EP3041993B1 - Concrete paving stone - Google Patents

Description

The invention relates to a molded block made of concrete according to the preamble of claim 1. Embodiments of roads with edge-shaped blocks, which are provided with a signal profiling, have long been known. According to US 2,826,128 (1958 ) concrete elements for driveways are already proposed, wherein in the respective area of a median strip and an edge strip of the road bounding transitions respective acting upon contact by vehicle wheels acting as a warning structures are installed. The entire roadway is constructed in particular of comparatively large slab concrete elements, so that the positioning of these concrete slabs between two driving surfaces requires complex foundation measures and a cornering is problematic. In addition, the concrete slabs form even with minor displacements disadvantageous abutting edges in the area of their upper-side rolling surface and special curbs are to be laid on the sides of the roadway.

In a proposal according to GB 853,557 (1957 ), a compact shaped block is proposed for the arrangement as a center or edge strip, which has on its upper side respective profiles acting in the installed position as a transverse groove profilings, so that a contact with the vehicle tires generates corresponding rolling noise. According to DE 79 03 240 U1 (1979 ) a similar anchoring plate is proposed, the However, only in the area of the roadside is to place and also has a - provided with profilings profiling.

According to DE 25 14 963 (1975 ) a Betonkammerplatte is proposed, which is formed with vertically crossing rib groups, so that respective projections and depressions form the acting as a warning profiling. Also in DE 197 15 059 A1 (1997 ) rib-like profiles are introduced into a plastic plate. For a similar solution in GB 1 498 582 (1975 ) a paving stone is proposed, in which respective longitudinal and transverse ribs are arranged so that an effective as a warning signal profiling is defined. Out DE 84 03 953.1 U1 (1984 ) is a paving stone is known, the top is provided with a spherical profiling.

According to DE 38 20 002 C2 (1988 ) and DE 72 29 362 U1 are proposed respective shaped blocks, which have substantially flat top sides, but are provided in the region of the side edges so with formations that a suitable structure for dewatering purposes is effective.

According to NL 1019009 a plate-shaped fastening element made of concrete is proposed, which on the upper side has respective groove structures inclined towards a longitudinal side, so that a corresponding flow direction is predetermined for impinging surface water. The transverse grooves are profiled so that it can also be used to define an effective when rolling vehicle wheels warning device.

According to DE 10 2004 017 534 A1 (2004 ) becomes (starting from DE 25 14 963 - 1975 ) proposed a road fastener, which is arranged in a special embodiment as an edge attachment of driving surfaces so that the upper surface portions of a groove structure each have the same level with the roadway. The profile is formed by respective transverse grooves - with respective passage openings adversely affecting the stability of the stone - so profiled that it is effective in rolling vehicle wheels only as a uniform warning signal generator. This concept is also used in a solution according to EP 1 522 630 B1 sought, with an attachment of street banquettes is provided here. The fasteners formed as special mold plates are provided on the upper side with recesses extending transversely to the longitudinal direction, approximately trough-shaped or groove-like recesses and openings arranged at intervals. These depressions for departing from the road road users act as a warning device, as a result of the vehicle tires a corresponding booming rolling noise. The depressions are comparatively small and about 10 cm wide and about 10 mm deep and have a distance of about 20 cm from each other. This is a dimensioning to be specified, which also fulfills a function for Wasserabbremsung while the attachment is not significantly weakened in its thickness and load capacity. The stability of these relatively large and unwieldy during installation plates is adversely affected by each provided for receiving Leitpflöcken passage openings. Similar floorboards are in NL 1019009 C shown, and according to JP-H11-256528 A is shown a profiled channel body for roadsides.

In US 1,671,303 A (1926 ), a wave profile provided in the region of a railroad crossing is proposed with which impacts are generated transversely to the direction of travel. In a floor plate according to US 4,701,069 (1987 ) in the edge area respective mold cavities are subsequently milled.

