EP0319702B1 - Revêtement pour couches portantes et son procédé de fabrication - Google Patents

Revêtement pour couches portantes et son procédé de fabrication Download PDF

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Publication number
EP0319702B1
EP0319702B1 EP88118172A EP88118172A EP0319702B1 EP 0319702 B1 EP0319702 B1 EP 0319702B1 EP 88118172 A EP88118172 A EP 88118172A EP 88118172 A EP88118172 A EP 88118172A EP 0319702 B1 EP0319702 B1 EP 0319702B1
Authority
EP
European Patent Office
Prior art keywords
bitumen
water content
weight
din
hydraulic binder
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
EP88118172A
Other languages
German (de)
English (en)
Other versions
EP0319702A2 (fr
EP0319702A3 (en
Inventor
Heinz Dipl.-Ing. Goldt
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.)
Deutag Asphalttechnik GmbH
Original Assignee
Deutag Asphalttechnik GmbH
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 Deutag Asphalttechnik GmbH filed Critical Deutag Asphalttechnik GmbH
Priority to AT88118172T priority Critical patent/ATE67540T1/de
Publication of EP0319702A2 publication Critical patent/EP0319702A2/fr
Publication of EP0319702A3 publication Critical patent/EP0319702A3/de
Application granted granted Critical
Publication of EP0319702B1 publication Critical patent/EP0319702B1/fr
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
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre

Definitions

  • the present invention relates to a covering for base layers, in particular according to ZTVT-StB 86, consisting of natural and / or artificial minerals and a binder mixture of bitumen and hydraulic binder.
  • the invention further relates to the method for producing such coverings.
  • ZTVT-StB 86 contains the additional technical regulations and guidelines for base layers in road construction, published by the Federal Ministry of Transport, Road Construction Department.
  • the base layers for road construction are then divided into three classes, namely base layers without binders, base layers with hydraulic binders and base layers with bituminous binders.
  • the base layers without binders are generally used as the bottom base layer. These are mixtures of mineral mixtures graded according to the regulations.
  • Base layers with hydraulic binders consist of unbroken and / or broken mineral mixtures and hydraulic binders. It is a very rigid construction that does not allow any deformation.
  • the disadvantage of these base layers is the very high sensitivity to cracks, which can penetrate into the bituminous ceilings above.
  • Base courses with hydraulic binders are mainly used under cement-bound road surfaces.
  • Base layers with bituminous binders are a mixture that consists of graded minerals and road bitumen or pitch bitumen or highly viscous road pitch as a binder. These base layers are manufactured in hot installation.
  • bituminous base layers With bituminous base layers, deformations within the road structure can occur under heavy traffic loads and unfavorable influences, in particular if the substructure is not sufficiently load-bearing or soft (e.g. rutting).
  • the advantage of bituminous base layers is that they are very flexible and therefore remain largely free of cracks.
  • a method for producing a building material for base layers for road surface consisting of a mineral grain mixture and, based on the weight of the mineral grain mixture, 2 to 15 parts by weight of a hydraulically active filler, 1 to 5 parts by weight of bitumen as a binder and 4 to 15 parts by weight of water using mineral grain coated with bitumen, 70 to 90% by weight of the mineral grain mixture being mixed with the hydraulically active filler and the water and separately the remaining 30 to 10% by weight of the mineral grain mixture with bitumen or tar or a mixture thereof, whereupon the two mixtures are roughly mixed together.
  • This process is intended to create base layers that have an approximately high load-bearing capacity like cement floor, but in any case have the load-bearing capacity of the hydraulically consolidated mineral mixture and have a self-healing ability that is characteristic of the construction methods with bitumen or tar.
  • the hydraulic setting is slowed down by the addition of bitumen, so that no large, closed, formed plates can arise, which also result in large tears when torn apart. Rather, a large number of small, irregular cracks are deliberately sought, but these are partially glued together by the bitumen.
  • the adhesive force must be maintained, which gives the building material a self-healing ability.
  • a maximum of 30% by weight of the grains of the mineral mixture may be coated with the bitumen, since a building material in which the coating of the mineral material with the bitumen binder exceeds the entire 30% by weight no longer achieves the task can. This method has obviously not proven itself in practice, so that the patent was dropped again relatively early after it was granted.
  • a semi-rigid covering for traffic areas is based on a similar principle, in which a void-rich supporting structure made of a mineral mixture coated with bituminous binders is used, the cavities of which are completely filled with a cement mortar with a binder additive and in which the cement mortar is used as a binder additive contains a bitumen emulsion.
  • a void-rich, coarse-grained mineral mixture is pre-coated with bitumen, tar or bituminous binders modified with additives and a mortar is made separately from a sand mixture with the addition of water, cement and a bitumen emulsion, then the whole is mixed, transported, installed and condensed.
  • the pores of the coarse-grained portion coated with bitumen are filled with a hydraulically setting, finely divided component. No information is available on the amounts of the binders used.
  • bitumen emulsion-asphalt mixtures with mixed binding material for road construction are known, in which the cationic bitumen emulsion and an alkaline earth metal oxide and / or hydroxide containing hydraulic powder are used together with conventional mineral additives.
  • the asphalt mixtures described therein contain 0.5 to 8% by weight of hydraulic powder and 2.5 to 10% by weight of cationic bitumen emulsion and 82 to 97% by weight of conventional mineral additives. From the examples it can be seen that at least 7% bitumen emulsion and at least 3% alkaline ash were used and that road surfaces were then produced therefrom.
  • the effect of this mixture is that the free alkali earth metal oxide or hydroxide content of the hydraulic powder improves the adhesiveness of the bitumen and thereby increases the initial cohesion of the structure.
  • the mineral additive is therefore always premixed dry with the basic ash and only then sprayed with the cationic bitumen emulsion. Mixing only took up to 42 seconds. The mixture was then applied and compacted.
  • the invention has set itself the task of making base layers, in particular base layers according to ZTVT-StB 86, better, cheaper, more durable and yet easy to produce, the disadvantages of base layers with hydraulic binders and base layers with bituminous binders being avoided, but retaining the advantages thereof should be.
  • the content of bitumen and hydraulic binder is 1.0 to 3.0% by weight, the content of both together is at least 3% by weight. is and
  • the original water content approximately corresponds to the water content that enables the densest storage (measured according to Proctor (DIN 18127)).
  • the content of bitumen and hydraulic binder is preferably 2.0 to 2.5% by weight.
  • the total water content is measured according to the Proctor method (DIN 18127). Water contents are preferably used which are 0 to 20%, based on the water content, below the optimal water content according to Proctor.
  • the anionic aqueous emulsion of bitumen which, in contrast to the mixture according to DE-OS 3245068, the cationic bitumen emulsion, is not broken by the addition of the alkaline hydraulic binders.
  • the water content used according to the invention which approximately corresponds to the water content which enables the densest storage according to Proctor, is required in order to make the mixture installable and sufficiently compressible on the construction site. The mixture can therefore be premixed, transported, installed and compacted in the usual periods of time without the need for special precautionary measures or very rapid work.
  • the full load-bearing capacity of the material is only achieved after the hydraulic binding agent has set, but the built-in and compacted layer has sufficient load-bearing capacity to absorb the stress caused by construction site traffic and to ensure construction progress.
  • the hydraulic binder preferably corresponds to the standards DIN 1164, DIN 1060 and DIN 18506.
  • a particular advantage of the base layers according to the invention is that they make do with relatively small amounts of binders, namely 3 to 6% by weight, preferably 4 to 5% by weight, based on the base layer mixture.
  • base layers are formed which, after the hydraulic binder has set, have Marshall stabilities and Marshall flow values which correspond to the requirements of ZTVT-StB-86 table 4.2 for bituminous base layer mix of the type CS for special loads.
  • Another advantage of the method according to the invention is that considerable amounts of recycled building materials can be used as minerals. This material can be added to the minerals alone or in any quantity, provided the particle size distribution, shape and other requirements comply with the regulations of ZTVT-StB 86.
  • the mixtures can be processed in conventional forced or free-fall mixers.
  • the paving is carried out using conventional pavers or the concrete paving train.
  • the compression takes place in the usual way by means of a built-in device and / or roller insert.
  • the base layers obtained in this way are passable and resilient for the further expansion of the pavement.
  • bitumen 2.0% by weight was added to this mixture in the form of a 50% bitumen emulsion, anionic, with a viscosity of 4 mm / 20 ° C.: 20 to 30 seconds and 2.0% by weight of PZ 35 cement F.
  • the amount of water was measured so that it was 10% below the amount that allows the tightest storage, measured according to Proctor (DIN 18127).
  • the base layer obtained therefrom showed a Marshall stability of 12.0 kN and a Marshall flow value of 2.3 mm after 28 days. This material meets the requirements of ZTVT-StB-86 table 4.2 for bituminous base layer mix of type CS for special demands.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Paints Or Removers (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Outer Garments And Coats (AREA)

Claims (9)

