EP0383691A1 - Composition of materials without a binder for self-stabilised sporting floors, and sporting floor so realised - Google Patents

Composition of materials without a binder for self-stabilised sporting floors, and sporting floor so realised Download PDF

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Publication number
EP0383691A1
EP0383691A1 EP90400421A EP90400421A EP0383691A1 EP 0383691 A1 EP0383691 A1 EP 0383691A1 EP 90400421 A EP90400421 A EP 90400421A EP 90400421 A EP90400421 A EP 90400421A EP 0383691 A1 EP0383691 A1 EP 0383691A1
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composition according
particle size
composition
self
fibers
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German (de)
French (fr)
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EP0383691B1 (en
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Jacques Delaume
Jakobus Stans
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TERCHARNOR
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TERCHARNOR
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/06—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003
    • E01C13/065—Pavings made in situ, e.g. for sand grounds, clay courts E01C13/003 at least one in situ layer consisting of or including bitumen, rubber or plastics

Definitions

  • the invention relates to a composition of materials intended for the manufacture of sports floors.
  • granular mineral materials are already used which have the property of naturally stabilizing, that is to say of acquiring, without the need to incorporate a binder, a compactness. sufficient to allow the practice of most sports and to prevent them from deteriorating substantially under the action of bad weather.
  • This property results, for the product used, from the choice of a determined particle size composition.
  • the particle size curve of the material used is such that the smallest particles fill, without completely obstructing them, the interstices between the largest particles. This results after installation, rolling (mechanical process) and natural compaction of the material, a cohesion such that the coating subsequently resists the forces exerted on the surface by athletes and the erosion of bad weather.
  • FERROLITE red shales (vitrified shales) from burnt mining heaps, after crushing and sieving to achieve the desired particle size.
  • Such products are distinguished from other natural grain materials, such as sand, whose particle size and geometry (absence of sharp angles) do not allow to obtain sufficient cohesion for the practice of most sports, so that their use requires the presence of binders (bitumen, cement, organic binders).
  • synthetic coverings for example artificial turf which have the disadvantage of being very expensive and which, moreover, must be laid on a very regular underlay.
  • self-stabilized granular mineral materials have the advantage of being both sufficiently compact and yet permeable to water, easy to use and maintain while being inexpensive .
  • they when compared to natural grass or high-end synthetic materials, they have the disadvantage of having less flexibility and elasticity. This can result in less comfort for the user, or even be the cause of various traumas for athletes using these surfaces.
  • the object of the invention is to remedy this drawback and, therefore, to provide a composition of materials for the manufacture of sports floors which has the advantages of self-stabilized coatings while having a flexibility which brings it close to synthetic materials. high-end.
  • the invention proposes that, in a granular mineral material having a particle size curve capable of giving it self-stabilizing properties, angular particles of a rubbery material are incorporated on the one hand, and on the other hand share of free fibers, homogeneously dispersed throughout the material.
  • the invention provides a composition of materials for sports floors, self-stabilized without binder, comprising a mineral material in angular grains whose particle size distribution allows self-stabilization, characterized in that it contains from 5 to 30% by volume of a rubbery material in angular grains and from 1 to 5% by volume of free fibers, the rest being mainly constituted by this mineral material in which this rubbery material and these fibers are homogeneously dispersed.
  • the mineral grain material can in particular be prepared, as is already known, from vitrified shales (red shales) extracted from the coal heaps which have burned. Vitrified shales have the advantage of not being porous and, therefore, of not being liable to burst under the action of the gel.
  • grain materials preferably non-porous, can also be used, for example sandstone.
  • the rubbery material incorporated into the product according to the invention can consist of any elastomeric product having elastic properties.
  • recycled products from the rubber industry are used in particular, and in particular fragments of used tires with irregular contours.
