EP1323867A1 - Process for preparing a bituminous aggregate for roads - Google Patents

Process for preparing a bituminous aggregate for roads Download PDF

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Publication number
EP1323867A1
EP1323867A1 EP02293205A EP02293205A EP1323867A1 EP 1323867 A1 EP1323867 A1 EP 1323867A1 EP 02293205 A EP02293205 A EP 02293205A EP 02293205 A EP02293205 A EP 02293205A EP 1323867 A1 EP1323867 A1 EP 1323867A1
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EP
European Patent Office
Prior art keywords
weight
binder
adhesion promoter
bituminous
coating
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.)
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Application number
EP02293205A
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German (de)
French (fr)
Inventor
Jérôme Marcilloux
Daniel Claudel
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Appia
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Appia
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Publication date
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Publication of EP1323867A1 publication Critical patent/EP1323867A1/en
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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
    • E01C19/1059—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 preparing a mix. bituminous for road application in which one thins by heating a solid bituminous binder at temperature ambient and mixed with solid fragments so to coat these with bitumen.
  • the coated materials thus obtained are mainly used in basecoat, foundation or wearing course when road construction.
  • asphalt storable obtained according to one of the two preceding processes, and which generally use more or less quantities significant fluxes of carbochemical origin (derived from coal), petrochemical (petroleum derivatives) or vegetable (derived from vegetable oils).
  • the humidity of the aggregates must be regulated by a water supply depending on the state initial of these.
  • the object of the invention is to remedy the above drawbacks.
  • the invention relates in particular to a method of the kind defined in introduction, and provides that said solid fragments are at room temperature when brought into contact with the binder, and that the bituminous binder contains at least one fluxing.
  • the use of cold aggregates dispenses with the use a hot mix station.
  • Use of a binder heated avoids the drawbacks associated with emulsions.
  • the binder can be taken directly from a truck, without require local heating.
  • the surface condition of the cold aggregates does not allow a sufficient adhesion of the binder, they can be treated beforehand by an adhesion promoter.
  • a surfactant allows in particular to move the film of water present on the surface in facilitating its later evacuation. Besides, it leads to hydrophobation which promotes the wetting of materials by bitumen during coating.
  • silica-limestone aggregates The following formula of silica-limestone aggregates is used: particle size 4/6 75% particle size 2/4 25%.
  • a batch of these aggregates is treated at room temperature, without heating or drying, with an emulsion having the following composition: H 2 O 50% Oleoflux 18 30 % Emulsamine L 60 20%.
  • Oleoflux 18 and Emulsamine L 60 are respectively an ester sunflower methyl (obtained by transesterification of sunflower oil) sold by the OLÉOROUTE Company and a diamine marketed by CECA, and constitute together the adhesion promoter, Emulsamine L 60 also playing the role of emulsifier.
  • the batch thus treated and one batch not treated are coated with 5.8% of a mixture of bitumen and methyl ester sunflower as a flux, the latter constituting 18% of the mixed.
  • the temperature of the binder for coating is 160 ° C. Without the adhesion promoter, the coating is not satisfactory.
  • the use of the promoter at a content of approximately 0.5% in the coating allows a much better coating, the possible uncoated dots quickly becoming so by contact.
  • the product stability has been verified over a month by a test empirical process of separating aggregates using a spatula immersed in the mix, after 2 to 3 minutes of brewing.
  • mixes prepared in the above examples particularly suitable as storable mixes, the invention is not limited to such coated materials. She is equally applicable for the realization of asphalt intended for construction and maintenance work of roads.

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

Abstract

Production of a bituminous road coating composition involves covering cold granulates with a hot bituminous binder after optional treatment with an adhesion promoter. A coating having the qualities of hot coatings can be obtained without having recourse to heavy-weight installations. <??>Production of a bituminous coating for roads involves heating a bituminous binder that is solid at ambient temperature, and then mixing the fluidized bituminous binder with solid fragments so that the fragments are coated with bitumen. The binder is heated to a temperature below its flash point and comprising 80-200 degrees C. <??>The solid fragments can be treated with an adhesion promoter prior to being mixed with the bituminous binder. The adhesion promoter contains a surfactant in weight ratio of 0.05-2 weight %, preferably 0.1-1 weight %, to the coating, and a flux in weight ratio of 0.05-1 weight %, preferably 0.1-0.5 weight %, to the coating. The weight proportion of the surfactant in the adhesion promoter is 10-80% preferably 40-70%. The weight content of flux in the binder is at least 0.1%, preferably at least 1%, and at most 50%, preferably at most 30%. <??>The pretreatment of the solid fragments with the adhesion promoter is carried out with an emulsion in which the weight content of adhesion promoter is 10-80%, preferably 40-70%.

