EP1668184B1 - Verfahren zur herstellung eines bituminösem kalteinbaumischgut - Google Patents

Verfahren zur herstellung eines bituminösem kalteinbaumischgut Download PDF

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Publication number
EP1668184B1
EP1668184B1 EP04816200A EP04816200A EP1668184B1 EP 1668184 B1 EP1668184 B1 EP 1668184B1 EP 04816200 A EP04816200 A EP 04816200A EP 04816200 A EP04816200 A EP 04816200A EP 1668184 B1 EP1668184 B1 EP 1668184B1
Authority
EP
European Patent Office
Prior art keywords
binder
temperature
surfacing
bitumens
cold
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.)
Expired - Fee Related
Application number
EP04816200A
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English (en)
French (fr)
Other versions
EP1668184A2 (de
Inventor
Bernard MAHÉ DE LA VILLEGLÉ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Colas SA
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Colas SA
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Publication date
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Publication of EP1668184A2 publication Critical patent/EP1668184A2/de
Application granted granted Critical
Publication of EP1668184B1 publication Critical patent/EP1668184B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • 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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/46—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing and placing the materials, e.g. slurry seals
    • 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 cold bituminous coating for road surfacing, as well as to a device for manufacturing a cold bituminous mix for road surfacing.
  • Bituminous mixes are generally obtained by hot-making (so-called “hot mixes”) or by cold-forming (so-called “cold mixes”).
  • Hot mixes While technically satisfactory, hot mixes are subject to increasing constraints related to the cost of fuels required for temperature rise, the sophistication of manufacturing plants and increasingly stringent environmental laws. Hot mixes do not allow the use of bitumen emulsion, require the drying of materials, require hot installations and cause the release of fumes and dust during manufacture.
  • Cold production consists of kneading aggregates, possibly moistened with a hydrocarbon binder emulsified, which makes it low viscosity, at a temperature close to ambient temperature, that is to say generally at a temperature of 10 ° C. at 20 ° C, on average close to 15 ° C.
  • the aggregates may be pre-coated, before coating with the hydrocarbon binder emulsion.
  • the hydrocarbon binder emulsion we are talking about double-coated cold mixes.
  • the cold manufacturing allows an implementation of the mixes at the manufacturing temperature close to the ambient temperature, the mix having a maneuverability that depends on the ambient temperature, the choice of the binder, the coalescence of the emulsion, the water content and reactivity of aggregates with respect to the chemical nature of the binder.
  • Cold mixes are free from many constraints related to hot mixes, but have defects: on the one hand, the coating may be of poor quality, and on the other hand, the handling may be low, which may have consequences on the performance of the structure, in terms of elasticity, fatigue resistance, strength and cohesion of the surface (poor geometric quality of the surface).
  • the patent FR-2732239 describes generally a process which, from any cold mix, based on viscous bitumen, allows to obtain, by a non-drying reheating, a warm workable coating and its laying at about 100 ° C.
  • bituminous emulsions must be obtained in the kneaders, that is to say that before the heating, the bituminous coating emulsion has undergone a change of state important and therefore rheology.
  • heating at a temperature of about 100 ° C, relatively high temperature will significantly change the rheology of the asphalt during installation.
  • a dryer drum of a hot coating station does not provide a controlled warming at a temperature of 30 to 65 ° C.
  • the Applicant has discovered that the use of a specific step of raising the temperature of the cold bituminous mix after coating, that is to say after the mixing of the aggregates and the binder , allowed to achieve the above objectives and solve the problems of the prior art.
  • the invention therefore relates to a process for producing a cold bituminous coating for a road surface, obtained by coating aggregates with an emulsion bituminous binder, the granules possibly being precoated with a hydrocarbon binder, said process comprising, after coating and preferably without prior breaking of the bituminous binder emulsion, one or more steps of heating the bituminous mix to obtain a temperature of the bitumen, at the time of its at 65 ° C.
  • the asphalt binder in coating emulsion is a cationic emulsion of bitumen.
  • the aggregates may be precoated with a hydrocarbon binder, before coating with the binder bituminous emulsion.
  • This pre-coating may be carried out either hot, for example with an anhydrous hydrocarbon binder, or cold, with a bituminous binder in emulsion.
  • binders used for pre-coating mention may be made of cationic emulsions of bitumen and pure bitumens conventionally used in asphalt for wearing courses.
  • This double coating allows a complete coating of all aggregates. There is thus a reduction in the risks of segregation and an increase in the mechanical performance of the asphalt.
  • the temperature can be chosen in particular depending on the nature of the binder, the water content of the mix and weather conditions when using the mix. Generally, the temperature is raised to obtain a temperature at the time of use of 30 to 65 ° C, preferably 30 to 60 ° C, more preferably 40 to 60 ° C, and more preferably 50 to 55 ° C. ° C, typically an elevation of 15 to 40 ° C for an ambient temperature of 15 ° C.
  • operating temperature is meant the temperature of the mix during spreading or compaction.
  • the choice of the temperature rise is also done taking into account possibly transport, so that the mix has the required temperature for its implementation.
  • An important aspect of the process of the present invention in a preferred form is that there is no breakage of the binder emulsion before the heating step and in particular it is preferable to avoid any breakage of the emulsion in the kneading steps.
