EP0795059B1 - Verfahren zur beschichtung einer strassenfläche - Google Patents

Verfahren zur beschichtung einer strassenfläche Download PDF

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Publication number
EP0795059B1
EP0795059B1 EP95937001A EP95937001A EP0795059B1 EP 0795059 B1 EP0795059 B1 EP 0795059B1 EP 95937001 A EP95937001 A EP 95937001A EP 95937001 A EP95937001 A EP 95937001A EP 0795059 B1 EP0795059 B1 EP 0795059B1
Authority
EP
European Patent Office
Prior art keywords
layer
binder
stone
finer
stones
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 - Lifetime
Application number
EP95937001A
Other languages
English (en)
French (fr)
Other versions
EP0795059A1 (de
Inventor
Leo Hove
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.)
ESHA GROUP BV
Original Assignee
Esha Holding BV
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Filing date
Publication date
Application filed by Esha Holding BV filed Critical Esha Holding BV
Publication of EP0795059A1 publication Critical patent/EP0795059A1/de
Application granted granted Critical
Publication of EP0795059B1 publication Critical patent/EP0795059B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
    • E01C7/351—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively hydraulical binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively hydraulic binders

Definitions

  • the present invention relates to a method of providing a road surface with an overlay, normally for general road maintenance and restoration of good antiskid properties.
  • the discussed cold methods can be modified so as to be much better applicable even for the said more critical works.
  • a basic idea is that the finer stone fraction is applied not as an individual full layer of stones on the top of the lower, coarser stone fraction, but only to the extent of filling out the upper voids of the lower layer of coarse stones, in association with another basic idea of applying the required binder to the finer stone fraction not as a bed underneath this fraction, but rather by a spraying of a low viscosity binder against the top side of this fraction, such that the binder, seeking rapidly downwardly, will very soon effect an initial binding of the finer stone fraction, which will also be mechanically stabilized in the upper voids between the underlying coarse stones.
  • the downwardly penetrating low-viscid binder which, however, may be an emulsion of a high viscid bitumen material, which may be adapted to 'break' relatively soon so as to cause an effective binding both of the lower coarse stone fraction to the former road surface and of the upper finer stone fraction to orin the upper voids of the lower, coarse stone fraction, without the finer stones being present above the top side of the coarse stone layer.
  • the finer stone will not behave as loose stones, and the binder will soon sink down from the surface, whereby the traffic on the road can soon be resumed.
  • the major part of the surface area will be constituted by the smaller stones, which will provide a texture in favour of good skid resistance and low noise generation.
  • the bituminous binder will effectively fill out the voids between the stones at least in the lower half of the overlay, thus providing for improved stress releiving and waterproofing.
  • bituminous binder preferably a polymer modified bituminous emulsion to ensure waterproofing and perfect bonding to the old surface as well as for temporarily securing the first chipping layer in place.
  • the first chipping layer of relatively coarse stones e.g. 12-14 mm
  • the first chipping layer of relatively coarse stones is laid out in a single layer, preferably not fully compact, so as to cover some 95% of the surface area.
  • a second layer of smaller nominally single sized chippings e.g. 6-7 mm is then applied, taking care not to disturb greatly the first layer, the dosage being controlled to the effect that the second layer fills up the voids between the coarse stones without any substantial overheight therein.
  • the combined layers are compacted to interlock the second layer with the first layer and make the top sides of the two layers flush with each other.