  • the irregular rubbery aggregates (natural or artificial) have an average dimension (comparable to a diameter) of the order of 1 to 4 mm and are used at a rate of 5 to 30% by volume (which corresponds to approximately 20 200 kg per cubic meter of finished product in the case of crushed red shale).
  • the particle size of the rubber products used is included in the particle size range of the mineral material.
  • this particle size is such that these products replace a corresponding particle size fraction of the base material, so that the particle size curve of the whole is not or is only slightly modified.
  • the particle size of the rubbery particles is located in the middle part of the particle size of the granular material; thus there are neither too small particles likely to deteriorate the permeability, nor too large particles which would reduce the capacity of self-stabilization.
  • Free fibers can be organic, preferably synthetic (polypropylene, nylon, etc.) or non-organic, in particular mineral (glass fibers for example). Preferably, they have a diameter of between 0.1 and 1 mm, a length of a few centimeters to 10 cm and are used in a volume proportion of 1 to 5% (which corresponds approximately to 1 to 10 kg per cubic meter of finished product in the case of crushed red shale).
  • composition of materials according to the invention is produced by simple mixing of its constituents: mineral material, rubber aggregates and fibers.
  • red shales from mining heaps from a crushing plant (preferably double) and screening which has given them an appropriate particle size and irregular geometry, are stored in a hopper, from which they are dumped on a conveyor with a constant flow. At the end of this conveyor, they fall into a vertical tube.
  • a first pipe connected to a rubber aggregate storage tank and comprising a valve which allows the introduction into the tube of a determined and constant flow of aggregates.
  • a second pipe is also connected to the tube, connected to a second tank containing the fibers and from which they are regularly driven by blowing compressed air.
  • a homogeneous mixture of shales, rubber aggregates and fibers is collected.
  • the particle size distribution of the granular material and of the rubber aggregates is in practice suitable for respecting the time zones recommended in France by the Central Laboratory for Sports Soils. Preferably, it is chosen in accordance with German standards DIN 18035 which are the benchmark in Europe for sports floors.
  • the product obtained is directly ready for the use to be set up in the form of a screed a few centimeters thick (in practice from 4 to 8 cm approximately), on a ground suitably prepared by conventional works of drainage and earthworks. Compactness and cohesion are obtained by simple rolling.
  • the screed can be used as is for sports. It can also be covered with a synthetic carpet, such as artificial grass.
  • An advantage of the product according to the invention lies in its homogeneity which gives it uniform flexibility. It is thus distinguished in particular from certain existing coatings which comprise a layer of aggregates linked by resimices and for which the variations in thickness of this layer result in irregularities in surface flexibility, which are the cause of trauma known to athletes. (breakdowns, tendonitis, backache).
  • both the granular material and the rubber aggregates have an irregular shape with sharp angles, promotes intermolecular tensions while preserving the permeability of the whole.
  • composition thus obtained was used for the making according to a conventional process of a screed 5 cm thick, which had an improved flexibility of 40% compared to a similar known screed, without rubber or fibers, manufactured with shales of the same particle size.
  • the water retention is for example 10 to 15%.
  • the intermolecular tensions induced by the film of water which coats mineral grains and rubbery aggregates favor the stabilization of their mixture with the fibers.
  • the product according to the invention is stable, does not disintegrate, has good resistance in winter and allows very intensive use of sports flooring for lifetimes at least comparable to that of conventional self-stabilized floors.
  • the fibers indeed reinforce the homogeneity and avoid the surface stabilization ruptures, due to bad weather and especially to the effect of the horizontal shearing forces generated by the use by the sportsmen.
  • the water permeability is excellent and the screed has good resistance to clogging.

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

Composition of materials for sports floors, self-stabilised without binder, comprising an inorganic material consisting of angular particles whose particle size distribution permits self-stabilisation, characterised in that it contains from 5 to 30 % by volume of an angular particulate rubbery material and from 1 to 5 % by volume of free fibres, the remainder consisting chiefly of this inorganic material in which this rubbery material and these fibres are dispersed homogeneously.

Description

L'invention concerne une composition de matières destinée à la fabrication de sols sportifs.The invention relates to a composition of materials intended for the manufacture of sports floors.

