Discardable formwork for columns

摘要

A formwork is structured from a tubular body or core made of a plurality of parts, attached to each other by an adhesive through their connecting edges. The tubular core is internally coated with a sheet made of plastic, or rigid plates made of wood plasticized on the internal side or made of rigid plastic, attached to each other on their inner side with the help of an adhesive constituting an impervious barrier. Externally the formwork has a reticulated support having a fiber glass mesh rolled up helicoidally on the tubular core and fixed to the core by an adhesive in such a way that the mesh ensures the proper mechanical rigidity of the formwork. Optionally, a self-adhesive sealing band can be placed on the enveloping mesh as a decorative element and as a formwork advertising support.