EP0216148B1 - Bituminous surfacing for roads and process for making bituminous surfacings in the cold state for roads - Google Patents

Bituminous surfacing for roads and process for making bituminous surfacings in the cold state for roads Download PDF

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Publication number
EP0216148B1
EP0216148B1 EP19860111535 EP86111535A EP0216148B1 EP 0216148 B1 EP0216148 B1 EP 0216148B1 EP 19860111535 EP19860111535 EP 19860111535 EP 86111535 A EP86111535 A EP 86111535A EP 0216148 B1 EP0216148 B1 EP 0216148B1
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European Patent Office
Prior art keywords
layer
bituminous emulsion
chips
bituminous
active
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EP19860111535
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German (de)
French (fr)
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EP0216148A2 (en
EP0216148A3 (en
Inventor
Albert Kulterer
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Vialit Kaltasphalt GmbH
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Vialit Kaltasphalt GmbH
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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
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
    • 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
    • E01C11/005—Methods or materials for repairing pavings
    • 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
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • 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
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
    • E01C7/353—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively bituminous binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively bituminous binders, e.g. for roughening or clearing

Definitions

  • the invention relates to a method for producing bituminous coverings for roads, paths and the like in the cold process, wherein layers containing bitumen emulsion and optionally grit and other additives are deposited on a solid surface (subgrade, existing road surface, etc.) such as sand, cement and the like are applied.
  • a solid surface such as sand, cement and the like are applied.
  • the invention further relates to coverings produced thereafter.
  • Cold mix coverings tend to deform under heavy traffic loads. They have a very high void content, are not dense on the surface and take a very long time to reach their final strength. The latter is caused, among other things, by the necessary high so-called flux content.
  • Drinking blankets have a small bonded layer thickness and the coating of the mineral is not complete.
  • Such ceilings have a low load-bearing capacity, are very prone to deformation, it is difficult to check the installation quantities and the flatness depends on the shape of the plan.
  • the use of the binder is poor and there is a risk of the formation of binderless mineral layers.
  • the quality of such blankets is dependent on the weather.
  • Bitukiese have a high energy requirement and cause odor and transport nuisance when installed. If the material is transported over long distances, there is a risk of it being installed too cold. Also disadvantageous is the risk of the binder overheating, which leads to embrittlement. After cooling, the bituminous gravel acts as a rigid plate. If the binder content is too low, the surface may become lean, which in turn causes surface water to penetrate.
  • Soil stabilization suffers from the changing nature of the soil material. Furthermore, high mechanical energy consumption is necessary. Due to the presence of fine particles in the soil material, a homogeneous covering is not possible. The binder is not used optimally and the nature of the soil stabilization depends on the weather.
  • the present invention has for its object to provide a method for producing bituminous coverings which avoids the disadvantages mentioned above and is energy-efficient by using the cold construction.
  • the binder utilization should be improved and a high tightness on the surface should be achieved. Thanks to the high level of flexibility, substructure movements should be absorbed without the formation of cracks.
  • the method should make it possible to use conventional road construction machines. The visual impression compared to previous cold construction methods should be better, since precise lateral delimitation is made possible by the installation with finished products. Furthermore, the installation should be largely independent of the weather and should also be possible in cool, humid and damp weather, whereby there should be no loss of binder due to washing out after rain.
  • the method according to the invention is characterized in accordance with claim 1, characterized in that at least one layer I containing a charge-active bitumen emulsion and at least one layer II containing an oppositely charged bitumen emulsion are applied to the solid substrate.
  • a frost-proof grade 1 made of gravel is provided.
  • a gravel slab 2 which consisted of a layer 100 kg / m 2 with 2% anionic bitumen emulsion mineral 5/40 (100% broken), was applied.
  • the pre-coated mineral was installed with a paver so that straight edges were achieved. Installation with a grader or grit spreader is also possible.
  • the gravel slab 2 was compacted with a conventional roller with a weight of 4 to 7 tons.
  • next layer 6 2 to 3 kg / m 2 of likewise cationic 65-70% bitumen emulsion were applied by means of a ramp spraying device.
  • the cold asphalt surface made in this way has all the desired advantages.
  • the bituminous layer 2 results in the layer I, which here is composed of an anionic bitumen emulsion and the corresponding minerals.
  • Layers 3 to 7 form layer II, which contains the oppositely charged cationic bitumen emulsion.
  • the cold asphalt surface described in Example 1 is particularly advantageous in terms of its overall structure.
  • the grain structure is such that the largest grain diameter has 80% of the layer thickness. Only 100% broken material was used.
  • the smallest grain diameter should not be less than 10% of the layer thickness and the gradation of the grain distribution should be continuous from the smallest grain to the largest grain.
  • an optimal load-bearing capacity is obtained with the smallest possible void and binder requirements. The result is a good support effect and optimal readiness for compaction with little compaction work. With this cold installation method, there is a recompression by traffic.
  • the mineral can be mixed with the bitumen emulsion on any suitable, continuous or discontinuous mixing plant.
  • the layers 6, 7 serve to achieve the desired layer thickness and can be repeated or omitted as desired.
  • a thin-layer covering was applied in a cold process to an existing concrete pavement.
  • a conventional cold thin-layer covering 10 was applied to the pre-injection material, which contained cationic bitumen emulsion, grit and sand.
  • the emulsion breaks away so quickly and quickly and permanently sets between the thin-layer covering and the concrete surface.
  • the process according to the invention improves the adhesion of the road surface.
  • the marketability is increased and is reached faster.
  • Bituminous ceilings can be sealed well with the present method. Ruts of old coverings can be filled in satisfactorily.
  • the covering can also be applied in colder weather than was previously the case.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von im Kaltverfahren bituminös gebundener Beläge für Straßen, Wege u.dgl., wobei auf einem festen Untergrund (Planum, bestehender Straßenbelag, etc.) Schichten mit einem Gehalt an Bitumen- emulsion und gegebenenfalls Splitt und anderen Zuschlagstoffen, wie Sand, Zement u.dgl., aufgetragen werden. Weiters betrifft die Erfindung danach hergestellte Beläge.The invention relates to a method for producing bituminous coverings for roads, paths and the like in the cold process, wherein layers containing bitumen emulsion and optionally grit and other additives are deposited on a solid surface (subgrade, existing road surface, etc.) such as sand, cement and the like are applied. The invention further relates to coverings produced thereafter.

