EP0730693B1 - Process for producing a two-layered asphalt covering - Google Patents

Process for producing a two-layered asphalt covering Download PDF

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EP0730693B1
EP0730693B1 EP95902030A EP95902030A EP0730693B1 EP 0730693 B1 EP0730693 B1 EP 0730693B1 EP 95902030 A EP95902030 A EP 95902030A EP 95902030 A EP95902030 A EP 95902030A EP 0730693 B1 EP0730693 B1 EP 0730693B1
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asphalt
layer
layers
binder
course
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EP0730693A1 (en
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Elk Richter
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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

Definitions

  • the invention relates to a method for manufacturing a two-layer asphalt surface with one Optimization of the properties of the asphalt layers is effected.
  • binder layer has to withstand today's stresses the main task due to heavy traffic, the shear stress record and derive without damage. Out for this reason, binder layers have to be in the first place be steadfast.
  • the asphalt base layer is used for damage-free absorption and derivation of the occurring voltages in the areas below. You also have to to be stable.
  • Binder and base layers are covered by the top layer protected and therefore have no sealing tasks.
  • cover layers are in one 4 cm thick built-in.
  • the nominal thickness of the binder and asphalt base courses vary depending according to the construction class Building regulations, such as RStO 86/89. / Arand and others : Investigation of the effectiveness of high-performance compaction screeds through ongoing field measurements Construction sites, road and highways, Bonn 41 (1990) No. 5 pp. 215-219.
  • the top layer is due to the sealing function the layer rich in binder, at the same time the highest possible temperatures occur here on. Due to the thermoplastic properties of bitumen has the top layer material in summer the least shear strength.
  • the quality is subject to the Road distributed or mixed components larger Fluctuations compared to those caused by the mixing process asphalt produced on an asphalt plant, because the ratio of old and new components is less is to be strictly observed and is often different in the construction lot Compositions are present.
  • DE-A-2 416 338 describes nailing a carrier asphalt concrete immediately after the application of the carrier asphalt concrete at a time when it is still hot.
  • the publication AU-B-464 167 describes the joint heating and mixing of two different mixture sensors which are then mixed together and applied in one layer.
  • the invention has for its object a method for the production of a two-layer asphalt surface from two ready-to-deliver mix types with which the total paving thickness is essential increases and the layer thickness ratio the composition and thus optimized properties will.
  • 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 hot-installed in one operation and the layer thickness ratio with each other is changed.
  • the direct hot-on-hot installation 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 be reduced at the same time.
  • the economic advantage is the reduction of the expensive cover layer material.
  • Improved binders and / or more polish-resistant chips can also be used.
  • a high storage density can only be achieved with sufficient installation thicknesses. In general, this requires a ratio of layer thickness to largest grain of approx. 3: 1 in the traditional construction method. This results, for example, in the installation thickness of 4 cm for asphalt concrete 0/11 mm.

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

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 manufacturing a two-layer asphalt surface with one Optimization of the properties of the asphalt layers is effected.

Nach dem im Stand der Technik bekannten Verfahren werden Asphaltbefestigungen aus mehreren Schichten unter Verwendung unterschiedlicher Mischgutsorten hergestellt. Der Einbau des Mischgutes erfolgt dabei 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.
Die Gesamtstärke des Aufbaus sowie die der einzelnen Schichten richtet sich hauptsächlich nach den auftretenden Belastungen.
Im allgemeinen bestehen die Asphaltbefestigungen aus Deck-, Binder- und Tragschicht. An die einzelnen Schichten werden unterschiedliche Anforderungen gestellt.
Für die Deckschicht sind hauptsächlich folgende Anforderungen wesentlich:

  • Aus Gründen der Verkehrssicherheit sind gute Griffigkeit, hohe Ebenheit, Helligkeit und möglichst hohes Reflexionsvermögen wichtig;
  • zur Gewährleistung einer hohen Witterungsbeständigkeit sind Abdichtung, Frost- und Raum-beständigkeit, Haftung des Bindemittels und Oxydationsbeständigkeit erforderlich und
  • zur Sicherung einer ausreichenden Festigkeit müssen Flexibilität, Verschleiß- und Stand- sowie Ermüdungsfestigkeit gegeben sein.
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 types of mix 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.
The overall strength of the structure as well as that of the individual layers mainly depends on the loads that occur.
In general, the asphalt pavements consist of a top, binder and base course. Different requirements are placed on the individual layers.
The main requirements for the top layer are:
  • Good grip, high evenness, brightness and the highest possible reflectivity are important for traffic safety reasons;
  • To ensure high weather resistance, sealing, frost and room resistance, adhesion of the binder and resistance to oxidation are required
  • 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 Schubspannung schadlos aufzunehmen und abzuleiten. Aus diesem Grund müssen Binderschichten in erster Linie standfest sein.The binder layer has to withstand today's stresses the main task due to heavy traffic, the shear stress record and derive without damage. Out for this reason, binder layers have to be in the first place be steadfast.

