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The form/mould to produce precast concrete roofing elements and floors are of the self-reacting type. This means that the pull heads and the strand tension contrast structures are integrated within the formwork itself. On one side of the track there is the “fixed head”, whose function is to fix the cables under tension, while on the opposite side there is the “relaxation head”, where the de-tensioning cylinders of the strands are applied.
Typical slab width is 2.4m, but larger versions may also be available.
Bianchi Casseforme can supply TT tracks with a fixed shape, where it is possible to modify the height of the ribs by inserting bottoms and the width by moving the side rails. Alternatively, a fully hydraulic version is available, where all the dimensions of the element can be changed in a short time, by acting on the levers of a control unit.
Furthermore, the lateral sides of the formwork can be opened to easily access the internal parts.
These form/mould can be equipped with a vibration system, which compacts the concrete by removing the air, thus improving its resistance. The presence of a curing pipes increases productivity by reducing time. This system consists of a series of finned pipes through which hot steam/water passes, positioned under the casting surface.
To keep the heat inside the formwork, insulating sandwich panels or polyurethane panels can be mounted.
Essential devices for a production line of prestressed elements are the hydraulic power units and pulling lances to be able to perform the tensioning of each single cable, and the relaxation units to proceed with the de-tensioning of the strands with a single movement of the heads of the track.
The form/mould to produce preroofing elements and floors are of the self-reacting type. This means that the stressing heads and the strand tension structures are integrated within the formwork itself. On the one side of the line there is the “fixed head”, whose function is to hold the strands under tension, while on the opposite side there is the “relaxation head”, where the de-tensioning cylinders of the strands.
The form is generally made up of:
Lower section made of sheet steel, reinforced by other press-bent sheets and beams, supported, and fixed on anti-vibration bases.
Self-reacting structure and pair of abutment heads, one with cylinders for relaxing the strands.
An upper pad made of sheet metal reinforced with structural profiles; this part can be moved with an overhead crane or raised hydraulically by rotating around a hinge.
This type of element often has curved surfaces that are obtained from the rolling the plates of the formwork. For this reason, particular attention is paid, during the production of the formwork, to the finishing of the surfaces that will meet the casting surface.
These forms can be equipped with a vibration system, which compacts the concrete by removing the air, thus improving its resistance. The presence of a curing pipes increases productivity by reducing time. This system consists of a series of finned pipes through which hot steam/water passes, positioned under the casting surface.
To keep the heat inside the formwork, insulating sandwich panels or polyurethane panels can be mounted.
Essential devices for a production line of prestressed elements are the hydraulic power units and pulling lances to be able to perform the tensioning of each single cable, and the relaxation units to proceed with the de-tensioning of the strands with a single movement of the heads of the track.
Battery formwork to produce roofing elements for these industrial buildings that are coupled to the so-called “wing” roofing beams. The elements can be flat or ribbed, curved or straight in the depending on building roofing solution.
It consists of a metal profile frame on to which a fixed single-sided end wall is fixed, and on which several movable double-sided walls slide by means of hydraulic cylinders or geared motors.
This form/mould can also be used to produce thin panels to make precast concrete fences (in conjunction with pillar and foundation type elements.
The formwork can be completed with a curing system with perforated or finned tubes and an electric or pneumatic vibration system.
BIANCHI CASSEFORME SRL - Fornovo di Taro (PR) - P. Iva: 01669850347 | URI: PARMA - REA: 170395 - Cap. Soc. 500.000,00 €
