EP2393984B1 - Enrobé d'asphalte coulé auto-compactable, pour couches de surface de chaussée, couches intermédiaires asphaltiques, couches de liaison asphaltiques et/ou couches d'étanchéité asphaltiques - Google Patents

Enrobé d'asphalte coulé auto-compactable, pour couches de surface de chaussée, couches intermédiaires asphaltiques, couches de liaison asphaltiques et/ou couches d'étanchéité asphaltiques Download PDF

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Publication number
EP2393984B1
EP2393984B1 EP10702839.1A EP10702839A EP2393984B1 EP 2393984 B1 EP2393984 B1 EP 2393984B1 EP 10702839 A EP10702839 A EP 10702839A EP 2393984 B1 EP2393984 B1 EP 2393984B1
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EP
European Patent Office
Prior art keywords
asphalt
layers
asphalt mixture
sand
bitumen
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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.)
Not-in-force
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EP10702839.1A
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German (de)
English (en)
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EP2393984A1 (fr
Inventor
Bernd Jannicke
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Individual
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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 self-compacting mastic asphalt mixture, for road surface layers, asphalt intermediate layers, Asphaltbinder harshen and / or Asphaltdichtungs harshen in road construction with the features of the preamble of claim 1.
  • the invention is also a road surface layer, asphalt intermediate layer, Asphaltbinder layer and / or Asphaltdichtungs für with the features of the preamble of claim 8.
  • the invention further provides a process for the production of a roadway covering layer from an asphalt mixture according to the invention with the features of the preamble of claim 9.
  • Road surface layers, intermediate layers, binder layers and / or asphalt sealing layers are distinguished according to two installation methods, rolled asphalt and mastic asphalt.
  • Rolled asphalt is named after the fact that it has to be compacted after installation and precompression mainly by the use of heavy rollers, with or without vibration.
  • Mastic asphalt can, on the other hand, be poured out, distributed and installed in a final position by means of a built-in device (mastic asphalt paver or paver), ie it does not have to be compacted. Due to its installation characteristics, mastic asphalt is already such that compacting due to the use of heavy rollers is not required.
  • rolled asphalt In rolled asphalt, the mix already contains the aggregates (grit and sand) for the expression of a textured, splinter-rich and thus gripped road surface of the road surface course.
  • rolled asphalt must be compacted to the required degree of compaction by the use of heavy rollers.
  • the imperfect compaction of rolled asphalt after its installation is a major cause of damage to pavement overlays. It happens again and again that due to unfavorable installation conditions installation errors, eg. B. Minderverdichtitch occur.
  • Gussasphatt is a mixture of grit, sand, filler and binder.
  • the filler is made of small-grained stone powder ⁇ 0.063 mm (TL Gestein-StB 04, version 2007), the binder is usually bitumen. This mixture is composed so that it can be poured and brushed during installation and so also applies as mastic asphalt screed application. After installation and smoothing of the poured asphalt layer, no further compaction is required.
  • mixtures especially mineral mixtures, generally aggregate mixtures, the class 0/8 (with a maximum particle size of 8 mm) or 0/5 (with a maximum particle size of 5 mm) or 0/3 (with a Largest grain size of 3 mm).
  • the particle size is important for the surface properties, the grip and the rolling properties and noise of the road surface It plays a subordinate role for the stability, because this is primarily determined by the mortar, in particular consisting of sand, filler and binder.
  • a road surface layer of mastic asphalt mix would have a closed, smooth surface without further processing. This would not be suitable for driving. As a road surface this must therefore be provided with grit. To increase the roughness of the surface and the Grip takes place in the usual mastic asphalt so regularly a scattering with grit or sand, which must be incorporated into the surface.
  • mastic asphalt is the most economical and long-lasting pavement of asphalt for heavily used traffic areas.
  • the imperviousness of mastic asphalt protects the bitumen from oxidation and subsequent embrittlement and prevents water from penetrating the road structure.
  • mastic asphalt mixtures have also been processed in a modified process into road surface layers.
  • This improved mastic asphalt is processed with 10 to 13 kg / m2 of grit (coarse aggregate) with special properties in terms of grain size and grain shape. This wastes but is not rolled.
  • the installation of this type of mastic asphalt mix is very difficult because all installation parameters, ie installation temperature, no precipitation on the day before installation, correct temperature of the hot spalling must be complied with.
  • FR 2,050,761 discloses a composition for producing a traffic surface comprising chippings, a binder, a filler and an elastomer.
  • this document discloses a Gußasphaltmischung.
  • the elastomer may be present in an amount of from 10 to 30% of the weight of the binder, with the binder preferably being bitumen. Good results have been obtained with a composition comprising about 55 to about 60 weight percent split, about 6.5 to 8 weight percent binder, and about 20 to 27 weight percent filler.
