WO2003016235A2

WO2003016235A2 - Coating material with exposed, coloured, hard fillers and the production method thereof

Info

Publication number: WO2003016235A2
Application number: PCT/FR2002/002882
Authority: WO
Inventors: Claude Destenay
Original assignee: Claude Destenay
Priority date: 2001-08-14
Filing date: 2002-08-14
Publication date: 2003-02-27
Also published as: FR2828684A1; WO2003016235A3; EP1419122A2; FR2828684B1; AU2002337269A1

Abstract

The invention relates to a method of producing a material that is used to coat the pavement or other surfaces or areas of ground. The inventive method is characterised in that it comprises the following steps: a coloured mixture is prepared by the fusion of a basic component and colour pigments; and subsequently said coloured mixture is made to form a coloured aggregate in the mass having properties, particularly in terms of hardness, that are comparable to the properties of standard natural aggregates. The coloured, manufactured, hard fillers thus obtained in the mass are agglomerated with a hydrocarbon binder, a resin binder or a hydraulic binder, using a known method, in order to produce said coating.

Description

Coating material with colored apparent hard charges, and process for its production.

The present invention relates to a coating material with visible hard colored charges, such as, for example, bituminous coated, resinous coated, concrete with aggregate, etc., usable in public works and building in pavement, floor coverings, of facades or other building elements, etc. It also relates to the process for manufacturing this coating material.

Currently, colored coatings are commonly used, for example to improve road signs, to beautify the living environment, to differentiate reserved areas, tracks or lanes, for the enhancement of works, equipment or premises, etc.

To carry out such arrangements, a person skilled in the art traditionally implements, for example, paving, paving and fitting of natural stones, as well as coverings composed of natural hard fillers (gravel, gravel, sand, fine, chips). stone, ...) or industrial, and a generally hydraulic agglomeration binder (concrete with visible aggregates), or hydrocarbon (bituminous mixes), or made of a resin (resinous mixes). The color of these coatings results either from the choice of the original colors of the aggregates and / or the binder, or from the choice of colors which it is possible to give to them by various dyeing processes.

For example, the natural or industrial aggregates can be surface-colored by the binder which agglomerates them or else, they can be colored beforehand, industrially and surface-wise, by a coating of various dyestuffs. This film coating is, for example, constituted in the second case, by a resin which can be freely colored with pigments which give gravel agglomerated in resinous mixes, the extreme diversity of colors which clearly distinguishes this type of coatings more commonly applied to floors. of buildings. The aggregates thus colored individually by a coating of pigmented resin, are agglomerated by means of transparent or even colorless binders (epoxy resins, polyurethanes, methacrylates, ...) which, by transparency, highlight the coating color or colors of said aggregates.

In the case where the coloring of the coating is due to the binders, the originally opaque hydraulic binders, the originally transparent or colorless resinous binders, the originally opaque or translucent bituminous binders (so-called "clear" bitumens), are colored by pigments or fine charges. These colored binders also stain the natural or industrial aggregates which they agglomerate, and thus give their coatings their color.

When opaque binders are not intended to give their only color to aggregates and therefore to coatings, implementation methods (for hydraulic binders) or finishes (such as shot peening for black or pigmented bitumens) allow control their elimination on the surface of the coatings, until more or less clearly highlight the colors of the aggregates on a black or colored binder background.

The hard fillers, binders and processes mentioned above only make it possible to obtain coatings:

with little diversified but almost unalterable colors of natural fillers (gravel, gravel, etc.);

- diversified (but superficial) colors of pigmented binders or coatings, colors recognized as being unstable, sensitive to UV rays, bad weather, wear and tear from pedestrian or road traffic, cleaning products, premature aging.

