METHOD FOR PLACING CONCRETE

Japanese Patent JP3872739

B2

PROBLEM TO BE SOLVED: To provide a method for placing concrete that is suited for placing a large amount of concrete in an area for placement that is of such a large scale that a difference in height exceeds 100 m.
SOLUTION: At a force-feed pipe unit 9 for placement, located below a transport path 4, a force-feed pipe with a branch pipe is replaced with a replacement force-feed pipe. After concrete is placed through the branch pipe, a force-feed pipe with the branch pipe is replaced with a replacement force-feed pipe at a force-feed pipe unit 9 for placement that is located above the transport path 4 and concrete is placed through the branch pipe. Thus, in a clearance S between the interior wall surface of a vertical shaft 1 and a hydraulic pressure steel pipe 2, concrete can be placed from an area therebelow. Thus, even if the vertical shaft 1 is of such a large scale that its depth exceeds 100 m and a large amount of concrete needs to be placed in the clearance S, concrete can be surely and efficiently placed over the whole range of the clearance S to enhance the efficiency of construction work.

JP2002155626	CONCRETE CURING SHEET
JPH09234726	CEMENT MILK STIRRING AND PRESSURE FEEDING APPARATUS

Hisato Tanaka
Ikuro Jinuchi
Nobuda Atsuhiko
Masahiro Manabe

JP2002263156A

January 24, 2007

September 09, 2002

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Kashima Construction Co., Ltd.
Toyo Construction Co., Ltd.
Kajima Mechatronics Engineering Co., Ltd.

E04G21/02; E04G21/04; (IPC1-7): E04G21/04

JP9088344A
JP50122433U
JP55119848U
JP9137606A

Yoshiki Hasegawa
Shiro Terasaki
Tomoya Kurokawa
Hikaru Suzuki

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