The invention relates to an apparatus (100) for the manufacturing of a formwork member (F) comprising a first formwork panel (Fl) and a second formwork panel (F2) made of expanded polystyrene, said panels being restrained and spaced apart from each other by a plurality of truss metal structures (TS) arranged parallel to one another in a longitudinal direction (L), said apparatus (100) comprising a feeding station (110) configured to feed a plurality of truss metal structures (TS) arranged in parallel and a molding station (120) arranged after said feeding station (110) and configured to receive therefrom said truss metal structures (TS) and to make on a transverse portion thereof a first panel (Fl) of a formwork member (F), wherein said molding station (120) comprises a molding chamber (121) configured for the injection of polystyrene spheres or beads and their expansion by supplying steam, said spheres or beads being intended to form said first panel (Fl) embedding a portion of the truss metal structures (TS), and wherein the molding station also comprises a dimensional stabilization chamber (122) contiguous to said molding chamber (121) and configured to receive the first panel (Fl) formed therein. An auxiliary molding chamber (123) is arranged between the molding chamber (121) and the dimensional stabilization chamber (122), said auxiliary molding chamber (123) communicating with the molding chamber (121) and the dimensional stabilization chamber (122) and being configured to be selectively heated by supplying steam. The apparatus (100) further comprises a moving assembly (150) arranged directly after the molding station (120), said moving assembly (150) being configured as a press to grab a portion of the first panel (Fl) coming out from the dimensional stabilization chamber (122) and make it move in the manufacturing direction (L) by a desired length, thereby partially or completely adding the volume of the auxiliary molding chamber (123) of the molding station (120) to the volume of the molding chamber (121). The invention also relates to a process for the manufacturing of formwork members that may be carried out by the apparatus above.
B29C 70/68 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers
B29C 70/88 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
B29C 44/32 - Incorporating or moulding on preformed parts, e.g. linings, inserts or reinforcements
B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
B29K 105/04 - Condition, form or state of moulded material cellular or porous
B29K 25/00 - Use of polymers of vinyl-aromatic compounds as moulding material
B29L 31/10 - Building elements, e.g. bricks, blocks, tiles, panels, posts, beams
2.
LOST FORMWORK STRUCTURE FOR MAKING STAIRCASES AND STAIR- LANDINGS, METHOD FOR MAKING SUCH STRUCTURES AND METHOD FOR THE RELATIVE APPLICATION
The invention is directed to a prefabricated stair formwork structure (1) for making a stair flight, comprising: a first space (A) for containing a concrete cast defined by two longitudinal beam elements (11, 12), arranged parallel to one another, and two transversal beam elements (13,14), also arranged parallel to one another and each coupled with both said longitudinal beam elements (11, 12) at their respective ends; a plurality of shaped elements (15) each defining a second containment space (S) for a concrete cast of corresponding steps, said shaped elements (15) being fixed in succession above said at least two longitudinal beam elements (11, 12); an element (16) for closing the bottom of the formwork structure (1), fixed to said longitudinal and/or transversal beam elements on the opposite side with respect to said shaped elements (15); and a reinforcement structure (C) of the concrete housed in said first containment space (A). The invention is also directed to a prefabricated formwork structure for making a stair landing, comprising: two longitudinal beam elements and two transversal beam elements coupled with both of said longitudinal beam elements to define a containment space for a concrete cast; an element for closing the bottom of the formwork structure, fixed to said longitudinal and/or transversal beam elements; and a reinforcement structure for the concrete housed in said containment space.
E04F 11/022 - StairwaysLayouts thereof characterised by the supporting structure
E04G 13/06 - Falsework, forms or shutterings for particular parts of buildings, e.g. stairs, steps, cornices or balconies for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
3.
Load bearing construction element, in particular for manufacturing building floors, and floor structure incorporating such element
b) a reinforcement metal structure (11) of the casting (5), housed in the longitudinal channel (4), associated to the elongated body (3) and having opposite free ends (12) protruding from longitudinally opposite parts of the elongated body (3) for a portion of predetermined length.
Advantageously, the composite construction element (2) possesses optimum load bearing characteristics, lightness and flexibility of use.
A floor structure (1) of the type having “crossed reinforcement rods” is described comprising:
a) of the body (3);
a) of the elongated body (3) made of expanded plastic material.
Advantageously, the floor structure (1) exhibits lightness and self-supporting characteristics and allows to achieve a substantial reduction of the labor and costs for its manufacture.
E04B 5/38 - Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcementForm slabs with reinforcements extending laterally outside the element
A composite construction element (1) is described comprising a body (2) made of expanded plastics material provided with opposite faces (8, 9) and at least one reinforcing section bar (10, 11), transversely extending in the body (2) between the faces (8, 9) and incorporated in the expanded plastic materials. The reinforcing section bar (10, 11) comprises a central portion (12) having at least one fin (13, 14) extending in a cantilevered fashion from the same and forming a longitudinal edge (15a, 15b) therewith and a plurality of openings (16, 17) at least partially formed in the central portion (12) of the section bar (10, 11) at the longitudinal edge (15a, 15b). Advantageously, the construction element (1) has improved self-supporting characteristics and improved characteristics of resistance to bending loads which it is subjected to during installation.
E04B 5/02 - Load-carrying floor structures formed substantially of prefabricated units
E04C 2/22 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the likeBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of plasticsBuilding elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of foamed products of plastics reinforced
E04C 2/296 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups , , , or of materials covered by one of these groups with a material not specified in one of these groups at least one of the materials being insulating composed of insulating material and non-metallic or unspecified sheet-material
