DE29607105U1 - Artificial stone element - Google Patents

Description

The present invention relates to an artificial stone element for forming a paving together with other artificial stone elements with a top side that can be walked on or driven on, a bottom side opposite the top side and circumferential side walls between the top side and bottom side. Such artificial stone elements are used in the slab and paving sector as concrete blocks. Concrete blocks should be simple and easy to lay and at the same time be inexpensive to manufacture as a mass product. In terms of walkability and drivability, increasingly higher demands are being placed on such stones or the paving.

STATE OF THE ART

Concrete blocks are known as paving stones for paving streets, parking lots, pedestrian zones and paths of various shapes. However, with large areas, there is the problem of collecting the amount of rainwater that occurs during rainfall on relatively large paved areas in the sewer system and draining it away into the receiving water, as the sewer cross-sections are often not dimensioned for such large amounts of water, especially those that occur during cloudbursts. From an ecological point of view, the "sealing" of larger areas is frowned upon and is increasingly rarely approved. Rainwater places an unnecessary quantitative burden on the sewer system and the sewage treatment plants.

In order to drain rainwater as quickly as possible and without causing major flooding or water accumulation, a concrete block is specified in the German utility model 88 09 820.6.

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which has a geometric floor plan consisting of two regular pentagons connected along a base edge. In this case, recesses are provided at two corners of the pentagons, each parallel to the base edge, opposite one another, so that when the concrete blocks are laid, square recesses are formed between the blocks into which the rainwater can seep.

A concrete block is known from the German utility model 91 11 552.3, which is designed as a double composite block with widened shoulder areas on both front sides and in which the front sides each have a recess. When the block is laid, the recesses of neighboring concrete blocks abut one another, so that, for example, a square recess is formed. This is filled with grit. Rainwater can seep into this recess if necessary.

Such stones are not ideal in terms of their walking comfort. The relatively large recesses filled with grit prevent the use of such stones in the area of department store parking lots, for example, since it is practically impossible to drive a shopping cart over a pavement made of such paving stones.

Overall, the walkability does not meet the high standard required. Furthermore, the amount of water that can seep in per unit of time is limited, so that the immediate seepage of large amounts of rain cannot necessarily be guaranteed.

Furthermore, paving stones are known that have an open pore structure through which water can seep. In order to ensure sufficient strength and good walkability, the pore diameters are kept very small. However, this leads to

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Over time, the small surface pores become clogged due to contamination, so that water can no longer drain through the pore system. Furthermore, a stone with an open pore system is known that has a V-shaped groove running around its side walls. This groove is connected to a recess pointing towards the underside of the stone. The V-shaped groove is intended to ensure that the water seeping through the pore system is collected and drained away. Here, too, the problem of contamination arises, so that over time such a stone is no longer able to absorb and drain away sufficient surface water.

DESCRIPTION OF THE INVENTION

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The invention is based on the problem of specifying an artificial stone element that can be laid easily and safely, that ensures good walking and driving properties, that can be used flexibly and with which a paving can be created at the same time that can easily absorb rainwater or drain it into the ground.

This invention is given in the concrete block of the type mentioned at the beginning by the features of independent claim 1. Advantageous embodiments and further developments are the subject of the dependent claims.

The artificial stone element according to the invention is accordingly characterized in that a first projection unit is present on a first side wall, which ends at the top with the top of the artificial stone element, runs over essentially the entire width of the top and which has a cross-sectional height in the free end that is less than 40% of the height of the artificial stone element, and a second projection unit is present on a second side wall opposite the first side wall or an adjacent side wall.

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is present which has a geometric shape substantially corresponding to the first projection unit.

With such a stone, paving can be laid that has relatively small joints, i.e. that are extremely pleasant to walk on, whereby the geometry of the projection units ensures that the joint remains open. Due to the relatively low cross-sectional height of the projection units in the front end area, the joint does not become flooded. In addition, keeping the joints clear is supported by the fact that when driving over them, a certain suction effect is exerted on the joint as a result of the rolling wheel, which encourages the throwing out of dirt particles. By forming the opposite or adjacent side wall with a corresponding projection unit, a joint is also created on this side wall that remains open and therefore reliably ensures the permanent drainage or absorption of large amounts of rainwater through the stone geometry.