  • the bituminous coating emulsion according to the invention does not undergo any significant change of state and therefore of rheology before its implementation.
  • the process according to the invention can be used to manufacture all types of cold bituminous mixes.
  • bituminous binder can be natural or synthetic.
  • the binder is generally a hydrocarbon binder chosen from road bitumens, pure bitumens, fluxed or fluidized bitumens, polymer-modified bitumens, semi-blown bitumens, bitumens partially modified with blown bitumen, and all combinations of these bitumens.
  • polymers that can be used for modifying bitumens mention may be made of styrene-butadiene copolymers, styrene-isoprene copolymers, ethylene-vinyl acetate (EVA) copolymers, terpolymers, such as, for example, the compound of an ethylenic chain with functional groups of butyl acrylate and methyl glycidyl acrylate which ensures a good stability of the bitumen / polymer mixture, the elastomers and plastomers allowing a significant improvement of the resistance to cracking and hulling.
  • EVA ethylene-vinyl acetate
  • the aggregates generally have a particle size selected in the range 0 / D max , D max being the maximum diameter of the aggregate as defined by the standard XP P 18-540 and generally ranging from 4 to 31.5 mm.
  • the aggregates used in the process according to the invention can be any type of aggregate usually used for the manufacture of bituminous mixes, for example natural or synthetic materials such as slags, slags, machefers, asphalt aggregates, and mixtures in all proportions of these materials.
  • asphalt aggregates are recycling materials derived in particular from the milling of old bituminous coatings.
  • the cold-rolled bituminous mix according to the invention comprises from 5 to 12%, preferably from 7 to 10% by weight of binder relative to the weight of the aggregates.
  • the cold bituminous mix obtained by the process according to the invention can be opened (void percentage greater than 15% by volume), semi-dense (void percentage between 10 and 15% by volume) or dense (percentage of void less than 10% by volume). This is achieved by varying in the final blend the proportion of aggregates 0 / d, where 1 ⁇ d ⁇ x, where x may be 2 mm, 4 mm or 6.3 mm.
  • the cold bituminous mix obtained by the process according to the invention may also be storable or non-storable.
  • the bituminous cold mix warmer obtained by the process according to the invention can be for example a serious-emulsion, a bituminous concrete emulsion or a severe cold bitumen.
  • the method according to the invention comprises, after the coating, one or more steps of raising the temperature of the mix by heating the mix at a temperature of 30 ° C to 65 ° C.
  • the asphalt obtained is optionally stored and then transported to the site of the site, if the coating was not carried out on site, to be implemented.
  • the asphalt is generally used by a spreading step on the pavement and a compaction step.
  • the cold mix is heated before spreading, that is to say after the coating and before or after transport to the place of application, if any, that there is or not a storage phase, and / or during spreading and / or after spreading during compaction.
  • the flux of the mix is generally between 50 and 250 tonnes / hour.
  • the heating results in particular in increasing the temperature of the binder and the water present in the mix.
  • the increase in the temperature of the binder will considerably modify its viscosity and thus influence the quality of the coating and the workability of the mix.
  • the heating is carried out by one or more heating means chosen from infra-red radiation, ultraviolet radiation, microwave waves, high frequency waves and bringing the bituminous mixture into contact with the substrate. hot air.
  • heating means chosen from infra-red radiation, ultraviolet radiation, microwave waves, high frequency waves and bringing the bituminous mixture into contact with the substrate. hot air.
  • the invention also relates to a method of manufacturing road pavement with a cold bituminous coating obtained by coating aggregates with an emulsion bituminous binder, the granules possibly being precoated with a hydrocarbon binder, said process comprising one or more stages of elevation of the temperature of the mix as defined above.
  • the position of the means for raising the temperature of the aggregates and the binder depends on the time at which the temperature rise is effected during the cold bituminous mix operation.
  • a means for raising the temperature of the mix is positioned at the kneader, the heating being of course carried out after the cold mix has been produced.
  • a means for raising the temperature of the bit is positioned after the kneader.
  • a means for raising the temperature of the mix is positioned at the transfer elements of the mix.
  • the device according to the invention comprises a means for spreading the bituminous mix and a means for compacting the bituminous mix, a means for raising the temperature of the bitumen being positioned at the level of the medium. compaction of the asphalt or between the spreading means and the compaction means.
  • a heating device that is suitable for carrying out the process of the invention is an aggregate heating tube.
  • the invention is illustrated by the following example.
  • the aggregates and the bituminous binder in emulsion are conditioned at the same temperature.
  • bituminous binder represents 8% by weight of the weight of the bituminous mix.
  • the coating of the aggregates with the bituminous binder is carried out cold in a kneader.
  • the initial water content in the resulting mixes is 6% by weight.
  • the mixes are brought to a temperature of 15 ° C. (no step of raising the temperature according to the invention), 30 ° C. (the temperature was raised according to the invention) or possibly 50 ° C. (the temperature was elevated according to the invention).
  • Asphalt mixes are subject to density and rutting resistance measurements.
  • Density is measured using a gyratory shear press. The void percentage is measured at 10, 60 or 200 gir. according to standard NF P 98-252.
  • the rut resistance test is carried out according to standard NF P 95-253-2.

