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およびその製造方法

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およびその製造方法

Document Type and Number:

Japanese Patent JP4796424

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 excellent in neutralization resistance and salt damage resistance at the inside, at least contains: one or more kinds selected from portland cement, blast furnace cement, fly ash cement and slaked lime; steel making slag; and blast furnace slag fine powder, and in which the value of äportland cement (kg/m3)+blast furnace cement (kg/m3)×0.6+fly ash cement (kg/m3)×0.85+slaked lime (kg/m3)} is ≥55 kg/m3, and further, the surface of the reinforcing rod is subjected to surface treatment. As the surface treatment for the reinforcing rod, preferably, iron phosphate treatment, zinc phosphate treatment, zinc calcium phosphate treatment, magnesium phosphate treatment, calcium phosphate treatment or galvanizing is adopted.

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Inventors:

Fishing Noro
Hisahiro Matsunaga
Kyono Kazuaki

Application Number:

JP2006097638A

Publication Date:

October 19, 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; C04B28/08; C04B28/12; C22C38/00; C22C38/04; F27D15/00; C04B111/22; C04B111/24; C04B111/26

Domestic Patent References:

JP2005298267A
JP2004292295A
JP2001270746A
JP2001322842A
JP2001261421A
JP2004299922A
JP2004301531A
JP2002047052A
JP10152364A
JP2233539A
JP11158656A
JP9125259A
JP2004124204A
JP2002059076A
JP2003165751A
JP2004051426A
JP2004149333A
JP2003306359A
JP2004051425A

Attorney, Agent or Firm:

Hiroaki Sakai

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