  • the composition advantageously comprises about 10 to about 20% by weight of sand, for example those having a grain size of about 0 to about 6 mm.
  • the grit has sizes between about 5 to 8 mm, and the grain size of the filler, which may be a limestone meal, for example, should be below 80 ⁇ .
  • An exemplary composition comprises 56 to 58 wt .-% grit with grain sizes from 5 to 8 mm, 7 to 8 wt .-% bitumen 40/50, 1 to 2 wt .-% polypropylene elastomer, 24 wt .-% limestone powder with a sieving of 80 ⁇ and 20 wt .-% sand with a grain size of 0 to 6 mm.
  • “chippings” are understood to mean a coarse aggregate of as a rule> 2 mm, and by sand a fine aggregate of aggregate in a range of> 0.063 mm and ⁇ 2 mm.
  • chippings may also be present in mixtures with an aggregate in the range of> 1 mm and ⁇ 2 mm.
  • Such inventively usable mixtures can therefore z.
  • B. have an aggregate in the range> 1 mm and ⁇ 3 mm.
  • the grit and / or sand in the context of the present invention may be formed not only of rock, but also of substitutes such.
  • B. rubber granulate, for example, from processed car tires. Nonetheless, in the present invention, the granulation ranges are consistently referred to as aggregates, even though they include substitutes such as rubber granules with corresponding grain sizes.
  • additives and / or additives are used to varying degrees, partly to change the viscosity of the bitumen so that processing can be carried out at slightly lower installation temperatures.
  • the invention is now based on the problem of specifying a self-compacting asphalt mix for road surface layers, asphalt interlayers, Asphaltbinder füren and / or asphalt sealant layers, which works without the costly scattering with grit in a second operation during installation and still good Properties with regard to evenness, noise reduction and grip.
  • a corresponding road surface layer, asphalt interlayer, asphalt binder layer and / or asphalt sealing layer is likewise an object of the invention.
  • the process for producing such a road surface layer, asphalt interlayer, asphalt binder layer and / or asphalt sealing layer should also be improved.
  • the transport of such an asphalt mixture for road surface layers, intermediate asphalt layers, asphalt binder layers and / or asphalt sealing layers should also be optimized compared to the prior art.
  • Essential to the invention is therefore an altered composition of the bituminous mixture in comparison with the previously given, previously customary values.
  • Essential for the bituminous mixture according to the invention is a very binder-rich, fine-grained mortar (as a mortar is called a mixture of binder, filler and sand).
  • the asphalt mixture according to the invention can be used for the production of road surface layers, which is the main use, asphalt interlayers, Asphaltbindertiken and / or Asphaltdichtungstiken, especially in road construction, in particular as sealing layers under open-pored asphalt or other hollow-rich cover layers, but also in the binder area of roads as asphalt interlayer or Asphaltbinder für due to its high stability, or as asphalt sealing layer.
  • bituminous mixture according to the invention is preferably the class 0/8 (with a maximum grain size of 8 mm) or 0/5 (with a maximum grain size of 5 mm) can be realized.
  • a sand with an aggregate in a range of ⁇ 1 mm or ⁇ 2 mm is present only to a small extent in the asphalt mixture, preferably in a range of 0.1% by mass to 3% by mass, this amount is comprised of the total sand content in a range of 2% to 15% by mass, preferably 6% to 12% by mass.
  • the sand content will consist predominantly of natural sand, possibly also natural sand in the form of quartz sand. Crushed sand, in particular from oversize grain of the filler and the undersize of the chippings, should preferably form only a small component of the sand content.
  • the sand content preferably has a flow coefficient of ⁇ 30 (according to DIN EN 933-6, Section 8).
  • filler it is of particular advantage if it is predominantly or exclusively limestone filler, ie rock powder from limestone (limestone rock powder). This leads to the desired mortar property in the asphalt mix.
  • partial or total replacement by filler from other rocks or substitutes such as glass, metal (s), plastics, fly ashes, in particular with certain properties (eg stiffening), possible.
  • the bituminous mixture according to the invention has already contained the surface properties determining aggregates from the very beginning in the bituminous mixture. This is reflected in the significantly increased chippings content with aggregates> 1 mm, preferably> 2 mm.
  • the surface properties of the road surface layer and, if necessary, the intermediate layer, binder layer and / or sealing layer determining aggregates therefore need not be applied in a further operation as Abstreugut.
  • the binder is a bitumen or at least one thermoplastic binder or mixtures of these binders, preferably a bitumen for the production of temperature-reduced asphalt (siohe Leaflet for temperature reduction of asphalt (M TA), issue 2006 ), a polymer-modified bitumen according to DIN EN 12591 or a road construction bitumen.
  • the viscosity of the bitumen can be lowered and / or changed by the use of viskosticiansveranderirnden binders or by the use of viscosity-modifying additives to the binder and thus the installation temperature of the bituminous mixture can be lowered.
