DEVICE AND METHOD FOR CASTING CONCRETE OBJECTS

摘要

The invention relates to a device and a method wherein a product mould is placed in a basin. The product mould is filled with wet concrete and an intermediate space between the product mould and the basin is filled with a non-hardening slurry having a density substantially similar to the density of the wet concrete. During the filling, the level difference between the wet concrete surface level and the non-hardening slurry surface level is controlled such that the pressure of the wet concrete on the inside of an outer wall of the form mould is substantially balanced by the pressure of the slurry on the outside of the outer wall of the form mould. The invention thus enables the use of a product mould that differs from traditional form works in that its outer wall does not need to support the pressure of the wet concrete contained within the product cavity.

主权项

1. A device for casting a concrete product, the device comprising:
a product mould, the product mould defining a product shape defining cavity, said cavity being delimited by an outer wall of the mould and being adapted to be filled with wet concrete that hardens in the cavity to form the concrete product, a slurry basin, which slurry basin is adapted to receive therein at least partially the product mould such that an intermediate space is present between at least a portion of the outer wall of the product mould and the slurry basin, a wet concrete supply device, which wet concrete supply device is adapted to provide a flow of wet concrete into the product cavity of the product mould to fill the product cavity with wet concrete, a non-hardening slurry supply device, which non-hardening slurry supply device comprises a slurry storage for storing a non-hardening slurry having a density substantially similar to the density of concrete, and which non-hardening slurry supply device is adapted to provide a flow of the non-hardening slurry into the slurry basin, more in particular into the intermediate space present between at least a portion of the outer wall of the product mould and the slurry basin, to fill the intermediate space with non-hardening slurry, and a control system, the control system comprising a control device adapted to control filling of the product cavity and/or filling of the slurry basin such that, while filling the product cavity with wet concrete and the intermediate space with non-hardening slurry, the level difference between the wet concrete surface level inside the product mould and the slurry surface level in the slurry basin can be controlled.