| 摘要 |
The invention is for a permanently installed formwork unit for reinforced concrete construction projects, consisting of two parallel, vertical, plastic, hardened foam panels, an external panel (1) and an internal panel (2), affixed securely to one another by means of vertical cross-pieces (3). The invention is characterised by the facts that its external panels (1) and internal panels (2) are of the same height and length, that their upper and lower surfaces include a series of projections (5) or matching depressions (50) used to connect the units to one another and prevent subsequent horizontal displacement, and that the cross-pieces (3), made of a fire-proof material, have rims (30) that are bent at both ends at right angles and that are pressed in to the external panel (1) and internal panel (2).
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