EP0781887B1 - Procédé d'obtention à froid d'enrobés denses bitumineux et dispositif pour la mise en oeuvre de ce procédé - Google Patents
Procédé d'obtention à froid d'enrobés denses bitumineux et dispositif pour la mise en oeuvre de ce procédé Download PDFInfo
- Publication number
- EP0781887B1 EP0781887B1 EP96402835A EP96402835A EP0781887B1 EP 0781887 B1 EP0781887 B1 EP 0781887B1 EP 96402835 A EP96402835 A EP 96402835A EP 96402835 A EP96402835 A EP 96402835A EP 0781887 B1 EP0781887 B1 EP 0781887B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- emulsion
- ebpf
- elements
- esbpf
- supply
- 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
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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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1013—Plant characterised by the mode of operation or the construction of the mixing apparatus; Mixing apparatus
- E01C19/104—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers
- E01C19/1045—Mixing by means of movable members in a non-rotating mixing enclosure, e.g. stirrers the mixture being discharged continuously
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1068—Supplying or proportioning the ingredients
Definitions
- the invention relates to a process for obtaining cold of dense bituminous mixes by total selective coating.
- the invention also relates to a device for setting process work.
- the present invention relates to dense bituminous mixes consisting of large elements and fine elements, the large elements being elements of particle size between 2 and 31.5 mm and the elements purposes being elements of particle size between 0 and 6 mm.
- dense bituminous mixes likely to be stored are usually obtained using a hot. This hot technique involves heating, either aggregates, or the coating binder.
- the document EP-A-0524031 describes a process for make dense bituminous mixes with a double coating according to which we successively add in a large elements mixer, a first emulsion, fine elements and a second emulsion, and we mix the assembly for a sufficient time to obtain a homogeneous mixture capable of being stored.
- the object of the invention is to overcome these drawbacks, and in particular to simplify the process, for example, by elimination of the ripening or storage period intermediate, and reduce production time and production costs.
- the object of the invention is achieved by a method cold asphalt for dense bituminous mixes by coating total selective, including the stages: introduction of large elements in a mixer, introduction of a first emulsion dosed so as to obtain a binder film homogeneous and uniform on large elements, introduction fine elements and a second emulsion dosed for obtain a total coating of the mixture;
- the cumulative dosage of two emulsions between 6 and 10%, is suitable for function of the richness module sought for the mixture.
- the second emulsion is obtained during mixing from the first emulsion by adding an agent to it.
- the second emulsion is obtained by mixing the first emulsion with an agent cationic aqueous, hereinafter also called SV solution.
- the first emulsion is a cationic emulsion with medium failure composed of pure bitumen or bitumen cutback.
- the second emulsion is a cationic emulsion stabilized composed of pure bitumen or fluidized bitumen.
- the SV solution advantageously includes additives which make it possible to obtain an emulsion having a viscosity between 3 and 1000 STV.
- the SV solution is composed of surfactants and acids in quality and quantity necessary to obtain a good coating of the mixture of large elements and fine elements, as well as sufficient maneuverability to ensure, in good conditions, transport and implementation of the dense asphalt when cold.
- the SV solution is advantageously dosed correctly 0.5 to 2% of the mixture of large and fine elements.
- the object of the invention is also achieved by a device for the cold production of dense bituminous mixes by total selective coating.
- This device includes a mixer, first supply means intended for the addition of large components, second means of supply intended for the addition of fine elements, third means of contribution intended for the addition of water, fourth means of supply intended for the addition of a first emulsion, and fifths supply means intended for the addition of a second emulsion.
- the device comprises also means of distributing the flow of the first emulsion allowing to derive a part of it for the preparation of the second emulsion by mixing the part derived from the first emulsion with an agent provided by of the sixth means of contribution, the fourth and fifth supply means being arranged so that the first and second emulsion enter the mixer at a defined distance from each other.
- the distance between the place of mixing of the first emulsion with the agent and the place of introduction of the second emulsion into the mixer is greater than 1 m.