  • a low viscosity bituminous binder preferably a polymer modified bituminous emulsion with good adhesion and breaking characteristics, is evenly applied to the surface such that the remaining voids in the first layer are filled and a surface texture is clearly visible.
  • the binder will flow down in contact with all the stones, thus producing an effective bonding of and in the combined layer.
  • the treatment is finished by applying a thin top layer of still smaller chippings, e.g. sand, in order to prevent contact of the binder with the traffic tyres in the initial stages and to aid the quick build up of skid resistance.
  • chippings e.g. sand
  • the actual quantities of chippings, their grading and size, can be used to calculate the voids in the layers and to dictate the binder addition to achieve the desired texture, given the traffic weight and speed, the degree of site difficulty and the characteristics of the existing road surface.
  • the chippings in the second layer are preferably pre-coated with bituminous binder or chemically coated in order to ensure that the applied bituminous binder or binder emulsion will penetrate the underlying layer and not break so quickly as to form a thick coating on the surface aggregate. Also, the overlay will then be better stabilized should water be present, particularly when freeze-thaw cycles occur.
  • hot binders such as cutback bitumen would not allow for satisfactory grouting or penetration of the binder into the voids, unless the viscosity is undesirably low, and would not, therefore, provide the same durability as when using emulsion binders, which may be of low viscosity, but nevertheless be based on high viscosity bitumen.
  • the invention will comprise also the use of hot binders, which may present advantages in terms of costs on lightly trafficked roads.
  • the stones in the first layer should not be coarser than 20-24 mm and not finer than some 8 mm.
  • the secondary stones should preferably be only one fraction smaller, e.g. 8-10 mm, so that these stones will still be 'relatively large' and not liable to be deposited on top of each other.
  • the invention is not limited to the use of any special aggregate or binder qualities, so the method may be widely varied in this respect, as long as satisfying results are obtained, subject to different requirements.
  • both of the chipping layers may be pre-coated.
  • other materials e.g. recycled asphalt, graded into the respective fractions.
  • a certain content of fine fractions may be tolerable in both chippings, and in connection with graded aggregates the fine fraction may be used in the final top layer, when used.
  • the first layer may be a low cost aggregate such as gravel stones with low skid resistance properties, followed in the second layer by a higher skid resistant chipping, thus maximizing the resources of higher cost quality aggregate.
  • various artificial aggregates may be used, e.g. slag or calcined bauxite, cementious mortar or cement concrete, formed or crushed, or any suitable waste product, with or without pre-coating.
  • geotextiles or other fibre reinforcement between the layers, including grids prepared from metal or polymer compounds, especially between the existing road surface and the first layer.
  • the binder may be selected from many usable substances such as cutback bitumen, foamed bitumen and modified versions of these with additives or polymers or fibres or filler, added to the binder or during construction, and all emulsion variants thereof.
  • any suitable breaking control system may be used.
  • Further binder examples will be thermo-setting binders and other resin binders including polyurethane, acrylic, polysulphide, expoxide, and all two component binder systems.
  • Different binders may be selected for the respective grouting application and bond coating, where the latter is used.
  • a cost saving may be obtained by using unmodified bituminous binder in one or more applications.
  • a slurry surfacing as a final wearing surface or a fine slurry seal, possibly applied as a spray.
  • a suitable slurry will be a stone fraction of 0.2-0.3 mm in a fast breaking bituminous emulsion.
  • the invention will be applicable also in connection with the construction of new roads and on cement concrete, on airfields, car-park decks etc., and even for providing waterproof layers in buildings. Aggregates may be coloured, if desired.