Die Asphalttragschicht dient der schadlosen Aufnahme und Ableitung der auftretenden Spannungen in die darunter liegenden Bereiche. Sie müssen ebenfalls standfest zusammengesetzt sein.The asphalt base layer is used for damage-free absorption and derivation of the occurring voltages in the areas below. You also have to to be stable.

Binder- und Tragschicht werden durch die Deckschicht geschützt und haben somit keinerlei Dichtungsaufgaben.Binder and base layers are covered by the top layer protected and therefore have no sealing tasks.

Im allgemeinen werden die Deckschichten in einer Stärke von 4 cm eingebaut. Die Solldicken der Binder- und Asphalttragschichten variieren in Abhängigkeit von der Bauklasse entsprechend gültigen Bauvorschriften, wie dem RStO 86/89. / Arand u.a. : Untersuchung der Wirksamkeit von Hochleistungsverdichtungsbohlen durch Feldmessungen auf laufenden Baustellen , Straße und Autobahnen, Bonn 41 (1990) Nr. 5 S. 215 - 219.In general, the cover layers are in one 4 cm thick built-in. The nominal thickness of the binder and asphalt base courses vary depending according to the construction class Building regulations, such as RStO 86/89. / Arand and others : Investigation of the effectiveness of high-performance compaction screeds through ongoing field measurements 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, Schichtstärke und Verdichtung gekennzeichnet, um den ständig steigenden Belastungen aus dem Anwachsen der Verkehrsbelastungszahlen und der Erhöhung der Achslasten 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 ungefähr mit der 4. Potenz der Achslast.The development of the asphalt road construction of the last Decades was through optimization of each Layers in terms of composition, layer thickness and compression characterized to the constantly increasing burdens from the growth of Traffic load figures and the increase in axle loads correspond to. The influence of the axle loads the usage behavior is generally according to the Results of the AASHO-ROAD test determined. After that 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 ständig steigende Transportaufkommen auf der Straße hat zu einer erhöhten Schadenshäufigkeit geführt. Dabei läuft die Entwicklung der Straßenbautechnologien meistens nur den Entwicklungen der Anforderungen, hinterher.
An den Schäden infolge Verformung sind die Deck- und teilweise auch die Binder- bis hin zu den Tragschichten beteiligt. Die Ursachen liegen überwiegend in der Materialzusammensetzung und der Verdichtung.
Ein besonderes Problem stellen die Deckschichten dar, zumal die Vielzahl der Aufgaben recht unterschiedliche konzeptionelle Entscheidungen verlangen. So verhalten sich z. B. Abdichtung und Standfestigkeit gegenläufig. The increasing axle load as well as overloading and the increase in heavy traffic due to the constantly increasing volume of transport by road have led to an increased frequency of damage. The development of road construction technologies usually only follows developments in requirements.
The top and partly the binder and base layers are involved in the damage due to deformation. The causes lie mainly in the material composition and the compression.
The cover layers represent a particular problem, especially since the multitude of tasks require very different conceptual decisions. So behave z. B. sealing and stability in opposite directions.

Bedingt durch die Abdichtungsfunktion ist die Deckschicht die bindemittelreichste Schicht, gleichzeitig treten hier die größtmöglichen Temperaturen auf. Infolge der thermoplastischen Eigenschaften des Bitumens hat das Deckschichtmaterial im Sommer die geringsten Scherfestikeiten.The top layer is due to the sealing function the layer rich in binder, at the same time the highest possible temperatures occur here on. Due to the thermoplastic properties of bitumen has the top layer material in summer the least shear strength.

Ein weiteres Problem, das für den Asphaltstraßenbau von immenser Bedeutung ist, stellt der Einbau bei ungünstigen Einbaubedingungen dar.
Daraus resultiert bei den häufig einzubauenden Deck- und Binderschichten von jeweils 4 cm Schichtstärke 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.Another problem that is of immense importance for asphalt road construction is paving in unfavorable conditions.
This results in a too short compaction time or a too rapid cooling of the asphalt mix 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 Verdichtungswilligkeit dadurch zu verbessern, daß der Bindemittelgehalt erhöht wird. Dies führt jedoch zu Abnahmen der Scherfestigkeit. Generell beinhaltet ein geringer Verdichtungsgrad eine exponentielle Abnahme z. B. der Standfestigkeit.
Der im Stand der Technik übliche einschichtige Asphalteinbau, bei dem auf eine kalte oder schon weitestgehend abgekühlte Unterlage die nächste Schicht eingebaut wird, verursacht gerade bei den relativ dünnen Deck- und Binderschichten Zwänge sowie Qualitätsmängel. 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.
The usual single-layer asphalt paving in the state of the art, in which the next layer is installed on a cold or largely cooled base, causes constraints and quality defects, particularly in the case of the relatively thin cover and binder layers.