From a publication (" Acoustic Research ", author: M. a, Cook, Lelystad Municipality, 12.09.2007 ) corresponding noise measurements have been carried out on roadsides, which are provided with profiled edge stones. As a result, it should be noted that the molded blocks used in this case, in particular in the field of street banquet, cause a significant increase in the noise level and thus an improved warning function when leaving the roadway is reached. Also from a published essay "street banquets with safety function - precast concrete convinced" (magazine "cement and concrete", No. 52, 2012, author: Josef Speer), the use of banquet plates is described in more detail, this essentially according to the construction EP 1 522 630 B1 correspond.

The invention is concerned with the problem of creating a concrete block, which in the area of its effective as a warning profiling improved perceptible noise, thereby provided Wasserleitfunktionen are reliably met, is particularly suitable for stable installation in curved areas of lanes and a better greening of road edges possible.

The invention solves this problem with a concrete block with the features of claim 1. With regard to significant further embodiments, reference is made to the claims 2 to 20.

A concrete block is in the form of a cuboid or plate-shaped curb for laying on roadsides o. The like. Driving surfaces provided and has effective as a warning device on top of profiling. The concept according to the invention is directed to arranging a profile extending in the installation position of the molded block, starting from the first longitudinal side oriented toward the roadside toward the opposite longitudinal side, such that a guide structure defining at least two different support zones is formed.

With this previous systems improving guide structure is achieved that rolling vehicle wheels cause a varying volume of the rolling noise at a distance from the longitudinal sides and thus an "increasing" rolling noise significantly increases the warning intensity. This is an intense signal set before the unintentional leaving the road and forced the driver to countersteer.

This concept of the guide structures is executed in the simplest design so that when driving the profiling in the region of the varying support zones respective at least with the distance to the first longitudinal side changing driving noise and thereby create an at least continuously increasing volume becomes perceptible. By appropriate adaptation of the profiling it is achieved that the signal stone in the region of the conductive structure - starting from the first longitudinal side - can also cause increasing shock waves and thus their changing intensity is detected on the vehicle or on the vehicle wheels.

The molded block according to the invention is designed in the simplest design so that, starting from the first longitudinal side surface, only the adjoining upper side of the shaped block is provided with the guide structure which generates the respective rolling noises by varying rolling properties. According to the invention, the guide structure is designed as a profiling formed at least in regions in the direction of the stone width with respective blind holes. Thus, by varying the respective size, number and / or depth of the blind holes, the rolling properties for vehicle wheels can be changed so that variable "on and off" rolling noise can be detected.

It is conceivable that the blind holes are arranged so that they intersect with respective guide channels as a guide structure and so targeted "noise variants" are generated.

Based on the installation conditions required for the construction of driving surfaces according to standards - in which the different moduli of elasticity of the soil in the form of sand, loam or the like form a basis for calculation - If possible, place the block as "full surface" in such a way that an optimal pressure distribution is achieved and the risk of breakage is minimized by small forces per unit area. With the blind holes according to the invention, a bottom side completely executed executable bottom side is generated, which causes a corresponding distribution of the bearing forces. It has been shown that an increase in the breaking load on the blind-hole shaped brick - in comparison with passages having stones (eg. DE 10 2004 017 534 A ) - by 10 to 40%, in particular 30%, is possible.

The production of prototypes meant that these improvements can be detected even if the respective blind holes are formed in the area of their bottom with only a minimal wall thickness. This "closed" bottom zone on the molded block can be influenced in the production of variable numbers of blind holes so that here wall thicknesses of 0.5 mm to 50 mm, preferably 1 mm to 30 mm, are generated.

In this soil zone also a structure in the concrete - for example, influenced by the ratio of gravel aggregate and binder content - conceivable, which is effective after a shaking process as a water-permeable structure on the shaped block.

It is also conceivable to introduce into the bottom of the blind holes a minimally sized stitch opening. All this with the goal of being compact and unbreakable Stone is adapted in the range of his blind holes according to the invention to a penetration with plant growth.

It is understood that the "thin" floor structure in the blind holes before or during a laying process - more or less targeted - can also be broken and thus a permeable "break zone" is defined on the block, while ensuring the above-described laying stability remains.

