| 摘要 |
<p>A process for forming a concrete wall having a projecting portion 71 such as those formed at a door, a window or the like includes installing two spaced apart opposite form boards 1, 2 which confine a cavity for receiving concrete, and one of which has a groove 32 for forming the projecting portion 71 and wall segments which confine the groove, lining the wall segments with a cushion member 10 which is made of a flexible and compressible material, pouring concrete into the cavity, and moving simultaneously the form board from the formed concrete in a direction similar to the direction of the projecting portion by means of a hydraulic drive mechanism 5.</p> |