Description

L'invention concerne un procédé pour préparer un enrobé bitumineux pour application routière dans lequel on fluidifie par chauffage un liant bitumineux solide à température ambiante et on le mélange à des fragments solides de manière à enrober ceux-ci de bitume.The invention relates to a process for preparing a mix. bituminous for road application in which one thins by heating a solid bituminous binder at temperature ambient and mixed with solid fragments so to coat these with bitumen.

Les techniques de fabrication des enrobés routiers sont principalement de deux types:

  • à chaud: granulats et liant sont chauffés séparément puis mélangés à une température comprise entre 100 et 200 °C;
  • à froid: les granulats froids sont enrobés par une émulsion de bitume après ajustement de la teneur et traitement préalable éventuel de tout ou partie des granulats.
The techniques for manufacturing road mixes are mainly of two types:
  • hot: aggregates and binder are heated separately and then mixed at a temperature between 100 and 200 ° C;
  • cold: the cold aggregates are coated with a bitumen emulsion after adjusting the content and possible preliminary treatment of all or part of the aggregates.

Les enrobés ainsi obtenus sont principalement utilisés en couche de base, de fondation ou de roulement lors de la construction d'une route.The coated materials thus obtained are mainly used in basecoat, foundation or wearing course when road construction.

On utilise également, par petites quantités, des enrobés dits stockables, obtenus selon l'un des deux procédés précédents, et qui font en général appel à des quantités plus ou moins importantes de fluxants d'origine carbochimique (dérivés du charbon), pétrochimique (dérivés du pétrole) ou végétale (dérivés d'huiles végétales).We also use, in small quantities, so-called asphalt storable, obtained according to one of the two preceding processes, and which generally use more or less quantities significant fluxes of carbochemical origin (derived from coal), petrochemical (petroleum derivatives) or vegetable (derived from vegetable oils).

La présence de fluxants permet d'éviter le durcissement du liant au stockage. Le produit peut par conséquent être utilisé pendant une période qui peut aller jusqu'à plusieurs mois. L'utilisation s'effectue manuellement ou avec des moyens mécaniques habituels, notamment pour les applications suivantes:

  • déflachage de chaussées;
  • réfections provisoires de tranchées
  • réparations ponctuelles;
  • mise à niveau de regards;
  • garnissage de nids de poules.
The presence of fluxing agents makes it possible to avoid hardening of the binder during storage. The product can therefore be used for a period of up to several months. The use is carried out manually or with usual mechanical means, in particular for the following applications:
  • pavement clearing;
  • temporary trench repairs
  • ad hoc repairs;
  • upgrade of manholes;
  • filling of potholes.

Le développement continu de ces enrobés résulte de leur souplesse d'emploi puisqu'ils sont disponibles en permanence et nécessitent un équipement de mise en oeuvre simple.The continuous development of these mixes results from their flexibility of use since they are always available and require simple processing equipment.

Quelles que soient les applications des enrobés, les procédés de fabrication connus présentent des inconvénients.Whatever the asphalt applications, the processes known manufacturing have drawbacks.

Dans le cas des techniques à froid, l'humidité des granulats doit être réglée par un apport d'eau dépendant de l'état initial de ces derniers.In the case of cold techniques, the humidity of the aggregates must be regulated by a water supply depending on the state initial of these.

D'utilisation simple, ce mode opératoire présente souvent une qualité d'enrobage moyenne. Il est en outre sensible à l'eau et nécessite le plus souvent l'ajustement de la formule de l'émulsion aux granulats utilisés, ce qui peut poser problème par exemple en cas de variation d'approvisionnement.Easy to use, this procedure often presents a average coating quality. It is also sensitive to water and most often requires adjusting the formula for the aggregate emulsion used, which can be problematic for example in the event of a variation in supply.

Quant à l'enrobage à chaud, il nécessite des installations lourdes qui ne sont pas toujours disponibles en fonction des entreprises qui fabriquent ou de l'implantation des points de vente.As for hot coating, it requires installations heavy which are not always available depending on the companies that manufacture or implant points of sale.

