Abstract: An essentially quadrate paving stone having a corresponding base block (21) is provided on all four side surfaces (25, 26) with flange-like, upright spacers (22) which are spaced apart from each other at intervals corresponding approximately to the width of the spacers, making it possible for them to make an interlocking connection with adjacent shaped paving stones of the same type. Furthermore, the bottom side (24) of the paving stone features a number of transverse, gutter-like depressions resulting in the formation of ribs between these depressions. This creates an additional dentification, or anchoring, in the bed surface of the installed paving stones.

Abstract: An essentially quadrate paving stone having a corresponding base block (21) is provided on all four side surfaces (25, 26) with flange-like, upright spacers (22) which are spaced apart from each other at intervals corresponding approximately to the width of the spacers, making it possible for them to make an interlocking connection with adjacent shaped paving stones of the same type. Furthermore, the bottom side (24) of the paving stone features a number of transverse, gutter-like depressions resulting in the formation of ribs between these depressions. This creates an additional dentification, or anchoring, in the bed surface of the installed paving stones.

Abstract: An essentially quadrate paving stone having a corresponding base block (21) is provided on all four side surfaces (25, 26) with flange-like, upright spacers (22) which are spaced apart from each other at intervals corresponding approximately to the width of the spacers, making it possible for them to make an interlocking connection with adjacent shaped paving stones of the same type. Furthermore, the bottom side (24) of the paving stone features a number of transverse, gutter-like depressions resulting in the formation of ribs between these depressions. This creates an additional dentification, or anchoring, in the bed surface of the installed paving stones.

Abstract: A block pavement comprising (concrete) paving blocks (11, 12) is formed in such a way that individual paving strips (21, 22) adjoining one another are delimited from one another by strip joints (23, 24) designed in a wave-like manner. Each paving strip (21, 22) comprises a block unit (10), which is formed along the lines of the contour of a paving strip (21, 22).

Abstract: A block pavement comprising (concrete) paving blocks (11, 12) is formed in such a way that individual paving strips (21, 22) adjoining one another are delimited from one another by strip joints (23, 24) designed in a wave-like manner. Each paving strip (21, 22) comprises a block unit (10), which is formed along the lines of the contour of a paving strip (21, 22).

Abstract: An essentially quadrate paving stone having a corresponding base block (21) is provided on all four side surfaces (25, 26) with flange-like, upright spacers (22) which are spaced apart from each other at intervals corresponding approximately to the width of the spacers, making it possible for them to make an interlocking connection with adjacent shaped paving stones of the same type. Furthermore, the bottom side (24) of the paving stone features a number of transverse, gutter-like depressions resulting in the formation of ribs between these depressions. This creates an additional dentification, or anchoring, in the bed surface of the installed paving stones.

Abstract: Method of, and apparatus for, treating concrete blocks (10) in order to carry out an artificial aging process. For the mechanical treatment of the concrete blocks (10), the latter are positioned in a desired formation on a table top (14). Treatment bodies (17) are moved over the top side of the concrete blocks (10) with the table top (14) inclined. In this case, the concrete blocks (10) are arranged obliquely relative to one another, with the result that projecting edges and corners are partially removed.

Abstract: The invention relates to horizontally and vertically linked paving stones (10). According to the invention, projections (18) and recesses (19) are provided in the area of the bottom part (16) of the paving stones (10) used for a paved surface in order to link said paving stones horizontally and vertically. These projections and recesses engage with each other with a positive fit so as to interlock adjacent stones in a horizontal and vertical direction. The paving stones (10) are characterised in that the width of the joints (32) formed between adjacent paving stones (10) increases in a downward direction so as to form a gap which diverges downwards. This means that the material used for filling the joints can be introduced efficiently and reliably as far as the underside.

Abstract: An apparatus for the production of concrete paving stones, including an open top mold having a number of die cavities each with adjoining recesses, wherein the free volume of the recesses is reduced by local cross-sectional constrictions at the upper filling-in region of the recesses. Also included is a pressure ram for cooperation with each die cavity, the pressure ram having lateral projections each with a contour corresponding to the cross-section of the recesses at the constriction for entering into the recesses.

