EP0158560B1 - Verfahren zur Erneuerung von Fahrbahnen - Google Patents

Verfahren zur Erneuerung von Fahrbahnen Download PDF

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Publication number
EP0158560B1
EP0158560B1 EP85400578A EP85400578A EP0158560B1 EP 0158560 B1 EP0158560 B1 EP 0158560B1 EP 85400578 A EP85400578 A EP 85400578A EP 85400578 A EP85400578 A EP 85400578A EP 0158560 B1 EP0158560 B1 EP 0158560B1
Authority
EP
European Patent Office
Prior art keywords
roadway
aggregates
old
crushed
compensating
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
Application number
EP85400578A
Other languages
English (en)
French (fr)
Other versions
EP0158560A1 (de
Inventor
Camille Bouchu
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.)
Entreprise Razel Freres SA
Original Assignee
Entreprise Razel Freres SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Entreprise Razel Freres SA filed Critical Entreprise Razel Freres SA
Priority to AT85400578T priority Critical patent/ATE27719T1/de
Publication of EP0158560A1 publication Critical patent/EP0158560A1/de
Application granted granted Critical
Publication of EP0158560B1 publication Critical patent/EP0158560B1/de
Expired 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
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
    • 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
    • E01C3/00—Foundations for pavings
    • E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
    • 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
    • E01C3/00—Foundations for pavings
    • E01C3/04—Foundations produced by soil stabilisation

Definitions

  • the present invention relates to a process for renovating roadways, in particular those of national and departmental roads.
  • the base layer may be either of bituminous concrete or of gravel (mixture of sand and gravel) treated with hydraulic binders, both of a grain size greater than that of the concrete of the wearing course, and the foundation layer is generally in untreated gravel.
  • the floor is raised, which can be annoying in cities and towns and cannot be done indefinitely.
  • the second solution it is expensive, since it consists in removing and bringing to the landfill the old materials and bringing and installing new materials.
  • Another process consists of regenerating the wearing course in the following way: the road surface is planed down to the thickness of the bituminous material, a mixture of bitumen and stones is recovered, it is regenerated in the factory or on the road by thermoregeneration and reuse it to form a new wearing course. This process only renovates this surface layer.
  • an apparatus which separates the surface layer of asphalt or asphalt / concrete from a roadway, which sprays the sampled material in situ while mixing it with a stabilizing binder (lime, emulsified cement or asphalt) and which discharges the material thus treated on the site of the material sampled to form a new surface layer, possibly after application on the surface of a new layer of asphalt or cement (column 1, line 30 to column 2, line 2).
  • a stabilizing binder limestone, emulsified cement or asphalt
  • This method also only renovates the surface layer.
  • the apparatus used which operates by disaggregation and milling, does not provide a crushed material and does not allow either to control the particle size of the treated material or to weigh this material in order to add therein a dosed amount of the binder.
  • An article by Harold J. Halm (Transportation Research News - USA - N ° 89 - July / August 1980 - pp. 6 - 10) concerns the recycling of concrete, and in particular the reuse of the upper layer of cement concrete in roadways , that is to say from the noblest part of the roadways, to manufacture aggregates intended to constitute the foundation and / or base layer and possibly the upper layer of a new conventional roadway (page 6, first and fifth paragraphs). It is still only the upper layer which is reused and it is not treated in situ.
  • the recovered materials are transported to a crushing plant, and from there to a concrete plant, supplying the aggregates, which will be transported to the on-site processing machine (sliding formwork machine) at the location of a new roadway to be built.
  • Mobile machines are fitted with wheels or tracks.
  • This operation consists in scarifying the roadway with a usual scarifier or ripper over the width and depth provided for reprocessing.
  • the goal is to obtain a decohesive material, sufficiently loose to allow it to be loaded into the recovery machine.
  • a pavement is treated over half its width first and the other half afterwards.
  • the blocks obtained by scarification, and particularly those coming from the surface bituminous layers, will have a sufficiently small dimension to be admitted in the crusher, this dimension being able to go, according to the crusher, up to 700 mm for thick products and even 1000 mm for flat products.
  • This operation is carried out with mobile machines (such as loaders, lifting belts, armored), which are provided with penetration and collection means for the removal of the dislocated material and means for transfer to the crusher of the material removed.
  • a percussion or jaw crusher is used, of a type such that it can absorb 700 mm blocks which can go up to 1000 mm for flat products. It is adjusted to make a crushed piece passing through the 40 mm mesh.
  • the corrective material can be deposited in beads on the dislocated material in front of the mobile pick-up, transfer and crushing machines, in which case it is mixed, during the crushing, with the dislocated material, or be leveled by means of a gravel spreader, downstream of the crusher, on the crushed material, spilled and spread on the ground; materials are then leveled using a grader and kneading using a pulp-mixer to incorporate the correcting aggregates.
  • the speed of advance of the machine for collecting the dislocated material is adjusted by means of machines known distribution and spreading such as a gravel truck provided with a metering device.
  • knowing the hourly throughput of the crusher makes it possible to adjust the throughput of the binder and of the water to be added.
  • a known device such as an integrating scale placed after the outlet of the crusher
  • the silo containing the binder and the water tank are mounted on the chassis of the mixer and are provided with metering pumps.
  • known machines are used such as a powder spreader with adjustable flow rate for the binder and a sprinkler with adjustable flow rate for water.
  • the material After fine adjustment by means of a flatness grader in the transverse direction of the deposited layer, the material is compacted into a single layer.
  • the choice of compactor depends on the properties of the material treated and the thickness expected.
  • Layers of 45 cm can be used with a tire compactor of 50,000 N per wheel and a vibrating compactor of class V 5 (load per centimeter of generator of the vibrating cylinder greater than 450 N), N denoting the newton.
  • the wearing course formed on the compacted material can be made of bituminous concrete or be a surface coating (gravel deposited on a bitumen film).