Le but de l'invention est de remédier aux inconvénients ci-dessus.The object of the invention is to remedy the above drawbacks.

L'invention vise notamment un procédé du genre défini en introduction, et prévoit que lesdits fragments solides sont à température ambiante lors de leur mise en contact avec le liant, et que le liant bitumineux contient au moins un fluxant.The invention relates in particular to a method of the kind defined in introduction, and provides that said solid fragments are at room temperature when brought into contact with the binder, and that the bituminous binder contains at least one fluxing.

La mise en oeuvre des granulats froids dispense de l'utilisation d'un poste d'enrobage à chaud. L'utilisation d'un liant chauffé évite les inconvénients liés aux émulsions. Le liant chaud peut être prélevé directement dans un camion, sans nécessiter de moyens de chauffage sur place.The use of cold aggregates dispenses with the use a hot mix station. Use of a binder heated avoids the drawbacks associated with emulsions. The binder can be taken directly from a truck, without require local heating.

Si l'état de surface des granulats froids ne permet pas une adhérence suffisante du liant, on peut les traiter préalablement par un promoteur d'adhérence. En venant couvrir la périphérie des granulats, un agent tensio-actif permet notamment de déplacer le film d'eau présent sur la surface en facilitant son évacuation postérieure. Par ailleurs, il conduit à une hydrophobation qui favorise le mouillage des matériaux par le bitume lors de l'enrobage.If the surface condition of the cold aggregates does not allow a sufficient adhesion of the binder, they can be treated beforehand by an adhesion promoter. By coming to cover the periphery of the aggregates, a surfactant allows in particular to move the film of water present on the surface in facilitating its later evacuation. Besides, it leads to hydrophobation which promotes the wetting of materials by bitumen during coating.

Des caractéristiques optionnelles de l'invention, complémentaires ou de substitution, sont énoncées ci-après:

  • On traite préalablement les fragments solides par un promoteur d'adhérence.
  • Le promoteur d'adhérence contient au moins un agent tensio-actif.
  • Le rapport pondéral de l'agent tensio-actif à l'enrobé est compris entre 0,05 et 1 %, préférentiellement entre 0,1 et 0,5 %.
  • Le promoteur d'adhérence contient au moins un fluxant.
  • Le rapport pondéral du fluxant à l'enrobé est compris entre 0,05 et 2 %, préférentiellement entre 0,1 et 1 %.
  • La proportion pondérale de l'agent tensio-actif dans le promoteur d'adhérence est comprise entre 10 et 80 %, préférentiellement entre 40 et 70 %.
  • Le traitement préalablement des fragments solides est effectué au moyen d'une émulsion dont la teneur pondérale en promoteur d'adhérence est comprise entre 10 et 80 %, préférentiellement entre 40 et 70 %.
  • Lesdits fragments solides sont choisis parmi des granulats, des fraisats, des agrégats d'enrobés, des recyclats de démolition de béton, des mâchefers, des scories et des laitiers.
  • Le liant bitumineux contient au moins un fluxant.
  • La teneur pondérale en fluxant du liant est au moins égale à 0,1 %, préférentiellement au moins égale à 1 %.
  • La teneur pondérale en fluxant du liant est au plus égale à 50 %, préférentiellement au plus égale à 30 %.
  • On chauffe le liant à une température inférieure à son point éclair et comprise entre 80 et 200 °C.
Optional, complementary or alternative characteristics of the invention are set out below:
  • The solid fragments are treated beforehand with an adhesion promoter.
  • The adhesion promoter contains at least one surfactant.
  • The weight ratio of the surfactant to the mix is between 0.05 and 1%, preferably between 0.1 and 0.5%.
  • The adhesion promoter contains at least one fluxing agent.
  • The weight ratio of the fluxing agent to the mix is between 0.05 and 2%, preferably between 0.1 and 1%.
  • The weight proportion of the surfactant in the adhesion promoter is between 10 and 80%, preferably between 40 and 70%.
  • The pretreatment of the solid fragments is carried out using an emulsion the content of which by weight of adhesion promoter is between 10 and 80%, preferably between 40 and 70%.
  • Said solid fragments are chosen from aggregates, millings, asphalt aggregates, concrete demolition recyclates, bottom ash, slag and slag.
  • The bituminous binder contains at least one fluxing agent.
  • The content by weight of fluxing of the binder is at least equal to 0.1%, preferably at least equal to 1%.
  • The content by weight of fluxing of the binder is at most equal to 50%, preferably at most equal to 30%.
  • The binder is heated to a temperature below its flash point and between 80 and 200 ° C.