Pour le revetement des terrains de sports, on utilise déjà des matériaux minéraux granulaires qui ont la propriété de se stabiliser naturellement, c'est-à-dire d'acquérir, sans qu'il soit nécessaire d'y incorporer un liant, une compacité suffisante pour permettre la pratique de la plupart des sports et pour leur éviter ensuite de se dégrader substantiellement sous l'action des intempéries. Cette propriété résulte, pour le produit mis en oeuvre, du choix d'une composition granulométrique déterminée. En pratique, la courbe granulométrique du matériau utilisé est telle que les plus petites particules remplissent, sans les obstruer complètement, les interstices compris entre les plus grosses particules. Il en résulte après mise en place, roulage (processus mécanique) et tassement naturel du matériau, une cohésion telle que le revêtement résiste par la suite aux efforts exercés en surface par les sportifs et à l'érosion des intempéries.For the coating of sports grounds, granular mineral materials are already used which have the property of naturally stabilizing, that is to say of acquiring, without the need to incorporate a binder, a compactness. sufficient to allow the practice of most sports and to prevent them from deteriorating substantially under the action of bad weather. This property results, for the product used, from the choice of a determined particle size composition. In practice, the particle size curve of the material used is such that the smallest particles fill, without completely obstructing them, the interstices between the largest particles. This results after installation, rolling (mechanical process) and natural compaction of the material, a cohesion such that the coating subsequently resists the forces exerted on the surface by athletes and the erosion of bad weather.

Un exemple d'un tel matériau susceptible de se stabiliser naturellement est le produit commercialisé sous la marque "FERROLITE", qui est fabriqué à partir des schistes rouges (schistes vitrifiés) des terrils miniers brûlés, après concassage et tamisage pour réaliser la granulométrie voulue.An example of such a material capable of stabilizing naturally is the product marketed under the brand name "FERROLITE", which is made from red shales (vitrified shales) from burnt mining heaps, after crushing and sieving to achieve the desired particle size.

De tels produits se distinguent des autres matières en grains naturelles, telles que le sable, dont la granulométrie et la géométrie (absence d'angles vifs) ne permettent pas d'obtenir une cohésion suffisante pour la pratique de la plupart des sports, si bien que leur emploi nécessite la présence de liants (bitume, ciment, liants organiques).Such products are distinguished from other natural grain materials, such as sand, whose particle size and geometry (absence of sharp angles) do not allow to obtain sufficient cohesion for the practice of most sports, so that their use requires the presence of binders (bitumen, cement, organic binders).

On utilise aussi pour la fabrication des sols sportifs, des revêtements en matières synthétiques (par exemple gazons artificiels) qui ont l'inconvénient d'être très coûteux et qui, de plus, doivent être posés sur une sous-couche très regulière.Also used for the manufacture of sports floors, synthetic coverings (for example artificial turf) which have the disadvantage of being very expensive and which, moreover, must be laid on a very regular underlay.

En résumé, par rapport aux autres produits existants, les matériaux minéraux granulaires auto-­stabilisés ont l'avantage d'être à la fois suffisamment compacts et pourtant perméables à l'eau, faciles à mettre en oeuvre et à entretenir tout en étant peu coûteux. Toutefois, si on les compare à l'herbe naturelle ou aux matériaux synthétiques de haut de gamme, ils ont l'incon­vénient de posséder une souplesse et une élasticité moindres. Ceci peut se traduire par un moindre confort pour l'usager, voire même être la cause de divers traumatismes pour les sportifs utilisant ces surfaces.In summary, compared to other existing products, self-stabilized granular mineral materials have the advantage of being both sufficiently compact and yet permeable to water, easy to use and maintain while being inexpensive . However, when compared to natural grass or high-end synthetic materials, they have the disadvantage of having less flexibility and elasticity. This can result in less comfort for the user, or even be the cause of various traumas for athletes using these surfaces.

L'objet de l'invention est de remédier à cet inconvénient et, par conséquent, de proposer une composi­tion de matériaux pour la fabrication de sols sportifs qui possède les avantages des revêtements auto-stabilisés tout en ayant une souplesse qui la rapproche des matériaux synthétiques de haut de gamme.The object of the invention is to remedy this drawback and, therefore, to provide a composition of materials for the manufacture of sports floors which has the advantages of self-stabilized coatings while having a flexibility which brings it close to synthetic materials. high-end.