1. Revêtement pour couches portantes, en particulier suivant le document ZTVT-StB 86 (Prescriptions et directives techniques complémentaires pour les couches portantes dans la construction des routes, édition 1986, du Ministère Fédéral des Transports de la RFA), constitué de matières minérales naturelles et/ou artificielles et d'un mélange faisant fonction de liant, réalisé à partir de bitume et de liant hydraulique, caractérisé en ce que, rapportées au mélange de la couche portante, les teneurs en bitume et en liant hydraulique sont chacune de 1,0 à 3,0% en poids, en ce que la teneur des deux éléments ensemble est d'au moins 3% en poids et en ce que la teneur totale en eau correspond sensiblement à la teneur en eau qui permet le dépôt le plus compact (mesuré suivant Proctor (norme DIN 18127)).
2. Revêtement suivant la revendication 1, caractérisé en ce que les teneurs en bitume et en liant hydraulique sont chacune de 2,0 à 2,5% en poids.
3. Revêtement suivant la revendication 1 ou la revendication 2, caractérisé en ce que la teneur totale en eau se trouve de 0 à 20%, rapportée à la teneur en eau, au dessous de la teneur optimale en eau suivant Proctor.
4. Revêtement suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que le bitume est ajouté sous la forme d'une émulsion aqueuse anionique.
5. Revêtement suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que le liant hydraulique correspond aux normes DIN 1164, DIN 1060 et DIN 18506.
6. Procédé de fabrication de revêtements de couches portantes, en particulier suivant le document ZTVT-StB 86, constitués de matières minérales naturelles et/ou artificielles et d'un mélange faisant fonction de liant, réalisé partir de bitume et de liant hydraulique, caractérisé en ce qu'on mélange les matières minérales en même temps, sans chauffage, avec pour chacune une teneur de 1,0 à 3,0% en poids et avec assez d'eau pour que la teneur en eau corresponde sensiblement à la teneur en eau permettant le dépôt le plus compact (mesuré suivant Proctor (DIN 18127)), étant entendu que la teneur de l'ensemble bitume et liant hydraulique atteint au moins 3% en poids et que le bitume est ajouté sous la forme d'une émulsion aqueuse anionique comportant un agent mouillant et que le mélange terminé est compacté de la manière habituelle, après mise en place.
7. Procédé suivant la revendication 6, caractérisé en ce que les teneurs en bitume et en liant hydraulique sont chacune de 2,0 à 2,5% en poids.
8. Procédé suivant la revendication 6 ou la revendication 7, caractérisé en ce que la teneur totale en eau se trouve de 0 à 20%, rapportée à la teneur en eau, au dessous de la teneur optimale en eau suivant Proctor.
9. Procédé suivant l'une quelconque des revendications 6 à 8, caractérisé en ce que le liant hydraulique correspond aux normes DIN 1164, DIN 1060 et DIN 18506.
EP88118172A 1987-12-08 1988-11-01 Revêtement pour couches portantes et son procédé de fabrication Expired - Lifetime EP0319702B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88118172T ATE67540T1 (de) 1987-12-08 1988-11-01 Belag fuer tragschichten und verfahren zur herstellung desselben.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3741458 1987-12-08
DE3741458 1987-12-08

Publications (3)

Publication Number Publication Date
EP0319702A2 EP0319702A2 (fr) 1989-06-14
EP0319702A3 EP0319702A3 (en) 1989-08-09
EP0319702B1 true EP0319702B1 (fr) 1991-09-18

Family

ID=6342060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118172A Expired - Lifetime EP0319702B1 (fr) 1987-12-08 1988-11-01 Revêtement pour couches portantes et son procédé de fabrication

Country Status (3)

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EP (1) EP0319702B1 (fr)
AT (1) ATE67540T1 (fr)
DE (1) DE3864988D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2684699B1 (fr) * 1991-12-05 1998-11-20 Beugnet Sa Procede de double traitement a froid d'un materiau granulaire destine a la technique routiere.
FR2725196B1 (fr) * 1994-09-29 1996-12-20 Colas Sa Beton pour chaussees et sols industriels a base de liant composite
DE19812246C2 (de) * 1998-03-20 2001-06-28 Pci Augsburg Gmbh Fließfähiges, hydraulisch abbindendes Mörtelsystem und seine Verwendung
DE202010017924U1 (de) * 2010-12-06 2013-03-26 Joachim Eberhardt Zum Kalteinbau geeigneter Asphaltbaustoff
DE102011116474A1 (de) * 2011-10-20 2013-04-25 Baulabor Fienstedt Gmbh Verfahren zur Herstellung einer wenigstens zweischichtigen Asphaltkonstruktions und Asphaltmischgut hierfür

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2265308C2 (de) * 1972-06-21 1982-11-11 Rheinische Kalksteinwerke GmbH, 5603 Wülfrath Verfahren zum Herstellen eines Baustoffes für Tragschichten für den Straßenoberbau
DE2623556B2 (de) * 1976-05-26 1980-01-03 Strabag Bau-Ag, 5000 Koeln Halbstarrer Belag für Verkehrsflächen und Verfahren zu seiner Herstellung
DE2741137A1 (de) * 1976-10-29 1978-05-03 Muntzer Verfahren zur herstellung eines emulsionsfoermigen bindemittels, insbesondere aus bitumen, ausgehend von einer anionischen mutteremulsion, und verfahren zur aufbereitung eines aus mineralischen feststoffen und diesem bindemittel bestehenden asphaltmischgutes
HU183719B (en) * 1981-12-07 1984-05-28 Zalaegerszegi Koezuti Epitoe V Asphalt mixture with a mixed adhesive

Also Published As

Publication number Publication date
EP0319702A2 (fr) 1989-06-14
EP0319702A3 (en) 1989-08-09
DE3864988D1 (de) 1991-10-24
ATE67540T1 (de) 1991-10-15

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