Des exemples non limitatifs de mise en oeuvre de l'invention sont décrits ci-après, les pourcentages mentionnés étant en poids.Nonlimiting examples of implementation of the invention are described below, the percentages mentioned being in weight.

Exemple 1Example 1

On utilise la formule suivante de granulats silico-calcaires: granulométrie 4/6 75 % granulométrie 2/4 25 %. The following formula of silica-limestone aggregates is used: particle size 4/6 75% particle size 2/4 25%.

Un lot de ces granulats est traité à température ambiante, sans chauffage ni séchage, par une émulsion ayant la composition suivante: H2O 50 % Oléoflux 18 30 % Émulsamine L 60 20 %. A batch of these aggregates is treated at room temperature, without heating or drying, with an emulsion having the following composition: H 2 O 50% Oleoflux 18 30 % Emulsamine L 60 20%.

Oléoflux 18 et Émulsamine L 60 sont respectivement un ester méthylique de tournesol (obtenu par transestérification de l'huile de tournesol) commercialisé par la Société OLÉOROUTE et une diamine commercialisée par la Société CECA, et constituent ensemble le promoteur d'adhérence, Émulsamine L 60 jouant en outre le rôle d'émulsifiant. Oleoflux 18 and Emulsamine L 60 are respectively an ester sunflower methyl (obtained by transesterification of sunflower oil) sold by the OLÉOROUTE Company and a diamine marketed by CECA, and constitute together the adhesion promoter, Emulsamine L 60 also playing the role of emulsifier.

Le lot ainsi traité et un lot non traité sont enrobés avec 5,8 % d'un mélange de bitume et d'ester méthylique de tournesol en tant que fluxant, ce dernier constituant 18 % du mélange. La température du liant à l'enrobage est de 160 °C. Sans le promoteur d'adhérence, l'enrobage n'est pas satisfaisant. L'usage du promoteur à une teneur d'environ 0,5 % dans l'enrobé permet un bien meilleur enrobage, les éventuels points non enrobés le devenant rapidement par contact. La stabilité du produit a été vérifiée sur un mois par un essai empirique consistant à séparer les granulats au moyen d'une spatule plongée dans l'enrobé, après 2 à 3 minutes de brassage.The batch thus treated and one batch not treated are coated with 5.8% of a mixture of bitumen and methyl ester sunflower as a flux, the latter constituting 18% of the mixed. The temperature of the binder for coating is 160 ° C. Without the adhesion promoter, the coating is not satisfactory. The use of the promoter at a content of approximately 0.5% in the coating allows a much better coating, the possible uncoated dots quickly becoming so by contact. The product stability has been verified over a month by a test empirical process of separating aggregates using a spatula immersed in the mix, after 2 to 3 minutes of brewing.

Exemple 2Example 2

On utilise la formule continue suivante de granulats de type quartzite: granulométrie 4/6 45 % granulométrie 0/4 25 % granulométrie 0/5 roulé 30 %. The following continuous formula of quartzite type aggregates is used: particle size 4/6 45% grain size 0/4 25% grain size 0/5 rolled 30 %.

Ces granulats sont enrobés par le même liant que dans l'exemple 1, à la même température, après traitement par un promoteur d'adhésion composé de 60 % d'Oléoflux 18 et de 40 % de Cecabase 240 PF (amine grasse commercialisée par la Société CECA), utilisé au taux de 0,5 % par rapport à l'enrobé, soit seul, soit sous forme d'une émulsion aqueuse à 50 % obtenue par simple agitation manuelle.These aggregates are coated with the same binder as in Example 1, at the same temperature, after treatment with a adhesion promoter composed of 60% Oléoflux 18 and 40% Cecabase 240 PF (fatty amine marketed by the CECA company), used at a rate of 0.5% compared to the asphalt mix, either alone or in the form of a 50% aqueous emulsion obtained by simple manual stirring.

On obtient dans les deux cas une bonne qualité d'enrobage, sans constater aucune différence, et ce même après immersion 16 heures dans l'eau à 60 °C.In both cases, a good coating quality is obtained, without seeing any difference, even after immersion 16 hours in water at 60 ° C.

