EP0260769B1 - Procédé de réalisation d'une couche porteuse pour terrain en gazon artificiel et un terrain en gazon artificiel ainsi réalisé - Google Patents
Procédé de réalisation d'une couche porteuse pour terrain en gazon artificiel et un terrain en gazon artificiel ainsi réalisé Download PDFInfo
- Publication number
- EP0260769B1 EP0260769B1 EP87201794A EP87201794A EP0260769B1 EP 0260769 B1 EP0260769 B1 EP 0260769B1 EP 87201794 A EP87201794 A EP 87201794A EP 87201794 A EP87201794 A EP 87201794A EP 0260769 B1 EP0260769 B1 EP 0260769B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sand
- particles
- artificial
- rubber
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
Links
Classifications
-
- 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
- E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
Definitions
- the invention relates to a method for providing a substructure construction for an artificial grassfield by providing a foundation on a layer of sand which is present or has been provided, said foundation for the larger part consisting of natural round sand or river sand to which a material of organic origin is added in an amount of more than 1% by weight calculated on the quantity of sand.
- the invention furthermore relates to an artificial grassfield, having such a substructure construction, which can be used for practising various sports, especially soccer.
- the damping is the most important factor because with soccer the players make more movements such as jumping and making slidings than with hockey. It has been tried to vary the damping of artificial grass by partly substituting the layer of sand which was strewn between the fibres for an other material such as rubber particles being connected together by means of a binding agent, as described in the US patent specification 4,396,653. On said rubber grains connected together by a binding agent there was strewn a layer of sand. In practice, however, such a construction proved to be unsatisfactory because the layers strewn in were of a too resilient nature.
- An improved substructure construction for an artificial grassfield which can especially be used for soccer because a better damping is obtained is known from the European patent specification 0,136,747.
- the substructure construction described therein is composed of unbroken sand which is mixed with at least 1 per cent by weight of a fibrous material, for which purpose polypropylene fibres, Nylon@ fibres or glass fibres have been mentioned. From further measurements and observations it has become apparent that the optimum result which can be obtained with a substructure construction for an artificial grassfield with regard to the flatness and the damping power can be improved by a substructure construction according to the invention.
- Said substructure construction can be laid according to a method as mentioned in the preamble and it is characterized in that 60-70 per cent by weight of river sand is distributed evenly among a quantity of 40-30 per cent by weight of rubber particles, the main part of the particles having a thickness greater than half the length of the particles. It might be that in the non-prepublished European patent application 204,381 (publication date December 10, 1986) it has been indicated that a substructure construction for an artificial grassfield can be obtained from a mixture of sand and cuttings or fibres of an elestomeric material, but these cuttings or fibres have a length of 10-40 mm and a thickness of 1-4 mm. This means that one used small sheets having a thickness being about 10% of the length .
- crumbles or fragments as used according to the present invention have such a size that the length and thickness are comparable.
- a skeleton of rubber has been obtained in which sand fills up the gaps between the rubber particles.
- the elasticity of the skeleton of the rubber particles is decreased and can be controlled by the sand as filled in between the particles of rubber.
- the substructure construction is up to the high standards required for an artificial grassfield for playing soccer.
- the main consideration thereby is the playing comfort and the damping of the total construction.
- the damping power of the total construction is mainly determined by the construction of the substructure. Said damping power is especially important when the sportsman comes down after a jump, whereby the sportsman should have the same feeling as on a natural field. When the damping power is too small the playing surface is relatively hard and the chance of getting injured is too great.Therefore it is very difficult to construct a substructure construction for a field of artificial grass whereby the final result is that the sportsman experiences the artificial grass as much as possible the same as a field of natural grass.
- the rubber particles may originate from mechanically ground car tyres, the larger part of the rubber particles having a screen size of 6-11 mm and being free of textile and steel.
- On filling the rubber matrix with sand up to 10 per cent by weight of water is added during the mixing of sand and rubber particles in order to aid the filling of the open spaces among the rubber particles.
- the mixture of rubber and sand is provided on the foundation to a height of 4-20 cm, preferably to a height of about 7 cm.
- high damping power corresponds with a high absorption of energy.
- the layer has a thickness of at least 6 cm.
- rubber and sand grains having about the same weight, which implies that because of the lower specific weight of rubber the rubber particles are bigger than the sand grains.
- the rubber grains form the damping skeleton of the foundation whereby displacements or deformations are as much as possible inhibited by the sand filling.
- the terrain where an artificial grassfield is to be laid down is dug away up to the frost limit.
- a drainage system consisting of pipes for discharging any excess of water.
- a sand bed is provided to a height of about 12 cm under the edge, said sand being chosen from moderately coarse sand being pervious to water and having a particle size of 180;im - 300 ⁇ m.
- said layer consisting of a mixture of 67 weight % of river sand and 33 weight % of rubber particles, said rubber particles having been obtained from mechanically ground car tyres.
- the rubber particles had a screen size of 7-11 mm and the sand consisted of natural round sand or river sand whose particle sizes were between 0.2 and 2 mm, 80% being larger that 0.5 mm.
- the mixture of rubber and sand was obtained by adding sand to the rubber in an intensive mixer, so that the open spaces between the rubber particles were filled with sand.
- the layer of rubber and sand thus provided on the sand bed formed a rubber skeleton whose open spaces were filled with sand particles, so that the freedom of movement of the rubber particles was strongly restricted by the sand.
