| 摘要 |
Mould which is composed of sheets of compressible material to which adhere ribbed PVC profiles with holes in one part and slits in another, small PVC tubes and metal rods, such that the compressible material is the support for the profiles while the profile ribbing ensures excellent grip between the mould and the concrete. The holes in the profile receive the small PVC tubes which improve the grip of the mould, and the slits, arranged in two groups with different interspaces, make it easier to detach the corresponding small thin sheets thus predefined, while the rods are used both to fix the mould temporarily during repairs and to join the moulds together. <IMAGE>
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