Bei der Sanierung von Asphaltbelägen ist es bekannt, zweischichtige Asphaltbeläge dadurch zu erzeugen, daß der vorhandene meist schadhafte Asphalt 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.It is when renovating asphalt surfaces known, two-layer asphalt surfaces generate that existing mostly damaged asphalt heated and distributed on site or is mixed with other asphalt components. Due to the relatively low thermal conductivity of the Asphalt, the bitumen becomes very different Subject to heating temperatures.

An der Oberseite der Aspaltschicht treten dabei Temperaturen von 250 - 600°C auf, die nach unten sehr stark Abnehmen. Diese hohen Temperaturen führen zu erhöhten umweltbelastenden Emissionen sowie Veränderungen der Bitumeneigenschaften.This occurs on the top of the asphalt layer Temperatures of 250 - 600 ° C on that down losing weight very strongly. These high temperatures result to increased polluting emissions as well Changes in bitumen properties.

Weiterhin unterliegt die Qualität der auf der Straße verteilten oder gemischten Komponenten größeren Schwankungen gegenüber den durch den Mischvorgang an einer Asphaltanlage erzeugten Asphalt, da das Verhältnis Alt- und Neukomponente weniger genau einzuhalten ist und im Baulos bereits oft unterschiedliche Zusammensetzungen vorliegen.Furthermore, the quality is subject to the Road distributed or mixed components larger Fluctuations compared to those caused by the mixing process asphalt produced on an asphalt plant, because the ratio of old and new components is less is to be strictly observed and is often different in the construction lot Compositions are present.

DE-A-2 416 338 beschreibt eine Benagelung eines Trägerasphaltbetons unmittelbar nach dem Aufbringen des Trägerasphaltbetons zu einem Zeitpunkt, bei dem dieser noch heiß ist.
Die Druckschrift AU-B-464 167 beschreibt das gemeinsame Erhitzen und Mischen von zwei verschiedenen Mischgutsensoren die anschließend miteinander vermischt in einer Schicht aufgebracht werden. DE-A-2 416 338 describes nailing a carrier asphalt concrete immediately after the application of the carrier asphalt concrete at a time when it is still hot.
The publication AU-B-464 167 describes the joint heating and mixing of two different mixture sensors which are then mixed together and applied in one layer.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Herstellen eines zweischichtigen Asphaltbelages aus zwei lieferfertigen Mischgutsorten anzugeben, mit dem die Gesamteinbaustärken wesentlich erhöht und das Schichtstärkeverhältnis die Zusammensetzung und somit Eigenschaften optimiert werden. Die Optimierung bezieht sich insbesondere auf den Verdichtungsgrad ohne Erhöhung der Verdichtungsenergie. The invention has for its object a method for the production of a two-layer asphalt surface from two ready-to-deliver mix types with which the total paving thickness is essential increases and the layer thickness ratio the composition and thus optimized properties will. The optimization relates in particular to the degree of compression without increasing the compression energy.

Erfindungsgemäß gelingt die Lösung dieser Aufgabe dadurch, daß die oberen Schichten der Asphaltbefestigung im Heißeinbau in einem Arbeitsgang eingebaut werden und das Schichtstärkenverhältnis untereinander verändert wird.According to the invention this object is achieved in that the upper layers of the asphalt pavement hot-installed in one operation and the layer thickness ratio with each other is changed.

Durch den gleichzeitigen Einbau von zwei verschiedenen und heiß auf heiß übereinanderliegenden Asphaltschichten aus angeliefertem Mischgut von der Asphaltanlage wird das Wärmepotential erhöht und die Abkühlung verzögert, dadurch gelingt es, die Eigenschaften dieser beiden Asphaltschichten erheblich zu verbessern.By installing two different ones at the same time and hot on hot layers of asphalt from delivered mix from the Asphalt plant, the heat potential is increased and the cooling is delayed, so that the Properties of these two asphalt layers significantly to improve.