A cet effet, l'invention propose que, à un matériau minéral en grains possédant une courbe granulomé­trique susceptible de lui conférer des propriétés d'auto-­stabilisation, on incorpore d'une part des particules anguleuses d'un matériau caoutchouteux, d'autre part des fibres libres, dispersées de manière homogène dans l'ensemble du matériau.To this end, the invention proposes that, in a granular mineral material having a particle size curve capable of giving it self-stabilizing properties, angular particles of a rubbery material are incorporated on the one hand, and on the other hand share of free fibers, homogeneously dispersed throughout the material.

Plus précisément, l'invention propose une composition de matières pour sols sportifs, auto-stabilisés sans liant, comportant un matériau minéral en grains anguleux dont la répartition granulométrique permet l'auto-­stabilisation, caractérisée par le fait qu'elle contient de 5 à 30 % en volume d'un matériau caoutchouteux en grains anguleux et de 1 à 5 % en volume de fibres libres, le reste étant principalement constitué par ce matériau minéral dans lequel ce matériau caoutchouteux et ces fibres sont dispersés de façon homogène.More specifically, the invention provides a composition of materials for sports floors, self-stabilized without binder, comprising a mineral material in angular grains whose particle size distribution allows self-stabilization, characterized in that it contains from 5 to 30% by volume of a rubbery material in angular grains and from 1 to 5% by volume of free fibers, the rest being mainly constituted by this mineral material in which this rubbery material and these fibers are homogeneously dispersed.

Le matériau minéral en grains peut notamment être préparé, comme il est déjà connu, à partir de schistes vitrifiés (schistes rouges) extraits des terrils de charbon qui ont brûlé. Les schistes vitrifiés ont l'avantage de ne pas être poreux et, par conséquent, de ne pas être susceptibles d'éclater sous l'action du gel.The mineral grain material can in particular be prepared, as is already known, from vitrified shales (red shales) extracted from the coal heaps which have burned. Vitrified shales have the advantage of not being porous and, therefore, of not being liable to burst under the action of the gel.

D'autres matériaux en grains, de préférence non poreux peuvent également être utilisés, par exemple des grès.Other grain materials, preferably non-porous, can also be used, for example sandstone.

Le matériau caoutchouteux incorporé au produit selon l'invention peut être constitué par tout produit élastomèrique possédant des propriétés élastiques. Pour des raisons de prix de revient, on utilise plus particulière­ment des produits recyclés de l'industrie du caoutchouc et notamment des fragments de pneus usagés, aux contours irréguliers.The rubbery material incorporated into the product according to the invention can consist of any elastomeric product having elastic properties. For cost reasons, recycled products from the rubber industry are used in particular, and in particular fragments of used tires with irregular contours.

De préférence, les granulats caoutchouteux irréguliers (naturels ou artificiels) ont une dimension moyenne (assimilable à un diamètre) de l'ordre de 1 à 4 mm et sont utilisés à raison de 5 à 30 % en volume (ce qui correspond à environ 20 à 200 kg par mètre cube de produit fini dans le cas de schistes rouges concassés).Preferably, the irregular rubbery aggregates (natural or artificial) have an average dimension (comparable to a diameter) of the order of 1 to 4 mm and are used at a rate of 5 to 30% by volume (which corresponds to approximately 20 200 kg per cubic meter of finished product in the case of crushed red shale).

Il est souhaitable que la granulométrie des produits caoutchouteux mis en oeuvre soit incluse dans la plage granulométrique du matériau minéral. De préférence cette granulométrie est telle que ces produits se substi­tuent à une fraction granulométrique correspondante du matériau de base, de manière que la courbe granulométrique de l'ensemble ne soit pas ou ne soit que peu modifiée. De manière préférée, la granulométrie des particules caoutcho­uteuses se situe dans la partie médiane de la granulométrie du matériau granulaire ; ainsi il n'y a ni des particules trop petites susceptibles de détériorer la perméabilité, ni des particules trop grosses qui réduiraient la capacité d'auto-stabilisation.It is desirable that the particle size of the rubber products used is included in the particle size range of the mineral material. Preferably, this particle size is such that these products replace a corresponding particle size fraction of the base material, so that the particle size curve of the whole is not or is only slightly modified. Preferably, the particle size of the rubbery particles is located in the middle part of the particle size of the granular material; thus there are neither too small particles likely to deteriorate the permeability, nor too large particles which would reduce the capacity of self-stabilization.

