• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    In a method for producing a seal of roadways, e.g. on bridges for the subsequent application of a wearing, covering or wearing course of a road construction, the road is primed and possibly sprinkled with quartz sand, whereupon an injection elastomer coating is sprayed, then applied an adhesive primer and this is sprinkled over the entire surface with a plastic granules. The adhesion primer used is an epoxy resin. On the plastic granules, a bitumen emulsion or a bitumen latex emulsion is applied.
    公开号:AT513000A1
    申请号:T677/2012
    申请日:2012-06-12
    公开日:2013-12-15
    发明作者:
    申请人:Rojek；Woschitz；
    IPC主号:
    专利说明:

    • · · · · · · · · · · · · ··· ···············
    The invention relates to a method for producing a seal of roadways, e.g. on bridges or garages for the subsequent application of a load-bearing, covering or wearing course of a road surface, in which the substructure to be sealed is primed and, depending on the circumstances, sprinkled with quartz sand. Then an injection elastomer coating is sprayed onto which an adhesion primer is subsequently applied. This is sprinkled all over with a plastic granulate. Then the carrier, cover or wear layer is applied hot.
    Such a method has become known, for example, from the patent AT 413990 B. The spray elastomer coating described there consists of a polyurethane-based sprayed-on film. The adhesion primer described therein is based on polyurethane, wherein a modified polyether polyol in combination with a formulated isocyanate is described as being particularly preferred. The plastic granulate based on a synthetic resin described in AT 413990 B is a modified thermoplastic polyolefin.
    The layer structure described above serves to seal roadways, especially in the area of bridges or garages to permanently protect the underlying substructure (the underlying structure) from moisture, thawing chemicals and other road-related, including chemical, effects and at the same time firmly and permanently connect the road structure above the sealing layers with the substructure.
    The seal is achieved here in particular by the spray elastomer coating. On this spray-elastomer coating, a plastic granulate is applied and fixed over the entire surface by means of an adhesive primer, which is to ensure that the load-bearing, covering or wear layer of the road construction applied thereto, consisting e.g. made of asphalt, permanently and firmly connected to the waterproofing. The shear and adhesive tensile strength is achieved in particular by the fusion of the hot applied wearing, covering or wearing layer with the adhering to the seal plastic granules. Made of the merging materials of the supporting,
    Cover or wear layer and the plastic granules to a largely monolithic body to be created, which should ensure the required stability.
    The following problems occur: 1. The problem of too low a temperature of the material to be hot applied to the wearing, covering or wearing layer:
    For example, the commonly used asphalt usually leaves the factory at a temperature of approx. 180 ° C, but may cool to a temperature of only approx. 120 ° C until it is applied with the asphalt paver. A low temperature of the applied hot material (asphalt or other) can cause the plastic granulate no longer sufficiently melted with the underlying surface (primer) and / or the applied hot material. 2. The problem of due to strong weather-related heating of the pavement to be respected minimum softening temperature of the granules. Φ • • • · · · · · · · · · · · · · • • • • • • • • • • • • • •.
    The softening temperature of the plastic granules can be influenced by choosing a suitable plastic. However, a material with a relatively low softening temperature is not suitable, because there is a risk that the material of the (molten) granules will become too soft even in weather-dependent heating (solar irradiation) of the finished road surface. The material must remain stable even after installation up to temperatures of approx. 100 ° C, because road surfaces heat up strongly in direct sunlight. 3. The problem of sufficient adhesion of the plastic granules to the primer during installation.
    Another problem is that the plastic granules do not adhere well enough to the primer. This leads to the fact that it comes when driving covered with plastic granules roadway with heavy machinery during installation, especially when driving over the asphalt paver, because of the Verschubkräfte occurring in a loosening and shifting of the plastic granules before the wearing, covering or wearing layer applied has been.
    The problems described lead when: • the temperature of the applied material is reduced and the granules and / or the primer do not melt or do not fuse sufficiently with the applied material for the wearing, covering or wearing layer; or • the plastic granulate has been displaced and / or tolerated during installation, especially when driving on working machines, especially if, when applying the material for the load-bearing, cover or wear-resistant
    ·················································································.
    Layer is present in some places too little or too much granules and the granules and / or the primer with the applied material for the support,
    Covering or wear layer does not melt or does not melt sufficiently, in addition to the fact that the shear and adhesive tensile strengths required for road traffic can not always be achieved durably during installation or afterwards; furthermore, if • the material used for the plastic granules loses its strength due to a low softening point on heavy heating of the road surface after installation, in addition to the fact that the shear and adhesive tensile strengths required for road traffic can be undercut when the road surface is heated (weather-related).
    The permanent and safe shear and adhesive strength is particularly in the area of gradients or braking distances of lanes, inclined curves or dilation joints of high relevance.
    The present invention therefore aims to provide a method with which the problems described above are at least partially solved. In particular, the invention aims to provide a very strong, durable and permanently resilient connection of the plastic granules with the spray elastomer coating and / or. the adhesion primer on the one hand and the wearing, covering or wearing layer of the road construction with the plastic granules and / or. the underlying structure on the other hand to achieve.