Dies betrifft den gleichzeitigen Einbau von Asphaltbinder plus Deckschicht sowie bei geringer frequentierten Straßen Asphalttrag- plus Deckschicht sowie die Kombination von Asphalttragschicht und Asphaltbinder.This concerns the simultaneous installation of asphalt binders plus top layer as well as less frequented roads asphalt base plus surface course as well as the combination of asphalt base course and asphalt binder.

Weiterhin wird durch die direkte Heiß-auf-Heiß-Verlegung ein optimaler Verbund der Schichten erzielt. Das mit einem seitlichen Ausweichen (Gleiten) verbundene Verformungsverhalten wird so verbessert. Der gleichzeitige zweischichtige Einbau erlaubt eine Veränderung der Asphaltrezepturen zu standfesteren und Gemischen, da das Niveau der Verdichtungsgrade in beiden Schichten des Asphalts erheblich erhöht wird und somit gleichzeitig der Hohlraumgehaltreduziert werden kann.
Wirtschaftliche Vorteile bildet die Reduzierung des teueren Deckschichtmaterials. Außerdem können verbesserte Bindemittel und/oder polierrestistentere Splitte eingesetzt werden.
Eine hohe Lagerungsdichte erreicht man nur mit ausreichenden Einbaudicken.
Allgemein setzt dies bei der traditionellen Bauweise ein Verhältnis von Schichtstärke zu Größtkorn von ca. 3:1 voraus. Daraus resultiert z.B. die Einbaustärke von 4 cm für Asphaltbeton 0/11 mm.Furthermore, the direct hot-on-hot installation 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 be reduced at the same time.
The economic advantage is the reduction of the expensive cover layer material. Improved binders and / or more polish-resistant chips can also be used.
A high storage density can only be achieved with sufficient installation thicknesses.
In general, this requires a ratio of layer thickness to largest grain of approx. 3: 1 in the traditional construction method. This results, for example, in the installation thickness of 4 cm for asphalt concrete 0/11 mm.

Normalerweise genügen zur Erfüllung der Abdichtungsfunktion geringere Schichtstärken. Aus Gründen der Verdichtbarkeit auf der kalten Asphaltunterlage ist man gezwungen, die Einbaudicke der bindemittelreichen und damit weniger schubfesten Deckschicht der Verdichtungswilligkeit anzupassen. Ableitend aus den Belastungsfällen ergibt sich daraus eine erhöhte Verformungsneigung.Usually it is sufficient to fulfill the sealing function lower layer thicknesses. For reasons the compactibility on the cold asphalt surface one is forced to change the thickness of the binder-rich and therefore less shear-resistant top layer adapt to the willingness to compress. Deriving it follows from the load cases an increased tendency to deform.

Die Erfindung wird im folgenden anhand von Ausführungsbeispielen näher erläutert.
In der zugehörigen Zeichnung zeigen

  • Figur 1 eine Darstellung der Abhängigkeit der Verdichtungszeit von der Schichtdicke,
  • Figur 2 den Einfluß der Mischguttemperatur auf die Raumdichte (RG) bzw. den Verdichtungsgrad (VD).
    • The invention is explained in more detail below on the basis of exemplary embodiments.
    Show in the accompanying drawing
  • 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).

    • 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 erheblich verlängert und es werden an beiden Schichten das Niveau der Verdichtungsgrade erhöht. Dies führt zu einer wesentlichen Steigerung der Verformungsbeständigkeit 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 of asphalt base course Type CS 0/32 mm and at the same time 4 cm asphalt binder 0/16 mm installed. Through the total layer thickness of 14 cm compared to 10 cm asphalt base course and 4 cm of asphalt binder, the compaction time becomes considerable extended and it will be on both layers the level of compaction levels increased. this leads to to a significant increase in resistance to deformation on both layers and none occur Loss of substance on the asphalt binder, as in hot to cold installation customary in the prior art are common.

