Abstract: The invention relates to a device and a method wherein a product mold is placed in a basin. The product mold is filled with wet concrete and an intermediate space between the product mold 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 mold is substantially balanced by the pressure of the slurry on the outside of the outer wall of the form mold. The invention thus enables the use of a product mold 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.

Abstract: 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.