Abstract: The paving stone set consists of stones 11-16 each with six lateral boundary surfaces 1-6, 17-22. Four of these boundary surfaces 1 and 4; 3 and 5; 18 and 21; 19 and 22 are parallel to one of the other of the four surfaces, while the remaining two surfaces 2 and 6; 17 and 20 define planes which intersect at an acute angle. On the straight edges, the stones 11-13 are laid alternatingly. A joint pattern is created with expansion joints, which do not stand vertically to the support joints. The expansion joints are formed from two wedges directed opposite to one another, and therefore have an effect which is irregular in comparison with the support joints. The slotted boundary surfaces 2, 6 make it possible to lay the stones 11-13 according to the sloping angles selected in curves with small radii chosen as desired, whereby the wedge-shaped joints close gradually. The stones 14-16 serve as a supplementary curve set, and make possible the laying of Roman arrow patterns, as well as an Archimedean spiral.

Abstract: A wall block set comprising frontal blocks, anchoring blocks and connecting blocks. The frontal blocks have a forward side with a texture similar to natural stone, and have dovetail projections which are integrally formed on the rear side of the frontal block. The frontal blocks having a base width are inserted in irregular alternation. Another type of front side has a hollow shape and therefore permits planting of foliage. The anchoring blocks and connecting blocks form distancing elements with dovetail projections, lying opposite to one another, with the same dimension as the projections of the frontal blocks. Through the interlacing of the frontal blocks with these anchoring and connecting blocks, double-faced dry walls of various thicknesses, as well as slope walls, which are secured on the slope by means of retainers, may be constructed.

Abstract: Apparatus for making a concrete brick, the brick having at least one visible surface having a texture similar to that of natural stone. The brick may be made by filling a mold with concrete, vibrating the mold, and using a descending plunger to compress the concrete in the filled mold. At least one interior surface of the mold has a textured surface used to form the texture in the brick. Following compression of the concrete, a movable sidewall of the mold is moved laterally away from the brick a distance sufficient for the textured surface of the mold wall to clear the textured surface of the brick when the mold is raised. With the plunger remaining in place, the mold is raised, following which the plunger is raised.

Abstract: The invention relates to a curved like paving stone element for setting of a curved paving, characterized in that the curved element is limited by an outer circular curve having a radius and an inner circular curve having the same radius with the center points of the circular curves disposed on a radial straight at a distance from each other corresponding to the largest width of the curved element. The curved element consists of two outer stones and a center stone of about the same curvature length, where the outer stones are separated into three individual stones by means of non-continuous separating joints and the center stone is separated into either two or three individual stones. The curved element is asymmetrically offset with respect to the radial straight in such a manner that the outer edge of an outer stone is smaller than the opposite outer edge of the other outer stone and the size of this difference corresponds to about the width of the stone with the smaller outer edge.

Abstract: Each road surface element (1) has a cut-out portion (3), which is delimited by means of section (4b) of a plate (4). The cut-out portion (3) is traversed by a bolt (6). A locking piece (2), which has two catches (26) on its lower side is inserted into the chamber formed by the cut-out portions of two adjacent elements and is then rotated so that the catches (26) come to rest beneath the bolts (6). The two elements are then locked together and forces are transmitted through the two locking portions and the catches (26) to the bolt (6) and thus from one element to the other. The upper surface of the locking piece (2) is level with the surface of the two elements.Application more particularly to the production of temporary road surfaces, for example, during road detours or for use in construction excavations.