Concrete form and methods of manufacture thereof

Details Concrete form and methods of manufacture thereof Concrete form and methods of manufacture thereof

E - Fixed Constructions

04

G

72/105

E04G 13/02 (2006.01)

Patent

CA 1287748

ABSTRACT A lightweight, concrete form having an inner elongate cylindrical member with an internal opening having a cross section to provide the desired shape for a concrete column and a layer of film wrapped about the inner member and in tension to place the inner member in compression. In forming a nonround concrete column, the inner member is formed of a plastic foam and the tensioned, enclosing film may be either a stretch or a shrink film. The stretch film is wrapped about the inner member while under tension. The shrink film is loosely wrapped about the inner member and, thereafter, heat is applied to shrink the film. In both instances, the ends of the film are overlapped for self-adherence.

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