    In order to achieve this aim, the method of the type mentioned at the outset is in accordance with the invention substantially
    • * · Mt · ♦ Μ * · »· • ·» «« · · · »··« · · · · ♦ < that an epoxy resin is used as the adhesion primer and that a bitumen emulsion or a bitumen latex emulsion is applied to the plastic granules. By using epoxy resin, adhesion of the plastic granules to the substrate, i. significantly improved on the spray elastomer coating. The application of the bitumen emulsion or bitumen latex emulsion causes the plastic granules to solidify and stabilize, resulting in a resin-coated adhesive layer that bonds well with the deck, deck or wear layer of the road construction. After the connection with the wearing, covering or wearing layer, a similar effect results as with the use of resin-coated bitumen. Another advantage of the application of the bitumen emulsion or the bitumen latex emulsion is that the liquid emulsion during application partially fills the interstices between the plastic granules and the underlying, coated with the primer surface and the spaces between the individual plastic granules. As a result, a particularly full-surface and effective connection of the later-melting granules with the primer is achieved. At the same time, the liquid bitumen emulsion or bitumen-latex emulsion causes the melt (plastic granulate and emulsion) penetrates particularly deep in the granular substance of the irregular surface of the applied hot material of the support, cover or wearing layer when applied. As a result, the contact and adhesive surface is substantially increased with the applied wearing, covering or wearing layer and the connection and adhesion to the supporting, covering or wearing layer are substantially improved. 6
    A bitumen latex emulsion is a colloidal mixture of road bitumen, latex and water. Preferably, a stable emulsion is used in the invention. The amount of bituminous emulsion or bitumen emulsion to be applied depends, inter alia, on the particle size of the aggregate contained in the supporting, covering or wearing course of the road structure. The coarser the granules of the aggregate, the more emulsion and plastic granules is required because larger grains also form larger spaces that can be filled by the melt. In the context of the process according to the invention, preference is given to applying the bitumen emulsion or bitumen-latex emulsion in quantities of 600-1000 g / m 2, in particular 750-850 g / m 2, preferably by spraying in the high-pressure process.
    The adhesive layer resulting from the combination of the bitumen emulsion or bitumen-latex emulsion with the plastic granules furthermore leads in a very advantageous manner to a better and additional protection of the spray-elastomer coating from water and chemicals. Conventional spray elastomer coatings have a water absorption capacity of about 3-5%. Roadway seals of the type described herein are designed for a useful life of at least 20 years. If the layers arranged above the sprayed elastomer coating are permeable to water, an amount of water for spray elastomer coating penetrates over the years such that its maximum water absorption capacity is utilized and the corresponding amount penetrates into the coating. As a result, the underlying structure necessarily comes in contact with water despite the spray elastomer coating. If the roadway is loaded with salt water or other thawing or traffic-related chemicals, which is often the case with lanes, especially in the case of salt or thawing discrepancies required in winter, there is an additional risk that the salts or chemicals penetrate into the material matrix of the spray elastomer coating and crystallize there. This leads to an expansion of the pores of the sprayed elastomer coating due to the increase in volume during crystallization, which in turn increases their water absorption and the amount of water accumulating there, which in turn crystallizes the salts and chemicals, widening the pores and more Accelerated water absorption in a continuous cycle. In contrast, the resulting in the present invention from the compound of the bitumen emulsion or bitumen latex emulsion with the plastic granules adhesive layer also forms an additional water barrier, which minimizes the amount of spray for the injection elastomer coating from above penetrating water. As a result, the total amount of water absorbed by the sprayed elastomer coating can be kept very low over many years.
    The water absorption can preferably be further reduced by using a polyurea spray coating as the spray elastomer coating. Due to the material, the polyurea spray coating has a water absorption capacity of only 0.3 - 1.5%. Polyurea contains no catalyst and is therefore very resistant to moisture. In addition, polyurea is characterized by the fact that it adheres better to the substrate even at low temperatures and cures completely even at low substrate temperatures and high humidity. Polyurea ·············································································································································································································································
    The polyurea spray coating is preferably applied in a layer thickness of 2-3 mm. In particular, the polyurea spray coating is applied in an amount of 2.5-3 kg / m 2.
    Advantageously, the application of the polyurea spray coating at 65 - 85 ° C and in particular by means of a high-pressure spraying at 140 - 210 bar.
    The primer preferably comprises epoxy resin or polyaspartic, preferably in an amount of 500-800 gr / m2. This ensures good adhesion of the sprayed elastomer coating on the substrate, in particular on the concrete of the structure, in particular the bridge. The primer can be applied in multiple layers if necessary. The adhesion is further increased by the sprinkling with quartz sand, with preference being given to using fire-dried quartz sand. The spreading with quartz sand takes place especially when the roughness of the ground is not sufficient.
    The adhesion primer, namely the epoxy resin is preferably applied in an amount of 400-500 gr / m2.