Indeed, it has been proven that:

- if the natural hard charges offer, in their mass, almost unalterable colors, their diversity is very limited since for the mineralogists, the stone deposits exploitable in aggregates, present only five classes of differentiated colors, and not all have "color"value; If hard industrial fillers can sometimes replace natural fillers, their colors are rarely of aesthetic interest: these fillers are most often the product of the recycling of materials that it is necessary to sort and that do not or do not generally give than a shade and its nuances. And, like their material, their color almost never has the properties of a good base for controlled, diversified and quality colorings;

- if hard, natural and industrial fillers can be colored by different agglomeration binders or coating processes, and various dyeing materials, the surface colorings obtained do not durably withstand the often severe constraints of pedestrian or road sites, namely:

UV, bad weather, the action of products and / or maintenance processes and materials which gradually alter, denature and degrade the colors of said coatings;

- abrasion, puncturing, wear due to road or pedestrian traffic which deteriorate and gradually eliminate the colors of the coatings, until the original color of the aggregates appears (wear, surface elimination, of the colored agglomeration binder and, if necessary, pigmented coating film for the aggregates).

These drawbacks, hitherto deemed to be inevitable, limit the use of coatings with visible hard charges and superficially colored to sites with low constraints, or to accept the gradual degradation and elimination of their colors as the risks which may result therefrom, or to assume the disadvantages and additional costs of frequent renovations.

If the agglomeration binders are commonly colored:

- the colors of hydraulic binders are deemed to be limited (to the point that concretes are often used as supports and joints for generally natural and therefore slightly colored fillers which they are asked to fix); - the colors of the coating resins and the generally colorless agglomeration resins (including those reputed to be as resistant as granite) are, depending on the types, more or less sensitive to UV, yellowing, chalking, weathering, and / or sensitive to abrasion, puncture, wear, maintenance products and processes;

- the colors of the pigmented bitumens are generally little appreciated by prescribers, reputed to be arbitrary, insufficiently varied, they impose monochrome coatings (mottled excluded) and they are more or less sensitive to UV, marking, fouling, difficult to maintain, they are also sensitive to wear and tear (the colored bitumen film, in contact with traffic, is also gradually deteriorated and eliminated) until, again, the original color of the aggregates is highlighted; in addition, the pigmentation of the bitumen also generates the major drawback of coloring all the tools or machines for production, transport, application; the pigmented bitumens being moreover incompatible with each other, they pollute each other irreparably, which requires (to pass from one color to another), costly cleaning or to specialize tools and machines according to the colors and therefore to multiply production and application lines, which translates into heavy investments; these drawbacks have the inevitable consequences of limiting the choice of colors of the coatings, and of increasing the costs thereof, without benefit for the quality of the coatings or for that of their colors.

The current materials (hard fillers and binders) and processes mentioned above do not, therefore, make it possible to produce color coatings that meet changing needs, in particular in terms of road safety, which nevertheless requires, among other things, diversity, quality and the durability of the colors.

For example, although a ministerial directive imposes a green color to distinguish cycle paths, no aggregate allows it to be obtained and no coating or colored binder guarantees a coating keeping its green color for more than 12 to 36 months, depending on traffic and / or climate.

On the other hand, although optimization of road safety is essential, most of the specific improvements it involves are carried out, by default, with in particular paints, resins and colored coatings, yet deemed dangerous in that '' they generate risks of slipperiness for pedestrians, break in grip for vehicles, illegibility (due to their sensitivity to fouling, wear, erasure), without taking into account the constraints and costs of frequent renovations required.

All these observations lead us to remember that, whatever the current methods of coloring traditional charges and binders, the operating constraints of most road and pedestrian sites, including those of building floors and even facades (UV, bad weather, maintenance, ...);

alter, deteriorate, gradually eliminate surface colors from coatings and;

cause, in the short or medium term, the reappearance of the original color of the charges such as that, dominant and definitive, of the coatings exposed to traffic;

- force us to conclude that only the mass and stable coloring of hard fillers can guarantee the durability of the colors of the coatings.

In document EP 0 911 304, a coating for traffic lanes, in particular roads, cycle paths, sidewalks and pedestrian paths, car parks or parking spaces, of the bituminous binder, hydraulic or polymer type, having reinforced reflective properties, is described, characterized in that it comprises 10 to 80% by weight of glass debris which contain at least 10% by weight of essentially reflective glass debris having at least one metallized or enamelled surface or containing metallic inclusions, of dimension less than 20 mm. This coating makes it possible to confer on the surface layers of traffic lanes and other related elements of roads, reflective properties capable of drawing the attention of users to certain arrangements, by improving the reflection of light, for example that emitted by headlights. vehicles or urban lighting. It does not allow the production of various colored coatings, the colors of which can be chosen from a wide range of colors made available to designers, promoters, producers and public authorities.