Die bisher bekannten Beläge sind mit Nachteilen behaftet.The previously known rubbers have disadvantages.

Kaltmischgutbeläge neigen bei stärkerer Verkehrsbelastung zu Verformungen. Sie weisen einen sehr hohen Hohlraumgehalt auf, sind an der Oberfläche nicht dicht und benötigen sehr lange, bis sie die Endfestigkeit erreichen. Letzteres ist unter anderem durch den notwendigen hohen sogenannten Fluxmittelanteil verursacht.Cold mix coverings tend to deform under heavy traffic loads. They have a very high void content, are not dense on the surface and take a very long time to reach their final strength. The latter is caused, among other things, by the necessary high so-called flux content.

Tränkdecken weisen geringe gebundene Schichtdicke auf und die Umhüllung des Minerals ist nicht vollständig. Solche Decken besitzen geringe Tragfähigkeit, neigen sehr stark zu Verformungen, die Kontrolle der Einbaumengen ist schwierig und die Ebenflächigkeit richtet sich nach der Form der Planie. Weiters ist die Ausnützung des Bindemittels mangelhaft und es besteht die Gefahr des Entstehens bindemittelloser Mineralschichten. Weiters ist die Qualität derartiger Decken witterungsabhängig.Drinking blankets have a small bonded layer thickness and the coating of the mineral is not complete. Such ceilings have a low load-bearing capacity, are very prone to deformation, it is difficult to check the installation quantities and the flatness depends on the shape of the plan. Furthermore, the use of the binder is poor and there is a risk of the formation of binderless mineral layers. Furthermore, the quality of such blankets is dependent on the weather.

Bitukiese haben einen hohen Energiebedarf und verursachen beim Einbau Geruchs- und Transportbelästigungen. Bei längeren Transportstrecken des Materials besteht die Gefahr des zu kalten Einbaues. Ebenso nach teilig ist die Gefahr einer Überhitzung des Bindemittels, wobei es zu einer Versprödung kommt. Nach der Abkühlung wirken die Bitukiese als starre Platte. Durch zu geringen Bindemittelgehalt kann es an der Oberfläche zu einer Ausmagerung kommen, was in der Folge das Eindringen von Oberflächenwasser verursacht.Bitukiese have a high energy requirement and cause odor and transport nuisance when installed. If the material is transported over long distances, there is a risk of it being installed too cold. Also disadvantageous is the risk of the binder overheating, which leads to embrittlement. After cooling, the bituminous gravel acts as a rigid plate. If the binder content is too low, the surface may become lean, which in turn causes surface water to penetrate.