    As described above, the plastic granules, together with the bitumen emulsion or the bituminous latex emulsion, produce a bonding layer between the sprayed elastomer coating and the overlying supporting, covering or wear layer of the road structure, the emulsion φ φ # φ φ · The plastic granulate at the contact surfaces, above all with the primer-coated substrate, melts on the contact surfaces, ie, the plastic granulate melts on the contact surfaces, in particular with the primer-coated substrate.
    The applied wearing, covering or wearing layer, which is preferably an asphalt layer or a comparable hot mix, melts the bonding layer (plastic granulate and emulsion) so that it penetrates deep into the interstices of the irregular surface of the applied support, Covering or wear layer penetrates. In the process, an extremely stable and shear-resistant monolithic body is formed between the bonding layer (plastic granulate and emulsion) and the wearing, covering or wear layer applied thereto.
    The plastic granules preferably have a softening point of 125-140 ° C. for this purpose. Extruded polyolefins are preferably used as plastic granules, preferably in quantities of 600-1000 g / m 2. These are, for example, plastic granules made of polyethylene or polypropylene. The plastic granules advantageously have a diameter of 3 to 6 mm, wherein the diameter depends on the grain size of the aggregate contained in the supporting, covering or wearing layer to be applied thereon. The higher the grain size of the aggregate, the larger the diameter of the plastic granules should be selected.
    The invention will be explained in more detail with reference to an embodiment schematically illustrated in the drawing.
    On a corresponding pretreated substructure, a two-layer primer or seal 2 is applied based on an epoxy resin. The second layer of these greens will each be the one d sprinkled with quartz sand according to circumstances. Subsequently, as an injection elastomer, a (or hybrid) polyurea coating 3 is sprayed hot, this coating forming the actual sealing layer.
    On this coating 3 an adhesive primer 4 is applied over the entire surface epoxy resin-based. This is then sprinkled over the entire surface with a plastic granulate 5. Thereafter, a bitumen emulsion or a bitumen-latex emulsion 6 is applied, whereby the plastic granulate is stabilized and solidified and sufficient adhesive is present to ensure a durable and secure connection with the layer to be applied thereto (support, cover or wear layer). Finally, a support, cover or wear layer (such as asphalt layer) 7 is applied. The layer structure (shear composite) produced in this way can easily be traveled on with heavy construction vehicles, in particular with asphalt pavers, without the shifts or loosening of the individual layers, in particular of the plastic granulate, occurring. The layer structure (shear composite) remains stable even with strong component heating (for example due to solar radiation).
    权利要求:
    Claims (12)
    [1]
    • · · I I Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent 1. 1. 1. 1. 1.. on bridges for the subsequent application of a bearing, covering or wearing course of a road construction, in which the road surface is primed and optionally sprinkled with quartz sand, whereupon an injection elastomer coating is sprayed on, then applied an adhesive primer and this with a plastic granules over the entire surface is sprinkled, characterized in that as an adhesive primer, an epoxy resin is used and that on the plastic granules, a bitumen emulsion or bitumen latex emulsion is applied.
    [2]
    2. The method according to claim 1, characterized in that as a spray elastomer coating a polyurea or Polyureahybrid spray coating is used.
    [3]
    3. The method according to claim 1 or 2, characterized in that the primer comprises an epoxy resin or polyaspartic, preferably in an amount of 500 - 800 gr / m2.
    [4]
    4. The method according to claim 2 or 3, characterized in that the polyurea or Polyureahybrid spray coating is applied in a layer thickness of 2 - 3 mm.
    [5]
    5. The method of claim 2, 3 or 4, characterized in that the polyurea or Polyureahybrid spray coating is applied in an amount of 2.8-3 kg / m2. 12 12 ♦ ································································
    [6]
    6. The method according to any one of claims 2 to 5, characterized in that the application of the polyurea or Polyureahybrid spray coating at 65 - 85 ° C and in particular by means of a high-pressure spraying at 140 -210 bar.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the adhesive primer in an amount of 400 - 500 gr / m2 is applied.
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that as plastic granules extruded polyolefins are used, preferably in amounts of 600 - 1000 gr / m2.
    [9]
    9. The method according to claim 1 to 8, characterized in that the plastic matrix granules have a softening temperature of 125-140 ° C.
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the plastic granules have a diameter 3 - 6 mm.
    [11]
    11. The method according to any one of claims 1 to 10, characterized in that is applied as a support, cover or wearing layer of the road construction asphalt.
    [12]
    12. The method according to any one of claims 1 to 11, characterized in that the bitumen emulsion or the bitumen latex emulsion in amounts of 600 - 1000 gr / m2, in particular 13 13 • 9 9 9 9 9 9 9 9 9 ·· ················································································································································································································ Notified by: Vienna, June 12, 2012 Haffnei Patentar

    nd Keshmann old pG Ccli * -
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    法律状态:
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    PCT/AT2013/000099| WO2013185156A1|2012-06-12|2013-06-12|Method for producing a sealing for roadways|
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