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Title:
CONSTRUCTION METHOD OF COLUMNAR STRUCTURE MADE OF PRESSURIZED AND DEHYDRATED READY MIXED CONCRETE
Document Type and Number:
Japanese Patent JP2004218267
Kind Code:
A
Abstract:

To construct a pier capable of reducing the construction period by pressurizing and dehydrating ready mixed concrete immediately after placing it and early developing the early stage strength and early demolding, causing neither excess water on the surface of concrete nor laitance due to bleeding, and curtailing the construction joint work time.

A water permeable form 3 is installed in a position where ready mixed concrete is placed and the placed concrete is pressurized and dehydrated to construct a columnar structure. A water permeable sheet 1 permeating water in ready mixed concrete and a water permeable form 3 that a reticular body 2 such as an expanded panel or the like supporting the sheet is assembled by reinforcing members are used. A fabric or the like having a function permeating water in the ready mixed concrete is used for the water permeable sheet 1. When pressurizing the ready mixed concrete placed in the water permeable sheet 1, as water in the ready mixed concrete is discharged, solid self-supportable concrete having nearly 0 cm in slump.


Inventors:
HARADA KOJI
IDA TAKAHISA
IWASAKI NORIO
NISHIKAWA KAZUYOSHI
MIURA NOBUTAKA
MAKITA TAKAYUKI
TAKAMATSU NOBUYUKI
NINOMIYA KOJI
OKU TOSHIAKI
Application Number:
JP2003006576A
Publication Date:
August 05, 2004
Filing Date:
January 15, 2003
Export Citation:
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Assignee:
ZENITAKA CORP
SUMITOMO MITSUI CONSTR CO LTD
PENTA OCEAN CONSTRUCTION
FUDO CONSTRUCTION CO
JAPAN DEV & CONSTRUCTION
TOKYU KENSETSU KK
ASAHI KASEI CONSTR MAT CO LTD
International Classes:
E02D23/08; E01D19/02; E01D19/14; E01D21/00; E04G9/02; E04G21/02; (IPC1-7): E01D19/02; E01D21/00; E02D23/08; E04G9/02; E04G21/02
Domestic Patent References:
JPS4625345B1
JPH03275865A1991-12-06
JPH0492052A1992-03-25
JP2000144740A2000-05-26
JPH1088795A1998-04-07
JPS6448965A1989-02-23
JPH11131436A1999-05-18
JPS594755A1984-01-11
Attorney, Agent or Firm:
Hirotsugu Yoshioka
Tatsuyuki Unuma
Sakuo Yamaguchi
Yuichi Kasai
Masaharu Yokoyama



 
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