Les fibres libres peuvent être de nature organique, de préférence synthétique (polypropylène, nylon, etc...) ou non organique, notamment minérale (fibres de verre par exemple). De préférence, elles ont un diamètre compris entre 0,1 et 1 mm, une longueur de quelques centimètres à 10 cm et sont employées dans une proportion volumique de 1 à 5 % (ce qui correspond approximativement à 1 à 10 kg par mètre cube de produit fini dans le cas de schistes rouges concassés).Free fibers can be organic, preferably synthetic (polypropylene, nylon, etc.) or non-organic, in particular mineral (glass fibers for example). Preferably, they have a diameter of between 0.1 and 1 mm, a length of a few centimeters to 10 cm and are used in a volume proportion of 1 to 5% (which corresponds approximately to 1 to 10 kg per cubic meter of finished product in the case of crushed red shale).

La composition de matières selon l'invention est fabriquée par simple mélange de ses constituants : matériau minéral, granulats de caoutchouc et fibres.The composition of materials according to the invention is produced by simple mixing of its constituents: mineral material, rubber aggregates and fibers.

Par exemple, des schistes rouges de terrils miniers, provenant d'une installation de concassage (de préférence double) et de criblage qui leur a conféré une granulométrie et une géométrie irrégulière appropriées, sont stockés dans une trémie, à partir de laquelle ils sont déversés sur un convoyeur avec un débit constant. A l'extrémité de ce convoyeur, ils tombent dans un tube vertical. Sur ce tube est raccordée une première canalisa­tion reliée à un réservoir de stockage de granulats de caoutchouc et comportant une vanne qui permet l'introduc­tion dans le tube d'un débit déterminé et constant de granulats. Sur le tube est également raccordée une seconde canalisation reliée à un second réservoir contenant les fibres et à partir duquel on les entraîne régulièrement par soufflage d'air comprimé. A la base du tube vertical, on recueille un mélange homogène de schistes, de granulats de caoutchouc et de fibres.For example, red shales from mining heaps, from a crushing plant (preferably double) and screening which has given them an appropriate particle size and irregular geometry, are stored in a hopper, from which they are dumped on a conveyor with a constant flow. At the end of this conveyor, they fall into a vertical tube. To this tube is connected a first pipe connected to a rubber aggregate storage tank and comprising a valve which allows the introduction into the tube of a determined and constant flow of aggregates. A second pipe is also connected to the tube, connected to a second tank containing the fibers and from which they are regularly driven by blowing compressed air. At the base of the vertical tube, a homogeneous mixture of shales, rubber aggregates and fibers is collected.

La distribution granulométrique du matériau granulaire et des granulats caoutchouteux est en pratique propre à respecter les fuseaux préconisés en France par le Laboratoire Central des sols Sportifs. De préférence, elle est choisie conforme aux normes allemandes DIN 18035 qui constituent la référence en Europe en matière de sols sportifs.The particle size distribution of the granular material and of the rubber aggregates is in practice suitable for respecting the time zones recommended in France by the Central Laboratory for Sports Soils. Preferably, it is chosen in accordance with German standards DIN 18035 which are the benchmark in Europe for sports floors.

Le produit obtenu est directement prêt à l'emploi pour être mis en place sous forme d'une chape de quelques centimètres d'épaisseur (en pratique de 4 à 8 cm environ), sur un terrain convenablement préparé par des travaux classiques de drainage et de terrassement. La compacité et la cohésion sont obtenues par simple roulage. La chape peut être utilisée telle quelle pour la pratique des sports. Elle peut aussi être revêtue d'un tapis synthétique, tel qu'un gazon artificiel.The product obtained is directly ready for the use to be set up in the form of a screed a few centimeters thick (in practice from 4 to 8 cm approximately), on a ground suitably prepared by conventional works of drainage and earthworks. Compactness and cohesion are obtained by simple rolling. The screed can be used as is for sports. It can also be covered with a synthetic carpet, such as artificial grass.