Optimum use of the block is geared to laying in curved areas. For this purpose, the shaped block is provided in the region of its two broad side surfaces which define the width of the stone with complementary tooth profiles extending over the height of the stone. These can interlock in the respective laying position so that the "zipper-like" connection of the respective tooth teeth - according to the radius of curvature - can be spread. The remaining toothed connections can thereby form a sufficient stability of the stone composite and fix the shaped blocks in the installation position.

This concept of the profiling is advantageously extended by the fact that the guide structure has at least one guide channel extending in the direction of the stone width from the first longitudinal side to the second longitudinal side and intersecting with the optimized blind holes. According to the stone size is provided that the guide structure in the region of the top can also be provided with a plurality of guide channels.

Starting from the first longitudinal side of the guide structure, the guide channels starting here are shaped such that respective subregions with different channel width, channel shape and / or channel depth are introduced. It is also conceivable that the guide channels with different contour curves, for example, zig-zag, wavy, meander-shaped o. The like. Alignments run.

The optimum for the production profiling concept provides that the guide channels are aligned starting from the roadside substantially parallel first longitudinal side to this perpendicular and open out at the opposite second longitudinal sides accordingly. It is understood that with a view to the "swelling noise", the guide channels are profiled so that their warning signal with increasing distance to the running surface is also swelling loud generated. Advantageously, it is provided that the outgoing from the first longitudinal side guide channels with increasing distance to the second longitudinal side out have an increasing channel width. A conceivable combination also results if the channel depth is increased with increasing distance to the front first longitudinal side.

It has been shown that the profiled shaped block can also be formed in its upper side having the guide structure with a horizontal roller plane, and in this case respective mold projections protruding upwards over the roller plane as a warning signal generator be integrated into the profile. These profiles, which are effective as warning signals, can be further improved by virtue of the fact that the roller plane or the region of the respective form approaches has additional trough profiles. Advantageously, it is provided that in the region of the guide structure respective spherical segment-shaped elevations are provided as a molding approach.

Another variant in the design of the molded block with guide zones results according to the invention in that at the top of the block a per se known diamond profiling is provided as a "roughness structure". With this combination of leading zones and diamond profiling, an additional change in the noise development on rolling wheels is achieved in addition to the known slip resistance. In this case, the portions of the upper side acting as step and contact surface are provided with a grippy microstructure, and the channel profiles of the diamonds have a smooth surface, so that an optimal discharge of water and dirt is achieved.

Fig. 1

eine Draufsicht auf den erfindungsgemäßen Formstein aus Beton mit einer sich von der ersten Längsseite zur gegenüberliegenden Längsseite erstreckenden Profilierung,

Fig. 2

eine teilweise vergrößerte Ausschnittsdarstellung im Verbindungsbereich zweier in Einbaulage befindlicher Formsteine gemäß Fig. 1,

Fig. 3

jeweilige Schnittdarstellungen des Formsteins gemäß Fig. 1 in Teildarstellungen a bis d

Fig. 4

eine Draufsicht des Formsteins ähnlich Fig. 1 mit veränderter Profilierung,

Fig. 5

jeweilige Schnittdarstellungen des Formsteins gemäß Fig. 4 in Teildarstellungen a bis d,

Fig. 6

eine Draufsicht ähnlich Fig. 1 mit veränderter Profilierung des Formsteins,

Fig. 7

jeweilige Schnittdarstellungen des Formsteins gemäß Fig. 6 in Teildarstellungen a bis c,

Fig. 8

eine Draufsicht ähnlich Fig. 1 mit dem Formstein mit veränderter Oberflächenprofilierung,

Fig. 9

jeweilige Schnittdarstellungen des Formsteins gemäß Fig. 8 in Teildarstellungen a bis c,

Fig. 10

eine Draufsicht des Formsteins ähnlich Fig. 1 mit veränderter Profilierung im Bereich des Seitenrandes,

Fig. 11

jeweilige Schnittdarstellungen des Formsteins gemäß Fig. 10 in Detailansichten a bis c,

Fig. 12

eine Draufsicht des Formsteins ähnlich Fig. 6 mit veränderter Profilierung an den Breitseiten,

Fig. 13

jeweiligen Schnittdarstellungen des Formsteins gemäß Fig. 12 in Detaildarstellungen a und b,

