Abstract:
The invention is based on a flat moulded concrete slab, especially for liquid-proof ground coverage. In dealing with substances, especially liquids, which are harmful to the ground, the intention is to prevent their further spread in the event of egress, spillage, outflow or the like. The concrete slab (10) of the invention is divided into sections (13) by dummy joints (12) in grid array. The dummy joints (12) act as drainage channels so that any liquid running out can run off via the dummy joints (12) and the surfaces of the sections (13) remain largely liquid free. This prevents the liquid from being further distributed by the passage of pedestrians or vehicles over the concrete slab (10).
Abstract:
In lawn covers made of paving stones (10) mutually separated by a relatively large gap, the paving stones are linked to each other so as not to move in relation to each other by a holding grid (11) imbedded in the paving stones (10) and composed of traction-resistant branches, so that traction forces are transmitted and the paving stones (10) are mutually secured as a linked group of paving stones by the holding grid (11). The set of paving stones is produced in an essentially classical concrete stone mould. A moulding box (19) arranged on a bearing board (28) or draw plate (29) is horizontally subdivided along the horizontal plane (33), forming a top partial moulding box (34) and a bottom partial moulding box (35). The holding grid (11) is clamped between both partial moulding boxes during concreting. When a group of paving stones is ready, the bottom partial moulding box (35) withdrawn from the concrete stone mould. The finished product can then be removed as usual from the mould.
Abstract:
A paving assembly (1) comprises a plurality of paving elements (2) interconnected by a reinforcing and interconnecting mesh (5) of plastics material. Adjacent paving elements (2) are joined by frangible links (15) which assist in spacing the elements (2) to define interstices (9) to receive bedding sand. The links (15) have fault line (16) along which the links (15) may be broken to accomodate articulation between adjacent paving elements (2), on fitting. A mechanical interlock is formed when the paving is in place and the faces of the link posts (15) re-engage. In some cases a paving assembly (100) may comprise paving elements (101) which do not have a joining mesh.