Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B7/00—Moulds; Cores; Mandrels
  • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B7/00—Moulds; Cores; Mandrels
  • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
  • B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials of plastic material or rubber
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
  • E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor

Definitions

• the present invention relates to a method and a device for manufacturing concrete posts or the like with a polygonal cross section.
• the present invention aims to remedy this drawback by proposing a method for producing concrete poles with a polygonal cross section which is as simple to implement as the cardboard sheath method used for the manufacture of poles with circular section, which is not more expensive than this one and which uses for the pouring of the concrete and for its hardening not a formwork, but a simple sheath which does not deform.
• the subject of the invention is a method of manufacturing concrete posts or the like with a polygonal cross section, characterized in that one pours and allows the concrete to harden in a monobloc sheath in the form of a straight prism having an internal section identical to that of the post, this sheath being lined externally along all its faces with reinforcement panels in a rigid or semi-rigid material which cover said faces and at least one of which adheres to an external face of the sheath, the sheath and the associated reinforcement panels being kept assembled in mutual contact, in the position of use, by strapping means or the like.
• the invention also relates to a device for manufacturing concrete posts or the like with a polygonal cross section, characterized in that it comprises a monobloc sheath in the form of a straight prism, having an internal section identical to that of the post, reinforcement panels of a rigid or semi-rigid material, capable of being applied against the external faces of the sheath to cover them over their entire surface and one of which adheres to an external face of the sheath, and strapping means ' or the like able to maintain assembled in mutual contact, during use of the device, the sheath and the associated reinforcement panels.
• Another object of the invention is concrete poles or the like with a polygonal cross section manufactured by the process or using the device defined above.
• the sheath used may be made of cardboard, simple or corrugated, optionally treated by any means known per se, of special cardboard comprising flat cardboard cover sheets between which is interposed at least one frame other than a corrugated sheet, or a plastic such as polyethylene, a high density expanded plastic, peeled wood or the like.
• the sheath is in the form of an assembly that can be folded flat by folding around fold lines or upsetting coinciding with the edges of this sheath.
• This could come from a single blank of cardboard, cut out properly and pushed back, both of which free edges parallel to the fold lines will be brought into substantially edge-to-edge contact with their adjacent parts glued against the same reinforcing element.
• These elements could be mutually adjoining two by two to form a planar structure in which zones of reduced thickness define fold lines separating the different elements, the sheath being glued by an external face to one of these elements.
• the assembly thus formed may be delivered flat to the users after folding the sheath.
• two reinforcement panels can adhere to two parallel external faces, in the use position of the sheath, to form a foldable assembly flat, the other reinforcement elements being removable and applied against the corresponding faces of the sheath at the time of use.
• the reinforcing panels glued against two .parallel faces of this sheath can advantageously extend laterally relative to these faces by a distance at least equal to the thickness of the panels, while that the other elements will have a width exactly equal to that of the other faces of the sheath, so as to have their edges in contact with the projecting parts of the adjoining panels, in the position of use, and thus to be clamped between these parts.
• the strapping means may be simple metal or plastic straps.
• two of the reinforcement panels will adhere to two parallel external faces, in the position of use, of a first monobloc sheath in the form of a straight prism while the other reinforcement panels will adhere to internal faces of a second monobloc sheath, constituting the strapping means, the two sheaths equipped with their panels reinforcement cooperating by fitting the first sleeve into the second sleeve.
• additional strapping means such as strips can also be provided.
• foldable flaps can naturally be provided at each end of the sheath to hide the internal structure.
• This device is distinguished from wooden or metal formwork of the prior art by its extreme simplicity, its lightness and its ease of use on construction sites, where it is put in position for use very simply, without resorting to special tools or requiring special handling equipment.