Fig. 14

eine Draufsicht ähnlich Fig. 1 mit einer Rauten-Profilierung in einem Teilbereich der Oberseite des Formsteins,

Fig. 15

jeweilige Schnittdarstellungen des Formsteins gemäß Fig. 14 in Teildarstellungen a bis d,

Fig. 16

eine vergrößerte Detaildarstellung E' an der Oberseite des Formsteins gemäß Fig. 14,

Fig. 17

eine Schnittdarstellung E-E des Profils in Fig. 16,

Fig. 18

eine Anwendung erfindungsgemäßer Formsteine im Bereich eines Kreisverkehrs o. dgl. Fahrfläche,

Fig. 19

eine vergrößerte Ausschnittsdarstellung der bogenförmig verrastbaren Formsteine in einer Lage gemäß Fig. 18,

Further details and advantages of the invention will become apparent from the following description and the drawings illustrating several embodiments of the molded block according to the invention. In the drawing show:

Fig. 1

a plan view of the concrete block according to the invention with a extending from the first longitudinal side to the opposite longitudinal side profiling,

Fig. 2

a partially enlarged detail view in the connection region of two in the installed position located in accordance with stones Fig. 1 .

Fig. 3

respective sectional views of the block according to Fig. 1 in partial representations a to d

Fig. 4

a top view of the molded block similar Fig. 1 with changed profiling,

Fig. 5

respective sectional views of the block according to Fig. 4 in partial representations a to d,

Fig. 6

a top view similar Fig. 1 with altered profiling of the molded block,

Fig. 7

respective sectional views of the block according to Fig. 6 in partial representations a to c,

Fig. 8

a top view similar Fig. 1 with the molded block with modified surface profiling,

Fig. 9

respective sectional views of the block according to Fig. 8 in partial representations a to c,

Fig. 10

a top view of the molded block similar Fig. 1 with changed profiling in the area of the side edge,

Fig. 11

respective sectional views of the block according to Fig. 10 in detail views a to c,

Fig. 12

a top view of the molded block similar Fig. 6 with changed profiling on the broadsides,

Fig. 13

respective sectional views of the molded block according to Fig. 12 in detailed representations a and b,

Fig. 14

a top view similar Fig. 1 with a diamond profiling in a partial area of the upper side of the molded block,

Fig. 15

respective sectional views of the block according to Fig. 14 in partial representations a to d,

Fig. 16

an enlarged detail view E 'at the top of the block according to Fig. 14 .

Fig. 17

a sectional view EE of the profile in Fig. 16 .

Fig. 18

An application of inventive stones in the area of a roundabout o. The like.

Fig. 19

an enlarged sectional view of the arcuately lockable molded blocks in a position according to Fig. 18 .

In Fig. 1 is a generally designated 1 molded concrete block in a plan view, wherein the molded block 1 has on its upper side at least one respective transverse grooves 2 forming profiling. Such shaped blocks 1 are used as cuboid or plate-shaped signaling stones for laying on roadsides o. The like. Fig. 2 ) so that here for rolling vehicle tires R ( Fig. 5 ) a warning device is effective.

The improved concept of the warning device provides that, in the installation position of the molded block 1, the profiling extending from the first longitudinal side 3 oriented toward the roadside F 'to the opposite longitudinal side 4 is shaped such that at least two different bearing zones defining conductive structures L, L'formed become. In synopsis with the in Fig. 5 illustrated Abrollsituation a rolling vehicle wheel R is clear that this corresponding, the respective distance AR, AR 'to the longitudinal side edges 3, 4 varying support profile parts of the conductive structures L and L' detected and thus different rolling noise are effected.

Starting from the in Fig. 2 shown fitting position of the molded block 1 is clear that when driving the lead structure L, L 'respective with increasing distance AR, AR' to the first longitudinal side 3 changing driving noise of the rolling vehicle R are generated, the guide structure L, L 'in the transverse direction of the molded block 1 is at least continuously changing volumes of driving noise entails. The effect of this signal stone concept can also be changed by causing the signal stone in the region of the guide structure L, L 'starting from the first lane-side longitudinal side 3 increasing shock waves and their changing intensity is detected by the driver of the vehicle.

