WO1996032174A1 - Ameliorations de surfaces artificielles - Google Patents

Ameliorations de surfaces artificielles Download PDF

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Publication number
WO1996032174A1
WO1996032174A1 PCT/AU1996/000219 AU9600219W WO9632174A1 WO 1996032174 A1 WO1996032174 A1 WO 1996032174A1 AU 9600219 W AU9600219 W AU 9600219W WO 9632174 A1 WO9632174 A1 WO 9632174A1
Authority
WO
WIPO (PCT)
Prior art keywords
artificial surface
artificial
rubber
mixture
polymer
Prior art date
Application number
PCT/AU1996/000219
Other languages
English (en)
Inventor
Michael James Hudson
Original Assignee
Protrak Australia Pty. Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Protrak Australia Pty. Limited filed Critical Protrak Australia Pty. Limited
Priority to AU52615/96A priority Critical patent/AU712740B2/en
Publication of WO1996032174A1 publication Critical patent/WO1996032174A1/fr

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
    • E01C13/06—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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • 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
    • E01C11/00—Details of pavings
    • E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
    • E01C11/224—Surface drainage of streets
    • E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
    • E01C11/226—Coherent pavings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

Definitions

  • the present invention relates to an improved artificial surface and to processes for producing same.
  • the artificial surface has particular application as a weatherproof track for sporting and recreational events, such as horse racing and other equestrian events, and childrens playgrounds.
  • Sand and cinders drain well but can harden and cause abrasive injuries to horses in training. Varying depths of the material through age and use render the tracks dangerous and the users vulnerable to injury.
  • an artificial surface comprising a mixture of rubber and a polymer modified bitumen emulsion, mixed in a proportion sufficient to produce a water permeable and flexible surface.
  • the artificial surface includes aggregate and filler material.
  • a catalyst is also present in the mixture.
  • the aggregate may be basalt and the filler may be cement dust.
  • the catalyst may be water.
  • the rubber and polymer modified bitumen emulsion are in a proportion of 5:1.
  • the artificial surface includes air pockets that facilitate water permeation and flexibility.
  • the rubber is derived from shredded tyres.
  • a method for producing an artificial surface comprising mixing rubber with a polymer modified bitumen emulsion in a proportion sufficient to produce a water permeable and flexible surface.
  • Recycled and reconstituted rubber is cold mixed with a standard polymer modified bitumen emulsion in a 5: 1 ratio at ambient temperature in a slurry machine for about five minutes. Additional polymer corresponding to the polymer used in the polymer modified bitumen emulsion is added to the mixture in an amount of about 1 5% of the total polymer concentration.
  • Variation of the amount of polymer used in the mixture will vary the hardness of the surface.
  • the compounded mixture is forced through a screeding board by an internal auger which exerts downward pressure on the mixture whilst distributing and laying the mixture onto an impervious base to the specific depth required.
  • a possible pressure to be applied so as to force the material through the screed is between 20 to 50 kilos per square meter. Similar laying results can be obtained by using a standard road paving machine which operates on corresponding principles. For racetracks the depth can vary from between 60 mm to 100 mm depending upon the specific requirements.
  • the surface of the present invention may be tailored for specific applications by varying the amount of polymer in the mixture.
  • Racetracks and trotting tracks require a firm surface, so the components are mixed at the highest ratio i.e. using 15% polymer.
  • Greyhound tracks require a softer surface so, accordingly, the polymer is altered to a mix with only 10% polymer. Childrens playgrounds are softer still so a mix is used with less than 8% polymer, but walkways for stables, etc. are hardened even more than the 15% by coating the surface with an ethyl vinyl acetate (e.v.a.) polymer from a suitable sprayer machine (which is purpose built for high temperature spraying) in a mix of 5% of the total emulsion used in the preparation of the surface.
  • ethyl vinyl acetate e.v.a.
  • the artificial surface may be held in place by erecting on either side thereof special barriers.
  • These barriers are initially made in moulds using the same proportions of mix 5:1 plus 1 of sand or crusher dust, and the moulds are 160 mm high x 120 mm wide. The barriers are permitted to cure for approximately 48 hours, then removed from the moulds in 5 metre lengths, transported to the site of the laid artificial surface and joined together and to the surface by direct heat and a small amount of bitumen.
  • the barriers may be coloured and may be of variable height as desired.
  • the aforementioned emulsion can be sprayed in such an amount that it bleeds through to the base, thus forming a seal on the base whilst binding the surface.
  • the extra amount of emulsion needed for this exercise is 10% of the specific mix. For instance, if 1 kg is used in the mix, an extra 100 grams is needed for the bleed process.
  • Curing of the surface material in normal temperatures takes about 48 hours for a standard 90 mm thick surface, but surfaces that are above or below the 90 mm thickness level will take proportionally longer or shorter time to cure.
  • the surface is then coloured as desired with a high grade ultraviolet protective acrylic paint that is sprayed onto the surface. This cures within 24 hours depending upon the ambient temperature.
  • a top coat of coloured material is sprinkled loosely over the finished surface to a depth of approximately 60 mm.
  • the aforementioned surface is useful in racetracks but could also be used for other applications, e.g. playgrounds, equestrian arenas, etc.
  • a particularly preferred artificial surface of the invention is prepared according to the following method.
  • the artificial surface is useful as part of a road for vehicles crossing a horse racing track.
  • a road base across a horse racing track Prior to laying the said artificial surface, a road base across a horse racing track is prepared.