Document JP 11,181,707 A describes a paving material for floors, consisting of an aggregate of colored glass obtained by grinding recycled tile waste until the particles have a size of 0 to 5 mm, these particles then being mixed with a urethane group resin at a rate of 100 to 5 to 10 part by weight, respectively. The aim is to obtain a reduction in the cost of laying road surfaces, the paving material obtained by recycling waste being available at low cost. This material does not solve the problem posed by the production of colored pavements or other surfaces produced on demand with colors chosen from a wide range of colors.

In document FR-2,661,362A, a composite material based on broken glass and hydraulic or resinous binder is described which can be used for internal or external decoration of construction or for the manufacture of window boxes, planters, garden tables, etc. nature and limitation of the applications of this material allow to deduce that applied to the coating of pavements and other frequented floors, this material would have many disadvantages.

In document EP 0.665.194, a construction material obtained by mixing glass particles with cement and with a cationic bitumen emulsion is described, such a material being used solely and exclusively to form a foundation and load-bearing layer. pavement. In document WO-89.11457, an artificial stone is described, consisting of crushed glass or used glass, or even consisting of crushed used glass, mixed in particular proportions with resins, to obtain a decoration material which, according to this document, closely resembles with natural stones.

The prior documents neither disclose nor suggest a process making it possible to obtain a coating material with apparent hard charges which is colored in the mass, with a great diversity and quality of colors, in a stable and lasting manner, in particular despite the wear caused by road and pedestrian traffic.

The object of the present invention is in particular to remedy the abovementioned drawbacks or inadequacies of current colored coatings and their methods of obtaining.

It aims in particular to obtain colored coatings for public works and buildings, for example coated materials of all colors, including mottled.

According to the invention, this objective is achieved by a remarkable process in that a colored mixture obtained by melting a basic inorganic component and coloring pigments suitable for the desired coating color is prepared, this colored mixture being then shaped, so as to constitute an aggregate (fine, sand, "gravel") tinted in the mass having qualities, in particular qualities of hardness, comparable to the qualities of conventional natural aggregates, the hard fillers tinted in the mass thus obtained being agglomerated by means of a hydrocarbon binder, or a resinous binder, or a hydraulic binder, by any suitable method known per se, for obtaining the coating having the desired color.

According to another characteristic arrangement of the process of the invention, the colored mixture is obtained by fusion of silicates and coloring pigments, in which various adjuvants or additions can be incorporated, this colored mixture then being formed, using any material. and / or appropriate methods, so as to constitute a granulate of tinted glass in the mass, which is finally agglomerated by means of a hydrocarbon binder, or a resinous binder, or a hydraulic binder, to obtain the coating having the chosen color.

According to another characteristic arrangement of the invention, recycling glass, preferably transparent recycling glass, is incorporated into the mixture of silicates and coloring pigments prepared for the production of bulk tinted glass granulate.

According to another characteristic arrangement of the process of the invention, this fusion product is shaped, after hardening, for example by crushing and / or grinding, the glass granulate or other hard manufactured material, dyed in the mass, as well obtained being, for example, then rolled or blunt.

According to another characteristic arrangement of the invention, the product of the fusion is shaped by molding or machined into tinted aggregate in the mass and with controlled shapes.

The coating material according to the invention is remarkable in that it results from the implementation of one or more of the above characteristic arrangements.

This coating material consists of hard, manufactured fillers, which can be colored in the mass at will, and which can be agglomerated by means of binders known per se, these hard fillers being advantageously constituted by a granulate of glass colored in the mass and agglomerated by means of '' a transparent or translucent, even opaque binder.