An intended for the optimal installation of the molded block 1 design provides that this in the region of its two with their distance the stone length SL defining opposite broad side surfaces 5, 6 in laying ( Fig. 2 ) each complementary interlocking tooth profiles 7, 8 is provided. Thus, a shaped stone acting as a signal stone 1 is provided, which forms an optimal anchoring in the installation position with sibling bricks 1, 1 'even when laying in road curves FR, FR', since the splines 7, 8 at least partially remain in their hooking position ( Fig. 2 , left side).

The concept of the molded block 1 according to the invention is - when using a corresponding molding device for production - directed that the molded block 1, starting from the first longitudinal side surface 3 only on its adjacent upper side 9 with the respective rolling noise by varying Abrolligenschaften generating Leitstruktur L, L 'provided is. It is in all of the according Fig. 1 to Fig. 13 shown embodiments that the guide structure L, L 'in the direction of the stone width SB at least partially formed with respective blind holes 10 profiling ( FIG. 6 to FIG. 9 and Fig. 12, Fig. 13 ). The essentially identical blind holes 10 can be seen from the drawings so that a respective designation of all blind holes 10 is dispensable.

The number and the respective volume of the blind holes 10 according to the invention can be adapted to the respective size of the molded block 1 and / or respective guide channels 11. With the blind holes 10, a closed bottom region 10 'is formed in a first embodiment, so that the underside U of the molded block 1 can be placed over its entire surface on a base U' designed as a base layer with a bedding ( Fig. 3 ). The execution of the bottom region 10 'is directed to a maximum stability of the molded block 1. It has been found that the invention Noise-optimized and adaptable to a greening shaped stone 1 by forming the largely closed blind holes 10 - in comparison with through holes similar DE 10 2004 017 534 A - Can absorb by 10 to 40%, in particular 30%, increased breaking load.

An adaptation to the loading conditions in the laying position is achieved by making the bottom region 10 'variable with a thickness M of 0.5 mm to 50 mm, preferably 1 mm to 30 mm. In this way, a "predetermined breaking point" can be defined, in the region of which a rooting provided for the greening of the shaped bricks 1 can "penetrate" the stone, such that with a grassy growth the road F is optically restricted to the asphalt web.

A further development of the blind-hole principle according to the invention leads to the fact that the complex properties of the as a roadway boundary and additional edge strips - especially of narrow streets (maximum width 3.00 m according to EU Directive) - suitable shaped blocks 1 are also met with sufficient stability, if in the bottom-side wall of the blind hole 10, an advantageous permeable structure for water is generated. Due to special conditions when forming the stones, these structures are easy to produce.

In this case, a bottom-side structure WL ( Fig. 7 ) in particular made water permeable so that a required for the greening of lanes planting is achieved. In the area of the blind hole bottom can also be a stitch opening WL '( Fig. 9 ), so that a vegetation is possible with unchanged laying stability.

Based on the variable design of the bottom 10 'or the wall M - in the range of 0.5 mm to 50 mm - is also conceivable here to define a "predetermined breaking surface", before laying or in the installation position as a result of pressure build-up can be opened on the stone 1 Thus, the bottom-side structure WL, WL'optimal be adapted to the penetration of plant growth and the stability of the stone 1 is maintained.

A first complex effective profiling on blind hole shaped stone 1 is in Fig. 1 illustrated, wherein the guide structure L, L 'at least one extending in the direction of the stone width SB from the first longitudinal side 3 to the second longitudinal side 4 and with the blind holes 10 intersecting guide channel 11 which extends in the manner of a known cross channel 2. This guide channel 11 is also in the embodiments of the molded block 1 according to Fig. 4 and Fig. 10 provided, so that in these embodiments, the combined effect of the linear channel contour and the radial edge regions of the blind holes 10 leads to a distinctive rolling noise. The resulting air movement in the profiling can also lead to an increasing whistling sound.