Bodenstabilisierungen leiden unter wechselnder Beschaffenheit des Bodenmaterials. Weiters ist dabei hoher mechanischer Energieaufwand notwendig. Infolge vorhandener Feinanteile im Bodenmaterial ist eine homogene Umhüllung nicht möglich. Das Bindemittel wird nicht optimal ausgenützt und die Beschaffenheit der Bodenstabilisierung ist wetterabhängig.Soil stabilization suffers from the changing nature of the soil material. Furthermore, high mechanical energy consumption is necessary. Due to the presence of fine particles in the soil material, a homogeneous covering is not possible. The binder is not used optimally and the nature of the soil stabilization depends on the weather.

Die bisher durchgeführten Kaltbauweisen weisen Nachteile auf, die manchmal Anlaß dazu geben, warmaufgetragenen, bituminösen Belägen den Vorzug zu geben. Solche Nachteile liegen z.B. darin, daß die seitlichen Abgrenzungen nicht so genau eingehalten werden können. Weiters sind auch die aufzubringenden Einbaumengen im vorhinein nur schwierig zu kalkulieren. Bei Regenfällen kommt es zu einem Bindemittelverlust durch Ausschwemmen der Bitumenemulsion. Die Schichtdicken sind relativ gering.The cold construction methods carried out so far have disadvantages which sometimes give reason to give preference to hot-applied, bituminous coverings. Such disadvantages are e.g. in that the lateral boundaries cannot be adhered to as precisely. Furthermore, the installation quantities to be applied are difficult to calculate in advance. In the event of rain, there is a loss of binder due to the bitumen emulsion being washed out. The layer thicknesses are relatively small.

Ferner ist es bekannt, für verschiedene Anwendungszwecke im Straßenbau kationische oder anionische Bitumenemulsionen zu verwenden; vgl. Zeitschrift "Bitumen", Band 47, Nr. 2, 1985, Seiten 55-62.It is also known to use cationic or anionic bitumen emulsions for various applications in road construction; see. Journal "Bitumen", volume 47, No. 2, 1985, pages 55-62.

Die vorliegende Erfindung hat sich die Aufgabe gestellt, ein Verfahren zur Herstellung von bituminösen Belägen zu schaffen, das die obengenannten Nachteile vermeidet und durch Anwendung der Kaltbauweise energiegünstig ist. Die Bindemittelausnützung soll verbessert und eine hohe Dichtheit an der Oberfläche erzielt werden. Durch hohe Flexibilität sollen Unterbaubewegungen ohne Rissebildung aufgefangen werden. Weiters soll durch das Verfahren die Verwendung der herkömmlichen Straßenbaumaschinen möglich sein. Der optische Eindruck gegenüber früheren Kaltbauweisen soll besser sein, indem genaue seitliche Abgrenzungen durch den Einbau mit Fertigem ermöglicht wird. Weiters soll der Einbau weitgehend witterungsunabhängig sein und auch bei küh, ler und feuchter Witterung möglich werden, wobei es nach Regen keinen Bindemittelverlust durch Ausschwemmen geben soll.The present invention has for its object to provide a method for producing bituminous coverings which avoids the disadvantages mentioned above and is energy-efficient by using the cold construction. The binder utilization should be improved and a high tightness on the surface should be achieved. Thanks to the high level of flexibility, substructure movements should be absorbed without the formation of cracks. Furthermore, the method should make it possible to use conventional road construction machines. The visual impression compared to previous cold construction methods should be better, since precise lateral delimitation is made possible by the installation with finished products. Furthermore, the installation should be largely independent of the weather and should also be possible in cool, humid and damp weather, whereby there should be no loss of binder due to washing out after rain.

Das erfindungsgemäße Verfahren ist gemäß Anspruch 1 dadurch gekennzeichnet, daß auf dem festen Untergrund zumindest eine Schicht I, enthaltend eine ladungsaktive Bitumenemulsion, und darauf zumindest eine Schicht II, enthaltend eine entgegengesetzt geladene Bitumenemulsion, aufgetragen werden.The method according to the invention is characterized in accordance with claim 1, characterized in that at least one layer I containing a charge-active bitumen emulsion and at least one layer II containing an oppositely charged bitumen emulsion are applied to the solid substrate.