• the sheath can be separated from it by tearing it apart, but that the plastic elements and the strapping means are not altered by the use of the process and can therefore be recovered for further use.
• the Applicant has established that it is possible to produce concrete poles with polygonal section without fear of the slightest creep or the slightest deformation of the sheath, even made of cardboard, by obtaining finished products of a quality at least equal to that of the posts made with the formwork of the prior art.
• Figures 1 and 2 are perspective views of a sheath and pre-assembled plane reinforcing panels of a first embodiment of the device according to the invention, with the sheath shown respectively flat and straightened in position d 'use;
• Figure 3 is a perspective view of this first embodiment in the position of use, with the various elements assembled using strips;
• FIG. 4 is an exploded view of a second embodiment of the device according to the invention
• FIG. 5 represents the elements of FIG. 4 assembled in the position of use using strips
• Figure 6 is a view similar to Figure 5 of a third embodiment of the device according to the invention.
• FIGs 7 and " 8 are perspective views in the assembly position of two members of the embodiment of Figure 6;
• Figures 9 and 10 are perspective views of the members of Figures 7 and 8, folded flat.
• the cardboard sheath 1 into which the concrete is poured has a square cross section and comes from a single blank of cardboard, suitably cut and pushed back, while the reinforcement panels 2 in plastic are also adjoining two by two and form a single plate 3 in which grooves 4 define fold lines.
• the sheath 1 is glued by one of its faces against an element 2 of the plate 3, the glued face having been produced, as seen in FIGS. 2 and 3, bringing the parts edge to edge in the same plane sides of the cardboard blank.
• the cardboard sheath 1 is placed in volume, the corresponding reinforcement panels 2 are folded against its lateral faces to form a closed structure transversely and these elements are assembled in this position using strips 5, of metal or plastic.
• the installation of the device on a site is therefore extremely simple and, as indicated above, after molding the concrete post, the structure 1 can be separated from it by tearing it, while the plate 3 reinforcing elements 2 and the strips 5 can be recovered and reused for a new cycle of operations.
• the cardboard sheath 6 is similar to the structure 1 previously described.
• strips 9 keep the various elements assembled in the position of use.
• This second form of use is as simple as the previous one and as easy to use on construction sites.
• the plastic panels 7 and 8 and the strips 9 can be recovered at the end of a manufacturing cycle to be reused.
• two plastic reinforcement panels 10 are also bonded to two parallel external faces of a cardboard sleeve 11, of square cross section, in which the concrete is poured, but the reinforcement panels 12 coming to apply against the other external faces of the sheath 11 are bonded against the two corresponding internal faces of a second sheath 13, in which the sheath 11 and the panels 12 can be engaged by sliding.
• the panels 10 have a width substantially equal to the corresponding internal dimension of the cross section of the sleeve 13, while the panels 12 have a width substantially equal to the corresponding external dimension of the sleeve 11.
• the sleeves 11 and 13 respectively equipped with panels 10 and 12 can be folded flat and delivered to users or stored in this form. Their volume is carried out in a simple way on building sites, without requiring special tools.
• the strapping means is constituted by the sleeve 13 itself, but it is of course possible to add metal or plastic strips to it, as in the other embodiments.
• the invention therefore provides a simple and easy-to-implement means for producing concrete poles with polygonal cross section on construction sites.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Ceramic Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
• Rod-Shaped Construction Members (AREA)
• Preparation Of Compounds By Using Micro-Organisms (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=9371851

Family Applications (1)

Country Status (8)

Families Citing this family (10)

Family Cites Families (25)

• 1988
  • 1988-11-15 FR FR8814809A patent/FR2639058B1/fr not_active Expired - Fee Related
• 1989
  • 1989-11-14 CA CA002002930A patent/CA2002930A1/fr not_active Abandoned
  • 1989-11-15 ES ES8903887A patent/ES2017350A6/es not_active Expired - Lifetime
  • 1989-11-15 WO PCT/FR1989/000585 patent/WO1990005622A1/fr active IP Right Grant
  • 1989-11-15 AU AU46374/89A patent/AU638428B2/en not_active Ceased
  • 1989-11-15 US US07/689,043 patent/US5169585A/en not_active Expired - Fee Related
  • 1989-11-15 EP EP89913061A patent/EP0447416B1/de not_active Expired - Lifetime
  • 1989-11-15 JP JP2500049A patent/JP2838438B2/ja not_active Expired - Fee Related

Non-Patent Citations (1)

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