- the necessary water can be introduced into the fifths means of supplying the second emulsion, downstream of the introduction of the SV solution.
- Figure 1 single figure, shows schematically the process of the invention and the means for implementing it artwork.
- the continuous process of the present invention provides performs a total selective coating of a material composed of large elements GG and fine elements GF, in a mixer 1 in which we first introduce the big GG elements fed by a first conveyor 2.
- the large elements have particle size 2/6, 2/10, 2/14, 2/20 or 4/6, 4/10 or 4/14 or 6/10, 6/14, 6/20.
- water is introduced by means of a first line 3 and a first EBPF emulsion (pure / fluidized bitumen emulsion) using a second pipeline 4.
- the first bitumen emulsion EBPF consists of a pure bitumen of grade 25/35 to 180/220 or of a fluidized bitumen. Pure bitumen corresponds to those normally used for obtaining non-storable mixes applied in layers of foundation or rolling. Fluidized bitumen has a viscosity adapted to the duration of storage of the mix and to the procedure of implementation, either manual or mechanized.
- the EBPF emulsion is an ECM65 type emulsion or ECM69, IREC ⁇ 140.
- the second ESBPF emulsion obtained after the introduction of an aqueous cationic agent, i.e. a SV solution, in the first EBPF emulsion, is a ECL type emulsion, IREC> 180.
- the SV solution is composed of surfactants such as tallow propylene polyamine and acids such as hydrochloric acid and petroleum thinner.
- the quantity and quantity of these two groups of additives are chosen so as to obtain a second emulsion having a viscosity between 3 and 1000 STV.
- the SV solution itself is stable for several weeks at a viscosity between 0.2 and 4 poises and can be stored at room temperature in a tank.
- the continuous process of the present invention provides thus a significant time saving compared to others processes by the fact that there is no intermediate storage of any granular fraction, or setting of the material.
- the continuous process of the present invention is more simple to implement insofar as it requires the preparation of a single emulsion.
- the device for the cold production of dense asphalt bituminous by total selective coating shown schematically in Figure 1 includes a mixer 1 driven by a motor 7.
- the mixer 1 is provided with two axes 8 and 9 each of which is provided with elements 10 formed and arranged to ensure a good mixture of successively added components in the mixer.
- the mixer 1 has a first end 11 to which is located a first entrance 31 as well as a second end 12 at which an outlet 22 is located mixer.
- Large GG elements are introduced in the kneader by first means of supply which includes the first conveyor 2.
- Conveyor 2 is arranged at the entrance 31 of mixer 1 so that the large elements GG y enter, either directly or, for example, by means of a chute.
- the fine elements GF are introduced later in the mixer 1 by means of second supply means of which part the second conveyor 5 arranged such that the elements GF ends enter mixer 1 through a second inlet 32 located approximately in the middle of the mixer 1.
- the water necessary to obtain a homogeneous mixture different components added successively in the mixer 1, is introduced by third supply means essentially comprising a first pipe 3 arranged close to the first inlet 31 of the mixer 1.
- the fourth supply means comprising a pump 14 connected by a pipe 15 to a distribution valve 16 and the second pipe 4 intended for the addition of the first EBPF emulsion to large GG elements.
- the first EBPF emulsion is stored in a tank 13 from which it is pumped by means of the pump 14 and through the pipe 15 to the valve distribution 16.
- the distribution valve 16 divides the flow of the first EBPF emulsion in a first partial quantity entering via the second line 4 into the mixer 1 and a second partial quantity passing through a pipeline 17 towards fifth means of contribution including the third pipe 6.
- the volume ratio between the quantity passing through the second line 4 and the quantity passing through line 17 is chosen from drifting from about 40:60 to about 60:40 approximately 40 to 60% of the flow of the first EBPF emulsion for the preparation of the second ESBPF emulsion.
- Line 17 is connected to the third line 6, by a mixer 21.
- This mixer 21 is formed by a connection piece having a connection double on one side, intended for connection of pipes 17 and 20, and a simple connector on the other side, intended for pipe connection 6.