Abstract: 1. Paving stone set and process and device for the manufacture thereof.2.1. In the case of lawn-paving blocks formed from paving stones (10) spaced at a considerable distance apart, these are joined together, against relative displacements, by a holding grid (11) embedded in the paving stones (10) and comprising tension-resistant strands. The said holding grid allows the transfer of traction forces and hence the reciprocal safeguarding of the paving stones (10) within a paving stone set held together by the holding grid (11).2.2. The manufacture of the paving stone sets is effected in a concrete stone mold which is conventional in its principle. A flask (19) disposed on a molding plate (28) and a drawing sheet (29) is divided in the horizontal plane (33), creating a top part-flask (34) and a bottom part-flask (35). The holding grid (11) is clamped between the two part-flasks during pouring of the concrete.

Abstract: Paving stone set and process and device for the manufacture thereof.In the case of lawn-paving blocks formed from paving stones (10) spaced at a considerable distance apart, these are joined together, against relative displacements, by a holding grid (11) embedded in the paving stones (10) and comprising tension-resistant strands. The said holding grid allows the transfer of traction forces and hence the reciprocal safeguarding of the paving stones (10) within a paving stone set held together by the holding grid (11).The manufacture of the paving stone sets is effected in a concrete stone mold which is conventional in its principle. A flask (19) disposed on a molding plate (28) and a drawing sheet (29) is divided in the horizontal plane (33), creating a top part-flask (34) and a bottom part-flask (35). The holding grid (11) is clamped between the two part-flasks during pouring of the concrete. Following the completion of a paving stone set, the bottom part-flask (35) is withdrawn from the concrete stone mold.

Abstract: Known sets of structural elements have blocks with depressions and cross-shaped, T-shaped or Z-shaped connecting pieces which come to be located therein. Only retaining walls which are oriented in a straight line can be constructed.The set of structural elements according to the invention has, in addition to blocks with depressions, coupling pieces with at least a part thereof being in the form of a truncated cone, with corresponding cross-sectional shape of the depression. In this manner, a rotation of blocks, in particular located one above the other, is possible. Curved retaining walls can thus be erected.

Abstract: In the case of earth coverings made from concrete paving slabs, the noise generated by rolling traffic is disadvantageous. In order to reduce the generation of noise, plate-shaped concrete blocks exhibiting a significantly larger format than traditional paving slabs are proposed. The top side of the concrete blocks consists of a sound absorption layer (13) of porous concrete. On the bottom side, the concrete block is curved inwards, so that the fringe areas are subjected to a higher load. This results in a stable situation. For the purpose of draining off the surface water, the concrete block is equipped at the sides with upright slots (16), which adjoin the absorption layer (13) of porous concrete.

Abstract: Shaped slabs (10) made of concrete for forming groundcoverings have spacers (15 to 20) on their edges with which the shaped slabs are braced against one another when the groundcovering is completed. This bracing of the shaped slabs (10) on their spacers (15 to 20) determines the permissible traffic weights such a groundcovering may carry. This means that different shaped slabs have to be provided for groundcoverings which are suitable for heavier traffic weights. The invention is concerned with creating a universal shaped slab (10) which can be used for different traffic weights and therefore suggests shaped slabs (10) the spacers (15 to 20) of which being arranged on the side faces (11 to 14) of said shaped slabs (10) such that depending on the relative positioning of the side faces (11 to 14) when laying the shaped slabs (10), said spacers (15 to 20) are either interlocking or abutting. This way, wide or narrow joints can alternatively be formed between adjacent shaped slabs (10).

Abstract: Known groundcovering elements (44) consist of three basic shaped slabs which are connected to form a unit and which are delimited from one another by at least two dummy joints (stem dummy joint 74 and middle dummy joint 81), the peripheral surface having projections (67, 68, 79) and depressions (69, 70, 80) along an (imaginary) base line to form a toothing. To improve the stability and laying of such groundcovering elements (44), it is proposed to make these T-shaped by means of a half-size stem (13) formed approximately centrally on an elongate crossbar (12). When rhombi (45-47) are used as the basic shaped slab, the groundcovering element (44) has the form of an inclined "T".

Abstract: A retaining wall (20) of shaped blocks (22) arranged one above the other in layers (43, 58, 62) is defined with respect to the stability by the seating width and the core cross-section determined from the latter. By maximizing seating surfaces (27, 38 . . . ) of the shaped blocks resting one above the other, the seating width which is a decisive factor for determining the core cross-section is considerably increased.