  • the road base is compacted, hardened and stabilised so as to withstand the constant pressure of both equine and vehicular traffic thereon and to be consistent and durable.
  • the road base should be made according to known industry specifications, comprise a depth of about 1 50 mm, and be cambered or angled downwardly to one or more drainage systems, such as a spoon drain, sump, pipe or garden. In some instances, a cambered road base of concrete or like material may be used.
  • the road base may be sealed with conventional prime seal, such as a hot bitumen spray, and then may be re-primed with a polymer modified sealing material to produce a membrane over the road base that is both waterproof and flexible.
  • the membrane is then permitted to cure for 24 to 48 hours depending upon ambient weather conditions.
  • the membrane over the road base acts as a waterproof seal and protects the road base from erosion. It also facilitates the rapid flow of water in the direction of the cambered surface to the sides of the road base where the water may be drained from the road base by established drainage sumps and the like.
  • a layer of aggregate of particle size between about 7 and 10 mm may cover the membrane sealed road base.
  • the combination of road base, membrane and aggregate provide a long term, stable foundation for further layers to be applied thereon.
  • the artificial surface of the invention is then applied over the aggregate layer which provides a high surface area for bonding of the artificial surface.
  • the artificial surface is produced by cold, dry mixing in a "PAVESEAL" (trade mark) mixing machine (used for road making) a combination of about 32.8% w/w recycled, reconstituted or new rubber (of mesh size about 7 to 16), about 32.8% w/w mineral aggregate (of up to 7 mm diameter) such as basalt, sand or crusher dust.
  • Added to this mixture is about 4.8% w/w filler, such as cement dust and fly ash, about 2.6% w/w catalyst, such as water, and about 27% w/w polymer modified bitumen emulsion.
  • mineral aggregate, filler and water catalyst in the making the artificial surface of the present example is preferred and may affect the flowing capabilities and chemistry of the mixture, as well as the final hardness of the surface.
  • the emulsion includes 17.5% w/w latex and the mixing is done at an ambient temperature of about 25°C.
  • the polymer may be e.v.a. or SBS.
  • the above preferred formula may be altered to provide artificial surfaces that vary in their degree of hardness.
  • the mixing may also be conducted hot, rather than cold, depending on the required use. If the weather temperature is significantly outside the ambient range, variations may be made to the quantity of components used in the formula at the site of production. The length of mixing time is also dependent on such conditions.
  • the mixing machine has a calibrated continuous external flow means and a means for constantly monitoring the concentrations of the mixed components during the external flow.
  • the various concentrations and overall density of the mixture are monitored constantly whilst the mixture is poured out of the machine and the mixture can be regulated according to these factors if required.
  • the monitoring thus helps to calibrate either an increase or decrease in the quantities of components and the speed of pouring.
  • the flow box of the mixing machine from which the mixture is poured is at a height that can be adjusted according to the specific requirements.
  • the mixture comprising a preferred artificial surface of the invention is laid over the aggregate in an even distribution at a depth of between about 65 mm and 100 mm to provide optimal impact absorption and water permeability.
  • the layer is then allowed to air cure for about 40 minutes depending on weather conditions, before it is subject to controlled downward pressure by hydraulic vibrating and rolling machinery.
  • the application of downward pressure must be of such a magnitude as to form a tightly gripped, water permeable and shock absorbent mat over the road base foundation.
  • the rolling of heavy machinery assists in the binding of the rubber and other components of the artificial surface.
  • the extremities of the artificial surface layer may be further sealed to prevent physical deterioration thereof by spraying with a hot bitumen spray or by building retaining walls.
  • the artificial surface of this example has the following properties and advantages over prior art surfaces:-
  • Dust and insect free surface 1 4) A surface that does not require any watering or chemical treatments
  • the artificial surface layer may be overlaid by an overcushion surface of laterally serrated rubber shavings of between about 20 mm and 80 mm maximum width depending on requirements of use. The shavings are randomly cut top and bottom to provide a maximum coefficient of friction.
  • This overcushion surface of rubber shavings forms a helpful interlocking protective matrix over the artificial surface layer whilst permitting a high rate of air and water percolation therethrough under all weather conditions. It also compliments the shock absorbing properties of the artificial surface.
  • the overcushion surface and/or the artificial surface may be coated and coloured by a coloured surface coating material that inhibits ultraviolet radiation induced damage to the surfaces, strengthens the rubber component of the surfaces, and provides a seal against oxidation of the emulsion and other components. Coating may be carried out over small to large areas by variously sized spray machines.
  • the coating material also compliments the impact absorbing properties of the surfaces, can flex and bend with minimal flaking or peeling, and retains its colour over time and wide ranging weather conditions.
  • the coating adds weight to the surfaces, thereby reducing wind and rain caused scattering of the rubber shavings, and provides a colour appearance that may blend aesthetically with the surrounding environment.
  • the artificial surface of the present invention has advantageous qualities that include water permeability, high resistance to temperature extremes, high resistance to ultraviolet rays and oxidation, high stress and shock absorption and recovery post yield, high tensile strength, and superior anti-strip properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Road Paving Structures (AREA)

