EP0730693A1 - Process for producing a two-layered asphalt covering - Google Patents

Process for producing a two-layered asphalt covering

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Publication number
EP0730693A1
EP0730693A1 EP95902030A EP95902030A EP0730693A1 EP 0730693 A1 EP0730693 A1 EP 0730693A1 EP 95902030 A EP95902030 A EP 95902030A EP 95902030 A EP95902030 A EP 95902030A EP 0730693 A1 EP0730693 A1 EP 0730693A1
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EP
European Patent Office
Prior art keywords
asphalt
binder
layers
layer
producing
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.)
Granted
Application number
EP95902030A
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German (de)
French (fr)
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EP0730693B1 (en
Inventor
Elk Richter
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Individual
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Individual
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Priority claimed from DE4342999A external-priority patent/DE4342999A1/en
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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
    • 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

Definitions

  • the invention relates to a method for producing a two-layer asphalt surface with which the properties of the asphalt layers are optimized.
  • asphalt pavements are produced from several layers using different types of mix.
  • the mix is installed in layers or - if the same mix types are processed - in layers one above the other.
  • bitumen emulsions are sprayed onto the cold surface.
  • Asphalt pavements are used on roads and other traffic areas.
  • the overall strength of the structure and that of the individual layers depends primarily on the loads that occur.
  • the asphalt pavements consist of a top, binder and base course. Different requirements are imposed on the individual layers.
  • the main requirements for the top layer are:
  • binder layers must primarily be stable.
  • the asphalt base layer serves for the harmless absorption and dissipation of the occurring tensions in the areas below. They must also be assembled in a stable manner.
  • Binder and base layers are protected by the cover layer and therefore have no sealing functions.
  • cover layers are installed with a thickness of 4 cm.
  • the nominal thicknesses of the binder and asphalt base courses vary depending on the construction class in accordance with applicable building regulations, such as RStO 86/89. / Arand and others: Investigation of the effectiveness of high-performance compaction screeds by field measurements on current ones Construction sites, road and highways, Bonn 41 (1990) No. 5 pp. 215 - 219.
  • the cover and partly also the binder up to the base layers are involved in the damage due to deformation.
  • the causes lie mainly in the material composition and the compression.
  • top layers represent a particular problem, especially since the multitude of tasks require very different conceptual decisions.
  • the single-layer asphalt paving customary in the prior art in which the next layer is installed on a cold or already largely cooled base, causes constraints and quality defects, particularly in the case of the relatively thin cover and binder layers.
  • it is known to produce two-layer asphalt coverings by heating the existing, usually defective asphalt, and distributing it on the construction site or mixing it with other asphalt components. Due to the relatively low thermal conductivity of the asphalt, the bitumen is subjected to very different temperatures when it is heated.
  • the quality of the components distributed or mixed on the road is subject to greater fluctuations compared to the asphalt produced by the mixing process on an asphalt plant, since the ratio of old and new components is less accurate and the compositions often have different compositions .
  • the invention is based on the object of specifying a method for producing a two-layer asphalt covering from two ready-to-deliver mix types, with which the total paving thickness is increased considerably and the layer thickness ratio, the composition and thus properties are optimized.
  • the optimization relates in particular to the degree of compression without increasing the compression energy.
  • this object is achieved in that the upper layers of the asphalt pavement are installed in one step in hot paving and the layer thickness ratio is changed among one another.
  • This relates to the simultaneous installation of asphalt binder plus top layer and, in the case of less frequented roads, asphalt base plus top layer and the combination of asphalt base layer and asphalt binder.
  • the direct hot-on-hot laying ensures an optimal bond between the layers.
  • the deformation behavior associated with lateral deflection (sliding) is thus improved.
  • the simultaneous installation in two layers allows the asphalt formulations to be changed to more stable and mixtures, since the level of compaction in both layers of the asphalt is increased considerably and the void content can thus be reduced at the same time.
  • a high storage density can only be achieved with sufficient installation thicknesses. In general, this requires a ratio of layer thickness to large grain of approx. 3: 1 in the traditional construction. This results e.g. the paving thickness of 4 cm for asphalt concrete 0/11 mm.
  • FIG. 1 shows the dependence of the compression time on the layer thickness
  • Figure 2 shows the influence of the temperature of the mixed material on the density (RG) or the degree of compaction (VD).
  • 10 cm asphalt base course Type CS 0/32 mm and 4 cm asphalt binder 0/16 mm are installed at the same time.
  • the compaction time is considerably extended and the level of compaction levels is increased on both layers. This leads to a significant increase in the resistance to deformation on both layers and there are no substance losses on the asphalt binder, as can often be found hot to cold in the installation customary in the prior art.
  • the stone mastic 0/11 mm can be compacted much more effectively than 4 cm on a cold surface.
  • the entire ceiling becomes considerably more stable while maintaining the other functions of the top layer.
  • the asphalt binder has a higher storage density and is therefore more resistant to deformation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Revetment (AREA)

