EP0260769B1 - Verfahren zum Erstellen eines Unterbaus für einen Kunstrasenplatz und ein darauf angebrachtes Kunstrasenfeld - Google Patents

Verfahren zum Erstellen eines Unterbaus für einen Kunstrasenplatz und ein darauf angebrachtes Kunstrasenfeld Download PDF

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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.)
Expired - Lifetime
Application number
EP87201794A
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English (en)
French (fr)
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EP0260769A1 (de
Inventor
Josephus Cornelis Heerkens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wegenbouwmaatschappij J Heijmans BV
Original Assignee
Wegenbouwmaatschappij J Heijmans BV
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Application filed by Wegenbouwmaatschappij J Heijmans BV filed Critical Wegenbouwmaatschappij J Heijmans BV
Priority to AT87201794T priority Critical patent/ATE49251T1/de
Publication of EP0260769A1 publication Critical patent/EP0260769A1/de
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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)
  • Materials For Medical Uses (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Claims (6)

1. Verfahren zum Erstellen eines Unterbaus für einen Kunstrasenplatz durch Bereitstellen einer Grundlage auf einer vorhandenen oder vorbereiteten Sandschicht, wobei die Grundlage zum größeren Teil aus natürlichem runden Sand oder Flußsand besteht, dem ein Material organischen Ursprungs in einer Menge von mehr als 1 Gew.-% bezogen auf die Sandmenge hinzugefügt ist, dadurch gekennzeichnet, daß 60 bis 70 Gew.-% Flußsand gleichmäßig in einer Menge von 40 bis 30 Gew.-% Gummiteilchen verteilt ist, wobei der Hauptanteil der Teilchen einer Dicke aufweist, die größer ist als die halbe Teilchenlänge.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Gummiteilchen von mechanisch zerkleinerten Fahrzeugreifen stammen, wobei der größere Teil der Teilchen eine Siebgröße von 6 bis 11 mm hat und frei von Textilien und Stahl ist.
3. Verfahren nach Anspruch 1-2, dadurch gekennzeichnet, daß die Füllung der Gummimatrix mit Sandteilchen verbessert wird durch Hinzufügen von bis zu. 10 Gew.-% Wasser während des Mischens von Sand und Gummiteilchen.
4. Verfahren nach Anspruch 1-3, dadurch gekennzeichnet, daß die Mischung aus Gummi und Sand auf der Grundlage in einer Höhe von 4 bis 20 cm aufgebracht wird.
5. Verfahren nach Anspruch 1-4, dadurch gekennzeichnet, daß die Gummiteilchen und die Sandkömer im wesentlichen das gleiche Gewicht haben.
6. Kunstrasenfeld mit einem Unterbau und einer oberen Schicht mit synthetischen Fasern, dadurch gekennzeichnet, daß der Unterbau wie in den Ansprüchen 1-5 beschrieben, bereitgestellt wird.
EP87201794A 1986-09-15 1987-09-14 Verfahren zum Erstellen eines Unterbaus für einen Kunstrasenplatz und ein darauf angebrachtes Kunstrasenfeld Expired - Lifetime EP0260769B1 (de)

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 (de) 1988-03-23
EP0260769B1 true EP0260769B1 (de) 1990-01-03

Family

ID=19848546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87201794A Expired - Lifetime EP0260769B1 (de) 1986-09-15 1987-09-14 Verfahren zum Erstellen eines Unterbaus für einen Kunstrasenplatz und ein darauf angebrachtes Kunstrasenfeld

Country Status (6)

Country Link
EP (1) EP0260769B1 (de)
AT (1) ATE49251T1 (de)
DE (1) DE3761316D1 (de)
ES (1) ES2005323A6 (de)
GB (1) GB2196539B (de)
NL (1) NL8602322A (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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.
CA2747152C (en) 2008-12-15 2016-01-12 Textile Management Associates, Inc. Method of recycling synthetic turf and infill product

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE322538B (de) * 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.

Also Published As

Publication number Publication date
NL8602322A (nl) 1988-04-05
GB2196539A (en) 1988-05-05
ES2005323A6 (es) 1989-03-01
ATE49251T1 (de) 1990-01-15
GB2196539B (en) 1990-01-10
GB8721600D0 (en) 1987-10-21
DE3761316D1 (de) 1990-02-08
EP0260769A1 (de) 1988-03-23

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