The manufacturing process for this colored coating consists in mixing, by a kneading action, the hard fillers tinted in the mass and a binder, preferably colorless, transparent or translucent, so as to obtain a monochrome coating or with mottled colors applicable, on the surface to be coated, according to traditional methods and means. The processes for obtaining these colored coatings are mastered, proven, well known, in that they require the same processes and the same equipment as those currently used for the manufacture of bituminous mixes and resinous mixes, under identical conditions. The current methods of manufacturing resinous coated materials and traditional bituminous coated materials, black for example, can be directly transposed to that of colored coatings according to the invention.

According to the invention, the manufactured hard fillers can advantageously consist of mass-colored glass, which can be (depending on the compositions) opaque and of stony appearance or more or less translucent. This aggregate of tinted glass in the mass can be constituted by crushed and / or ground glass, or even rolled (blunt), or by glass machined into aggregates with controlled shapes.

Thanks to their hardness and resistance to abrasion, scratches, wear, punctures, loads (heavy vehicles for example), these manufactured loads have properties comparable to those of natural hard loads (gravel, gravel , sands, fines) traditionally used for the production of pedestrian and road surfaces, in particular.

Thanks to their faculties of adhesion, of adhesiveness, these manufactured charges colored in the mass can be fixed, joined, agglomerated as and as well as natural hard charges with, for example:

hydrocarbon binders, particularly clear bitumens (but also, black or colored opaque bitumens);

- resinous binders (for example polymeric binders (polymer matrices with organomineral macromolecular skeleton, thermosets, thermoplastic elastomers) colorless, transparent or incidentally pigmented.

- hydraulic binders, tinted or not, for example to obtain concrete with visible aggregates. Thanks to the hardness, the resistance and the adhesiveness, adhesiveness of the fillers manufactured according to the invention and to their production in all usual particle sizes (in particular), the coatings obtained have performances comparable to those of coatings with fillers. hard natural fixed, joined, agglomerated with the same binders or fixers according to the same methods and materials, including in the case for example:

- different types of thin, very thin, ultra-thin, common or special bituminous mixes;

- vertical or similar surface coatings, in particular those obtained by spraying sand and / or fines onto, for example, resins and tars;

prefabricated coatings made with certain fixers or binders (paving, facade panels, for example).

Thanks to the possibility of obtaining, in all sizes, manufactured charges colored in the mass, either rough crushing and / or grinding (random shapes); or the same "rolled" loads (blunt, worn between them) to, for example, reduce in a controlled manner the roughness of certain coatings, all current requirements in terms of coatings, current or special can be satisfied. On the other hand, colored fillers in the mass can also be obtained in controlled, predetermined, regular or irregular shapes, for example by bringing the glass to the state of a sheet more or less thick than a cylinder for example, marks , etching continuously millions of imprints to the desired shapes so that after cooling and a shock or a fall the whole disintegrates according to the contours of the imprints thus producing as many charges likely to allow the manufacture of coatings responding to specific technical and / or aesthetic requirements.

Thanks to the extreme diversity of colorations in the mass which it is possible to obtain according to the invention, throughout the range of the spectrum, the manufactured hard fillers allow, unlike traditional fillers, coatings in quantity of solid mass colors and in countless colors plain, mottled, tone on tone, or multicolored, obtained by the simple mixture of colors united in all the desired proportions.

Thanks to the coloring in the mass and to its proven stability, the coatings produced have their colors insensitive to UV, weathering, cleaning products in particular.

Thanks to the coloring in the mass and to the hardness and resistance properties of the fillers manufactured according to the invention, the durability of the colors of the coatings is guaranteed even in the event of wear of the binder or accidental deterioration of their own material.

The resinous mixes obtained offer finishes and variants which radically prohibit resinous mixes traditionally made up of aggregates which are surface-colored with a coating of pigmented resin. In fact, the apparent surface of the coatings or resinous mixes obtained according to the invention can, according to an interesting development thereof, be brushed (mat), sanded, polished, by means of methods and materials known per se, without any unfortunate consequences. for their colors and with additional advantages:

removing agglomerating resin (and its gloss, which is often not appreciated) more or less sensitive, depending on the type, to UV, yellowing, chalking, cleaning products and processes, and aggressions traffic, premature aging;

- to reduce or eliminate by sanding, the roughness, the reliefs produced by agglomerated aggregates and which promote fouling and which complicate maintenance while resinous mixes are generally used in the building.