Abstract

A process for producing a two-layered asphalt coating from two types of ready-to-use mixes should increase the total strength of the structure and optimise the composition and properties of the asphalt covering. For that purpose, the top layers of the asphalt fortification are hot poured in a single operation. A process is disclosed for producing a two-layered asphalt covering that optimises the properties of the asphalt layers.

Description

Verfahren zum Herstellen eines zweischichtigen As- phaltbelaqes Process for producing a two-layer asphalt paving
Die Erfindung betrifft ein Verfahren zum Herstellen eines zweischichtigen Asphaltbelages mit dem eine Optimierung der Eigenschaften der Asphaltschichten bewirkt wird.The invention relates to a method for producing a two-layer asphalt surface with which the properties of the asphalt layers are optimized.
Nach dem im Stand der Technik bekannten Verfahren werden Asphaltbefestigungen aus mehreren Schichten unter Verwendung unterschiedlicher MischgutSorten hergestellt. Der Einbau des Mischgutes erfolgt da- bei in Schichten oder - wenn gleiche Mischgutsorten verarbeitet werden - in Lagen übereinander. Zum Verkleben der Schichten werden Bitumenemulsionen auf die kalte Unterlage aufgespritzt. Asphaltbefestigungen werden auf Straßen sowie für andere Verkehrsflächen angewendet.According to the method known in the prior art, asphalt pavements are produced from several layers using different types of mix. The mix is installed in layers or - if the same mix types are processed - in layers one above the other. To glue the layers, bitumen emulsions are sprayed onto the cold surface. Asphalt pavements are used on roads and other traffic areas.
Die Gesamtstärke des Aufbaus sowie die der einzel¬ nen Schichten richtet sich hauptsächlich nach dem auftretenden Belastungen. Im allgemeinen bestehen die Asphaltbefestigungen aus Deck-, Binder- und Tragschicht. An die einzel¬ nen Schichten werden unterschiedliche Anforderungen gestellt.The overall strength of the structure and that of the individual layers depends primarily on the loads that occur. In general, the asphalt pavements consist of a top, binder and base course. Different requirements are imposed on the individual layers.
Für die Deckschicht sind hauptsächlich folgende An¬ forderungen wesentlich:The main requirements for the top layer are:
Ersateblatt - Aus Gründen der Verkehrssicherheit sind gute Griffigkeit, hohe Ebenheit, Helligkeit und mög¬ lichst hohes Reflexionsvermögen wichtig; zur Gewährleistung einer hohen Witterungsbe- ständigkeit sind Abdichtung, Frost- und Raum-be- ständigkeit, Haftung des Bindemittels und Oxyda¬ tionsbeständigkeit erforderlich undSpare sheet Good grip, high evenness, brightness and the highest possible reflectivity are important for reasons of traffic safety; in order to ensure a high weather resistance, sealing, frost and room resistance, adhesion of the binder and resistance to oxidation are necessary and
- zur Sicherung einer ausreichenden Festigkeit müs¬ sen Flexibilität, Verschleiß- und Stand- sowie Er- müdungsfestigkeit gegeben sein.- To ensure sufficient strength, flexibility, wear, stability and fatigue resistance must be provided.
Die Binderschicht hat bei den heutigen Belastungen durch Schwerverkehr die Hauptaufgabe, die Schub¬ spannung schadlos aufzunehmen und abzuleiten. Aus diesem Grund müssen Binderschichten in erster Linie standfest sein.With today's heavy traffic loads, the binder course has the main task of absorbing and discharging the shear stress without damage. For this reason, binder layers must primarily be stable.
Die Asphalttragschicht dient der schadlosen Auf¬ nahme und Ableitung der auftretenden Spannungen in die darunter liegenden Bereiche. Sie müssen eben¬ falls standfest zusammengesetzt sein.The asphalt base layer serves for the harmless absorption and dissipation of the occurring tensions in the areas below. They must also be assembled in a stable manner.
