| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a simple device which discharges bleeding water exuding from uncured concrete placed in a formwork. <P>SOLUTION: A discharge opening 11a for discharging bleeding water is drilled in a formwork face material 11. A guide member 30 projecting outside of the formwork face material 11 is fastened to the periphery of the discharge opening 11a. A hollow cylindrical member 20 is supported inside the guide member 30, so as to be movable inward and outward relative to the inside of the formwork face material 11. The cylindrical member 20 has a region to be projected in a concrete placing area, of which peripheral surface is provided with slit openings 21 passing through the hollow part. The cylindrical member 20 has a closed tip face 20a and an open rear end 20b. With the cylindrical member 20 projected in the concrete placing area, the bleeding water flowing from the openings 21 is discharged from the rear end 20b. After concrete is cast up to the level higher than the level of the discharge opening 11a, the tip face 20a of the cylindrical member 20 is retracted to the discharge opening 11a of the formwork face material 11 for closing the discharge opening 11a. <P>COPYRIGHT: (C)2013,JPO&INPIT |