Afin d'évaluer la facilité de mise en oeuvre, des essais de maniabilité ont été effectués, consistant à mesurer la force maximale nécessaire pour déplacer de 13 cm une plaque métallique de 92 cm2 dans 4 kg d'enrobé. Les résultats sont les suivants: Promoteur d'adhésion Seul En émulsion Maniabilité à 20 °C 47 N 50 N Maniabilité à 5 °C 120 N 118 N In order to assess the ease of implementation, maneuverability tests were carried out, consisting in measuring the maximum force necessary to move a 92 cm 2 metal plate by 13 cm in 4 kg of asphalt. The results are as follows: Membership Promoter Alone In emulsion Handling at 20 ° C 47 N 50 N Handling at 5 ° C 120 N 118 N

Ici encore, les deux produits ont le même comportement. Leur stabilité après 2 mois est bonne.Here again, the two products have the same behavior. Their stability after 2 months is good.

Bien que les enrobés préparés dans les exemples ci-dessus conviennent particulièrement en tant qu'enrobés stockables, l'invention n'est pas limitée à de tels enrobés. Elle est applicable tout aussi avantageusement pour la réalisation d'enrobés destinés à des travaux de construction et d'entretien de routes.Although the mixes prepared in the above examples particularly suitable as storable mixes, the invention is not limited to such coated materials. She is equally applicable for the realization of asphalt intended for construction and maintenance work of roads.

Claims (12)

Procédé pour préparer un enrobé bitumineux pour application routière dans lequel on fluidifie par chauffage un liant bitumineux solide à température ambiante et on le mélange à des fragments solides de manière à enrober ceux-ci de bitume, caractérisé en ce que lesdits fragments solides sont à température ambiante lors de leur mise en contact avec le liant, et que le liant bitumineux contient au moins un fluxant.Process for preparing a bituminous mix for road application in which a solid bituminous binder is fluidized by heating at room temperature and it is mixed with solid fragments so as to coat them with bitumen, characterized in that said solid fragments are at temperature ambient when brought into contact with the binder, and that the bituminous binder contains at least one fluxing agent. Procédé selon la revendication 1, dans lequel on traite préalablement les fragments solides par un promoteur d'adhérence.The method of claim 1, wherein the solid fragments beforehand by an adhesion promoter. Procédé selon la revendication 2, dans lequel le promoteur d'adhérence contient au moins un agent tensio-actif.The method of claim 2, wherein the promoter of adhesion contains at least one surfactant. Procédé selon la revendication 3, dans lequel le rapport pondéral de l'agent tensio-actif à l'enrobé est compris entre 0,05 et 1 %, préférentiellement entre 0,1 et 0,5 %.The method of claim 3, wherein the ratio weight of the surfactant to the asphalt is between 0.05 and 1%, preferably between 0.1 and 0.5%. Procédé selon l'une des revendications 2 à 4, dans lequel le promoteur d'adhérence contient au moins un fluxant.Method according to one of claims 2 to 4, in which the adhesion promoter contains at least one fluxing agent. Procédé selon la revendication 5, dans lequel le rapport pondéral du fluxant contenu dans le promoteur d'adhérence à l'enrobé est compris entre 0,05 et 2 %, préférentiellement entre 0,1 et 1 %.The method of claim 5, wherein the ratio by weight of the fluxing agent contained in the adhesion promoter the mix is between 0.05 and 2%, preferably between 0.1 and 1%. Procédé selon l'une des revendications 5 et 6, dans lequel la proportion pondérale de l'agent tensio-actif dans le promoteur d'adhérence est comprise entre 10 et 80 %, préférentiellement entre 40 et 70 %.Method according to one of claims 5 and 6, in which the weight proportion of the surfactant in the adhesion promoter is between 10 and 80%, preferably between 40 and 70%. Procédé selon l'une des revendications 2 à 7, dans lequel le traitement préalablement des fragments solides est effectué au moyen d'une émulsion dont la teneur pondérale en promoteur d'adhérence est comprise entre 10 et 80 %, préférentiellement entre 40 et 70 %.Method according to one of claims 2 to 7, in which the pre-treatment of solid fragments is made by means of an emulsion whose content by weight of adhesion promoter is between 10 and 80%, preferably between 40 and 70%. Procédé selon l'une des revendications précédentes, dans lequel lesdits fragments solides sont choisis parmi des granulats, des fraisats, des agrégats d'enrobés, des recyclats de démolition de béton, des mâchefers, des scories et des laitiers.Method according to one of the preceding claims, in which said solid fragments are chosen from aggregates, millings, asphalt aggregates, recyclates for demolition of concrete, bottom ash, slag and dairy farmers. Procédé selon l'une des revendications précédentes, dans lequel la teneur pondérale en fluxant du liant est au moins égale à 0,1 %, préférentiellement au moins égale à 1 %.Method according to one of the preceding claims, in which the content by weight of fluxing of the binder is at least equal to 0.1%, preferably at least equal to 1%. Procédé selon l'une des revendications précédentes, dans lequel la teneur pondérale en fluxant du liant est au plus égale à 50 %, préférentiellement au plus égale à 30 %.Method according to one of the preceding claims, in which the content by weight of fluxing of the binder is at most equal to 50%, preferably at most equal to 30%. Procédé selon l'une des revendications précédentes, dans lequel on chauffe le liant à une température inférieure à son point éclair et comprise entre 80 et 200 °C.Method according to one of the preceding claims, in which the binder is heated to a temperature below its flash point and between 80 and 200 ° C.
EP02293205A 2001-12-27 2002-12-20 Process for preparing a bituminous aggregate for roads Withdrawn EP1323867A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0116943 2001-12-27
FR0116943A FR2834305B1 (en) 2001-12-27 2001-12-27 PROCESS FOR PREPARING A BITUMINOUS ROAD COATING

