Moulds for the production slab elements

Moulds for the production slab elements are designed for both single and serial production of precast reinforced-concrete slabs and walls, and occasionally also for the production of columns.

Moulds for the production slab elements are made up of a base steel frame with a casting surface, which may be complemented with sides, faces and external vibrators. Moulds for the production of wall and slab elements are placed into the interiors of precast technology facilities.

The resulting shape of the precast product is formed between the casting surface, sides and faces of the mould. In the absence of sides and faces, the casting surface should be supplemented with the necessary system formwork(proklik na související produkty) .

The casting surface of the mould is made up of steel sheet metal that is usually ground to be shiny. The casting surface makes the future exterior part of the reinforced-concrete element being made. The flatness of the casting surface is measured with a calibrated steel ruler in both the longitudinal and transverse directions. We guarantee a flatness of 1.5mm/3000 mm. For the resulting surface, no local unevenness is allowed, only a gradual wave.

The standard load-bearing capacity of the casting surface is 1000 kg/m2.

The maximum dimensions of the casting surface are not limited by production. The limiting factor is mainly transport by truck. When the required dimensions exceed the transport possibilities, larger moulds for the production of wall and slab elements are assembled from several parts at the customer’s site. The dimensions of the casting surfaces depend on the type of application of the cast element, with dimensions of 3 × 1 m to 20 × 4 m being common.

Optional add-ons

Sides and faces are used to ensure the required height of the concrete element in its entire cross-section. Integrated sides and faces are fixed or adjustable. The height of fixed and adjustable sides and faces is up to 400 mm and 100-400, respectively.

Extern…

Moulds for the production slab elements are made up of a base steel frame with a casting surface, which may be complemented with sides, faces and external vibrators. Moulds for the production of wall and slab elements are placed into the interiors of precast technology facilities.
The resulting shape of the precast product is formed between the casting surface, sides and faces of the mould. In the absence of sides and faces, the casting surface should be supplemented with the necessary system formwork(proklik na související produkty) .
The casting surface of the mould is made up of steel sheet metal that is usually ground to be shiny. The casting surface makes the future exterior part of the reinforced-concrete element being made. The flatness of the casting surface is measured with a calibrated steel ruler in both the longitudinal and transverse directions. We guarantee a flatness of 1.5mm/3000 mm. For the resulting surface, no local unevenness is allowed, only a gradual wave.
The standard load-bearing capacity of the casting surface is 1000 kg/m2.
The maximum dimensions of the casting surface are not limited by production. The limiting factor is mainly transport by truck. When the required dimensions exceed the transport possibilities, larger moulds for the production of wall and slab elements are assembled from several parts at the customer’s site. The dimensions of the casting surfaces depend on the type of application of the cast element, with dimensions of 3 × 1 m to 20 × 4 m being common.
 
Optional add-ons
Sides and faces are used to ensure the required height of the concrete element in its entire cross-section. Integrated sides and faces are fixed or adjustable. The height of fixed and adjustable sides and faces is up to 400 mm and 100-400, respectively.
External vibrators ensure the required concrete compaction. High-frequency vibrators with a frequency of 50-200 Hz are used.
When using external vibrators, we recommended placing mould for wall and slab elements on anti-vibration blocks that prevent the spread of unwanted vibrations into the surrounding structures of the production hall.
Heat curing is a suitable solution for accelerated and even concrete curing. Moulds for the production of wall and flat elements can be equipped with heating tubes using heating oil or hot water.
System formwork is used to complement sets of fixed sides and faces for the production of dimensional variants of flat elements or openings in walls of precast elements (windows, doors, etc.) System formwork includes magnets and magnetic sides carriers. For more information on system formwork, see Accessories for concrete production(proklik na související produkty) .
Moulds for the production for the production of wall and slab elements are classified into tilting and non-tilting.
 
Non-tilting moulds for the production of flat elements – fixed tables
A non-tilting mould for the production of wall and slab elements is a fixed table. Fixed tables are used often for the serial production of precast flat elements made of reinforced concrete.
A fixed table has its own rigid frame fitted with the casting surface. The frame is equipped with support points (uprights), and the entire fixed table is placed freely on the floor of the production hall. Non-tilting fixed tables are self-supporting, thus guaranteeing sufficient rigidity for the use of handling equipment (lifting beams) → Machinery and equipment  or a forklift truck including the precast element. Fixed tables can be fixed to the floor of the production hall or can be modified for stacking (stacking multiple fixed tables on top of each other).
Note: Non-tilting fixed tables can be used in automated production processes in precast facilities with Industry 4.0. Fixed tables are also moved by means of handling equipment → Machinery and equipment.
Non-tilting fixed table use
<ul>
<li>road panels</li>
<li>wall elements</li>
<li>sandwich panels</li>
<li>filigree slabs</li>
<li>ceiling girders, load bearers</li>
<li>special uses and more</li>
</ul>
 
Tilting moulds for the production of wall and slab elements – tilting tables
Tilting moulds for the production precast wall and slab elements, or tilting tables, are used to make large reinforced-concrete wall and slab elements in both serial and single-unit production.
By tilting the casting surface by approximately 80°, the negative force effects on the handling hinge or the entire concrete element are eliminated during the casting process by means of the lifting equipment (lifting beam). Thus, there is no damage caused to the element produced (permanent deformation) due to insufficient handling strength in the horizontal position.
The tilting table is made up of stools that are firmly connected to the floor of the production hall, a rigid frame with the casting surface and lower sides. The frame is connected to the stools via articulated joints, thus allowing the user to tilt the casting surface. The tilting of the casting surface can be performed by a lifting device behind the reinforced frame or by telescopic hydraulic cylinders located at the bottom of the tilting table.
The casting surface always includes a lower side on which the element rests when the casting surface is tilted. The side can be fixed/sliding.
 
PREFA Technology recommends
Protecting the casting surface against corrosion and improving the quality of precast products, thus we recommend applying Master Finish FW 323 by BASF.

Non-tilting pallet_mould for road slab_2

Non-tilting pallet_mould for road slab_1

Technical parameters of moulds for the production of wall and slab elements

casting surface flatness: 1,5 mm/3000 mm
casting surface load-: 1000 kg/m2
side/face variant: fixed/sliding
element height: normally up to 400 mm
typical casting surface dimensions: according to use, 3 × 1 m up to 20 × 4 m
casting surface tilt: 78–80°
maximum axial load: normally 30 000 kg

Remarks: Technical parameters can be adjusted according to the customer’s needs

Concrete spreaders

Concrete spreaders (also known as concrete distributors) are used for the quick and precise dispensing of concrete when producing slab and wall elements made of reinforced concrete.

Concrete buckets

Concrete buckets are most commonly used to transport fresh concrete from the mixing centre to the post-processing site.

TURNING MACHINES FOR REINFORCED-CONCRETE ELEMENTS

Turning machines for reinforced-concrete elements are designed for putting a handled element into either an assembly or storage position.

LIFTING BEAMS

Lifting beams, are devices used for handling loosely suspended loads that require handling (support) at multiple points. They consist of one or multiple support elements with gripping points.

Formwork and accessories

Formwork for the production of concrete is an additional assortment in the production of reinforced-concrete elements. The solutions we offer allow you to assemble moulds for concrete without damaging the casting surfaces.

LIFTING CLAMPS

Lifting clamps are an extension to the lifting beam range. These are lifting mechanisms that are used for handling loads that do not allow for handling through the use of slings (handling by slings, sleeves, etc.).

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Moulds for the production slab elements

Technical parameters of moulds for the production of wall and slab elements

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