Binder- und Tragschicht werden durch die Deck¬ schicht geschützt und haben somit keinerlei Dich- tungsaufgaben.Binder and base layers are protected by the cover layer and therefore have no sealing functions.
Im allgemeinen werden die Deckschichten in einer Stärke von 4 cm eingebaut. Die Solldicken der Bin¬ der- und Asphalttragschichten variieren in Ab- hangigkeit von der Bauklasse entsprechend gültigen Bauvorschriften, wie dem RStO 86/89. / Arand u.a. : Untersuchung der Wirksamkeit von Hochleistungsver- dichtungsbohlen durch Feldmessungen auf laufenden Baustellen , Straße und Autobahnen, Bonn 41 (1990) Nr. 5 S. 215 - 219.In general, the cover layers are installed with a thickness of 4 cm. The nominal thicknesses of the binder and asphalt base courses vary depending on the construction class in accordance with applicable building regulations, such as RStO 86/89. / Arand and others: Investigation of the effectiveness of high-performance compaction screeds by field measurements on current ones Construction sites, road and highways, Bonn 41 (1990) No. 5 pp. 215 - 219.
Die Entwicklung des Asphaltstraßenbaues der letzten Jahrzehnte war durch eine Optimierung der einzelnen Schichten hinsichtlich Zusammensetzung, Schicht¬ stärke und Verdichtung gekennzeichnet, um den stän¬ dig steigenden Belastungen aus dem Anwachsen der Verkehrsbelastungszahlen und der Erhöhung der Achs- lasten zu entsprechen. Der Einfluß der Achslasten auf das Gebrauchsverhalten wird allgemein nach den Ergebnissen des AASHO-ROAD-Testes bestimmt. Danach steigen die Ermüdungs- und Verformungsschäden unge¬ fähr mit der 4. Potenz der Achslast.The development of asphalt road construction in recent decades has been characterized by an optimization of the individual layers with regard to composition, layer thickness and compaction, in order to correspond to the constantly increasing loads from the increase in traffic loads and the increase in axle loads. The influence of the axle loads on the usage behavior is generally determined according to the results of the AASHO-ROAD test. Thereafter, the fatigue and deformation damage increase approximately with the 4th power of the axle load.
Gerade die zunehmende Achslast sowie Überladungen und der Anstieg des Schwerverkehrs durch das stän¬ dig steigende Transportaufkommen auf der Straße hat zu einer erhöhten Schadenshäufigkeit geführt. Dabei läuft die Entwicklung der Straßenbautechnologien meistens nur den Entwicklungen der Anforderungen, hinterher.The increasing axle load, overloading and the increase in heavy traffic due to the constantly increasing volume of transport on the road have led to an increased frequency of damage. The development of road construction technologies usually only follows developments in requirements.
An den Schäden infolge Verformung sind die Deck- und teilweise auch die Binder- bis hin zu den Trag- schichten beteiligt. Die Ursachen liegen überwie¬ gend in der Materialzusammensetzung und der Ver¬ dichtung.The cover and partly also the binder up to the base layers are involved in the damage due to deformation. The causes lie mainly in the material composition and the compression.
Ein besonderes Problem stellen die Deckschichten dar, zumal die Vielzahl der Aufgaben recht unter- schiedliche konzeptionelle Entscheidungen verlan¬ gen. So verhalten sich z. B. Abdichtung und Stand¬ festigkeit gegenläufig. Bedingt durch die Abdichtungsfunktion ist die Deck¬ schicht die bindemittelreichste Schicht, gleichzei¬ tig treten hier die größtmöglichen Temperaturen auf. Infolge der thermoplastischen Eigenschaften des Bitumens hat das Deckschichtmaterial im Sommer die geringsten Scherfestikeiten.The top layers represent a particular problem, especially since the multitude of tasks require very different conceptual decisions. B. sealing and stability in opposite directions. Due to the sealing function, the top layer is the layer rich in binder, and at the same time the highest possible temperatures occur here. Due to the thermoplastic properties of the bitumen, the top layer material has the lowest shear strength in summer.
