| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of causing such a fault that concrete is easily chipped at an acute angle part because a construction joint face end of precast concrete is left in acute angle shape in the prior art and providing the skeleton side face (the easily chipped acute angle part) with an additionally placed part (a bulged part) to provide a construction joint results in costing much for joint treatment, additionally placed concrete, etc. SOLUTION: This pneumatic form used for a construction joint partition face of concrete includes a plurality of air tubes 1 with bag parts 3 sewn to the air tubes 1 at both ends 8 at least to store joint strips 2 longitudinally. COPYRIGHT: (C)2011,JPO&INPIT
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