The colored bituminous mixes according to the invention can be obtained with more or less opaque bitumens, even black for example, which can be removed on the surface of the coatings by shot peening, for example, to highlight the color or colors of the fillers on a background (or seals) of black, or even, if necessary, colored binder. In addition, the more the traffic will use or will eliminate more or less translucent or opaque bitumen on the surface, the more the colors of the apparent charges will be highlighted, while the same constraints deteriorate the colors of the mixes traditionally colored. In addition, the clear bitumens which are logically the preferred binders for obtaining, according to the invention, bituminous mixes with the colors (including mottled) of the aggregates, are less costly than the pigmented clear bitumens currently used although the colors (always monochrome) of these are deemed to have the following disadvantages:

- to be too limited in quality and in number, sensitive to UV, fouling, erasure;

to be incompatible with each other to the point of requiring systematic, complete, careful cleaning of all production, transport and application equipment, which implies their immobilization and which increases the cost of pigmented bituminous mixes.

It is also remarkable that the properties of the colored hard fillers manufactured according to the invention and the properties of the clear bitumens allow the conditioning of mixes of all colors and of different types (of different particle size compositions) in the form, for example, of bags, cans or "breads", the latter being for example molded in cylinders or in parallelepipeds with preferably a sleeve in their center to promote their rigidity and facilitate their handling. It is enough to coarsely fractionate (with a pickaxe for example) the solidified asphalt and to bring it (in a tank or a can for example) to a temperature close to that of the manufacture of the binder (generally from 40 ° to 60 ° C. ) to obtain - without any alteration in the qualities - "ready-to-use" mix, in all colors, including mottled, the latter being obtained by mixing in the desired proportions coated mixes of different colors.

In addition to their advantages in terms of transport, storage, permanent availability, these packaging for, for example, 30 to 60 kg per unit (either one or two M ² of coating depending on the thickness) make it possible to remedy the incapacity of bitumen power plants to produce at least less than 2 tonnes of asphalt (discontinuous) or 10 tonnes (continuous), which results in the difficulty for companies to treat punctually, with colored bituminous mixes, small or micro surfaces (signaling, pedestrian crossings, speed bumps, reserved spaces , "boats", directional islands ...), and what explains their treatment (always at risk) with paints, resins, coatings and other expensive pavings for example.

The color coatings obtained according to the invention also provide the following advantages:

aesthetically:

• mass colors of high quality and diversity;

• great mastery of color, making it possible to obtain color contrasts and harmonies down to the nuance;

• new decorative and signage faculties including the execution of free and fine patterns.

- in terms of security:

• these coatings have unalterable, indelible colors, always visible, and can therefore be advantageously used for signaling, marking;

• these colored coatings when used in coatings for pedestrian, road and bicycle sites have non-slip, roughness and grip characteristics, comparable to those of traditional common black asphalt, reinforced, draining, which notably avoids the risks slippage and break in grip when they are used for ad hoc installations, for example safety (signaling, pedestrian crossings, retarders; ...)

- economically, these coatings for public works and buildings: • meet the changing requirements for quality, diversity and durability of colors;

• are of a quality / durability / price ratio, significantly more advantageous than the traditional colored, resinous and bituminous mixes;

• are recyclable at low cost (elimination of the binder)

• make it possible to recycle used glass, preferably transparent or translucent, incorporated into the mixture of silicates and colored pigments, during the production of glass aggregates tinted in the mass.

The processes for obtaining and using coatings according to the invention have the important advantages of being identical or similar to those currently used in practice, so that the manufacture and application of these new coatings colored in the mass, do not require either a change of habits, or upgrading of the knowledge of technicians or operating personnel, or studies or special precautions for organization or implementation, or investments for adaptation or the acquisition of special materials or equipment, or the risk of consequent handling errors, or additional maintenance costs.

Other aims, characteristics and advantages will emerge further from the rest of this presentation.

The coating material according to the invention consists of hard, manufactured fillers, colored in the mass, at will, and an agglomeration binder, preferably colorless, or transparent, or translucent.

