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Title:
高靱性コンクリート成形体の製造方法および高靱性コンクリート成形体
Document Type and Number:
Japanese Patent JP4281317
Kind Code:
B2
Abstract:

To provide a high toughness concrete shaped article comprising a cement composite material, which maintains successful workability and has elongation at break of ≥0.5% without causing lowering of strength even in a conventional concrete formulation, and a method of producing the same.

In the high toughness concrete shaped article, crushed chips of a carbon fiber-reinforced plastic, obtained by crushing and classifying a hardened carbon fiber-reinforced plastic are mixed in a range of 3-20 wt.% to the weight of cement. Thereby, the high toughness concrete shaped article exhibits fracture strain of ≥0.5%. The high toughness concrete shaped article is obtained by a production method including precast forming, comprising inpouring a cement composite material, in which CFRP crushed chips each having length of 5-40 mm and an aspect ratio in a range of 2-8 are mixed in an amount of 3-20 wt.% to the weight of cement, into a molding flask, and performing steam curing or natural curing.

COPYRIGHT: (C)2004,JPO


Inventors:
Tomoyuki Shinoda
Akihiko Kitano
Application Number:
JP2002280396A
Publication Date:
June 17, 2009
Filing Date:
September 26, 2002
Export Citation:
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Assignee:
TORAY INDUSTRIES,INC.
International Classes:
C04B28/02; C04B14/38; C04B16/04; C04B18/20; C04B20/00; C04B20/10; C04B111/20
Domestic Patent References:
JP2000256051A