| 摘要 |
A mold form provided, on suitable portions of panels which constitute the mold form, with a plurality of outwardly extending projections having small holes at the free end portions thereof, the portions of these projections which are joined to the panels being curved around the centers located on the outer side of the mold form. When ready-mix concrete is placed in this mold form, a part thereof enters the interior of the projections, and the air and excess water are discharged completely to the outside from the small holes made in these projections, so that the sufficiently high strength of the resultant concrete structure can be secured. This mold form enables a concrete surface to be finished beautifully. It can be formed to a simple construction and reused satisfactorily. |
