DE29615078U1 - Natural stone cuboid with a leveling sole for mechanical laying - Google Patents

Description

aumafke+ing Development Qt
/vsuer\l<ainp 24
48734 Reken

&eegr; 02864/5154

The invention relates to irregular, chipped or rough-cut natural stone blocks which, when laid, have a leveling, fully formatted base, preferably made of concrete material, on the lower side parallel to the upper surface and can thus be laid at the same height with other natural composite stone blocks produced in this way, even by machine, on a uniformly leveled paving bed.

It is known that broken and uneven natural stone blocks, such as those found on numerous, mostly historic sidewalks, alleys and squares, break due to compressive stress, dynamic forces and inevitably due to uneven load distribution. It is also known that it is not possible to lay these natural stone blocks economically using a machine on a levelled and even paving bed, or that even when laid manually, hollow spaces develop under the partially convex or concave natural stone blocks, which later cause them to sink. Laying them in a mortar bed, which is labor-intensive and costly, is not an option, as the mortar does not achieve the necessary adhesion to the natural stone and water penetrates through settlement cracks, which causes corresponding damage in the event of frost. Furthermore, a considerable amount of extra work is required when laying new supply lines. As a surface covering, these broken and broken natural stone blocks are therefore no longer able to meet today's requirements and traffic loads. In the condition described, they often pose a danger to road users. Sometimes they were not re-laid and these valuable historic natural stone blocks ended up in crushers or languished on heaps or rubble dumps.

The object of the invention is to create fully formatted surface covering elements (Fig. 2) from these irregularly shaped natural stone blocks (Fig. 1) which, after laying, cannot be distinguished from historically laid natural stone surfaces and which can nevertheless be laid cost-effectively by machine. Compressive stress, dynamic forces and loads are thereby evenly transferred to the bedding and base layer via the molded sole (1).

According to the invention, the solution to the problem is described by the characterizing features of claim 1 and the advantageous embodiments of the invention by the further claims.

The invention is explained in more detail below using the drawings showing exemplary embodiments. The drawing is not to scale and only shows an example. It shows:

Fig. 1 Natural stone blocks

Fig.2 Natural stone blocks with base, recess, channel and laying loops

g Development C
auenKamp 24

List of reference symbols

1 sole

2 natural stone blocks

3 Recess

4 channel

5 Transport and laying loop

Uneven natural stone blocks (2) are described as surface coverings that are permanently connected to a leveling base (1) with laying loops (5) using an adhesive agent, which ensures a permanent adhesive tensile strength of 1.5 N/mm ² between the natural stone and the base in accordance with ZTV-SIB 90 / DIN 1048 after at least 50 freeze-thaw cycles. Natural stone blocks produced in this way (Fig. 2) can be laid quickly by machine on a leveled bed of chippings and transfer the shear forces, compressive stress, dynamic forces and loads evenly to the bedding and base layer. Natural stone blocks without a base, on the other hand, are difficult to lay and often break apart after being loaded.

Claims (9)

keting Development /veuenkamp 24 Kken Protection claims 1. Irregularly shaped and partially curved inwards or outwards on the underside natural stone blocks (Fig. 1) as surface coverings for walkways, alleys, squares, etc., characterized in that, when laid, a leveling, frost and de-icing salt-resistant base (1) made of concrete or plastic is permanently attached to the underside of the natural stone blocks, parallel and almost flush with the edge of the upper surface, with an average adhesive tensile strength in accordance with ZTV-SIB 90 / DIN 1048 after at least 50 freeze-thaw cycles of at least 1.5 N/mm, which enables machine-assisted or machine-based laying, transfers acting shear forces, compressive stresses, dynamic forces and loads evenly to the paving bedding and base layer, 2. Natural stone blocks according to the preceding claim, characterized in that between the natural stone (2) and the concrete base (1) there is a compensating and bonding layer of duoGraniStone (R) bonding agent, which ensures an increased adhesive tensile strength of at least 2.5 N/mm ^ after 100 freeze-thaw cycles in accordance with ZTV -SIB 90/DIN 1048. 3. Natural stone blocks according to one of the preceding claims characterized in that the leveling sole (1) projects beyond the lateral contours of the natural stone block (2). 4. Natural stone blocks according to one of the preceding claims, characterized in that the laterally projecting sole is interrupted and shaped as a spacer. 5. Natural stone blocks according to one of the preceding claims,
characterized in that the sole (1) has a reinforcement. &Eacgr;>&sgr;.&ngr;&iacgr;&OHacgr;&Ogr;,
ii'--a Develop 4S734 Reken 6. Natural stone blocks according to one of the preceding claims, characterized in that transport and laying loops (5) are attached to the sides, which enable easy demolding, cost-effective transport and efficient laying, 7. Natural stone blocks according to claim 6, characterized in that the laterally projecting sole (1) has recesses (3) into which the laterally attached transport and laying loops (5) are inserted after laying in order to be reused for later retrieval and re-laying of the natural stone blocks. 8. Natural stone blocks according to one of the preceding claims, characterized in that the base (1) is provided with at least one channel (4), the openings of which open on at least two sides of the base, through which the transport and laying loops (5) are guided or supply lines can be laid. 9. Natural stone blocks according to one of the preceding claims,
characterized in that the sole (1) is made of recycled material.