The concept of the blind holes 10 is not limited to the illustrated cylindrical shape with arcuate bag bottom 10 '. Rather, angular cross-sectional contours (not shown) of the blind hole 10 are conceivable. Likewise, the blind holes 10 may be formed with pyramidal bottom wall or be made in total as a conical or pyramidal internal profiles.

The above-described embodiment of the complex profiling in the region of the guide structure L, L 'provides, in particular, for a plurality of guide channels 11 to be formed in the region of the upper side 9 of the shaped block 1. It becomes clear that the guide channels 11 originating from the first longitudinal side 3 of the guide structure L, L 'are respective subregions with different channel widths KB, KB' (FIG. Fig. 1 . Fig. 4 ) or channel depth KT ( Fig. 5c ) exhibit. The guide channels 11 are designed so that they are formed starting from the roadside F 'substantially parallel first longitudinal side 3 perpendicular to this and the guide channels 11 open out at the opposite second longitudinal side 4 in the region of Randfase RF.

From the respective plan views of the molded block 1 according to Fig. 1 . Fig. 4 . Fig. 10 It is clear that the outgoing from the first longitudinal side 3 guide channels 11 with increasing distance from the second longitudinal side 4 towards a magnifying channel width KB have. This enlargement also relates to the channel depth KT, wherein this increases continuously in the manner of a gradient starting from the first longitudinal side 3 to the second longitudinal side 4 (KT, FIG. Fig. 11 ).

From the respective side views or sectional views in Fig. 5 . Fig. 7 . Fig. 9 . Fig. 11 and Fig. 13 It is clear that the shaped block 1 defines a horizontal roller plane in the area of its upper side 9 having the guide structure L, L ' (Roller plane according to line illustration G). The warning signal effect of the molded block 1 can be varied here in that, in particular, in the conductive structure L 'upwardly projecting over the roller plane G form approaches E, E' are effective. From the sectional views according to Fig. 3a, b and Fig. 5a, b It is clear that the roller plane G or the respective region of the form approaches E is provided with trough profiles 12. From the designs according to Fig. 5c and d such as Fig. 7b and c It is clear that the guide structure L'has respective spherical segment-shaped elevations 13 as a shaping projection E '.

From a synopsis of FIGS. 8 and 9 the design of the edge bevel RF becomes clear (this is also in Fig. 1 . Fig. 4 and Fig. 6 shown), with the inclination angles W and W 'in Fig. 9b and 9c the inclination of the edge bevel RF, RF 'in the direction of the stone length SL ( Fig. 1 ) becomes clear.

In Fig. 14 an embodiment of the molded block 1 "is shown, this with the basic variant according to Fig. 1 is comparable. This structurally extended embodiment of the molded block 1 "is characterized in that in the region of one of its conductive structures L, L 'an additional structure L''' is provided, which detects essentially only an upper layer of the top 9 and thus when driving or entering a allows additional variation of noise or chute characteristics.

The in its cross-sectional design ( Fig. 15 a to d ) substantially unchanged molded block 1 "is in a partial region of the upper side 9 with the additional structure L '''in the form of a diamond profiling RP ( Fig. 16 ) Mistake. Although such diamond profiles RP are known per se, but is a combination with a the roll or. Driving noise on roadsides varying shape stone 1 "according to the invention not previously provided.

From the enlarged detail in FIGS. 16 and 17 It becomes clear that the diamond profiling RP in the region of the upper side 9 with aggregate grains or the like embedded in the cement paste of the concrete block forms a roughness layer RL. This roughness RL differs significantly from the areas of respective drainage grooves ER, in which a smooth compared to the rough top 9 guide surface LF is provided. These guide surfaces LF can also be provided in drainage grooves ER with variable depths 18, 18 '.

With this "roughness" concept of the molded block 1 "is an optimal design of work surfaces, such as transshipment points, washing areas, storage areas, troughs or the like traffic areas, possible .. The roughness RL forming additives can be adapted to these particular applications, so that In each case a sufficient abrasion resistance is ensured and a disadvantageous polishing of the upper side 9 by frictional loads can be largely avoided .. The drainage grooves LR protected by the abrasion stress through the deep layer 18, 18 'remain untouched during the entire service life, so that thus the smooth guide surfaces LF can always act as a water and dirt-dissipating structure.