The hard fillers are advantageously made up of glass colored in the mass, opaque and of stony or more or less translucent appearance, specially manufactured for the implementation of the invention, then crushed and / or ground in variable particle sizes, for example from 0 to 14 mm.

On the other hand, the transparent or translucent binder used for the agglomeration of the colored glass granulate can be a hydrocarbon binder (for example constituted by a clear bitumen), or a resinous binder, preferably a binder polymer, for example consisting of an epoxy resin, or methacrylate, or polyester, or polyamide, or a hydraulic binder.

The following describes, by way of example, the production of hard fillers ("gravel", sand and fine) manufactured, obtained by the crushing and / or grinding of colored glass in the mass specially prepared for placing work of the invention.

According to this process, the hard fillers are obtained by fusing different compositions of silicates and adjuvants with metal oxides which tint the molten materials, in a homogeneous and stable manner, even after brutal cooling which produces a particularly hard solidified body which may be opaque and stony in appearance or more or less translucent according to the compositions and that easily controllable crushing and / or grinding makes it possible to reduce the desired particle sizes.

The metallic oxides or pigments mixed with the silicates react in a conventional manner, namely that, according to their dosage, they make it possible to obtain ranges of green (due to chromium), blue (due to cobalt), yellow (due to urane), purple (due to manganese), red and pink (due to copper) ... Although more expensive, coloring frits (glassy concentrates) may be preferred: they facilitate color control and - by their combinations - the multiplication of tones and shades. These processes make it possible to obtain, throughout the spectrum, a quantity of stable, long-lasting colors. However, many factors (nature, quality, proportions of the raw materials; melting temperature and duration, type of oven, volume treated, etc.) influence the final colorings in particular, so that it is essential to carry out preliminary tests and rigorous in controlling colors at each production site.

Luminescent or phosphorescent substances can also be incorporated into the colored hard fillers, during the manufacture of these.

Excellent results in the manufacture of hard fillers according to the invention have been obtained by following, for example, by way of nonlimiting indication, the process below. In a crucible glass furnace;

- a mixture of 100 kg consisting of 69 kg of silica, 23 kg of calcium fluoride, 8 kg of zinc oxide to which is added:

• to obtain the color "medium sky blue": 20 gr of colbalt oxide or;

• to obtain a turquoise green: 340 gr of copper oxide, 34 gr of chromium oxide, 170 gr of charcoal or;

• to obtain a smoky rose: 30 gr of nickel, 300 gr of manganese;

- is brought and maintained at a melting temperature of the order of 1500 ° C for seven hours;

- Then is brutally cooled by the regular, measured spillage of the pouring into water at a temperature of the order of 60 ° C, for example;

and, finally crushed and / or cold ground (for example by a hammer mill), which makes it possible to obtain hard loads (classes B / D standard NF P 18-101) in configurations and, after selection by screening , in grain sizes (from 0 to 14 mm) which allow their use as is (or "rolled", blunt for specific applications) just like the gravel, sand and fine used until then.

Measurements of density, coefficient of flattening, dynamic fragmentation, tests of resistance to abrasion, to wear, to scratches, to puncture, to adhesiveness to binders, to UV resistance, demonstrate (in particular ):

- that the colors obtained at will and throughout the spectrum range guarantee their durability (even after extreme exposure to UV, or after brushing, sanding; polishing or fragmentation); - that the multicolored fillers give the coatings performances comparable to those of the coatings produced with the same binders and traditional fillers, of the same particle size;

that the making of the coatings does not require any modification of the usual 5 materials and execution process: the proven coatings have been produced in compliance with the methods, prescriptions and standards which refer to the skilled person.

In fact, the colored coatings according to the invention are obtained by mixing, in conventional proportions (that is to say identical or comparable to those of previous bituminous coatings, for example) of hard fillers manufactured in the above manner indicated and a traditional binder, preferably chosen from clear bitumens, or resins of the epoxy or methacrylate, polyester, silicone, elastomer, polyamide, polyolefin, acrylic, methacrylic, polyethylene type.