Ein weiteres Problem, das für den Asphal Straßenbau von immenser Bedeutung ist, stellt der Einbau bei ungünstigen Einbaubedingungen dar.Another problem that is of immense importance for Asphal road construction is the installation in unfavorable installation conditions.
Daraus resultiert bei den häufig einzubauenden Deck- und Binderschichten von jeweils 4 cm Schicht¬ stärke eine zu geringe Verdichtungszeit bzw. eine zu schnelle Abkühlung des Asphaltmischgutes. Mit dem gleichen Verdichtungsaufwand gegenüber dickeren Einbaustärken werden bei geringen Stärken infolge schneller Auskühlung geringere Verdichtungsgrade erzielt.This results in a too short compaction time or a too rapid cooling of the asphalt mixture with the frequently to be installed cover and binder layers of 4 cm layer thickness. With the same compaction effort compared to thicker paving thicknesses, lower compaction levels are achieved with low thicknesses due to rapid cooling.
Im Stand der Technik ist es bekannt, die Verdich- tungswilligkeit dadurch zu verbessern, daß der Bin¬ demittelgehalt erhöht wird. Dies führt jedoch zu Abnahmen der Scherfestigkeit. Generell beinhaltet ein geringer Verdichtungsgrad eine exponentielle Abnahme z. B. der Standfestigkeit.It is known in the prior art to improve the willingness to compact by increasing the binder content. However, this leads to decreases in shear strength. Generally, a low degree of compaction involves an exponential decrease e.g. B. the stability.
Der im Stand der Technik übliche einschichtige As¬ phalteinbau, bei dem auf eine kalte oder schon wei- testgehend abgekühlte Unterlage die nächste Schicht eingebaut wird, verursacht gerade bei den relativ dünnen Deck- und Binderschichten Zwänge sowie Qua¬ litätsmängel. Bei der Sanierung von Asphaltbelägen ist es bekannt, zweischichtige Asphaltbeläge dadurch zu erzeugen, daß der vorhandene meist schadhafte As¬ phalt erhitzt und auf der Baustelle verteilt oder mit anderen Asphaltkomponenten vermischt wird. Durch die relativ geringe Wärmeleitfähigkeit des Asphaltes wird das Bitumen sehr unterschiedlichen Temperaturen beim Aufheizen unterworfen.The single-layer asphalt paving customary in the prior art, in which the next layer is installed on a cold or already largely cooled base, causes constraints and quality defects, particularly in the case of the relatively thin cover and binder layers. In the rehabilitation of asphalt coverings, it is known to produce two-layer asphalt coverings by heating the existing, usually defective asphalt, and distributing it on the construction site or mixing it with other asphalt components. Due to the relatively low thermal conductivity of the asphalt, the bitumen is subjected to very different temperatures when it is heated.
An der Oberseite der Aspaltschicht treten dabei Temperaturen von 250 - 600°C auf, die nach unten sehr stark Abnehmen. Diese hohen Temperaturen füh¬ ren zu erhöhten umweltbelastenden Emissionen sowie Veränderungen der Bitumeneigenschaften.Temperatures of 250 - 600 ° C occur at the top of the asphalt layer, which decrease very strongly downwards. These high temperatures lead to increased environmentally harmful emissions and changes in the bitumen properties.
Weiterhin unterliegt die Qualität der auf der Straße verteilten oder gemischten Komponenten grö¬ ßeren Schwankungen gegenüber den durch den Misch¬ vorgang an einer Asphaltanlage erzeugten Asphalt, da das Verhältnis Alt- und Neukomponente weniger genau einzuhalten ist und im Baulos bereits oft un¬ terschiedliche Zusammensetzungen vorliegen.Furthermore, the quality of the components distributed or mixed on the road is subject to greater fluctuations compared to the asphalt produced by the mixing process on an asphalt plant, since the ratio of old and new components is less accurate and the compositions often have different compositions .