Un avantage du produit selon l'invention réside dans son homogénéité qui lui confère une souplesse uniforme. Il se distingue ainsi en particulier de certains revêtements existants qui comportent une couche de granulats liés par des résimes et pour lesquels les variations d'épaisseur de cette couche se traduisent par des irrégularités de souplesse en surface, qui sont la cause de traumatismes connus des sportifs (claquages, tendinites, mal au dos).An advantage of the product according to the invention lies in its homogeneity which gives it uniform flexibility. It is thus distinguished in particular from certain existing coatings which comprise a layer of aggregates linked by resimices and for which the variations in thickness of this layer result in irregularities in surface flexibility, which are the cause of trauma known to athletes. (breakdowns, tendonitis, backache).

Le fait que, aussi bien le matériau granulaire, que les granulats caoutchouteux aient une forme irrégulière avec des angles vifs, favorise les tensions intermolécu­laires tout en préservant la perméabilité de l'ensemble.The fact that both the granular material and the rubber aggregates have an irregular shape with sharp angles, promotes intermolecular tensions while preserving the permeability of the whole.

Par rapport aux produits auto-stabilisés similaires connus ne contenant pas de caoutchouc, on observe une amélioration importante de la souplesse et, par conséquent, du confort.Compared to similar self-stabilizing known products not containing rubber, there is a significant improvement in flexibility and, therefore, comfort.

A titre d'exemple, à un produit auto-stabilisé à base de schistes rouges de terrils de granulométrie 0 à 3 mm, on a incorporé :
- d'une part 15 % en volume de granulats anguleux de caoutchouc recyclé préparés à partir de vieux pneus et ayant une granulométrie de 1 à 4 mm,
- d'autre part, 3 kg par mètre cube de fibres de nylon ayant un diamètre de 0,4 mm et une longueur de 5 à 6 cm.By way of example, in a self-stabilized product based on red shales from heaps of grain size 0 to 3 mm, the following were incorporated:
- on the one hand, 15% by volume of angular aggregates of recycled rubber prepared from old tires and having a particle size of 1 to 4 mm,
- on the other hand, 3 kg per cubic meter of nylon fibers having a diameter of 0.4 mm and a length of 5 to 6 cm.

La composition ainsi obtenue a été employée à la confection selon un processus classique d'une chape de 5 cm d'épaisseur, qui possédait une souplesse améliorée de 40 % par rapport à une chape similaire connue, sans caoutchouc ni fibres, fabriquée avec des schistes de même granulométrie.The composition thus obtained was used for the making according to a conventional process of a screed 5 cm thick, which had an improved flexibility of 40% compared to a similar known screed, without rubber or fibers, manufactured with shales of the same particle size.

La rétention d'eau est par exemple de 10 à 15 %. Les tensions intermoléculaires induites par la pellicule d'eau qui enrobe grains minéraux et granulats caoutchouteux favorisent la stabilisation de leur mélange avec les fibres.The water retention is for example 10 to 15%. The intermolecular tensions induced by the film of water which coats mineral grains and rubbery aggregates favor the stabilization of their mixture with the fibers.

Des mesures du module K de déformation du sol, effectuées sur des plaques d'essais compactées mécanique­ment, de 3,25 m2 de surface sur 5 cm d'épaisseur, ont conduit à des valeurs de l'ordre de 1,20 au lieu des valeurs de 1,60 environ obtenues pour le produit classique sans caoutchouc ni fibres.Measurements of the soil deformation module K, carried out on mechanically compacted test plates, with a surface area of 3.25 m2 and a thickness of 5 cm, led to values of the order of 1.20 instead of the values of around 1.60 obtained for the classic product without rubber or fibers.