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

Claims (9)

  1. Verfahren zur Herstellung eines Kaltasphalts als Straßenbelag, der durch Umhüllung eines Granulats mit einem bituminösen Bindemittel in Emulsion erhalten wird, wobei das Granulat gegebenenfalls vorab mit einem Kohlenwasserstoff-Bindemittel umhüllt werden kann, dadurch gekennzeichnet, dass es nach der Umhüllung, und ohne dass es zu einem Reißen der Emulsion des bituminösen Bindemittels kommt, einen oder mehrere Schritte des Erhitzens des Asphalts in einer Weise, dass man eine Temperatur des Asphalts zum Zeitpunkt seiner Verwendung von 30 bis 65 °C erhält, umfasst.
  2. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass die Temperatur in einer solchen Weise erhöht wird, dass man eine Temperatur zum Zeitpunkt der Verwendung von 30 bis 60°C, vorzugsweise 40 bis 60 °C und besonders bevorzugt 50 bis 55 °C erhält,
  3. Verfahren gemäß einem der Ansprüche 1, und 2, dadurch gekennzeichnet, dass der nach der Umhüllung erhabene Kaltasphalt in einem Schritt des Ausbreitens auf der Fahrbahn und in einem Schritt der Kompaktierung verwendet wird, wobei der Kaltasphalt vor und/oder während des Ausbreitens und/oder nach dem Ausbreiten im Verlauf des Kompaktierens erhitzt wird.
  4. Verfahren gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Erhitzen mit einem oder mehreren Erhitzungsmitteln durchgeführt wird, die aus Infrarotstrahlung, Ultraviolettstrahlung, Mikrowellen, Radiowellen und In-Kontakt-Bringen des Asphalts mit heißer Luft ausgewählt sind.
  5. Verfahren gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Bindemittel aus Straßenbaubiturren, reinem Bitumen, Fluxbitumen, poiymermodifiziertem Bitumen, halbgeschäumtem Bitumen, durch Schaumbitumen partiell modifiziertem Bitumen und allen Kombinationen solcher Bitumen ausgewählt ist.
  6. Verfahren gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das in Emulsion befindliche bituminöse Bindemittel eine kationische Emulsion ist.
  7. Verfahren gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Kaltasphalt 5 bis 12 Gew.-%, vorzugsweise 7 bis 10 Gew.-%, Bindemittel umfasst, bezogen auf das Gewicht des Granulats.
  8. Verfahren gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Granulat ganz oder teilweise aus Bruchasphalt besteht.
  9. Verfahren zur Herstellung eines Straßenbelags mittels eines Kaltasphalts, der durch Umhüllung eines Granulats mit einem bituminösen Bindemittel in Emulsion erhalten wird, wobei das Granulat gegebenenfalls vorab mit einem Kohlenwasserstoff-Bindemittel umhüllt werden kann, dadurch gekennzeichnet, dass es einen oder mehrere Schritte der Erhöhung der Temperatur des Asphalts umfaßt, wie sie in einem der Ansprüche 1 bis 8 definiert sind.
EP04816200A 2003-09-19 2004-09-17 Verfahren zur herstellung eines bituminösem kalteinbaumischgut Expired - Fee Related EP1668184B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0350579A FR2860011B1 (fr) 2003-09-19 2003-09-19 Procede de fabrication d'un enrobe bitumineux a froid et dispositif
PCT/FR2004/050444 WO2005028756A2 (fr) 2003-09-19 2004-09-17 Procede de fabrication d'un enrobe bitumineux a froid et dispositif