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A particularly preferred embodiment of the artificial stone element according to the invention is characterized in that at least one, in particular two, spacer stud units are present on the ¹ end face of the first and/or second projection unit, which run essentially at right angles to the upper side, wherein the spacer stud units can preferably each run over the entire cross-sectional height of the projection unit.

In order to achieve a uniform joint pattern when laying artificial paving stones, a further design of the artificial stone element is characterized in that at least one, in particular two, spacer stud unit(s) are present on one of the two remaining side walls, which run essentially at right angles to the top, with the spacer stud units preferably running essentially over the entire height of the artificial stone element. _ ₅ _

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A preferred embodiment of the artificial stone element according to the invention with regard to the required strengths and a simple and economical manufacturing process is characterized in that the underside of the first and/or second projection unit is inclined so that the cross-sectional height of the projection unit decreases linearly outwards.

A further development of the artificial stone according to the invention is characterized in that the cantilever length of the projection unit is in the range between 1 cm and 3 cm. With these geometric conditions, sufficient strength against static and dynamic loads can be guaranteed.

A particularly preferred unfolding of the artificial stone element according to the invention with regard to machine-laid or manually laid paving is characterized in that the length and/or width of the artificial stone element is in the range between 10 cm and 20 cm.

A particularly advantageous further development is characterized in that the first and second projection units are present on two adjacent side walls.

A particularly preferred embodiment of the artificial stone element according to the invention, which satisfies the static and dynamic requirements and ensures simple and economical production in addition to simple installation, is characterized in that the linear reduction in the underside of the projection unit extends essentially from the underside of the artificial stone element to a height of over 60% of the height of the artificial stone element.

A further embodiment is characterized in that the underside of the projection unit has a curvature, in particular a part-circular curvature, so that sufficient volume

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can be made available for sudden rainwater.

Further embodiments and advantages of the invention result from the features further listed in the claims and from the exemplary embodiments given below. The features of the claims can be combined with one another in any way, provided they do not obviously exclude one another.
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SHORT DESCRIPTION OF THE DRAWING

The invention and advantageous embodiments and further developments of the same are described and explained in more detail below using the examples shown in the drawing. The features shown in the description and the drawing can be used individually or in groups in any combination according to the invention. They show:

Fig. 1 schematic plan view of an artificial stone element with a first projection unit and a second projection unit,

Fig. 2 folded view of the artificial stone element according to Fig. 1 in the direction of arrow A,

Fig. 3 View of the artificial stone element according to Fig. 1 in direction of arrow B,
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Fig. 4 View of the artificial stone element according to Fig. 1 in the direction of arrow C,

Fig. 5 schematic detailed perspective view of an artificial stone element according to Fig. 1 to 4 and

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Fig. 6 to 8

Schematic representation of the attachment area of two artificial stone elements with different projection unit geometries.

WAYS TO CARRY OUT THE INVENTION

An artificial stone element 10 has a walkable or drivable top side 12, a bottom side 14 opposite the top side 12 and side walls 16, 18, 26 located between the top side 12 and the bottom side 14.

In the artificial stone element 10 shown in Fig. 1, the first side wall 16 is present in the left area and a first projection unit 20 is molded onto the top of the element 10 flush with the top side 12. The projection unit 20 runs over the entire length LS of the element 10. The projection unit 20 has an inclined bottom 34 so that the cross-sectional height of the projection unit 20 decreases towards the outside. In the free end area, the projection unit 20 has a cross-sectional height H. The height H is approximately 30% of the height HS of the element 10. Two spaced apart spacer units 24 are molded onto this end area, which are arranged at right angles to the top side 12 of the artificial stone element 10 and run over the entire cross-sectional height H of the projection unit 20.

On the second side wall 18 opposite the first side wall 16, the artificial stone element 10 has a second projection unit 22, the shape of which essentially corresponds to the outer contour of the projection unit 20 in an axially symmetrical sense, whereby an inclined lower surface 34 is also present in this area. Except for the spacer units 24, the mirror-image contour of the second side wall 18 thus corresponds to that of the first side wall 16.

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The corresponding design of the geometry of the projection unit 20 or the second projection unit 22 makes it possible to place the artificial stone elements together without any problems and to form joints.