Le produit selon l'invention est stable, ne se désagrège pas, a une bonne tenue en période hivernale et permet un emploi du sol sportif très intensif pour des durées de vie au moins comparables à celles des sols auto-­stabilisés classiques. Les fibres renforcent en effet l'homogénéité et évite les ruptures de stabilisation superficielles, dues aux intempéries et surtout à l'effet des efforts de cisaillement horizontaux générés par l'utilisation par les sportifs. La perméabilité à l'eau est excellente et la chape a une bonne résistance au colmatage.The product according to the invention is stable, does not disintegrate, has good resistance in winter and allows very intensive use of sports flooring for lifetimes at least comparable to that of conventional self-stabilized floors. The fibers indeed reinforce the homogeneity and avoid the surface stabilization ruptures, due to bad weather and especially to the effect of the horizontal shearing forces generated by the use by the sportsmen. The water permeability is excellent and the screed has good resistance to clogging.

Claims (11)

1. Composition de matières pour sols sportifs, auto-stabilisés sans liant, comportant un matériau minéral en grains anguleux dont la répartition granulométrique permet l'auto-stabilisation, caractérisée par le fait qu'elle contient de 5 à 30 % en volume d'un matériau caout­chouteux en grains anguleux et de 1 à 5 % en volume de fibres libres, le reste étant principalement constitué par ce matériau minéral dans lequel ce matériau caoutchouteux et ces fibres sont dispersés de façon homogène.1. Composition of materials for sports floors, self-stabilized without binder, comprising a mineral material in angular grains whose particle size distribution allows self-stabilization, characterized in that it contains from 5 to 30% by volume of a rubbery material in angular grains and from 1 to 5% by volume of free fibers, the remainder being mainly constituted by this mineral material in which this rubbery material and these fibers are homogeneously dispersed. 2. Composition selon la revendication 1, caractérisée par le fait que les grains anguleux de matériau caoutchouteux sont constitués par des produits recyclés de l'industrie du caoutchouc, tels que des particules de vieux pneus.2. Composition according to claim 1, characterized in that the angular grains of rubbery material consist of recycled products from the rubber industry, such as particles of old tires. 3. Composition selon la revendication 1 ou la revendication 2, caractérisée par le fait que les grains anguleux de matériau caoutchouteux ont une dimension moyenne de l'ordre de 1 à 4 mm.3. Composition according to claim 1 or claim 2, characterized in that the angular grains of rubbery material have an average dimension of the order of 1 to 4 mm. 4. Composition selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la granulomé­trie du matériau caoutchouteux en grains anguleux est incluse dans la plage granulométrique du matériau minéral.4. Composition according to any one of claims 1 to 3, characterized in that the particle size of the rubbery material in angular grains is included in the particle size range of the mineral material. 5. Composition selon l'une quelconque des revendications 1 ou 4, caractérisée par le fait que la granulométrie du matériau caoutchouteux est telle qu'il se substitue à une fraction granulométrique correspondante du matériau minéral en grains.5. Composition according to any one of claims 1 or 4, characterized in that the particle size of the rubbery material is such that it replaces a corresponding particle size fraction of the mineral material in grains. 6. Composition selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les fibres libres sont en matériau organique synthétique.6. Composition according to any one of claims 1 to 5, characterized in that the free fibers are made of synthetic organic material. 7. Composition selon l'une quelconque des revendications à 6, caractérisée par le fait que les fibres ont un diamètre compris entre 0,1 et 1 mm et une longueur comprise entre 1 et 10 cm.7. Composition according to any one of claims to 6, characterized in that the fibers have a diameter between 0.1 and 1 mm and a length between 1 and 10 cm. 8. Composition selon l'une quelconque des revendications 1 à 7, caractérisé par le fait que le matériau minéral est non poreux.8. Composition according to any one of Claims 1 to 7, characterized in that the mineral material is non-porous. 9. Composition selon l'une quelconque des revendications 1 à 8, caractérisée par le fait que le matériau minéral en grains est préparé par concassage à partir de schistes vitrifiés extraits de terrils miniers brûlés.9. Composition according to any one of claims 1 to 8, characterized in that the granular mineral material is prepared by crushing from vitrified shales extracted from burnt mine dumps. 10. Composition selon la revendication 9, caractérisée en ce qu'elle contient, par mètre cube de cette composition, de 20 à 200 kg de ce matériau caoutchou­teux et de 1 à 10 kg de fibres libres.10. Composition according to claim 9, characterized in that it contains, per cubic meter of this composition, from 20 to 200 kg of this rubbery material and from 1 to 10 kg of free fibers. 11. Sol sportif auto-stabilisé constitué par la composition de l'une quelconque des revendications 1 à 10.11. Self-stabilized sports floor consisting of the composition of any one of claims 1 to 10.
EP19900400421 1989-02-17 1990-02-15 Composition of materials without a binder for self-stabilised sporting floors, and sporting floor so realised Expired - Lifetime EP0383691B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8902119A FR2643398B1 (en) 1989-02-17 1989-02-17 COMPOSITION OF MATERIALS WITHOUT BINDER FOR SELF-STABILIZED SPORTS FLOORS AND SPORTS FLOOR THUS PRODUCED
FR8902119 1989-02-17