- the SV solution is stored in a reservoir 18 and is supplied to mixer 21 by sixth supply means comprising a pump 19 and a pipe 20.
- the SV solution is introduced into the third line 6 to be mixed with the first EBPF emulsion to obtain the second ESBPF emulsion.
- the third line 6 is arranged in the mixer 1 so that the second ESBPF emulsion is introduced into the mixer 1 after the fine elements GF have been introduced into the mixer.
- the distance between the mixer 21, that is to say between the stitching location of the first EBPF emulsion for the introduction of the SV solution, and a mouth of the pipe 6 in the mixer 1, must be greater than 1 m to ensure good dispersion of the SV solution in the first EBPF emulsion.
- the addition water necessary for good dispersion of the ESBPF emulsion in the mixture of large GG elements and GF fine elements can be introduced at by means of a line 24 connected to line 6 in one junction point 25 arranged downstream of the introduction of the SV solution.
- the dense bituminous mixes obtained in the mixer 1 exit from it through an outlet 22 where they are taken into loads, for example, by means of transport the routing to storage or application places.
- the SV solution intended to be added to the first EBPF emulsion to obtain the second ESBPF emulsion can advantageously be the COLSTAB solution (brand Mark).
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working-Up Tar And Pitch (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Machines (AREA)
- Paints Or Removers (AREA)
- Road Paving Structures (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Organic Insulating Materials (AREA)
Description
- Il suffit de fabriquer une seule émulsion et de la stocker en usine ou en centrale d'enrobage.
- Le procédé permet de travailler avec des émulsions dont la température est supérieure à 50°C, ce qui assure une meilleure tenue du film de liant sur la fraction des gros éléments.
- Une seule pompe est nécessaire pour maítriser le dosage en liant.
- La maniabilité de l'enrobé peut être modulé durant l'enrobage en fonction des délais de transport, des conditions climatiques et de mise en oeuvre sans perturber la qualité d'enrobage des gros éléments.
Claims (10)
- Procédé d'obtention à froid d'enrobés denses bitumineux par enrobage sélectif total, comprenant les étapes:introduction dans un malaxeur de gros éléments (GG), leur granulométrie étant comprise entre 2 et 31,5 mm,introduction d'une première émulsion (EBPF) dosée de manière à obtenir un film de liant homogène et uniforme sur les éléments gros (GG),introduction d'éléments fins (GF), leur granulométrie étant comprise entre 0 et 6 mm, etintroduction d'une deuxième émulsion (ESBPF) dosée pour obtenir un enrobage total du mélange,
- Procédé selon la revendication 1, caractérisé en ce que la deuxième émulsion (ESBPF) est obtenue par mélange de la première émulsion (EBPF) avec un agent cationique aqueux (SV).
- Procédé selon la revendication 2, caractérisé en ce que l'agent cationique aqueux (SV) comprend des additifs qui permettent d'obtenir une deuxième émulsion ayant une viscosité comprise entre 3 et 1000 STV.
- Procédé selon la revendication 2 ou 3, caractérisé en ce que l'agent cationique aqueux (SV) est dosé à raison de 0,5 à 2% du mélange des gros éléments et des éléments fins.
- Dispositif pour l'obtention à froid d'enrobés denses bitumineux par enrobage sélectif total, comprenant un malaxeur (1), des premiers moyens d'apport (2) destinés à l'ajout de gros éléments (GG), les gros éléments ayant une granulométrie comprise entre 2 et 31,5 mm, des deuxièmes moyens d'apport (5) destinés à l'ajout d'éléments fins (GF), les éléments fins ayant une granulométrie comprise entre 0 et 6 mm, des troisièmes moyens d'apport (3) destinés à l'ajout d'eau, des quatrièmes moyens d'apport (4) destinés à l'ajout d'une première émulsion (EBPF), et des cinquièmes moyens d'apport (6) destinés à l'ajout d'une deuxième émulsion (ESBPF), caractérisé en ce qu'il comprend également des moyens de répartition (16) du flux de la première émulsion (EBPF) permettant d'en dériver une partie pour la préparation de la deuxième émulsion (ESBPF) par mélange de la partie dérivée de la première émulsion (EBPF) avec un agent (SV) rapporté par des sixièmes moyens d'apport (19, 20), les quatrièmes (4) et cinquièmes (6) moyens d'apport étant disposés de manière à ce que la première et la deuxième émulsions entrent dans le malaxeur (1) à une distance définie l'une de l'autre.