    In einem zweiten Beispiel werden 10 cm Asphaltbinder 0/22 mm und gleichzeitig 2 cm Splittmastixasphalt 0/11 mm eingebaut. Durch die gesamte Schichtstärke von 12 cm Heißasphalt gegenüber 8 cm Asphaltbinder und 4 cm Deckschicht wird die Verdichtungszeit erheblich verlängert und es werden an beiden Schichten das Niveau der Verdichtungsgrade erhöht. Der Asphaltbinder erhält dadurch eine größere Lagerungsdichte und ist somit verformungsbeständiger.
    Trotz Nichteinhaltung der Größtkornregel ist der Splittmastix 0/11 mm wesentlich effektiver gegenüber 4 cm auf einer kalten Unterlage verdichtbar. Durch die Substitution von 2 cm bindemittelreichen Splittmastix 0/11 mm durch den verformungsbeständigen Asphaltbinder 0/22 mm wird die gesamte Decke erheblich standfester bei Beibehaltung der anderen Funktionen der Deckschicht.    In a second example, 10 cm asphalt binder 0/22 mm and at the same time 2 cm stone 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. This gives the asphalt binder a higher storage density and is therefore more resistant to deformation.
    Despite failure to comply with the largest grain rule, the stone mastic 0/11 mm can be compacted much more effectively than 4 cm on a cold surface. By substituting 2 cm of binder-rich mastic 0/11 mm with the deformation-resistant asphalt binder 0/22 mm, the entire ceiling is 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 eingebaut. Durch die Gesamtschichtstärke von 8 cm Heißasphalt gegenüber 4 cm Asphaltbinder und 4 cm Asphaltbeton wird die Verdichtungszeit erheblich verlängert und es werden an beiden Schichten das Niveau der Verdichtungsgrade erhöht.
    Der Asphaltbinder erlangt eine größere Lagerungsdichte und ist somit verformungsbeständiger. Trotz Nichteinhaltung der Größtkornregel wurde der Asphaltbeton 0/11 mm optimal verdichtet und ausreichend dicht.
    Durch die Substitution von 2 cm bindemittelreichen Asphaltbeton 0/11 mm durch den verformungsbeständigeren Asphaltbinder 0/16 wird die gesamte Decke erheblich standfester bei Beibehaltung der anderen Funktionen der Deckschicht.    In example three, 6 cm asphalt binders 0/16 mm and 2 cm asphalt concrete 0/11 mm are installed at the same time. Due to the total layer thickness of 8 cm hot asphalt compared to 4 cm asphalt binder and 4 cm asphalt concrete, the compaction time is considerably extended and the level of compaction on both layers is increased.
    The asphalt binder has a higher storage density and is therefore more resistant to deformation. Despite not complying with the largest grain rule, the asphalt concrete 0/11 mm was optimally compacted and sufficiently tight.
    By substituting 2 cm of binder-rich asphalt concrete 0/11 mm with the more deformation-resistant asphalt binder 0/16, the entire ceiling becomes considerably more stable while maintaining the other functions of the top layer.

    Claims (6)

    1. Process for the making of a double-layer asphalt pavement, characterized in that two different types of mixture from asphalt production are placed together hot on hot, forming two superimposed asphalt layers.
    2. Process as claimed in claim 1, characterized in that the thickness of layer of the surface course is reduced, and that the thickness of layer of the binder course is increased by the amount of difference.
    3. Process as claimed in claim 1, characterized in that the asphaltic binder course and the asphaltic base course are placed together.
    4. Process as claimed in claim 1, characterized in that surface and binder course are placed together.
    5. Process as claimed in claim 1, characterized in that surface and base course are placed together.
    6. Process as claimed in claim 5, characterized in that the thickness of layer of the surface course is reduced, and that the thickness of layer of the base course is increased by the amount of 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 EP0730693A1 (en) 1996-09-11
    EP0730693B1 true EP0730693B1 (en) 1998-03-25

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    EP95902030A Revoked EP0730693B1 (en) 1993-11-27 1994-11-23 Process for producing a two-layered asphalt covering

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    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
    DE102006040896A1 (en) * 2006-08-31 2008-03-20 Bundesland Mecklenburg-Vorpommern, vertreten durch den Betrieb für Bau und Liegenschaften M-V Roadway for air and road vehicles and method for rehabilitation of a roadway, preferably made of concrete

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    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.

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    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

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102006040896A1 (en) * 2006-08-31 2008-03-20 Bundesland Mecklenburg-Vorpommern, vertreten durch den Betrieb für Bau und Liegenschaften M-V Roadway for air and road vehicles and method for rehabilitation of a roadway, preferably made of concrete
    DE102006040896B4 (en) * 2006-08-31 2015-04-02 Friedemann Hoppe Process for the rehabilitation of a roadway for air and road vehicles

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    PL314612A1 (en) 1996-09-16
    JPH09505369A (en) 1997-05-27
    PL176324B1 (en) 1999-05-31
    WO1995014819A2 (en) 1995-06-01
    CN1052280C (en) 2000-05-10
    DK0730693T3 (en) 1999-01-25
    EP0730693A1 (en) 1996-09-11
    ES2117386T3 (en) 1998-08-01
    CN1139469A (en) 1997-01-01
    ATE164408T1 (en) 1998-04-15
    WO1995014819A3 (en) 2001-12-20

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