Der Erfindung liegt die Aufgabe zugrunde, ein Ver- fahren zum Herstellen eines zweischichtigen As¬ phaltbelages aus zwei lieferfertigen Mischgutsorten anzugeben, mit dem die Gesamteinbaustärken wesent¬ lich erhöht und das Schichtstärkeverhältnis die Zu¬ sammensetzung und somit Eigenschaften optimiert werden. Die Optimierung bezieht sich insbesondere auf den Verdichtungsgrad ohne Erhöhung der Verdich¬ tungsenergie. Erfindungsgemäß gelingt die Lösung dieser Aufgabe dadurch, daß die oberen Schichten der Asphaltbefe¬ stigung im Heißeinbau in einem Arbeitsgang einge¬ baut werden und das Schichtstärkenverhältnis unter- einander verändert wird.The invention is based on the object of specifying a method for producing a two-layer asphalt covering from two ready-to-deliver mix types, with which the total paving thickness is increased considerably and the layer thickness ratio, the composition and thus properties are optimized. The optimization relates in particular to the degree of compression without increasing the compression energy. According to the invention, this object is achieved in that the upper layers of the asphalt pavement are installed in one step in hot paving and the layer thickness ratio is changed among one another.
Durch den gleichzeitigen Einbau von zwei verschie¬ denen und heiß auf heiß übereinanderliegenden As¬ phaltschichten aus angeliefertem Mischgut von der Asphaltanlage wird das Wärmepotential erhöht und die Abkühlung verzögert, dadurch gelingt es, die Eigenschaften dieser beiden Asphaltschichten erheb¬ lich zu verbessern.The simultaneous installation of two different asphalt layers from the mix delivered hot on hot asphalt layers from the asphalt plant increases the heat potential and delays the cooling, which means that the properties of these two asphalt layers can be considerably improved.
Dies betrifft den gleichzeitigen Einbau von As¬ phaltbinder plus Deckschicht sowie bei geringer frequentierten Straßen Asphalttrag- plus Deck¬ schicht sowie die Kombination von Asphalttrag¬ schicht und Asphaltbinder.This relates to the simultaneous installation of asphalt binder plus top layer and, in the case of less frequented roads, asphalt base plus top layer and the combination of asphalt base layer and asphalt binder.
Weiterhin wird durch die direkte Heiß-auf-Heiß-Ver- legung ein optimaler Verbund der Schichten erzielt. Das mit einem seitlichen Ausweichen (Gleiten) ver¬ bundene Verformungsverhalten wird so verbessert. Der gleichzeitige zweischichtige Einbau erlaubt eine Veränderung der Asphaltrezepturen zu standfe¬ steren und Gemischen, da das Niveau der Verdich¬ tungsgrade in beiden Schichten des Asphalts erheb¬ lich erhöht wird und somit gleichzeitig der Hohl- raumgehaltreduziert werden kann.Furthermore, the direct hot-on-hot laying ensures an optimal bond between the layers. The deformation behavior associated with lateral deflection (sliding) is thus improved. The simultaneous installation in two layers allows the asphalt formulations to be changed to more stable and mixtures, since the level of compaction in both layers of the asphalt is increased considerably and the void content can thus be reduced at the same time.
Wirtschaftliche Vorteile bildet die Reduzierung des teueren Deckschichtmaterials. Außerdem können ver- besserte Bindemittel und/oder polierrestistentere Splitte eingesetzt werden.The economic advantages are the reduction of the expensive cover layer material. In addition, better binders and / or more polish-resistant chips are used.
Eine hohe Lagerungsdichte erreicht man nur mit aus¬ reichenden Einbaudicken. Allgemein setzt dies bei der traditionellen Bau¬ weise ein Verhältnis von Schichtstärke zu Großtkorn von ca. 3:1 voraus. Daraus resultiert z.B. die Ein¬ baustärke von 4 cm für Asphaltbeton 0/11 mm.A high storage density can only be achieved with sufficient installation thicknesses. In general, this requires a ratio of layer thickness to large grain of approx. 3: 1 in the traditional construction. This results e.g. the paving thickness of 4 cm for asphalt concrete 0/11 mm.