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EP1323867A1 true EP1323867A1 (en) 2003-07-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7732511B2 (en) 2005-04-05 2010-06-08 Ceca S.A. Bituminous products, the mixture thereof with aggregates and the use thereof
US7951858B2 (en) 2006-06-06 2011-05-31 Ceca S,A, Bituminous products and aqueous emulsions based on bituminous products and uses thereof
US8382890B2 (en) 2007-04-26 2013-02-26 Ceca S.A. Method for preparing coated materials based on bituminous products and uses thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB604149A (en) * 1942-09-29 1948-06-29 Thomas Swan & Company Ltd Aggregate treating composition
DE2062358A1 (en) * 1970-12-18 1972-06-29 Tunkl, Franz, Dr., 6900 Heidelberg Method and device for the production of road surfacing materials
US3783000A (en) * 1970-06-11 1974-01-01 Mitsuboshi Ind Method for preparing water-proof asphalt materials
FR2678653A1 (en) * 1991-07-01 1993-01-08 Gerland Mixes based on aggregates and thermally meltable binders for roadway surfacing, method of manufacture and use of this mix
EP0524031A1 (en) * 1991-07-19 1993-01-20 Colas S.A. Method for making bitumen coated dense products
EP0971072A1 (en) * 1998-07-10 2000-01-12 ÖSTERREICHISCHE VIALIT GESELLSCHAFT mbH Method for making asphalt coverings

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB604149A (en) * 1942-09-29 1948-06-29 Thomas Swan & Company Ltd Aggregate treating composition
US3783000A (en) * 1970-06-11 1974-01-01 Mitsuboshi Ind Method for preparing water-proof asphalt materials
DE2062358A1 (en) * 1970-12-18 1972-06-29 Tunkl, Franz, Dr., 6900 Heidelberg Method and device for the production of road surfacing materials
FR2678653A1 (en) * 1991-07-01 1993-01-08 Gerland Mixes based on aggregates and thermally meltable binders for roadway surfacing, method of manufacture and use of this mix
EP0524031A1 (en) * 1991-07-19 1993-01-20 Colas S.A. Method for making bitumen coated dense products
EP0971072A1 (en) * 1998-07-10 2000-01-12 ÖSTERREICHISCHE VIALIT GESELLSCHAFT mbH Method for making asphalt coverings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7732511B2 (en) 2005-04-05 2010-06-08 Ceca S.A. Bituminous products, the mixture thereof with aggregates and the use thereof
US7951858B2 (en) 2006-06-06 2011-05-31 Ceca S,A, Bituminous products and aqueous emulsions based on bituminous products and uses thereof
US8382890B2 (en) 2007-04-26 2013-02-26 Ceca S.A. Method for preparing coated materials based on bituminous products and uses thereof

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FR2834305A1 (en) 2003-07-04
FR2834305B1 (en) 2004-08-27

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