.00% Mn, ≤0.01% S, ≤0.10% Al and 0.0001 to 0.0050% B, and comprising one or more kinds selected from 0.005 to 0.030% P, 0.1 to 6.0% Ni, 0.1 to 1.5% Cu and 0.005 to 0.5% Mo, and the balance Fe with inevitable impurities and having weather resistance.

Inventors:

Fishing Noro
Hisahiro Matsunaga
Kyono Kazuaki

Application Number:

JP2006097640A

Publication Date:

November 30, 2011

Filing Date:

March 31, 2006

Export Citation:

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Assignee:

jfe Steel Corporation
Nippon Steel Corporation
SUMITOMO METAL INDUSTRIES,LTD.
KABUSHIKI KAISHA KOBE SEIKO SHO
Nisshin Steel Co., Ltd.
Japan Iron and Steel Federation

International Classes:

C04B28/04; C04B18/08; C04B18/14; C04B20/00; C04B22/06; C04B28/08; C04B28/12; C22C38/00; C22C38/16; C22C38/58; C04B111/22; C04B111/24; C04B111/26

Domestic Patent References:

JP2004292295A
JP2001270746A
JP2001322842A
JP2002226948A
JP2002363692A
JP7040331A
JP2002059076A
JP2004051425A
JP2003306359A
JP2003165751A
JP2004051426A
JP2004149333A
JP2004299922A
JP2005298267A

Foreign References:

WO1999066093A1

Attorney, Agent or Firm:

Hiroaki Sakai

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