Einzelheiten der Erfindung sind den übrigen Patentansprüchen und der nachfolgenden Beschreibung zu entnehmen.Details of the invention can be found in the remaining claims and the description below.

Im Nachfolgenden wird die Erfindung anhand von Beispielen und den Skizzen Fig. 1 und 2 näher beschrieben.The invention is described in more detail below with the aid of examples and the sketches of FIGS. 1 and 2.

Beispiel 1example 1

Als Untergrund wurde wie bei jedem anderen Verfahren zur Herstellung von Straßen, Wegen u.dgl. ein frostsicheres Planum 1 aus Schotter vorgesehen.As a base, as with any other method for the production of roads, paths and the like. a frost-proof grade 1 made of gravel is provided.

Darauf wurde eine Kiestragdecke 2 aufgebracht, die aus einer Schicht 100 kg/m2 mit 2 % anionischer Bitumenemulsion vorumhüllten Mineral 5/40 (100 % gebrochen) bestand. Der Einbau des vorumhüllten Minerals erfolgte mit einem Fertiger, sodaß gerade Kanten erzielt wurden. Der Einbau mit Grader oder Splittstreugerät ist ebenfalls möglich. Die Kiestragdecke 2 wurde mit einer herkömmlichen Walze mit 4 bis 7 Tonnen Gewicht verdichtet.A gravel slab 2, which consisted of a layer 100 kg / m 2 with 2% anionic bitumen emulsion mineral 5/40 (100% broken), was applied. The pre-coated mineral was installed with a paver so that straight edges were achieved. Installation with a grader or grit spreader is also possible. The gravel slab 2 was compacted with a conventional roller with a weight of 4 to 7 tons.

Auf die Schicht 2 wurden ca. 10 kg/m2 gewaschener, kubisch gebrochener Splitt der Korngröße 4/8 mittels Splittstreugeräte aufgebracht (Schicht 3). Diese Schicht als Vorsplittung dient dem Porenschluß und Verkeilen. Sie ist vorteilhaft, kann aber auch entfallen. Nach leichtem Anwalzen wurde auf diese Schicht 2 bis 3 kg/m2 kationische 65 - 70 %-ige Bitumenemulsion mit einem Rampenspritzgerät aufgetragen (Schicht 4) und danach ca. 15 bis 20 kg/m2 gewaschener, kubischer, gebrochener Splitt der Korngröße 4/8 mittels Splittstreugerät aufgebracht und gut angewalzt (Schicht 5).About 10 kg / m 2 of washed, cubically broken grit of grain size 4/8 were applied to layer 2 by means of grit spreaders (layer 3). This layer serves as a pre-splitting for pore closure and wedging. It is advantageous, but can also be omitted. After gentle rolling, 2 to 3 kg / m 2 of cationic 65-70% bitumen emulsion was applied to this layer using a ramp spraying device (layer 4) and then approx. 15 to 20 kg / m2 of washed, cubic, broken chippings of grain size 4 / 8 applied using a grit spreader and rolled on well (layer 5).

Als nächste Schicht 6 wurden 2 bis 3 kg/m2 ebenfalls kationische 65 - 70 %-ige Bitumenemulsion mittels eines Rampenspritzgerätes aufgetragen.As the next layer 6, 2 to 3 kg / m 2 of likewise cationic 65-70% bitumen emulsion were applied by means of a ramp spraying device.

Als oberste Schicht 7 erfolgte die Aufbringung von ca. 15 bis 20 kg/m2 kubisch gebrochenem und gewaschenem Splitt der Korngröße 2/4, um Porenschluß zu erzielen. Die fertige Oberfläche wurde gewalzt und der Überschußsplitt wurde nach entsprechender Einfahrzeit abgekehrt.About 15 to 20 kg / m 2 of cubically broken and washed chippings with a grain size of 2/4 μm were applied as the top layer 7 to achieve conclusion. The finished surface was rolled and the excess chippings were swept off after a corresponding run-in period.

Die so angefertigte Kaltasphaltdecke weist alle gewünschten Vorteile auf. Die bituminöse Schicht 2 ergibt die Schicht I, die hier aus einer anionischen Bitumenemulsion und den entsprechenden Mineralien zusammengesetzt ist. Die Schichten 3 bis 7 bilden die Schicht II, die die entgegengesetzt geladene kationische Bitumenemulsion enthält.The cold asphalt surface made in this way has all the desired advantages. The bituminous layer 2 results in the layer I, which here is composed of an anionic bitumen emulsion and the corresponding minerals. Layers 3 to 7 form layer II, which contains the oppositely charged cationic bitumen emulsion.