Abstract

Surface artificielle comprenant un mélange de caoutchouc et d'émulsion de bitume modifiée par polymères, mélangés dans une proportion suffisante pour obtenir une surface souple et perméable à l'eau.
PCT/AU1996/000219 1995-04-11 1996-04-11 Ameliorations de surfaces artificielles WO1996032174A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU52615/96A AU712740B2 (en) 1995-04-11 1996-04-11 Improvements in artificial surfaces

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPN2351 1995-04-11
AUPN2351A AUPN235195A0 (en) 1995-04-11 1995-04-11 Improvements in artificial surfaces

Publications (1)

Publication Number Publication Date
WO1996032174A1 true WO1996032174A1 (fr) 1996-10-17

Family

ID=3786704

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000219 WO1996032174A1 (fr) 1995-04-11 1996-04-11 Ameliorations de surfaces artificielles

Country Status (2)

Country Link
AU (1) AUPN235195A0 (fr)
WO (1) WO1996032174A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008494C2 (nl) * 1998-03-05 1999-09-07 Agterberg B V A Werkwijze voor het verbeteren van een wegdek, alsmede met die werkwijze verkregen wegdek.
NL1011478C2 (nl) * 1998-03-05 1999-09-08 Kessel B V Geb Van Werkwijze voor het verbeteren van een nieuw of bestaand wegdek, alsmede met die werkwijze verkregen wegdek.
EP1332197A1 (fr) * 2000-10-20 2003-08-06 Michael James Hudson Surface artificielle pour faire pousser du gazon et d'autres plantes pour former du gazon en plaques