Normalerweise genügen zur Erfüllung der Abdich¬ tungsfunktion geringere Schichtstärken. Aus Gründen der Verdichtbarkeit auf der kalten Asphaltunterlage ist man gezwungen, die Einbaudicke der bin¬ demittelreichen und damit weniger schubfesten Deck- Schicht der Verdichtungswilligkeit anzupassen. Ab¬ leitend aus den Belastungsfällen ergibt sich daraus eine erhöhte Verformungsneigung.Normally, lower layer thicknesses are sufficient to fulfill the sealing function. For reasons of compactibility on the cold asphalt surface, one is forced to adapt the paving thickness of the binder layer, which is rich in binders and therefore less resistant to shear, to the compaction willingness. Derived from the load cases, this results in an increased tendency to deform.
Die Erfindung wird im folgenden anhand von Ausfüh¬ rungsbeispielen näher erläutert. In der zugehörigen Zeichnung zeigenThe invention is explained in more detail below on the basis of exemplary embodiments. Show in the accompanying drawing
Figur 1 eine Darstellung der Abhängigkeit der Verdichtungszeit von der Schichtdicke,FIG. 1 shows the dependence of the compression time on the layer thickness,
Figur 2 den Einfluß der Mischguttemperatur auf die Raumdichte (RG) bzw. den Verdichtungsgrad (VD).Figure 2 shows the influence of the temperature of the mixed material on the density (RG) or the degree of compaction (VD).
Im ersten Beispiel werden 10 cm Asphalttragschicht Type CS 0/32 mm und gleichzeitig 4 cm Asphaltbinder 0/16 mm eingebaut. Durch die Gesamtschichtstärke von 14 cm gegenüber 10 cm Asphalttragschicht und 4 cm Asphaltbinder wird die Verdichtungszeit erheb¬ lich verlängert und es werden an beiden Schichten das Niveau der Verdichtungsgrade erhöht. Dies führt zu einer wesentlichen Steigerung der Verformungsbe¬ ständigkeit an beiden Schichten und es treten keine Substanzverluste am Asphaltbinder auf, wie sie beim im Stand der Technik üblichen Einbau heiß auf kalt häufig festzustellen sind.In the first example, 10 cm asphalt base course Type CS 0/32 mm and 4 cm asphalt binder 0/16 mm are installed at the same time. Through the total layer thickness of 14 cm compared to 10 cm asphalt base course and 4 cm asphalt binder, the compaction time is considerably extended and the level of compaction levels is increased on both layers. This leads to a significant increase in the resistance to deformation on both layers and there are no substance losses on the asphalt binder, as can often be found hot to cold in the installation customary in the prior art.
In einem zweiten Beispiel werden 10 cm Asphaltbin¬ der 0/22 mm und gleichzeitig 2 cm Splittmastixas¬ phalt 0/11 mm eingebaut. Durch die gesamte Schicht¬ stärke von 12 cm Heißasphalt gegenüber 8 cm As- phaltbinder und 4 cm Deckschicht wird die Verdich¬ tungszeit erheblich verlängert und es werden an beiden Schichten das Niveau der Verdichtungsgrade erhöht. Der Asphaltbinder erhält dadurch eine grö¬ ßere Lagerungsdichte und ist somit verformungsbe- ständiger.In a second example, 10 cm of asphalt binder of 0/22 mm and at the same time 2 cm of split mastic asphalt 0/11 mm are installed. Due to the total layer thickness of 12 cm hot asphalt compared to 8 cm asphalt binder and 4 cm top layer, the compaction time is considerably extended and the level of compaction on both layers is increased. As a result, the asphalt binder receives a greater storage density and is therefore more resistant to deformation.
Trotz Nichteinhaltung der Größtkornregel ist der Splittmastix 0/11 mm wesentlich effektiver gegen¬ über 4 cm auf einer kalten Unterlage verdichtbar. Durch die Substitution von 2 cm bindemittelreichen Splittmastix 0/11 mm durch den verformungsbeständi¬ gen Asphaltbinder 0/22 mm wird die gesamte Decke erheblich standfester bei Beibehaltung der anderen Funktionen der Deckschicht.In spite of non-compliance with the largest grain rule, the stone mastic 0/11 mm can be compacted much more effectively than 4 cm on a cold surface. With the substitution of 2 cm of binder-rich stone mastic 0/11 mm by the deformation-resistant asphalt binder 0/22 mm, the entire ceiling becomes considerably more stable while maintaining the other functions of the top layer.