It has been found that the formation of the molded block 1 "with the diamond profiling RP also forms an acoustically perceptible rolling structure, so that the above-described Use of such shaped blocks 1 "as curbs for the limitation of lanes is also advantageously possible.

In Fig. 18 and Fig. 19 is a further embodiment shown in application of the generally designated 1 shaped blocks. As can be seen, these shaped stones 1, which are only shown schematically in a laying position, are arranged in a structure forming a roundabout or the like, with the surface profiling according to the invention, which is not illustrated in more detail. It is conceivable that an outer region AD of this running surface is produced in the form of an asphalt surface, as a poured concrete surface or in the form of a surface made of paving stones, each known per se. With the novel design of an annular structure KV from the molded blocks 1 according to the invention - with at least one of the in the above-described representations according to Fig. 1 to Fig. 17 illustrated embodiment of the surface structure - is achieved that for a moving in the roundabout vehicle (especially in a multi-lane roundabout) each holding a track or leaving a lane by the corresponding acoustic signal for the driver is easier to see.

In Fig. 19 the system is illustrated in enlarged detail, it being also conceivable to use commercially available gutters 19, which have a structured surface in a uniform or multi-stage design. Starting from known stone shapes, the shaped blocks 1 in the standard sizes 16 mm × 16 mm × 14 mm or 16 mm × 24 mm × 14 mm have long been similar The new version of the stones 1 is then additionally structured on the surface in order to provide a complete "signal stone".

Out Fig. 18 the special contour shape of the stones 19 for the formation of the arcuate or circular portion of a roundabout KV clearly. Assuming that when cornering with heavy traffic large forces are to be added to the stones 19 - in addition to the longitudinal edge toothing 7, 8 - also a frontal toothing 7 '''is provided. In addition, these stones 19 are then still with respective Keilformsteinen KS ( Fig. 19a ) combined.

These can with appropriate wedge angles KW - for example, stepped at 2.5 °; 5 °; 10 ° and 15 ° - are provided and laid in the direction of arrow PK so that in the region of a spread between the radially laid stones 19 SP forming an additional "gearing" in the region of the spline KV, KV 'and the teeth 7, 8 and / or 7 '' 'is reached. Thus, the stability of the arcuate laying system KV is improved overall by the wedge or trapezoidal stones KS.

Such channel stones 19 are installed in per se known application on the edge next to a curb or in residential roads, also the application is provided centrally in a lane. It is understood that in a pure paving stone lane the rectangular gutter stones 19 are to be provided with a surface profiling changed in comparison with the surrounding concrete blocks - in accordance with the intended roughness concept.

Claims (20)