Bei Kontakt der verschieden geladenen Emulsionstypen (somit zwischen Schichten 2 und 4) kommt es zu einem sofortigen Brechen der Emulsion. Dadurch wird das Bindemittel, nämlich der Bitumen der Emulsion, im oberen Belagsbereich festgehalten. Ein Auswaschen der Emulsion ist damit nicht möglich.When the differently charged emulsion types come into contact (between layers 2 and 4), the emulsion breaks immediately. As a result, the binder, namely the bitumen of the emulsion, is held in the upper covering area. It is not possible to wash the emulsion out.

Es ist für die Anwendung der vorliegenden Erfindung unerheblich, welche der beiden Emulsionstypen (anionisch oder kationisch) zuerst aufgetragen wird. Wesentlich ist die aufeinanderfolgende Einwirkung verschiedener Emulsionstypen. Hinsichtlich verwendbarer Bitumenemulsionen wird auf die Veröffentlichung "Bitumen-emulsion", Fachverband der Kaltasphaltindustrie e.V., D-2000 Norderstedt, 1983, verwiesen.It is irrelevant for the application of the present invention which of the two types of emulsion (anionic or cationic) is applied first. The successive action of different emulsion types is essential. With regard to usable bitumen emulsions, reference is made to the publication "Bitumen-emulsion", Fachverband der Kaltasphaltindustrie e.V., D-2000 Norderstedt, 1983.

Die in Beispiel 1 beschriebene Kaltasphaltdecke ist vom Gesamtaufbau her besonders vorteilhaft. Der Kornaufbau ist derart, daß der Größtkorndurchmesser 80 % der Schichtstärke aufweist. Es wurde nur 100 % gebrochenes Material verwendet. Der Kleinstkorndurchmesser sollte 10 % der Schichtstärke nicht unterschreiten und die Abstufung der Kornverteilung soll vom Kleinstkorn bis zum Größtkorn kontinuierlich sein. Bei diesem Kornaufbau erhält man eine optimale Tragfähigkeit bei geringstmöglichem Hohlraum und Bindemittelbedarf. Es ergibt sich ein gu ter Abstützeffekt und optimale Verdichtungswilligkeit bei geringer Verdichtungsarbeit. Eine Nachverdichtung durch den Verkehr ist bei dieser Kalteinbauweise gegeben.The cold asphalt surface described in Example 1 is particularly advantageous in terms of its overall structure. The grain structure is such that the largest grain diameter has 80% of the layer thickness. Only 100% broken material was used. The smallest grain diameter should not be less than 10% of the layer thickness and the gradation of the grain distribution should be continuous from the smallest grain to the largest grain. With this grain structure, an optimal load-bearing capacity is obtained with the smallest possible void and binder requirements. The result is a good support effect and optimal readiness for compaction with little compaction work. With this cold installation method, there is a recompression by traffic.

Durch die Vorumhüllung der Mineralien in Schicht 2 erzielt man eine Flächenverklebung, wobei bereits bei einmaligem Walzvorgang eine hohe Standfestigkeit erreicht wird. Das Mischen des Minerals mit der Bitumenemulsion kann auf jeder geeigneten, kontinuierlichen oder diskontinuierlichen Mischanlage erfolgen.By pre-coating the minerals in layer 2, a surface bond is achieved, with a high level of stability being achieved even with a single rolling process. The mineral can be mixed with the bitumen emulsion on any suitable, continuous or discontinuous mixing plant.

Durch das Vorsplitten mit dem Splittstreugerät von 10 kg/m2 der Korngröße 4/8 (Schicht 3) erzielt man bereits einen gewissen oberflächigen Porenverschluß. Die Schichten 6, 7 dienen der Erzielung der gewünschten Schichtdicke und können beliebig wiederholt oder auch fortgelassen werden.Pre-splitting with the grit spreader of 10 kg / m2 of grain size 4/8 (layer 3) already achieves a certain surface pore seal. The layers 6, 7 serve to achieve the desired layer thickness and can be repeated or omitted as desired.

