Brief description of embodiments of the elements in concrete a surface effect, equipment for its implementation and elements thus obtained

摘要

The preparation of a new type of paving stone from a modified plastic concrete material of a specified color with irregular patches introduced with a concrete of a different color, using a deformable plastic mold. The concrete elements (1) are prepared as follows :- -preparation of a mold with at least one cast impression (9) in a deformable plastic material, having a base wall (6) which corresponds to the visible face and a mold opening by extraction ; -positioning of the mold for gravity filling ; -deposition, in an irregular manner, of one or more patches of concrete (10) of a different color from the bulk material, on the wall (6) without covering the entire wall ; -filling of the mold with the main plastic concrete material by vibration of the mold and leveling ; -storage of the filled mold for one day followed by de-molding. Independent claims are also included for the molded elements obtained and the molds for effecting the operation.