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Solid Wastes (AREA)
  • Road Paving Structures (AREA)
  • Road Repair (AREA)
  • Road Signs Or Road Markings (AREA)

Claims (8)

1. Verfahren zur Renovierung von Fahrbahnen, die allgemein eine Unterbauschicht, eine Grundschicht und eine Verschleißschicht aufweisen, bei dem man die alte Fahrbahn durch eine Behandlung erneuert, die ein Aufbrechen der bestehenden Fahrbahn, ein Sammeln und eine Zerteilung des auseinandergebrochenen Materials und ein Heranschaffen von neuen Materialien umfaßt, die mit dem zerteilten Material vermischt werden und die Ausgleichszuschlagstoffe, stabilisierende Substanzen in Form eines Bindemittels und Wasser aufweisen, dadurch gekennzeichnet, daß das Aufbrechen der bestehenden Fahrbahn über ihre gesamte Dicke und auf solche Art bewirkt wird, daß man Stücke mit einer größten Abmessung von 700 mm für dicke Stücke und von 1.000 mm für flache Stücke erhält, daß das Zerkleinern des aufgebrochenen Materials so bewirkt wird, daß man zerkleinertes Material mit einer Korngröße von 0 bis 40 mm erhält, und daß die genannten aufeinanderfolgenden Schritte der Behandlung, des Aufbrechens, des Sammelns, des Zerkleinerns, des Heranschaffens von neuen Materialien an Ort und Stelle durch eine Reihe von bewegbaren Maschinen bewirkt wird, die sich auf der Fahrbahn entsprechend der Behandlung derselben weiterbewegen, wobei diese Reihe der Maschinen auch die nachfolgenden Schritte ausführt, das heißt:
entsprechend wie die alte Fahrbahn entfernt wird, eine einzige Schicht aus regeneriertem Material, die die alten Unterbau- und Grundschichten ersetzt und die alle Materialien, die so von der alten Fahrbahn der Wiederverwertung zugeführt werden,und hinzugefügte neue Materialien umfaßt, auf dem Boden zu verteilen und einzuebnen,
diese einzige Schicht zu verdichten, nachdem die Oberfläche in Querrichtung genau eingeebnet ist,
den Vorgang auf konventionelle Weise zu beenden, indem eine Verschleißschicht aufgebracht wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man dem zerkleinerten Material 0 bis 15 Gewichtsprozent Ausgleichszuschlagstoffe hinzufügt.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß man dem zerkleinerten Material zu seiner Stabilisierung 3 bis 8 Gewichtsprozent, bezogen auf das Gesamtgewicht des zerkleinerten Materials und der Ausgleichszuschlagstoffe, eines Bindemittels hinzufügt, und daß man 0 bis 10 % Gewichtsprozent, bezogen auf das genannte Gesamtgewicht, an Wasser hinzufügt.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß man die Ausgleichszuschlagstoffe auf das aufgebrochene Material aufbringt, bevor dieses zerkleinert wird, wodurch gleichzeitig die Zuschlagstoffe dem Material zugegeben werden.
5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß man die Ausgleichszuschlagstoffe auf das zerkleinerte Material hinter der Zerkleinerungsmaschine aufbringt, nachdem dieses auf dem wieder zu bedeckenden Boden verteilt ist, wobei die Ausgleichszuschlagstoffe dann durch Einebnen und Misch- und Knetvorgänge in das zerkleinerte Material eingebracht werden.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß man die Stabilisierung des zerkleinerten Materials hinter der Zerkleinerungsmaschine bewirkt, nachdem dieses auf dem wieder zu bedeckenden Boden verteilt ist, wobei das hinzugefügte Bindemittel und Wasser durch Einebnen und Misch- und . Knetvorgänge in das zerkleinerte Material eingebracht werden.
7. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß man die Stabilisierung des zerkleinerten Materials durch Hinzufügung von einem Bindemittel und Wasser in einer beweglichen Mischmaschine bewirkt, die das zerkleinerte Material direkt am Auslaß der Zerkleinerungsmaschine wieder aufnimmt, wobei die Stabilisierung auf diese Weise vor dem Verteilen des Materials auf dem wieder zu bedeckenden Boden bewirkt wird.
8. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß man die Stabilisierung des zerkleinerten Materials hinter der Zerkleinerungsmaschine bewirkt, nachdem dieses auf dem wieder zu bedeckenden Boden verteilt ist, wobei das hinzugefügte Bindemittel und Wasser dann gleichzeitig mit den Ausgleichszuschlagstoffen durch Einebnen und Misch- und Knetvorgänge in das zerkleinerte Material eingebracht werden.
EP85400578A 1984-03-30 1985-03-26 Verfahren zur Erneuerung von Fahrbahnen Expired EP0158560B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85400578T ATE27719T1 (de) 1984-03-30 1985-03-26 Verfahren zur erneuerung von fahrbahnen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8405071 1984-03-30
FR8405071A FR2562109B1 (fr) 1984-03-30 1984-03-30 Procede de renovation des chaussees

Publications (2)

Publication Number Publication Date
EP0158560A1 EP0158560A1 (de) 1985-10-16
EP0158560B1 true EP0158560B1 (de) 1987-06-10

Family

ID=9302679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400578A Expired EP0158560B1 (de) 1984-03-30 1985-03-26 Verfahren zur Erneuerung von Fahrbahnen

Country Status (4)

Country Link
EP (1) EP0158560B1 (de)
AT (1) ATE27719T1 (de)
DE (1) DE3560242D1 (de)
FR (1) FR2562109B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5026206A (en) * 1990-03-30 1991-06-25 Oconnor Patrick L Pavement and base recycle method and apparatus
DE4237512A1 (de) * 1992-11-08 1994-05-11 Wirtgen Gmbh Verfahren und Vorrichtung zur Sanierung beschädigter Fahrbahnen
DE102006062760A1 (de) 2006-08-31 2008-07-17 Bundesland Mecklenburg-Vorpommern, vertreten durch den Betrieb für Bau und Liegenschaften M-V Verfahren zur Sanierung einer Fahrbahn, vorzugsweise aus Beton
GB2443191B (en) * 2006-10-27 2011-08-31 Clemmens O Keefe Llp Recycling of waste soil
FR3051202B1 (fr) * 2016-05-10 2019-03-22 Colas Dispositif pour le recyclage in situ de materiaux d'une chaussee de circulation et concasseur specialement adapte

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732023A (en) * 1969-03-11 1973-05-08 Metradon Ass Soil stabilization apparatus

Also Published As

Publication number Publication date
DE3560242D1 (en) 1987-07-16
EP0158560A1 (de) 1985-10-16
ATE27719T1 (de) 1987-06-15
FR2562109B1 (fr) 1986-09-26
FR2562109A1 (fr) 1985-10-04

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