Im Beispiel drei werden 6 cm Asphaltbinder 0/16 mm und gleichzeitig 2 cm Asphaltbeton 0/11 mm einge¬ baut. Durch die Gesamtschichtstärke von 8 cm Hei߬ asphalt gegenüber 4 cm Asphaltbinder und 4 cm As- phaltbeton wird die Verdichtungszeit erheblich ver¬ längert und es werden an beiden Schichten das Ni¬ veau der Verdichtungsgrade erhöht.In example three, 6 cm of asphalt binder 0/16 mm and at the same time 2 cm of asphalt concrete 0/11 mm are installed. Due to the total layer thickness of 8 cm hot asphalt compared to 4 cm asphalt binder and 4 cm asphalt The compacting time is considerably extended and the level of compaction is increased on both layers.
Der Asphaltbinder erlangt eine größere Lagerungs- dichte und ist somit verformungsbeständiger.The asphalt binder has a higher storage density and is therefore more resistant to deformation.
Trotz Nichteinhaltung der Großtkornregel wurde der Asphaltbeton 0/11 mm optimal verdichtet und ausrei¬ chend dicht.Despite non-compliance with the Großtkorn rule, the asphalt concrete 0/11 mm was optimally compacted and sufficiently tight.
Durch die Substitution von 2 cm bindemittelreichen Asphaltbeton 0/11 mm durch den verformungsbeständi¬ geren Asphaltbinder 0/16 wird die gesamte Decke er¬ heblich standfester bei Beibehaltung der anderen Funktionen der Deckschicht. The substitution of 2 cm binder-rich asphalt concrete 0/11 mm with the deformation-resistant asphalt binder 0/16 makes the entire ceiling considerably more stable while maintaining the other functions of the top layer.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Verfahren zum Herstellen eines zweischichtigen Asphaltbelages, dadurch gekennzeichnet, daß zwei verschiedene Mischgutsorten aus der Asphaltproduk- tion heiß auf heiß gemeinsam verlegt werden.1. A process for producing a two-layer asphalt surface, characterized in that two different types of mix from the asphalt production are laid together hot on hot.
2. Verfahren nach Anspruch 1, dadurch gekennzeich¬ net, daß die Schichtstärke der Deckschicht vermin¬ dert und die der Binderschicht um den Differenzbe- trag erhöht wird.2. The method according to claim 1, characterized in that the layer thickness of the cover layer is reduced and that of the binder layer is increased by the difference.
3. Verfahren nach Anspruch 1, dadurch gekennzeich¬ net, daß die Asphaltbinder- und Asphalttragschicht gemeinsam eingebaut werden.3. The method according to claim 1, characterized gekennzeich¬ net that the asphalt binder and asphalt base course are installed together.
4. Verfahren nach Anspruch 1, dadurch gekennzeich¬ net, daß Deck- und Binderschicht gemeinsam einge¬ baut werden.4. The method according to claim 1, characterized gekennzeich¬ net that the cover and binder layers are installed together.
5. Verfahren nach Anspruch 1, dadurch gekennzeich¬ net, daß Deck- und Tragschicht gemeinsam eingebaut werden.5. The method according to claim 1, characterized gekennzeich¬ net that the top and base layers are installed together.
6. Verfahren nach Anspruch 5, dadurch gekennzeich- net, daß die Schichtstärke der Deckschicht vermin¬ dert und die der Tragschicht um den Differenzbetrag erhöht wird. 6. The method according to claim 5, characterized in that the layer thickness of the cover layer is reduced and that of the base layer is increased by the difference.
EP95902030A 1993-11-27 1994-11-23 Process for producing a two-layered asphalt covering Revoked EP0730693B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4340421 1993-11-27
DE4340421 1993-11-27
DE4342999A DE4342999A1 (en) 1993-11-27 1993-12-16 Process for producing a two-layer asphalt surface
DE4342999 1993-12-16
PCT/DE1994/001404 WO1995014819A2 (en) 1993-11-27 1994-11-23 Process for producing a two-layered asphalt covering