Publications (2)

Publication Number Publication Date
EP1668184A2 EP1668184A2 (de) 2006-06-14
EP1668184B1 true EP1668184B1 (de) 2011-09-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04816200A Expired - Fee Related EP1668184B1 (de) 2003-09-19 2004-09-17 Verfahren zur herstellung eines bituminösem kalteinbaumischgut

Country Status (4)

Country Link
EP (1) EP1668184B1 (de)
AT (1) ATE524613T1 (de)
FR (1) FR2860011B1 (de)
WO (1) WO2005028756A2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2927086B1 (fr) * 2008-02-01 2010-03-19 Eurovia Utilisation d'un melange exothermique pour la fabrication d'un enrobe bitumineux.
FR2960890B1 (fr) 2010-06-04 2021-11-26 Eurovia Procede de fabrication d'enrobes hydrocarbone a froid, enrobes hydrocarbones a froid a maniabilite controlee et leur utilisation pour la realisation de revetements routiers
FR2986006B1 (fr) * 2012-01-23 2015-10-16 Colas Sa Procedes de fabrication d'enrobes hydrocarbones comprenant un enrobage sequence
FR3056609B1 (fr) 2016-09-26 2018-09-14 Eurovia Procede d'indentation d'un echangeur thermique recyclable a haute cadence dans une infrastructure terrestre
EP4150000B1 (de) 2020-05-11 2024-03-27 Vinci Construction Durch cationische latex veränderte kohlenwasserstoff binderemulsionen und deren verwendung zur herstellung von bitumenprodukten
FR3121444B1 (fr) 2021-04-02 2023-04-14 Eurovia Liants bitumineux offrant une résistance accrue aux agressions chimiques
FR3131920A1 (fr) 2022-01-17 2023-07-21 Eurovia Composition de liant clair et ses applications pour les revêtements routiers et d’aménagement
FR3133202A1 (fr) 2022-03-02 2023-09-08 Eurovia Procédé de fabrication d’enrobés hydrocarbonés à froid et enrobés hydrocarbonés à froid à montée en cohésion rapide

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291087B (en) * 1994-07-09 1997-08-06 Adrian Holt A continuous mobile production and laying process for thin macadam surfacing
FR2732239B1 (fr) * 1995-03-29 1997-06-06 Muntzer Emile Jacques Enrobages bitumineux polyvalents a chaud et a froid
AT4686U1 (de) * 2000-07-27 2001-10-25 Vialit Gmbh Oesterr Mischvorrichtung für kaltmischgut

Also Published As

Publication number Publication date
FR2860011A1 (fr) 2005-03-25
FR2860011B1 (fr) 2006-09-15
EP1668184A2 (de) 2006-06-14
ATE524613T1 (de) 2011-09-15
WO2005028756A3 (fr) 2005-06-09
WO2005028756A2 (fr) 2005-03-31

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