- Dispositif selon la revendication 5, caractérisé en ce que la distance entre un endroit de mélange (21) de la première émulsion (EBPF) avec l'agent (SV) et un endroit (23) d'introduction de la deuxième émulsion (ESBPF) dans le malaxeur est supérieure à 1 m.
- Dispositif selon la revendication 5 ou 6, caractérisé en ce que les moyens de répartition (16) sont formés par une vanne de répartition 40/60 dérivant environ 60% du flux de la première émulsion (EBPF) pour la préparation de la deuxième émulsion (ESBPF).
- Dispositif selon la revendication 5 ou 6, caractérisé en ce que les moyens de répartition (16) sont formés par une vanne de répartition 60/40 dérivant environ 40% du flux de la première émulsion (EBPF) pour la préparation de la deuxième émulsion (ESBPF).
- Dispositif selon l'une quelconque des revendications 5 à 8, caractérisé en ce qu'il comprend une canalisation (24) reliée en un point de jonction (25) aux cinquièmes moyens d'apport (6) et permettant d'apporter de l'eau nécessaire à une bonne dispersion de la deuxième émulsion (ESBPF) dans le mélange (GG) et les éléments fins (GF).
- Dispositif selon la revendication 9, caractérisé en ce que le point de jonction (25) est disposé en aval de l'introduction de l'agent (SV) dans la première émulsion (EBPF).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9515677 | 1995-12-28 | ||
FR9515677A FR2743095B1 (fr) | 1995-12-28 | 1995-12-28 | Procede d'obtention a froid d'enrobes denses bitumineux et dispositif pour la mise en oeuvre de ce procede |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0781887A1 EP0781887A1 (fr) | 1997-07-02 |
EP0781887B1 true EP0781887B1 (fr) | 2002-08-14 |
Family
ID=9486097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96402835A Expired - Lifetime EP0781887B1 (fr) | 1995-12-28 | 1996-12-19 | Procédé d'obtention à froid d'enrobés denses bitumineux et dispositif pour la mise en oeuvre de ce procédé |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP0781887B1 (fr) |
AT (1) | ATE222310T1 (fr) |
CZ (1) | CZ383496A3 (fr) |
DE (1) | DE69622981T2 (fr) |
DK (1) | DK0781887T3 (fr) |
ES (1) | ES2179921T3 (fr) |
FR (1) | FR2743095B1 (fr) |
HU (1) | HUP9603542A3 (fr) |
IS (1) | IS4402A (fr) |
PL (1) | PL317701A1 (fr) |
PT (1) | PT781887E (fr) |
RO (1) | RO116411B1 (fr) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MD2122C2 (ro) * | 2002-05-02 | 2003-09-30 | Сергей ДЫЛДА | Procedeu de obtinere a bitumului |
FR2847596B1 (fr) | 2002-11-21 | 2005-08-19 | Demeter Technologie Sa | Procede de fabrication, notamment a froid, d'un enrobe, et enrobe obtenu par la mise en oeuvre de ce procede |
FR2853918B1 (fr) | 2003-04-18 | 2005-06-24 | Htp Est | Procede et dispositif de mise en oeuvre a chaud d'un enrobe bitumineux |
US7114843B2 (en) | 2003-07-21 | 2006-10-03 | Htp Est | Method of manufacturing a bituminous coated aggregate mix |
FR2960890B1 (fr) * | 2010-06-04 | 2021-11-26 | Eurovia | Procede de fabrication d'enrobes hydrocarbone a froid, enrobes hydrocarbones a froid a maniabilite controlee et leur utilisation pour la realisation de revetements routiers |