  • a lower installation temperature in a range of about 160 ° C. to about 180 ° C. or up to about 190 ° C. in comparison with a temperature lower limit of previously approx. 200 ° C to about 230 ° C.
  • bituminous mixture according to the invention does not have to be subjected to any additional stripping step on the road, although it is far less sensitive to compliance with the installation parameters than the above-explained, noise-improved bituminous mixture or as the conventional rolled mastic asphalt.
  • the invention also provides a process for producing a roadway top layer, intermediate layer, binder layer and / or sealing layer from an asphalt mixture according to the invention.
  • the asphalt mixture according to one of claims 1 to 7 is used here.
  • bituminous mixture with a temperature between about 160 ° C, preferably about 180 ° C, and 230 ° C, preferably between about 180 ° C and about 200 ° C, on a substrate for the installation of a Road surface layer, asphalt intermediate layer, Asphaltbinder Mrs and / or asphalt sealant layer, wherein the term pad also includes the roadbed, is installed.
  • This is the installation temperature of the bituminous mixture.
  • the second working step of chipping with chippings which is required for a road surface covering layer, is dispensed with.
  • the Asphaltmischgut invention is, as well as the known from the prior Te chnik mastic asphalt, installed without additional compaction by rolling. Since the second step is eliminated, also eliminates the need for conventional mastic asphalt mix use of rubber tyred rollers and heavy smooth-shell rollers.
  • an aftertreatment of the asphalt mixture mixed with the substrate takes place by means of a light smooth-shelled roller, preferably a smooth-walled roller having a weight of less than 6 tons, in particular less than 4 tons.
  • a light smooth-shelled roller preferably a smooth-walled roller having a weight of less than 6 tons, in particular less than 4 tons.
  • the asphalt mixture according to the invention can be installed on a suitable substrate (for example an asphalt binder layer) with a classic heavy cast asphalt pavement.
  • a suitable substrate for example an asphalt binder layer
  • the present bituminous mixture can also be installed differently, namely in such a way that the mechanical installation takes place with a conventional lightweight road roller used for later to be compacted rolled asphalt.
  • the paver is operated with a slight pre-compaction of the resulting road surface layer.
  • the road paver preferably incorporates the asphalt layer with a precompression of approximately 1/3 of the maximum power through the first compaction unit of the paver. More preferably, further compaction units of the road paver are not used.
  • a road surface layer, intermediate layer, binder layer and / or sealing layer of the asphalt mixture according to the invention has a comparatively high stability and a high resistance to deformation. Corresponding tests have yielded excellent values.
  • bituminous mixture according to the invention Another positive characteristic of the bituminous mixture according to the invention is the fact that it is possible, unlike in Gussasphalteinbau compiler, the pad with To spray a pressure-sensitive adhesive or with a bitumen emulsion, for better bonding of the layers.
  • the asphalt mixture according to the invention even with a moist surface. The resulting steam escapes through the finest pores without affecting the bond.
  • the covering remains in the lower part of the cross-section as tight as a conventional mastic asphalt.
  • bituminous mixture according to the invention and the production of a roadway covering layer from this is that a road marking can already be finally applied immediately after the production of the roadway covering layer. Unlike the bituminous asphalt mix which is provided with chippings, a lane marking does not have to be applied again after a few weeks or months later.
  • bituminous mixture according to the invention can also be transported in the casting asphalt tilers used for the known mastic asphalt mix, ie stir constantly during transport and maintain it at a high temperature. Due to its different composition, however, the bituminous mixture according to the invention is not dependent on continuous, in particular intensive, stirring in a mastic asphalt cooker. Rather, the asphalt mixture according to the invention also remains stable in its mixture for a long time during transport and exhibits only a slight settling or separation tendency, if at all.
  • the bituminous mixture according to the invention permits a shift of the lower installation temperature limit by about 50 ° C., preferably 30 ° C., to a lower limit of about 160 ° C. to about 180 ° C. and thus lowers CO 2 emissions.
  • the surface texture of a road surface layer of the bituminous mixture according to the invention has such a favorable shape that a significant reduction in noise compared to the known mastic asphalt mix and in particular compared to previously classified as low noise asphalt topcoats, eg Splittmastixasp conception is to be expected.
  • the flat surface with grit grains lying relatively flat reduces the rolling noise of vehicles.
  • On the surface creates a favorable pore space by the rolling with the light smooth coat roller. This also promotes drainage in the wet.
  • the reduction in noise of an asphalt cover sheet produced with the bituminous mixture according to the invention is so favorable that the D strO value (correction value for different road surfaces according to RLS-90 guidelines for noise protection on roads) is equal to that of an open-pored asphalt, D strO -5 dBA) ,