Landscapes

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

Claims (9)

  1. Verfahren zum Herstellen einer Straßenoberfläche mit einer durch Bindemittel gebundenen Decke durch aufeinanderfolgendes Legen von Steinschichten mit gröberen und feineren Partikeln, dadurch gekennzeichnet, daß die erste Schicht der gröberen Steine mit oder ohne vorheriges Aufbringen des Bindemittels auf die bestehende Straßenoberfläche aufgelegt wird, wobei die Steine als eine leicht lockere Schichtstruktur verteilt werden, wonach der Anteil der feineren Steine in einer Dosierung gelegt wird, daß sie die oberen Löcher der groben Steinschicht ohne erkennbare weitere Zunahme der Schicht im wesentlichen ausfüllen, wonach die kombinierte Schicht verdichtet wird und ein Bindemittel auf die resultierende Fläche aufgebracht wird, welches Auftragsviskosität hat, die ausreichend niedrig ist, um das Eindringen des Bindemittels in die unteren Löcher der kombinierten Schicht zu konditionieren, und wobei das Bindemittel in einer hohen Dosierung aufgebracht wird, die dem Füllen der unteren und der oberen Löcher bis zu einem Niveau geringfügig unterhalb der Oberfläche der verdichteten Schichtstruktur entspricht.
  2. Verfahren nach Anspruch 1, bei dem der Anteil der feineren Steine ohne jegliche Zwischenbearbeitung direkt auf die erste Schicht gelegt wird.
  3. Verfahren nach Anspruch 1, bei dem eine letzte, vorwiegend vorübergehende Oberflächenschicht nach dem Aufbringen des Bindemittels aufgebracht wird, beispielsweise als Anteil noch feinerer Steine, wie Sand, im trockenen Zustand oder als Schlamm, der in einer bituminösen Emulsion suspendiert ist.
  4. Verfahren nach Anspruch 1, bei dem die feineren Steine nur um einen Bruchteil kleiner sind als diejenigen der ersten gröberen Schicht, beispielsweise 14:10 mm.
  5. Verfahren nach Anspruch 1, bei dem sowohl Steine und Bindemittel in kaltem Zustand verwendet werden.
  6. Verfahren nach Anspruch 1, bei dem wenigstens einer der Steinanteile mit einer bituminösen Substanz vorbeschichtet oder chemisch beschichtet ist, um wasserabweisend zu sein.
  7. Verfahren nach Anspruch 1, bei dem wenigstens einer der Steinanteile zerkleinerten Recycling-Asphalt aufweist.
  8. Verfahren nach Anspruch 1, bei dem die erste, grobe Steinschicht auf einer Basisschicht aus einem Bindemittel mit höherer Viskosität als das auf die kombinierte Schicht aufgebrachte Bindemittel aufgebracht wird.
  9. Verfahren nach Anspruch 1, bei dem die Aggregate wenigstens teilweise aus künstlichem Material bestehen, wie Schlacke, kalziniertes Bauxit, Zementmörtel oder Zementbeton.
EP95937001A 1994-11-28 1995-11-28 Verfahren zur beschichtung einer strassenfläche Expired - Lifetime EP0795059B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DK135694 1994-11-28
DK135694A DK135694A (da) 1994-11-28 1994-11-28 Fremgangsmåde til overfladebehandling af vejbelægninger
DK1356/94 1994-11-28
PCT/DK1995/000478 WO1996017130A1 (en) 1994-11-28 1995-11-28 A method of providing a road surface with an overlay

Publications (2)

Publication Number Publication Date
EP0795059A1 EP0795059A1 (de) 1997-09-17
EP0795059B1 true EP0795059B1 (de) 2001-10-17

Family

ID=8103958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95937001A Expired - Lifetime EP0795059B1 (de) 1994-11-28 1995-11-28 Verfahren zur beschichtung einer strassenfläche

Country Status (5)

Country Link
EP (1) EP0795059B1 (de)
AU (1) AU3924595A (de)
DE (1) DE69523332T2 (de)
DK (1) DK135694A (de)
WO (1) WO1996017130A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005032148A1 (de) * 2005-07-07 2007-01-11 Ute Gaul Verfahren und Erhaltung von Verkehrsflächen sowie danach erhältliche Kompaktschutzschicht

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779424B1 (fr) * 1998-06-08 2000-08-18 Colas Sa Composition et procede de realisation d'une couche de roulement d'une route, couche de roulement correspondant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147195A (en) * 1935-03-27 1939-02-14 Sam E Finley Method of constructing pavements
US2220149A (en) * 1937-10-14 1940-11-05 Finley Sam Everett Method of constructing bituminousbound wearing surfaces for roadways and streets
DE2039627A1 (de) * 1970-08-10 1972-02-24 Strabag Bau Ag Verfahren zum Herstellen der Verschleissschicht einer Strassenbefestigung
GR71832B (de) * 1983-05-27 1983-06-29 Giorgo Mih Kalo

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005032148A1 (de) * 2005-07-07 2007-01-11 Ute Gaul Verfahren und Erhaltung von Verkehrsflächen sowie danach erhältliche Kompaktschutzschicht

Also Published As

Publication number Publication date
DK135694A (da) 1996-05-29
WO1996017130A1 (en) 1996-06-06
EP0795059A1 (de) 1997-09-17
DE69523332T2 (de) 2002-07-11
DE69523332D1 (de) 2001-11-22
AU3924595A (en) 1996-06-19

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