Abstract: A molded brick, in particular made from concrete, for laying ground coverings (10, 30), the molded brick (11, 12, 31, 32, 33) having an upper side (13) which is delimited in the transition to upright side faces (15, 16, 17, 18) by a side edge (20) which frames the upper side (13). The course of the side edge (20) of the molded brick is of curved configuration at least in regions and to correspond to a mathematical function, the course of the side edge (20) preferably corresponding at least in regions to the function ƒ(x)=a*ln(x)+b.

Abstract: A retaining wall, in particular a retaining wall (24) inclined against a soil backfill, composed of individual shaped blocks (20, 21, 22, 23), the shaped blocks (20, 21, 22, 23) being arranged one above the other in layers (30) and the shaped blocks (20, 21, 22, 23) of adjacent layers (30) each engaging in a form-fitting manner with one another in the region of upper sides (25) and lower sides (26) of the shaped blocks (20, 21, 22, 23). Provision is made according to the invention for upper sides (25) and lower sides (26) of the shaped blocks (20, 21, 22, 23) to be designed and/or oriented in such a way that when lateral pressure is exerted transversely to an imaginary longitudinal axis of the retaining wall (24), individual layers (30) can be displaced in the corresponding direction.

Abstract: A molded brick, in particular made from concrete, for laying ground coverings (10, 30), the molded brick (11, 12, 31, 32, 33) having an upper side (13) which is delimited in the transition to upright side faces (15, 16, 17, 18) by a side edge (20) which frames the upper side (13). The course of the side edge (20) of the molded brick is of curved configuration at least in regions and to correspond to a mathematical function, the course of the side edge (20) preferably corresponding at least in regions to the function ƒ(x)=a*ln(x)+b.

Abstract: A retaining wall, in particular a retaining wall (24) inclined against a soil backfill, composed of individual shaped blocks (20, 21, 22, 23), the shaped blocks (20, 21, 22, 23) being arranged one above the other in layers (30) and the shaped blocks (20, 21, 22, 23) of adjacent layers (30) each engaging in a form-fitting manner with one another in the region of upper sides (25) and lower sides (26) of the shaped blocks (20, 21, 22, 23). Provision is made according to the invention for upper sides (25) and lower sides (26) of the shaped blocks (20, 21, 22, 23) to be designed and/or oriented in such a way that when lateral pressure is exerted transversely to an imaginary longitudinal axis of the retaining wall (24), individual layers (30) can be displaced in the corresponding direction.

Abstract: An apparatus for the production of molded concrete building blocks (10), hollow concrete elements or the like, the apparatus having a mold frame (21) which has at least one mold cavity (14) into which concrete can be poured upright mold walls (15, 16) of the mold frame (21) bounding the mold cavity (14), and at least one scraping member (22) with which concrete can be scraped off on an exterior side of the molded piece, in order to form a roughened surface, preferably during an upward movement of the mold frame (21) while the molded pieces are being removed from the mold, with the scraping member (22), on a side facing the molded piece, having an exterior surface (24) which is at least partially curved in cross sections, and preferably of continuously curved design with a constant radius.