Road structure – process – or apparatus – Pavement – Modules or blocks
Patent
1994-05-19
1996-01-23
Neuder, William P.
Road structure, process, or apparatus
Pavement
Modules or blocks
264260, E01C 1116
Patent
active
054860660
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a paving stone set for lawn paving, in which the paving stone set comprises concrete paving stones which are spaced apart, creating wide longitudinal gaps and transverse gaps suitable for plant growth, and are joined together by holding grids and secured against displacement. The invention further relates to a process and a device for the manufacture of paving stone sets.
Paving blocks, which allow plant growth within gaps between the paving stones, are gaining increasingly in importance. In order to ensure a load-bearing capacity of the so-called "lawn paving blocks" in respect of stationary and--to a limited extent--rolling traffic, the paving stones need to be secured against displacement. For this purpose, spacers have hitherto been disposed in the gaps, by means of which spacers the adjacent paving stones are mutually supported. In the case of the lawn paving according to EP-A-259 735, the paving stones are mutually supported by spacers which, after a certain time, perish in the ground.
The laying of paving blocks of this type is complex. Moreover, the spacers have to be produced and kept handy as separate elements of the paving block.
From EP-A-0 004 364, a laying unit made from concrete paving stones is known, in which the paving stones are joined by means of a network and by means of concrete webs. The concrete webs extend in the region of longitudinal gaps and transverse gaps. The network is disposed closely adjacent to the bottom side of the concrete paving stones. The holding grid, both in the region of the concrete paving stones and in the region of the concrete webs and longitudinal and transverse gaps, is embedded in concrete.
U.S. Pat. No. 1,592,591shows a device for the manufacture of clay bricks and solid bricks joined together by a wire grid. The interconnected bricks serve as an outer lining for walls. The bricks are spaced apart, so that transverse and longitudinal gaps are formed. These are then filled in with mortar. The production mold comprises a top part and a bottom part. The bottom part is closed off on its bottom side by a base. Parallel to this base runs a partition plane which divides the mold.
NL-A-6 803 753 shows an individual concrete stone, which is passed through by a grid, a process and a device for the manufacture of said concrete stone.
The object of the invention is to propose, for the design of a lawn paving block and its production, measures which represent a simplification compared to the previous solutions and which ensure moreover, in a simple manner, the long-term securement of the paving stones of the installed paving block.
In order to achieve this object, the paving stone set according to the invention is characterized in that the concrete paving stones are joined together exclusively by the holding grid, in that the holding grid consists of tension-resistant and non-perishable elastic material and lies continuously exposed in the region of the longitudinal gaps and transverse gaps, and in that the holding grid, exclusively in the region of the concrete paving stones, is fully embedded in the latter, and in that the holding grid, at a distance from a bottom side of the concrete paving stones, is embedded in the latter, which distance corresponds to one-quarter to one-third the total height of a concrete paving stone.
A paving stone set respectively comprises a group of simultaneously produced paving stones, which, in their manufacture, are joined together into a unit by a holding grid embedded in the concrete. The holding grid comprises longitudinal strands and transverse strands, which are capable of absorbing tensile loads. The paving stones of the lawn paving are consequently secured, in terms of their relative position to one another, by members which are capable of bearing a tensile load. In the region of the longitudinal gaps and transverse gaps, no further connecting or supporting members for the paving stones are arranged.
The holding grid is configured such that plant growth in the otherwise continuously exposed longitudinal
REFERENCES:
patent: 1592591 (1926-07-01), Amele
patent: 4098562 (1978-07-01), Levin
patent: 4168924 (1979-09-01), Draper et al.
Neuder William P.
SF-Kooperation GmbH Beton Konzepte
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