DE202010017924U1 (de) * | 2010-12-06 | 2013-03-26 | Joachim Eberhardt | Zum Kalteinbau geeigneter Asphaltbaustoff |
FR3056609B1 (fr) | 2016-09-26 | 2018-09-14 | Eurovia | Procede d'indentation d'un echangeur thermique recyclable a haute cadence dans une infrastructure terrestre |
EP4150000B1 (fr) | 2020-05-11 | 2024-03-27 | Vinci Construction | Cationic latex modified hydrocarbon binder emulsions and their use in the preparation of bituminous products |
FR3121444B1 (fr) | 2021-04-02 | 2023-04-14 | Eurovia | Liants bitumineux offrant une résistance accrue aux agressions chimiques |
FR3131920A1 (fr) | 2022-01-17 | 2023-07-21 | Eurovia | Composition de liant clair et ses applications pour les revêtements routiers et d’aménagement |
FR3133202A1 (fr) | 2022-03-02 | 2023-09-08 | Eurovia | Procédé de fabrication d’enrobés hydrocarbonés à froid et enrobés hydrocarbonés à froid à montée en cohésion rapide |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2623219B1 (fr) * | 1987-11-17 | 1990-04-06 | Maheas Rene | Methode pour fabriquer a froid des enrobes denses bitumineux stockables |
FR2679274B1 (fr) * | 1991-07-19 | 1993-11-26 | Colas Sa | Procede d'obtention a froid d'enrobes denses bitumineux. |
DK179391D0 (da) * | 1991-10-30 | 1991-10-30 | Leo Hove | Fremgangsmaade til fremstilling af emulsionsbeton |
CH685342A5 (fr) * | 1993-02-12 | 1995-06-15 | Colas S A Colas S A | Procédé pour la réalisation d'un mélange formé d'un agrégat et d'un liant. |
-
1995
- 1995-12-28 FR FR9515677A patent/FR2743095B1/fr not_active Expired - Fee Related
-
1996
- 1996-12-19 HU HU9603542A patent/HUP9603542A3/hu unknown
- 1996-12-19 DE DE69622981T patent/DE69622981T2/de not_active Expired - Fee Related
- 1996-12-19 AT AT96402835T patent/ATE222310T1/de not_active IP Right Cessation
- 1996-12-19 ES ES96402835T patent/ES2179921T3/es not_active Expired - Lifetime
- 1996-12-19 DK DK96402835T patent/DK0781887T3/da active
- 1996-12-19 EP EP96402835A patent/EP0781887B1/fr not_active Expired - Lifetime
- 1996-12-19 PT PT96402835T patent/PT781887E/pt unknown
- 1996-12-20 IS IS4402A patent/IS4402A/is unknown
- 1996-12-23 RO RO96-02469A patent/RO116411B1/ro unknown
- 1996-12-23 PL PL96317701A patent/PL317701A1/xx unknown
- 1996-12-27 CZ CZ963834A patent/CZ383496A3/cs unknown
Also Published As
Publication number | Publication date |
---|---|
PT781887E (pt) | 2002-12-31 |
DE69622981T2 (de) | 2003-04-30 |
DE69622981D1 (de) | 2002-09-19 |
CZ383496A3 (en) | 1997-07-16 |
RO116411B1 (ro) | 2001-01-30 |
PL317701A1 (en) | 1997-07-07 |
HUP9603542A3 (en) | 1998-03-02 |
FR2743095B1 (fr) | 1998-03-20 |
DK0781887T3 (da) | 2002-12-09 |
ATE222310T1 (de) | 2002-08-15 |
EP0781887A1 (fr) | 1997-07-02 |
ES2179921T3 (es) | 2003-02-01 |
FR2743095A1 (fr) | 1997-07-04 |
HU9603542D0 (en) | 1997-02-28 |
IS4402A (is) | 1997-06-29 |
HUP9603542A2 (en) | 1997-09-29 |
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