Title:
WATER RETENTION HEAT INSULATION SHEET FOR PLACING CONCRETE
Document Type and Number:
Japanese Patent JP3680680
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a water retention heat insulation sheet for placing concrete capable of improving durability and a strength of the concrete by absorbing excess mixed water when placed with the concrete, supplying a sufficient amount of moisture to the concrete after starting curing and preventing a temperature craze on a surface of the concrete.
SOLUTION: The water retention heat insulation sheet 10 is mounted on an inner wall surface of a form 12 and used. The sheet 10 comprises a plurality of water retaining chambers 14 provided in the sheet 10, a plurality of first communicating passages 16 respectively communicating with the chambers 14 and opened on a surface of the concrete at its placed side, a plurality of back surface grooves 18 provided on the surface of the side mounted at the form 12, and a second communication passage 20 communicating with the chambers 14 through any of the grooves 18.
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Inventors:
Minoru Kanazawa
Application Number:
JP2000048640A
Publication Date:
August 10, 2005
Filing Date:
February 25, 2000
Export Citation:
Assignee:
Obayashi Corporation
International Classes:
E04G9/10; B28B1/14; B28B7/34; B28B7/36; C04B40/00; C04B40/04; (IPC1-7): B28B7/36; B28B1/14; B28B7/34; C04B40/00; E04G9/10
Domestic Patent References:
| JP1295969A | ||||
| JP2132269A | ||||
| JP2210155A |
Attorney, Agent or Firm:
Kensuke Isshiki
Noritaka Harashima
Satoshi Suzuki
Noritaka Harashima
Satoshi Suzuki