Title:
鉄筋コンクリート
Document Type and Number:
Japanese Patent JP4545239
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain reinforced concrete reduced in neutralization depth and rich in durability and thereby effectively utilize coal ash such as fly ash discharged from coal electric power stations by massively compounding the coal ash in a specific ratio as a component of the reinforced concrete. SOLUTION: This reinforced concrete comprises reinforcing steel rods and concrete as constituting elements. The concrete comprises at least a cement, an aggregate, coal ash and water. The cement has a density of 200-350 kg/m<3> , and the coal ash has a density of 100-400 kg/m<3> . The concrete preferably comprises a cement, a fine aggregate, a coarse aggregate, coal ash and water. The fine aggregate/coarse aggregate weight ratio is preferably 0.35-0.70. The coal ash/cement weight ratio is preferably 0.25-2.0. The further addition of a water-reducing agent is preferable. A high early strength Portland cement is most preferable.
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Inventors:
Toshiya Kano
Noriaki Sone
Akihiro Oyanaka
Katsutoshi Ichikawa
Noriaki Sone
Akihiro Oyanaka
Katsutoshi Ichikawa
Application Number:
JP7732597A
Publication Date:
September 15, 2010
Filing Date:
March 28, 1997
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
C04B28/02; C04B32/02; C04B18/08; C04B18/10; C04B111/22
Domestic Patent References:
| JP92848A | ||||
| JP834652A |