EP2393984A1 - Selbstverdichtendes asphaltmischgut, insbesondere gussasphaltmischgut, für fahrbahndeckschichten, asphaltzwischenschichten, asphaltbinderschichten und/oder asphaltdichtungsschichten - Google Patents
Selbstverdichtendes asphaltmischgut, insbesondere gussasphaltmischgut, für fahrbahndeckschichten, asphaltzwischenschichten, asphaltbinderschichten und/oder asphaltdichtungsschichtenInfo
- Publication number
- EP2393984A1 EP2393984A1 EP10702839A EP10702839A EP2393984A1 EP 2393984 A1 EP2393984 A1 EP 2393984A1 EP 10702839 A EP10702839 A EP 10702839A EP 10702839 A EP10702839 A EP 10702839A EP 2393984 A1 EP2393984 A1 EP 2393984A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- asphalt
- layers
- mass
- mixture
- sand
- 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
Links
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
- Self-compacting asphalt mix in particular mastic asphalt mix, for
- the invention relates to a self-compacting asphalt mix, in particular the Gussasphalt70, especially a Gussasphaltmischgut, for roadway, asphalt pavement, asphalt binder layers and / or Asphaltdichtungstiken in road construction with the features of the preamble of claim 1.
- the invention is also a road surface, asphalt pavement, Asphaltbinder- layer
- the invention furthermore relates to a method for producing a roadway covering layer from an asphalt mixture according to the invention having the features of the preamble of claim 9.
- the invention relates to a method for transporting self-compacting asphalt mixture Site of use according to the preamble of claim 15.
- Road surface layers, intermediate layers, binder layers and / or asphalt sealing layers are distinguished according to two installation methods, rolled asphalt and mastic asphalt.
- Rolld 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 designed so that compaction through the use of heavy rollers is not required.
- the mix already contains the aggregates (grit and sand) for the formation of a textured, splinter-rich and thus non-slip road surface of the road surface course.
- Road surface layers, intermediate layers, binder layers and / or sealing layers are all types of cover, intermediate, binder and sealing layers in road and road construction, even where the respective layers are not used in the narrower sense. It is also about all types of other surfaces, including bridges and tunnels.
- Mastic asphalt 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 in particular mineral mixtures, generally aggregate mixtures of class 0/8 (with a maximum particle size of 8 mm) or 0/5 (with a particle size of 5 mm) or even 0/3 ( with a maximum grain size of 3 mm). These mixtures apply in particular to noise-optimized road surface layers.
- the grain 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.
- the application of chippings in rolled mastic asphalt involves the steps of heating, wrapping with bitumen, on-site transport and storage, spreading a defined amount (12-15 kg / m 2), kneading with a rubber tyred roller, temper rolling with a smooth shroud, sweeping, picking and Transport away the excess spill. This procedure also results in risks for grip, noise and ride comfort. If the mastic asphalt mix has too much mortar on the surface, then the chippings sink. With too little mortar on the surface of the subsequently applied Abstreusplitt not liable. Optionally, too rough surfaces result due to different installation thicknesses and too low installation temperatures or even by unfavorable use of rollers.
- mastic asphalt is the most economical and long-lasting pavement of asphalt for heavily used traffic areas.
- the tightness of mastic asphalt protects the binder, ie 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.
- Binder content between 6.8% by mass and 8.5% by mass.
- “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 can 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.
- the above-indicated problem is solved in a self-compacting asphalt mix, in particular a mastic asphalt mix, with the features of the preamble of claim 1 by the features of the characterizing part of claim 1.
- the asphalt mixture according to the invention thus has the following composition:
- Binder content between 6.0% by mass and 8.5% by mass, preferably between 6.8% by mass and 7.5% by mass.
- 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 from 0.1% by mass to 3% by mass Amount included is from the total sand content in a range of 2% by mass to 15% by mass, preferably 6% by mass 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 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 (see Merkblatt für Temperaturabsenkung von Asphalt (M TA), 2006 edition), a polymer Modified bitumen according to DIN EN 12591 or a taubaubitumen is.
- bituminous mixture also applies to the bituminous mixture according to the invention that the viscosity of the bitumen can be lowered and / or changed by the use of viscosity-changing binders or by the use of viscosity-modifying additives to the binder and thus the installation temperature of the bituminous mixture can be lowered.
- Bituminous also with use of suitable additives to a lower installation temperature (after mixing and transport) in a range of about 160 ° C to about 180 0 C, or to about 190 0 C in comparison with a lower temperature limit so far of about 200 0 C to about 230 0 C.
- bituminous mixture according to the invention does not have to be subjected to any additional skimming step on the road, although it is much less sensitive in terms of 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 0 C, and 23O 0 C, preferably between about 180 0 C and about 200 0 C, on a pad for the installation of a
- the installation method with paver or with cast asphalt screed ensures that the asphalt overlay mix is in cross section with different properties, in particular the arrangement of the void content and the air pores, but also the tightness. So there is a classic especially dense Asphaltmischgut in the lower area.
- the second working step of chipping with chippings which is required for a road surface covering layer, is dispensed with.
- the asphalt mixture according to the invention as well as the known from the prior art mastic asphalt, installed without additional compaction by rolling. Since the second step is eliminated, the use of rubber wheeled rollers and heavy smooth-walled rollers is also unnecessary for conventional mastic asphalt mixtures.
- a subsequent treatment 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 base (eg asphalt binder course) with a classic heavy cast asphalt screed.
- a suitable base eg asphalt binder course
- 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 paver used for later-to-be-compacted rolled asphalt.
- a conventional lightweight road paver used for later-to-be-compacted rolled asphalt.
- 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.
