Title:
METHOD FOR PRODUCING MAIN REINFORCEMENT-CONTAINING HOLLOW PRECAST CONCRETE MEMBER
Document Type and Number:
Japanese Patent JP2022089083
Kind Code:
A
Abstract:
To provide a main reinforcement-containing hollow precast concrete member having satisfactory workability.SOLUTION: An inner form is composed of plural balloon bodies 10. The balloon bodies 10 are arranged every region separated by reinforcements 7 viewed from an extension direction of a main reinforcement 5. An operator injects air to the balloon bodies 10 till unevenness is generated on surfaces of the balloon bodies 10 partially adhered to reinforcements 2 and the balloon bodies 10 are adhered each other. By the adhesion of the expanded balloon bodies 10 each other, the infiltration of concreted into a gap between the respective balloon bodies 10 is prevented, and by the unevenness of the balloon bodies 10, a shear connector is formed.SELECTED DRAWING: Figure 2
Inventors:
KAWAI KEITA
HASUO KOICHI
HASUO KOICHI
Application Number:
JP2020201320A
Publication Date:
June 15, 2022
Filing Date:
December 03, 2020
Export Citation:
Assignee:
SUMITOMO MITSUI CONSTRUCTION CO LTD
International Classes:
B28B7/16; B28B7/10; B28B23/02; E04C5/02; E04C5/18
Attorney, Agent or Firm:
Patent Business Corporation Oshima Patent Office
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