1. Concrete paving stone, which is provided in the form of a cuboid signal stone for being laid at road edges or on similar travel surfaces (F), the paving stone (1) comprising a profile, on the upper face (9) thereof, that acts as a warning mechanism and forms at least respective transverse grooves (2), characterised in that the profile, which, in the installation position of the paving stone (1), extends from the first longitudinal side (3) oriented towards the road edge (F') as far as the opposite longitudinal side (4), comprises blind holes (10), at least in regions, and interacts therewith.
2. Paving stone according to claim 1, characterised in that the profile comprising the blind holes (10) is designed as a guide structure (L, L') defining at least two different bearing zones such that vehicle wheels (R) rolling on the guide structure (L, L') cause a rolling noise that varies depending on the distance of said wheels from the longitudinal sides (3, 4).
3. Paving stone according to claim 2, characterised in that, when travelling over the guide structure (L, L'), vehicle noises from a rolling vehicle wheel (R), which noises change as the distance from the first longitudinal side (3) increases, can be produced in the region of the varying bearing zones, such that the guide structure (L, L') causes at least continuously changing levels of the vehicle noise in the transverse direction of the paving stone (1).
4. Paving stone according to either claim 2 or claim 3, characterised in that the guide structure (L, L') is formed by means of a profile that intersects, at least in regions, with blind holes (10) in the direction of the stone width (SB).
5. Paving stone according to any of claims 2 to 4, characterised in that the guide structure (L, L') comprises at least one guide duct (11) that extends in the direction of the stone width (SB) from the first longitudinal side (3) as far as the second longitudinal side (4) and intersects with the blind holes (10).
6. Paving stone according to any of claims 1 to 5, characterised in that the blind holes (10) are formed so as to have a thickness (M) of from approximately 1 mm to 30 mm, in particular 0.5 to 50 mm, in the region of the base (10') thereof that can be placed on the support (U').
7. Paving stone according to any of claims 1 to 6, characterised in that, in comparison with a stone comprising through-openings, said paving stone has a breaking load that is increased by 10 to 40%, in particular 30%, on account of the largely closed blind holes (10).
8. Paving stone according to any of claims 1 to 7, characterised in that a number of the blind holes (10) have a structure (WL) that is permeable at least to water in the region of the corresponding base (10') thereof.
9. Paving stone according to claim 8, characterised in that a notch (WL') is formed as the permeable structure.
10. Paving stone according to either claim 8 or claim 9, characterised in that the structure (WL, WL') on the base side defines a predetermined breaking zone that can be detached from the base (10') when the stone (1) is laid.
11. Paving stone according to any of claims 8 to 10, characterised in that the structure (WL, WL') on the base side can be adapted to penetration as a result of plant growth.
12. Paving stone according to any of claims 1 to 11, characterised in that the paving stone (1) is provided, at least in the region of the two opposing wide-side surfaces (5, 6) thereof that define the stone length (SL) by means of the spacing therebetween, with serrated profiles (7, 8) that complement one another in the laid position.
13. Paving stone according to any of claims 1 to 12, characterised in that, proceeding from the first longitudinal side surface (3), only the adjoining upper face (9) of the paving stone (1) is provided with the guide structure (L, L') that produces the corresponding rolling noises on account of varying rolling properties.
14. Paving stone according to any of claims 1 to 13, characterised in that the guide structure (L, L') is provided with a plurality of guide ducts (11) in the region of the upper face (9) of the stone (1), and the guide ducts (11), which proceed from the first longitudinal side (3) of the guide structure (L), each comprise sub-regions having a varying duct width (KB, KB') and or duct depth (KT).
15. Paving stone according to any of claims 1 to 14, characterised in that the guide ducts (11), proceeding from the first longitudinal side (3) that is substantially parallel to the road edge (F'), extend perpendicularly to said side and emerge on the opposing, second longitudinal side (4), said guide ducts (11), which proceed from the first longitudinal side (3), having a duct width (KB) that increases as the distance from the second longitudinal side (4) increases, and the duct depth (KT) increasing as the distance from the front, first longitudinal side (3) increases.
16. Paving stone according to any of claims 1 to 15, characterised in that it defines, in the region of the upper face (9) thereof comprising the guide structure (L, L'), a horizontal rolling plane (G), and shaped projections (E, E') that project upwards above the rolling plane (G) are provided, the rolling plane (G) or the region of the shaped projections (E) comprising depression profiles (12), and spherical-segment-shaped protuberances (13) being provided as the shaped projection (E') in the region of the guide structure (L').
17. Paving stone according to any of claims 1 to 16, characterised in that the paving stone (1 ") is provided, in the region of one the guide structures (L, L') thereof, with an additional structure (L''') that surrounds at least one sub-region of the upper face (9) and has a diamond-shaped profile (RP).
18. Paving stone according to claim 17, characterised in that the diamond-shaped profile (RP) comprises a rough portion (RL) in the region of the upper face (9) having aggregate elements embedded in the cement paste.
19. Paving stone according to either claim 17 or claim 18, characterised in that the diamond-shaped profile (RP) forms, in the region of the drainage grooves (ER) thereof, a guide surface (LF) that is smooth in comparison with the rough upper face (9).
20. Stabilised assembly for being laid in the region of a structure forming a roundabout (KV) or a similar curved surface, comprising a paving stone according to any of claims 1 to 19 and a wedge-shaped paving stone (KS), complete serration being formed on the paving stone by means of a serrated profile (7''').

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