- the invention also provides a method for transporting the bituminous mixture to a site where it is to be installed to a road surface layer, intermediate layer, binder layer and / or sealing layer.
- this transport method it is expediently possible according to the invention for the transport to take place by means of conventional (normal) trucks, if appropriate with built-in insulating and / or heating device, ie trucks without stirring device for the bituminous mixture, in particular asphalt mix.
- 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 inventive composite bituminous mixture allowed compared to conventional mastic asphalt a displacement of the lower installation temperature limit by about 50 0 C, preferably 30 0 C, to a lower limit of about 160 ° C to about 18O 0 C, thereby reducing 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 Gussasphaltmischgut and especially against previously classified as low-noise asphalt topcoats, eg stone mastic asphalt, 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 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 asphalt mixture according to the invention is so favorable that the D str o value (correction value for different road surfaces according to RLS-90 - guidelines for noise protection on roads) that of an open-pored asphalt, D Str o - 5 dBA ) is the same.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Road Paving Machines (AREA)
Abstract
Description
Claims
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 (de) | 2009-02-03 | 2010-02-03 | Selbstverdichtendes asphaltmischgut, insbesondere gussasphaltmischgut, für fahrbahndeckschichten, asphaltzwischenschichten, asphaltbinderschichten und/oder asphaltdichtungsschichten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2393984A1 true EP2393984A1 (de) | 2011-12-14 |
EP2393984B1 EP2393984B1 (de) | 2016-04-20 |
Family
ID=42139004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10702839.1A Not-in-force EP2393984B1 (de) | 2009-02-03 | 2010-02-03 | Selbstverdichtendes gussasphaltmischgut, für fahrbahndeckschichten, asphaltzwischenschichten, asphaltbinderschichten und/oder asphaltdichtungsschichten |
Country Status (4)
Country | Link |
---|---|
US (1) | US8394188B2 (de) |
EP (1) | EP2393984B1 (de) |
DE (1) | DE102009007301B4 (de) |
WO (1) | WO2010089097A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1005827A (fr) * | 1947-10-01 | 1952-04-16 | Perfectionnements apportés à des bétons hydro-carbones servant notamment pour la construction de revêtements routiers | |
DE1769198A1 (de) * | 1968-04-19 | 1971-03-04 | Strabag Bau Ag | Bituminoeser Baustoff fuer Deckschichten,insbesondere fuer Fahrbahndecken und Dichtungsschichten im Wasserbau und Verfahren zum Einbauen desselben |
DE1926808B1 (de) * | 1969-05-27 | 1970-10-29 | Strabag Bau Ag | Verfahren zum Herstellen der Verschleissschicht einer Strassenbefestigung |
FR2050761A5 (en) * | 1969-06-24 | 1971-04-02 | Mines Bitume Asph Centre | Asphalt road surfacing compsn |
DE2329689A1 (de) * | 1972-06-13 | 1974-01-03 | Mayreder Kraus & Co Ing | Verfahren zur herstellung eines walzasphaltes und nach dem verfahren hergestellter walzasphaltbelag |
US3776748A (en) * | 1972-06-20 | 1973-12-04 | English Clays Lovering Pochin | Method of preparing surfacing composition for roads;airfield runways and the like |
DE2253495C3 (de) * | 1972-10-31 | 1979-04-12 | Alfred Kunz & Co, 8000 Muenchen | Decke für Verkehrswege u.dgl |
DE3036537C2 (de) * | 1980-09-27 | 1983-07-21 | Degussa Ag, 6000 Frankfurt | Gußasphaltmischung |
FR2661928B2 (fr) * | 1987-04-16 | 1992-10-30 | Lefebvre Entr Jean | Complexe d'etancheite d'ouvrage routier et procede pour sa mise en óoeuvre. |
DE3716691A1 (de) * | 1987-05-19 | 1988-12-01 | Becker Bau Gmbh & Co Kg | Verwendung von feinteiligem gasbeton als zusatzstoff im asphaltmischgut zur herstellung von guss- und walzasphalt |
DE19538774C1 (de) * | 1995-10-18 | 1996-11-21 | Strabag Strasen Und Tiefbau Ag | Gußasphalt mit geringem Gewicht |
EP1431348A1 (de) * | 2002-12-16 | 2004-06-23 | KRATON Polymers Research B.V. | Mit Blockcopolymeren modifizierte Bitumenbahnen |
DE102004029869B4 (de) * | 2004-06-16 | 2007-03-22 | BAM Bundesanstalt für Materialforschung und -prüfung | Straßenbelag |
FR2932797B1 (fr) * | 2008-06-20 | 2011-07-01 | Colas Sa | Utilisation d'un liant a base de biopolymere dans des applications routieres, pararoutieres ou liees au genie civil. |
FR2944811B1 (fr) * | 2009-04-22 | 2015-04-17 | Colas Sa | Procede de preparation d'un enrobe a chaud permettant d'obtenir des enrobes comprenant une teneur reduite en liant |
-
2009
- 2009-02-03 DE DE102009007301A patent/DE102009007301B4/de active Active
-
2010
- 2010-02-03 WO PCT/EP2010/000657 patent/WO2010089097A1/de active Application Filing
- 2010-02-03 EP EP10702839.1A patent/EP2393984B1/de not_active Not-in-force
-
2011
- 2011-08-03 US US13/197,113 patent/US8394188B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2010089097A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010089097A1 (de) | 2010-08-12 |
DE102009007301A1 (de) | 2010-08-12 |
US20120195684A1 (en) | 2012-08-02 |
DE102009007301B4 (de) | 2013-08-22 |
EP2393984B1 (de) | 2016-04-20 |
US8394188B2 (en) | 2013-03-12 |
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