Wenn in Fig. 1 die Schichten 3 bis 7 übereinander streng getrennt voneinander gezeichnet, sind, so verdeutlicht dies nur die Reihenfolge des Auftragens. In der Praxis gegen die Schichten ineinander über, was strichliert in den Schichten 3 und 5 angedeutet ist.If the layers 3 to 7 are drawn strictly separated from one another in FIG. 1, this only illustrates the order of application. In practice against each other, what is indicated by dashed lines in layers 3 and 5.

Beispiel 2Example 2

Auf einen bereits vorhandenen Straßenbelag aus Beton wurde gemäß vorliegender Erfindung ein Dünnschichtbelag im Kaltverfahren aufgetragen.According to the present invention, a thin-layer covering was applied in a cold process to an existing concrete pavement.

Auf die vorhandene Betondecke 8 wurde als Vorspritzmaterial 20 bis 50 %-ige anionische Bitumen- emulsion 9 aufgespritzt. Die Menge betrug etwa 15 g/m2. Das Vorspritzmaterial bildet in der Fig. 2 die Schicht I.20 to 50% anionic bitumen emulsion 9 was sprayed onto the existing concrete ceiling 8 as the pre-spraying material. The amount was about 15 g / m2. The injection molding material forms the layer I in FIG. 2.

Auf das Vorspritzmaterial wurde ein üblicher kalter Dünnschichtbelag 10 aufgetragen, der kationische Bitumenemulsion, Splitt und Sand enthielt.A conventional cold thin-layer covering 10 was applied to the pre-injection material, which contained cationic bitumen emulsion, grit and sand.

Beim Zusammentreffen der beiden Emulsionstypen kommt es zu einem so fortigen Brechen der Emulsion und einer raschen und dauerhaften Abbindung zwischen dem Dünnschichtbelag und der Betondecke.When the two types of emulsion come together, the emulsion breaks away so quickly and quickly and permanently sets between the thin-layer covering and the concrete surface.

Anstelle der Betonfläche kann auch z.B. eine Asphaltfläche jeder herkömmlichen Bauart vorliegen. Das Auftragen des beschriebenen Dünnschichtbelages ist vor allem für die Regenerierung derartiger Straßenflächen geeignet.Instead of the concrete surface, e.g. there is an asphalt surface of any conventional type. The application of the thin-film covering described is particularly suitable for the regeneration of such road surfaces.

Durch das erfindungsgemäße Verfahren kommt es zu einer Verbesserung der Haftung des Stra- ßenbelages. Die Verkehrsfähigkeit wird erhöht und wird schneller erreicht. Bitukiesdecken können mit dem gegenständlichen Verfahren gut abgedichtet werden. Spurrillen alter Beläge können in zufriedenstellender Weise aufgefüllt werden. Das Aufbringen des Belages ist auch bei kälterem Wetter möglich als dies früher der Fall war.The process according to the invention improves the adhesion of the road surface. The marketability is increased and is reached faster. Bituminous ceilings can be sealed well with the present method. Ruts of old coverings can be filled in satisfactorily. The covering can also be applied in colder weather than was previously the case.

Die Zugabe von Fluxmitteln und Stabilisatoren zu den Bitumenemulsionen kann vorteilhaft sein. Weiters können auch übliche Zuschlagstoffe vorgesehen sein (wie z.B. Zement zur Wasserbindung).The addition of fluxes and stabilizers to the bitumen emulsions can be advantageous. In addition, customary aggregates can also be provided (such as cement for water retention).

Claims (11)