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB375298A (en) * 1931-03-13 1932-06-13 Edith Ottoline Cowper Improvements in materials for roads and ways, floors, sports grounds and such like paving purposes
GB2087407A (en) * 1980-11-05 1982-05-26 British Petroleum Co Bituminous compositions
GB2185490A (en) * 1986-01-14 1987-07-22 En Tout Cas Plc Substitute ground surface material
WO1987007315A1 (fr) * 1986-05-30 1987-12-03 Nottinghamshire County Council Structures pour surfaces de zones pietonnieres, de zones ouvertes a la circulation de vehicules ou de terrains de sports
WO1989007635A1 (fr) * 1988-02-09 1989-08-24 Martin Collins Enterprises Limited Surfaces d'exercice
EP0356066A2 (fr) * 1988-08-26 1990-02-28 Fibrescreed Limited Matériaux pour joints de ponts, l'utilisation dans et procédé pour la préparation ou le revêtement des chaussées et similaires
EP0604258A1 (fr) * 1992-12-14 1994-06-29 Total Raffinage Distribution S.A. Emulsions aqueuses bitume-polymère, leur procédé de préparation et leurs applications

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB375298A (en) * 1931-03-13 1932-06-13 Edith Ottoline Cowper Improvements in materials for roads and ways, floors, sports grounds and such like paving purposes
GB2087407A (en) * 1980-11-05 1982-05-26 British Petroleum Co Bituminous compositions
GB2185490A (en) * 1986-01-14 1987-07-22 En Tout Cas Plc Substitute ground surface material
WO1987007315A1 (fr) * 1986-05-30 1987-12-03 Nottinghamshire County Council Structures pour surfaces de zones pietonnieres, de zones ouvertes a la circulation de vehicules ou de terrains de sports
WO1989007635A1 (fr) * 1988-02-09 1989-08-24 Martin Collins Enterprises Limited Surfaces d'exercice
EP0356066A2 (fr) * 1988-08-26 1990-02-28 Fibrescreed Limited Matériaux pour joints de ponts, l'utilisation dans et procédé pour la préparation ou le revêtement des chaussées et similaires
EP0604258A1 (fr) * 1992-12-14 1994-06-29 Total Raffinage Distribution S.A. Emulsions aqueuses bitume-polymère, leur procédé de préparation et leurs applications

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT ABSTRACT, Accession No. 85-266898/43, Class A93; & JP,A,60 179 461 (TOA DORO KOGYO KK.), 13 September 1985. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008494C2 (nl) * 1998-03-05 1999-09-07 Agterberg B V A Werkwijze voor het verbeteren van een wegdek, alsmede met die werkwijze verkregen wegdek.
NL1011478C2 (nl) * 1998-03-05 1999-09-08 Kessel B V Geb Van Werkwijze voor het verbeteren van een nieuw of bestaand wegdek, alsmede met die werkwijze verkregen wegdek.
WO1999045206A1 (fr) * 1998-03-05 1999-09-10 Gebr. Van Kessel Buren B.V. Procede permettant d'ameliorer un revetement routier nouveau ou existant
EP1332197A1 (fr) * 2000-10-20 2003-08-06 Michael James Hudson Surface artificielle pour faire pousser du gazon et d'autres plantes pour former du gazon en plaques
EP1332197A4 (fr) * 2000-10-20 2005-11-09 Stratum Green Pty Ltd Surface artificielle pour faire pousser du gazon et d'autres plantes pour former du gazon en plaques
US7171780B1 (en) * 2000-10-20 2007-02-06 Stratum Green Pty Ltd. Surface for the growing of turf forming grasses and other plants

Also Published As

Publication number Publication date
AUPN235195A0 (en) 1995-05-11

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