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EP0383691A1 true EP0383691A1 (en) 1990-08-22
EP0383691B1 EP0383691B1 (en) 1993-05-19

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EP (1) EP0383691B1 (en)
DE (1) DE69001621T2 (en)
FR (1) FR2643398B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6338885B1 (en) 1997-03-10 2002-01-15 Fieldturf Inc. Synthetic turf
EP1448747A1 (en) * 2001-11-26 2004-08-25 Gsa Bloodstock Pty Ltd. Soil based material and method of producing same
EP1491685A1 (en) * 2003-06-23 2004-12-29 Ralph Schöpp Floor covering especially for tennis courts
US7960482B2 (en) 2006-12-11 2011-06-14 Dupont Powder Coatings France Sas Low gloss coil powder coating composition for coil coating

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2669950B1 (en) * 1990-11-30 1993-03-19 Tercharnor PROCESS FOR DRAWING GROUND MARKING LINES, ESPECIALLY SPORTS FIELDS, COMPOSITION OF MATERIALS SUITABLE FOR ITS IMPLEMENTATION AND SPORTS FIELD THUS OBTAINED.
NZ337854A (en) 1997-03-10 2001-05-25 Fieldturf Holdings Inc Synthetic turf with the length of artificial grass being twice the width between rows

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT339797B (en) * 1975-02-28 1977-11-10 Premm Ges M B H FLOORING FOR SPORTS FACILITIES
US4073753A (en) * 1975-04-07 1978-02-14 Stein Hauge Outdoor surface compositions
DE2638875A1 (en) * 1976-08-28 1978-03-02 Egon Rupieper Loose surface sports track laying system - uses permeable loose material with 20 to 50 per cent coarse rubber particles added
GB2184765A (en) * 1985-12-14 1987-07-01 Mansfield Standard Sand Co Lim Surface for sports arena

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT339797B (en) * 1975-02-28 1977-11-10 Premm Ges M B H FLOORING FOR SPORTS FACILITIES
US4073753A (en) * 1975-04-07 1978-02-14 Stein Hauge Outdoor surface compositions
DE2638875A1 (en) * 1976-08-28 1978-03-02 Egon Rupieper Loose surface sports track laying system - uses permeable loose material with 20 to 50 per cent coarse rubber particles added
GB2184765A (en) * 1985-12-14 1987-07-01 Mansfield Standard Sand Co Lim Surface for sports arena

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6338885B1 (en) 1997-03-10 2002-01-15 Fieldturf Inc. Synthetic turf
EP1448747A1 (en) * 2001-11-26 2004-08-25 Gsa Bloodstock Pty Ltd. Soil based material and method of producing same
EP1448747A4 (en) * 2001-11-26 2005-05-11 Gsa Bloodstock Pty Ltd Soil based material and method of producing same
EP1491685A1 (en) * 2003-06-23 2004-12-29 Ralph Schöpp Floor covering especially for tennis courts
US7960482B2 (en) 2006-12-11 2011-06-14 Dupont Powder Coatings France Sas Low gloss coil powder coating composition for coil coating

Also Published As

Publication number Publication date
FR2643398A1 (en) 1990-08-24
DE69001621T2 (en) 1994-01-05
FR2643398B1 (en) 1991-06-07
DE69001621D1 (en) 1993-06-24
EP0383691B1 (en) 1993-05-19

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