| 摘要 |
PURPOSE: To prevent cement sheet like solidified material from sticking to a form by setting the surface roughness of the concrete placing face of a concrete form, made of glass fiber reinforced plastic integrally molded using a metal mold, into a specific range. CONSTITUTION: A concrete form 10 is integrally molded using thermoplastic resin reinforced by a glass fiber mat. In this concrete form 10, reinforcing edge members 2 are erected at four outer edges of the concrete placing face 1 to be the face in contact with placed concrete, and plate-like reinforcing ribs 5 lower than the reinforcing edge members 2 are provided crosswise in plane sections surrounded by the reinforcing edge members 2 and intermediate reinforcing members 4. Separator fitting holes 6 are opened at the center parts of the reinforcing ribs 5. In this concrete form 10, the concrete placing face 1 is to have surface roughness in a range of 400 to 1200. |
