Concrete formwork
a formwork and concrete technology, applied in the field of stay-in-place formwork, can solve the problems of unfavorable uneven pillowing in the assembly of formwork, and achieve the effect of promoting uniform pillowing and being readily scalabl
Inactive Publication Date: 2005-01-27
PICCONE FRANCESCO
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Benefits of technology
[0010] As discussed above, undesirable uneven pillowing may arise in a formwork assembly unless the assembly is relatively consistently internally supported by connectors and / or tensioning panels. It is therefore an object of one aspect of the present invention to provide a concrete formwork system (and individual components thereof) that enables the construction of a formwork assembly in which a desired regular spacing of internal supporting members is readily maintained (thereby promoting uniformity in pillowing). It is also an object of the present invention to provide a formwork system (and individual components thereof) that enables the construction of a formwork assembly that is readily scalable, such that desired variations in the thickness or other dimensions of the concrete structure can be accommodated without requiring the production and use of a multiplicity of unique individual components.
Problems solved by technology
As discussed above, undesirable uneven pillowing may arise in a formwork assembly unless the assembly is relatively consistently internally supported by connectors and / or tensioning panels.
Method used
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[0056] The accompanying drawings illustrate formwork components and partial assemblies of such components in plan view. Each of the formwork components shown in the drawings are elongate into the plane of the drawings.
[0057] Referring to FIG. 1, there is illustrated one completed cell 11 (and two adjoining partially completed cells 13) of a typical prior art formwork assembly 10. The assembly 10 includes discrete wall panels 12 that are placed in edge-to-edge relationship to define inner and outer wall segments after being interconnected and held in spaced-apart relationship by means of perforated connector panels 14 via elongate terminal female receptacles 16 and mating male fasteners 18. The female receptacles 16 extend along the longitudinal edges of the wall panels 12 while terminal male fasteners 18 extend substantially along the longitudinal edges of the connector panels 14. (These elements are referred to as “terminal” because they are located at the ends, in plan view, of t...
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A concrete formwork system (and individual components thereof) that enables the construction of a formwork assembly in which a desired regular spacing of internal supporting members is readily maintained, and that enables the construction of a formwork assembly that is readily scalable, such that desired variations in the thickness or other dimensions of the concrete structure can be accommodated without requiring the production and use of a multiplicity of unique individual components.
Description
FIELD OF THE INVENTION [0001] This invention relates to stay-in-place formwork for creating vertical concrete structures. BACKGROUND OF THE INVENTION [0002] The use of stay-in-place modular formwork for creating vertical concrete structures such as walls is well known in the art. Canadian patents Nos. 2,215,939, 2,226,497, and 2,218,600 granted to Piccone provide suitable representative examples of prior-known modular formwork systems of the kind in which discrete inner and outer wall panels are assembled together (to create inner and outer formwork wall surfaces) by means of vertically-extending cross-panels or connector panels, sometimes referred to simply as “connectors”, that span the inner and outer wall panels and connect them together, thereby creating a formwork assembly comprising a series of vertically extending cells into which concrete may be poured and left to harden. The connectors are typically formed with apertures permitting concrete to flow horizontally from one ce...
Claims
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CPCE04B2002/867E04B2/8641
Inventor PICCONE, FRANCESCO
Owner PICCONE FRANCESCO