| 摘要 |
PROBLEM TO BE SOLVED: To provide a form for placing concrete, which eliminates time and effort for setting a heating body, and contributes to reduction of power consumption. SOLUTION: The form 3 for placing concrete has cylindrical reinforcing ribs 35 of a closed cross section, formed along an inner surface of an external wall 321 abutting on the concrete C, at a plurality of locations. Then hot air generators 42 are provided for the form, and hot air feeding pipes are connected to one-side cylinder openings of the reinforcing ribs 35, respectively, via a blast pipe 43 and a header pipe 44 which are extended from each hot air generator 42. COPYRIGHT: (C)2007,JPO&INPIT
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