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

Claims (14)

  1. Enrobé d'asphalte auto-plaçant, en particulier pour couches de surface de chaussée, couches intermédiaires asphaltiques, couches de liaison asphaltiques et/ou couches d'étanchéité asphaltiques, de préférence de la classe 0/8 ou 0/5, se composant de gravillon, de sable et de liant, ainsi que le cas échéant de substances d'addition, dans lequel la masse totale de tous les ingrédients vaut 100 % M., caractérisé en ce que la teneur en gravillon avec une taille de grain de roche > 1 mm se situe entre 65 % M. et 80 % M., en ce que la teneur en sable de sable naturel et/ou de sable de concassage avec une taille de grain > 0,063 mm et ≤ 2 mm se situe entre 2 % M. et 15 % M. , en ce que la teneur en matières de charge avec une taille de grain de roche ≤ 0,063 mm se situe entre 15 % M. et 20 % M., et en ce que la teneur en liant se situe entre 6,8 % M. et 7,5 % M.
  2. Enrobé d'asphalte selon la revendication 1, caractérisé en ce que la teneur en sable de sable naturel et/ou de sable de concassage avec une taille de grain > 0,063 mm et ≤ 2 mm se situe entre 6 % M. et 12 % M.
  3. Enrobé d'asphalte selon la revendication 1 ou 2, caractérisé en ce que la teneur en sable se compose entièrement ou principalement de sable naturel.
  4. Enrobé d'asphalte selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la teneur en matières de charge se compose entièrement ou principalement de roche calcaire.
  5. Enrobé d'asphalte selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le liant est un bitume ou au moins un liant thermoplastique ou des mélanges de ceux-ci.
  6. Enrobé d'asphalte selon la revendication 5, caractérisé en ce que le bitume est un bitume permettant la fabrication d'asphalte basse température, un bitume modifié par des polymères selon DIN EN 12591 ou un bitume pour la construction routière.
  7. Enrobé d'asphalte selon une des revendications 5 ou 6, caractérisé en ce que la viscosité du bitume est abaissée et/ou utilisée par l'utilisation de liants modifiant la viscosité ou par l'utilisation de substances d'addition modifiant la viscosité et la température de pose de l'enrobé d'asphalte est de ce fait abaissée.
  8. Couche de surface de chaussée, couche intermédiaire asphaltique, couche de liaison asphaltique et/ou couche d'étanchéité asphaltique d'un enrobé d'asphalte, caractérisée en ce qu'il est prévu un enrobé d'asphalte selon l'une quelconque des revendications 1 à 7.
  9. Procédé de réalisation d'une couche de surface de chaussée, d'une couche intermédiaire asphaltique, d'une couche de liaison asphaltique et/ou d'une couche d'étanchéité asphaltique d'un enrobé d'asphalte, caractérisée en ce que l'on utilise un enrobé d'asphalte selon l'une quelconque des revendications 1 à 7.
  10. Procédé selon la revendication 9, caractérisé en ce que l'on pose un enrobé d'asphalte avec une température comprise entre environ 180°C et 230°C, de préférence entre environ 180°C et environ 200°C.
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que la pose mécanisée est effectuée avec un finisseur.
  12. Procédé selon la revendication 11, caractérisé en ce que l'on utilise le finisseur avec un léger pré-compactage de la couche existante, en particulier de la couche de surface de chaussée.
  13. Procédé selon l'une quelconque des revendications 9 à 12, caractérisé en ce que l'on effectue un post-traitement de l'enrobé d'asphalte posé sur une couche sous-jacente au moyen d'un léger cylindre à surface lisse, de préférence avec un cylindre à surface lisse présentant un poids de moins de 6 t, en particulier de moins de 4 t.
  14. Procédé selon l'une quelconque des revendications 9 à 13, caractérisé en ce que l'on pose un marquage de chaussée définitif sur la couche de surface de chaussée immédiatement à la suite de la pose de l'enrobé d'asphalte comme couche de surface de chaussée.
EP10702839.1A 2009-02-03 2010-02-03 Enrobé d'asphalte coulé auto-compactable, pour couches de surface de chaussée, couches intermédiaires asphaltiques, couches de liaison asphaltiques et/ou couches d'étanchéité asphaltiques Not-in-force EP2393984B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009007301A DE102009007301B4 (de) 2009-02-03 2009-02-03 Gußasphaltmischgut für Fahrbahndeckschichten
PCT/EP2010/000657 WO2010089097A1 (fr) 2009-02-03 2010-02-03 Enrobé asphaltique auto-compactable, en particulier enrobé d'asphalte coulé, pour couches de surface de chaussée, couches intermédiaires asphaltiques, couches de liaison asphaltiques et/ou couches d'étanchéité asphaltiques