1. A method of production for roads, paths and the like, of surfacings bitumen-bonded by the cold process, in which on a solid foundation (subgrade, existing road surface, etc.) layers are applied with a content of bituminous emulsion and if necessary chips and other aggregates such as sand, cement and the like, characterized in that
- upon the solid foundation at least one layer (I) is applied which contains one charge-active bituminous emulsion, and over that
- at least one layer (II) which contains an oppositely charged bituminous emulsion.
2. A method as in Claim 1, characterized in that as layer (2) of road metal is applied.
3. A method as in Claims 1 and 2, characterized in that as layer (II), if necessary after precoating with chips (3), the oppositely charge-active bituminous emulsion (4) is applied and following upon that a layer of chips (5) and if necessary still further layers (6, 7) of bituminous emulsion and chips.
4. A method as in Claims 1 to 3, characterized in that referred to the total build-up of the layers (I) and (II) road metal is employed of a maximum grain diameter of about 80% of the total thickness of layer and a minimum grain diameter of not less than about 10% of the total thickness of layer, the gradation of the grain distribution running essentially continuously.
5. A method as in one of the preceding Claims, characterized in that as the prebitumenized layer of road metal one is applied of grain size 5/40 in amounts of about 100 kg/m2 with 2% of charge-active bituminous emulsion (layer I) and over that for the wedging about 10 kg/m2 of chips of grain size 4/8, and after rolling 2 to 3kg/m2 of oppositely chargeactive bituminous emulsion is applied and over that a layer (5) of 15-20 kg/m2 of grain size 4/8 (layer II).
6. A method as in Claim 5, characterized in that as layer (II) 10kg/m2 of chips of grain size 4/8 is applied, and after rolling 2 to 3kg/m2 of oppositely charge-active bituminous emulsion and over that a layer (5) of 15-20kg/m2 of chips of grain size 4/8 are applied and rolled down and 2 to 3 kg/m2 of oppositely charged bituminous emulsion (6) is applied and then over that a further layer (7) of chips.
7. A method as Claim 1, characterized in that the layer (I) is applied as a charge-active bituminous emulsion to an existing surface (asphalt or concrete) and that then as layer (II) a thin-layer coating is applied, containing the oppositely charged bituminous emulsion (II) and aggregates such as chips and sand.
8. A bituminous surfacing for roads, paths and the like, characterized in that two bituminous layers (I and II) lying upon one another are provided, the one layer (I) exhibiting one charge-active bituminous emulsion and the other layer (II) an oppositely charge-active bituminous emulsion.
9. A surfacing as in Claim 8, characterized in that the layer (I) is a charge-active prebitumenized layer (2) of road metal.
10. A surfacing as in one of the Claims 8 or 9, characterized in that the layer (II) exhibits at least one layer (4) of oppositely charge-active bituminous emulsion and chips.
11. A surfacing as in Claim 8, characterized in that the layer (I) is a charge-active bituminous emulsion (9) and the layer (II) is a thinlayer coating (10) containing the oppositely charged bituminous emulsion (II) and aggregates such as chips and sand.
EP19860111535 1985-09-11 1986-08-20 Bituminous surfacing for roads and process for making bituminous surfacings in the cold state for roads Expired EP0216148B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT266385A AT386028B (en) 1985-09-11 1985-09-11 BITUMINOUS COVERING FOR ROADS, ROADS AND THE LIKE, AND METHOD FOR THE PRODUCTION OF COOLING BITUMINOES COVERED FOR ROADS, ROADS AND THE LIKE BITUMINOES
AT2663/85 1985-09-11

Publications (3)

Publication Number Publication Date
EP0216148A2 EP0216148A2 (en) 1987-04-01
EP0216148A3 EP0216148A3 (en) 1987-10-21
EP0216148B1 true EP0216148B1 (en) 1989-10-11

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EP19860111535 Expired EP0216148B1 (en) 1985-09-11 1986-08-20 Bituminous surfacing for roads and process for making bituminous surfacings in the cold state for roads

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EP (1) EP0216148B1 (en)
AT (1) AT386028B (en)
DE (1) DE3666243D1 (en)

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DE102010011114A1 (en) * 2010-03-11 2011-09-15 Sf-Kooperation Gmbh Beton-Konzepte Soil cover and method of making the same

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GB9306290D0 (en) * 1993-03-26 1993-05-19 Exxon Research Engineering Co Bituminous surface construction
AT519993B1 (en) * 2017-05-19 2021-10-15 Oesterreichische Vialit Ges M B H Bituminous building material

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CH298445A (en) * 1951-02-14 1954-05-15 Zeller & Gmelin Process for the production of building materials suitable for road surfaces.
CH338265A (en) * 1954-02-19 1959-05-15 Bataafsche Petroleum Reversible water-in-oil type emulsion for coating mineral aggregates and other solid material with a thin adherent hydrophobic layer, its manufacture and use
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DE102010011114A1 (en) * 2010-03-11 2011-09-15 Sf-Kooperation Gmbh Beton-Konzepte Soil cover and method of making the same
WO2011110286A3 (en) * 2010-03-11 2012-07-26 Sf-Kooperation Gmbh Beton-Konzepte Ground cover and method for producing the same

Also Published As

Publication number Publication date
DE3666243D1 (en) 1989-11-16
EP0216148A2 (en) 1987-04-01
AT386028B (en) 1988-06-27
ATA266385A (en) 1987-11-15
EP0216148A3 (en) 1987-10-21

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