- On this bed of rubber and sand a film of porous material was then provided and finally the artificial grass. With this construction an artificial grassfield has been obtained suitable for playing soccer.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Prostheses (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Materials For Medical Uses (AREA)
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87201794T ATE49251T1 (de) | 1986-09-15 | 1987-09-14 | Verfahren zum erstellen eines unterbaus fuer einen kunstrasenplatz und ein darauf angebrachtes kunstrasenfeld. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8602322A NL8602322A (nl) | 1986-09-15 | 1986-09-15 | Werkwijze voor het aanbrengen van een onderbouwconstructie voor een kunstgrasveld en kunstgrasveld met een dergelijke onderbouwconstructie. |
NL8602322 | 1986-09-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0260769A1 EP0260769A1 (fr) | 1988-03-23 |
EP0260769B1 true EP0260769B1 (fr) | 1990-01-03 |
Family
ID=19848546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87201794A Revoked EP0260769B1 (fr) | 1986-09-15 | 1987-09-14 | Procédé de réalisation d'une couche porteuse pour terrain en gazon artificiel et un terrain en gazon artificiel ainsi réalisé |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0260769B1 (fr) |
AT (1) | ATE49251T1 (fr) |
DE (1) | DE3761316D1 (fr) |
ES (1) | ES2005323A6 (fr) |
GB (1) | GB2196539B (fr) |
NL (1) | NL8602322A (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2215731B (en) * | 1988-02-09 | 1992-04-08 | Collins Martin Enterprises | Exercise areas |
NL8802671A (nl) * | 1988-11-01 | 1990-06-01 | Heijmans Wegenbouwmij | Onderbouwconstructie voor een kunstgrasveld en kunstgrasveld met een dergelijke onderbouwconstructie. |
GB8905976D0 (en) * | 1989-03-15 | 1989-04-26 | Souter John | Equestrian surface |
NL8901484A (nl) * | 1989-06-12 | 1991-01-02 | Heidemij Uitvoering | Sportveld met natuurlijk gras en kunstgras, en een werkwijze voor het aanleggen daarvan. |
GB9015961D0 (en) * | 1990-07-20 | 1990-09-05 | Bowers Frank | Recreational surface |
NL9002244A (nl) * | 1990-10-16 | 1992-05-18 | Desseaux H Tapijtfab | Kunstgrasveld. |
US6295756B1 (en) | 1992-06-22 | 2001-10-02 | Turf Stabilization Technologies Inc. | Surface for sports and other uses |
DE4336565C1 (de) * | 1993-10-27 | 1995-01-26 | Rogmann Hans Josef | Elastische Tragschicht für Sportflächen und Verfahren zu deren Herstellung |
US5622002A (en) * | 1994-05-09 | 1997-04-22 | Board Of Trustees Operating Michigan State University | Method for reducing abrasion of turfgrass on activity fields |
GB9608121D0 (en) * | 1996-04-19 | 1996-06-26 | Simpson David | Artificial synthetic equestrian surface |
US6029397A (en) * | 1997-06-06 | 2000-02-29 | Technology Licensing Corp. | Stabilized natural turf for athletic field |
US6035577A (en) * | 1998-12-03 | 2000-03-14 | Technology Licensing Corp | Temporarily stabilized natural turf |
ES2216714B1 (es) * | 2003-04-09 | 2005-12-16 | Cobertura De Caucho, S.R.L. | Manto-base de soporte para superficies de cesped. |
US9011740B2 (en) | 2008-12-15 | 2015-04-21 | Textile Management Associates, Inc. | Method of recycling synthetic turf and infill product |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE322538B (fr) * | 1966-12-17 | 1970-04-13 | Internationaler Glas Trust Reg | |
DE3313329A1 (de) * | 1983-04-13 | 1984-10-18 | Balsam Sportstättenbau GmbH & Co. KG, 4803 Steinhagen | Bodenbelag fuer aussen-sportstaetten |
NL8303018A (nl) * | 1983-08-30 | 1985-03-18 | Heijmans Wegenbouwmij | Werkwijze voor het aanbrengen van een onderbouwconstructie voor een kunstgrasveld en kunstgrasveld aangebracht op een dergelijke onderbouwconstructie. |
NL8501610A (nl) * | 1985-06-04 | 1987-01-02 | Hollandsche Betongroep Nv | Sportveld. |
-
1986
- 1986-09-15 NL NL8602322A patent/NL8602322A/nl not_active Application Discontinuation
-
1987
- 1987-09-14 GB GB8721600A patent/GB2196539B/en not_active Expired - Fee Related
- 1987-09-14 AT AT87201794T patent/ATE49251T1/de not_active IP Right Cessation
- 1987-09-14 EP EP87201794A patent/EP0260769B1/fr not_active Revoked
- 1987-09-14 DE DE8787201794T patent/DE3761316D1/de not_active Expired - Fee Related
- 1987-09-15 ES ES8702656A patent/ES2005323A6/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2196539A (en) | 1988-05-05 |
ES2005323A6 (es) | 1989-03-01 |
DE3761316D1 (de) | 1990-02-08 |
EP0260769A1 (fr) | 1988-03-23 |
ATE49251T1 (de) | 1990-01-15 |
GB8721600D0 (en) | 1987-10-21 |
NL8602322A (nl) | 1988-04-05 |
GB2196539B (en) | 1990-01-10 |
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