Publications (2)

Publication Number Publication Date
EP2393984A1 EP2393984A1 (fr) 2011-12-14
EP2393984B1 true EP2393984B1 (fr) 2016-04-20

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EP10702839.1A Not-in-force EP2393984B1 (fr) 2009-02-03 2010-02-03 Enrobé d'asphalte coulé auto-compactable, pour couches de surface de chaussée, couches intermédiaires asphaltiques, couches de liaison asphaltiques et/ou couches d'étanchéité asphaltiques

Country Status (4)

Country Link
US (1) US8394188B2 (fr)
EP (1) EP2393984B1 (fr)
DE (1) DE102009007301B4 (fr)
WO (1) WO2010089097A1 (fr)

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DE102011008190A1 (de) 2011-01-10 2012-07-12 Henning Kleemann Gussasphalt "Roadcover"
DE102011116474A1 (de) * 2011-10-20 2013-04-25 Baulabor Fienstedt Gmbh Verfahren zur Herstellung einer wenigstens zweischichtigen Asphaltkonstruktions und Asphaltmischgut hierfür
DE102013007449A1 (de) 2013-05-02 2014-11-06 Denso-Holding Gmbh & Co. Verkehrsflächenaufbau mit mindestens einer Zwischenschicht
FR3023284B1 (fr) * 2014-07-03 2020-07-24 Colas Sa Grave agglomeree scellee pour couche d'assise comprenant une forte proportion en gros granulats
CH717191A1 (de) 2020-03-04 2021-09-15 Kibag Bauleistungen Ag Vorrichtung zum Einbau von Gussasphalt auf einem Fahrbahnuntergrund und Verfahren zur Fertigung einer Asphaltfahrbahn.
CN112083138B (zh) * 2020-09-15 2022-11-01 中建西部建设西南有限公司 一种判定搅拌站废浆水可用于混凝土生产的方法

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Publication number Publication date
WO2010089097A1 (fr) 2010-08-12
DE102009007301A1 (de) 2010-08-12
EP2393984A1 (fr) 2011-12-14
US20120195684A1 (en) 2012-08-02
DE102009007301B4 (de) 2013-08-22
US8394188B2 (en) 2013-03-12

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