Publications (2)

Publication Number Publication Date
EP0730693A1 true EP0730693A1 (en) 1996-09-11
EP0730693B1 EP0730693B1 (en) 1998-03-25

Family

ID=25931572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95902030A Revoked EP0730693B1 (en) 1993-11-27 1994-11-23 Process for producing a two-layered asphalt covering

Country Status (8)

Country Link
EP (1) EP0730693B1 (en)
JP (1) JPH09505369A (en)
CN (1) CN1052280C (en)
AT (1) ATE164408T1 (en)
DK (1) DK0730693T3 (en)
ES (1) ES2117386T3 (en)
PL (1) PL176324B1 (en)
WO (1) WO1995014819A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8021076B2 (en) 2006-08-31 2011-09-20 hkc Ilackmann + Kollath Ingenieur-Consult GmbH Runway for aircraft and roadway for vehicles and method of renewing a runway or roadway

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104480824A (en) * 2014-12-12 2015-04-01 西安盛祥公路工程有限公司 Asphalt pavement and one-time forming process thereof.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU464167B2 (en) * 1972-05-25 1975-08-21 Gunnar Ohlson Karl A method for the production of plant-mixed asphalt concrete
FR2271337A2 (en) * 1973-12-14 1975-12-12 Beugnet Nle Entreprises Rutting-resistant anti-skid road-surfacing - consisting of asphalt-concrete layer with abrasion resistant splinters forced into it
NO752349L (en) * 1974-07-16 1976-01-19 Huiles Gourdons Et Derives Sa

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9514819A3 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8021076B2 (en) 2006-08-31 2011-09-20 hkc Ilackmann + Kollath Ingenieur-Consult GmbH Runway for aircraft and roadway for vehicles and method of renewing a runway or roadway

Also Published As

Publication number Publication date
CN1052280C (en) 2000-05-10
WO1995014819A2 (en) 1995-06-01
CN1139469A (en) 1997-01-01
EP0730693B1 (en) 1998-03-25
ATE164408T1 (en) 1998-04-15
PL176324B1 (en) 1999-05-31
WO1995014819A3 (en) 2001-12-20
DK0730693T3 (en) 1999-01-25
JPH09505369A (en) 1997-05-27
PL314612A1 (en) 1996-09-16
ES2117386T3 (en) 1998-08-01

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