On the further side wall 26 shown in Fig. 1, which runs between the first side wall 16 and the second side wall 18, two spaced apart spacer units 28 are formed, which run essentially at right angles to the top side 12 and extend over the entire cross-sectional height HS of the artificial stone element. The opposite side wall 26 has no spacer units.

The second projection unit 22 on the second side wall ensures, through the cavity formed underneath it - in addition to the cavity under the first projection unit 20 when laid - that water that suddenly appears up to a certain size can be absorbed by the stone geometry, since an increased collection volume can be made available. The height H of the projection units 20, 22 is "so small" that the joint formed when laid can be kept open over a long period of time, since clogging is largely prevented due to the geometry (small height H). This means that such a paving stone guarantees reliable water absorption over a long period of time.

The dimensions 16/16, 20/20 or 10/20 (each in centimeters) are preferred as sensible length/width dimensions for the artificial stone element.

For reasons of better representation, the dimension L of the length of the projection unit 20 and thus also of the recess unit is shown enlarged in the figures. The dimension L is usually 1 cm to 3 cm.

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A reasonable range for the dimension H is between 10% and 40%, in particular 30%, of the height HS of the artificial stone element 10·

In the section of two abutting artificial stones 10 shown in Fig. 6, a spacer unit 50 IQ is arranged in the cavity created under the projection units 20, 22 in order to ensure precise laying of the artificial stones 10. The spacer unit can also have recesses running from top to bottom through which rainwater can be drained into the ground.

"L5 In the detail of two adjacent artificial stones shown in Fig. 7, the underside is inclined below the projection units 20, 22 until it reaches the underside 14 of the artificial stone elements, so that a hollow space 52 with a triangular cross section is formed.

In the area shown in detail in Fig. 8, the underside of the projection units 20, 22 is designed to be partially circular, so that an essentially circular cavity 53 is formed overall and projection units 20.1, 20.2 are also present on the underside, which ensure that the laid artificial stones are kept at a distance.

Claims (1)

01) Artificial stone element (10), in particular concrete paving stone, with
- a walkable or drivable upper surface (12), - a bottom side (14) opposite the top side (12) and - circumferential side walls (16, 18, 26) present between the top (12) and the bottom (14), characterized in that - a first projection unit (20) is provided on a first side wall (16), which -- ends at the top with the top (12) of the artificial stone element, -- extends over substantially the entire width (BS) of the upper side (12) and - which has a cross-sectional height (H) at the free end that is less than 40% of the height (HS) of the artificial stone element (10), and - a second projection unit (22) is provided on a second side wall (18) opposite the first side wall (16) or on an adjacent side wall (26),
-- which is essentially one of the first projection units (20) has a corresponding geometric shape. 02) Element according to claim 1, characterized in that at least one, in particular two, spacing nubs (24) are present on the front side of the first and/or second projection unit (20), which extend essentially at right angles to the upper side (12). 35 GÜLT-2 9gDE 18 April 1996 03) Element according to claim 2, characterized in that the spacer stud units (24) extend over the entire cross-sectional height (H) of the first and/or second projection unit (20). 04) Element according to one or more of the preceding claims, characterized in that ]_0 at least one, in particular two, spacer unit(s) (28) are present on one of the two remaining side walls (26), which run essentially at right angles to the upper side (12). ]_5 05) Element according to claim 4, characterized in that the spacer stud units (28) extend essentially over the entire height (HS) of the artificial stone element (10). 06) Element according to one or more of the preceding claims, characterized in that the underside (34) of the first and/or second projection unit (20; 22) is inclined so that the cross-sectional height of the respective projection unit (20; 22) decreases linearly outwards. 07) Element according to claim 6, characterized in that the linear decrease extends over more than 60% of the height (HS) of the artificial stone element (10). 35 VALID-29gDE 18 April 1996 I \,l . : I I.!. . *:*. I'*· -3- 08) Element according to one or more of the above claims 1-5, characterized in that the underside of the projection unit has a curvature, in particular a part-circular curvature. 09) Element according to one or more of the preceding claims, characterized in that ^O the projection length (L) of the first and/or second projection unit (20) is in the range between 1 cm and 3 cm (centimetres). 10) Element according to one or more of the preceding claims, characterized in that the length (LS) and/or the width (BS) of the element (10) is in the range between 10 cm and 20 cm (centimeters). 20 25 30 35