15 Thus, the colored bituminous mixes according to the invention can be obtained according to the following traditional process: in a coating plant, the heat-insulated bitumen at 80/100 ° C is pumped to the mixing drum where the manufactured loads (heated by a flame) and the clear bitumen are brought to a temperature of about 160 ° C and kneaded, intimately mixed, the bitumen

20 generally accounting for 5 to 6% of the weight of the charges. The colored mix obtained (fillers + binder) is then applied "hot" by spreading, leveling and compacting - by a compactor or a steamroller - in the case for example of the preparation of a road surface, which does not require no particular device different from those currently used.

25. The colored mix according to the invention can also be obtained according to another traditional method known as "cold", which consists in kneading hard loads (at room temperature) with an emulsion of clear bitumen at a temperature close to that of its manufacture, for example from 40 ° to 60 ° C, then to proceed to the conventional spreading, leveling, possible compaction.

30 If clear bitumen makes it possible to obtain bituminous mixes directly in the color (s) of mottled aggregates, it also allows when it comes to successively producing asphalt mixes of different colors, radically eliminating the major technical and economic disadvantages imposed by the mutual pollution of the pigmented bitumens currently used to obtain asphalt mixes (monochrome) superficially colored with the binder .

Hydrocarbon binder coatings with bitumen dosages> to

6% and which are used without compaction, for example bituminous mixes called poured or bituminous grouts, are also obtained and applied according to traditional methods and means just like elsewhere, for example coatings with hydraulic binders such as concrete with aggregate aggregates and other coatings including those prefabricated such as, for example, pavements and facade panels with apparent hard loads.

The colored resinous mixes according to the invention are also obtained and applied traditionally, for example according to the following process: with a concrete mixer, or mixer and a tank, the manufactured aggregate is intimately mixed with the resin (which counts, depending on the grain sizes for + or - 8% of the weight of aggregates) and the mortar thus formed is applied manually to the surface to be coated using spatulas and according to a common technique which consists in spreading, tightening, leveling and smoothing the mortar in a predetermined thickness, for example 4, or 6, or 8, or 10 mm), depending on the grain sizes. Devices can also carry out these operations which are carried out at so-called room temperature (approximately 15 ° to 30 ° C). As with current resinous mixes, the mortar "polymerizes" (dries, hardens and solidifies with the support) in a few hours (depending on the resins, thickness, temperature, natural ventilation ...) and unlike resinous mixes current (traditionally obtained with gravel superficially colored by a coating of pigmented resin) it can then be brushed (mat), sanded, polished, which makes it possible to obtain, in different finishes and variants, resinous mixes colored in the mass, for example and depending on the quality of the resins:

• in grain size 1/3 mm by 6 mm thick with 8% epoxy resin; • in grain size 2/4 mm by 8 mm thick with 7% epoxy resin.

It is remarkable that whatever the type of coating, of process, of binder used according to the invention with traditional methods and means internationally known, mastered and proven, it is advantageously obtained coatings in the mass or colors and extremely diversified manufactured hard fillers, which coatings offer, in addition to their specific advantages, performances comparable to those of current or special coatings currently obtained with traditional hard fillers.

In fact, the coatings obtained according to the invention make it possible to radically remedy the deficit in colors of traditional hard fillers and in the lack of resistance and durability of the colors obtained by the current processes for surface coloring of fillers, binders and coatings.

Furthermore, it has been established that economically, the mass-colored coatings obtained according to the invention are of a more advantageous quality / price ratio than the surface-colored coatings currently used in public works and construction.

Claims

1. A method of manufacturing a pavement coating material, or other portions of floors or surfaces, characterized in that a colored mixture is prepared obtained by melting an inorganic base component and coloring pigments, this the colored mixture is then shaped so as to constitute a mass-dyed aggregate having qualities, in particular qualities of hardness, comparable to the qualities of conventional natural aggregates, the hard fillers dyed in the mass thus obtained being agglomerated by means of 'A hydrocarbon binder, or a resinous binder, or a hydraulic binder, by a method known per se, for obtaining said coating.

2. - Method according to claim 1, characterized in that a colored mixture is prepared by melting silicates and coloring pigments, this colored mixture then being shaped so as to constitute a glass aggregate tinted in the mass, which is agglomerated by means of a hydrocarbon binder, or a resinous binder, or a hydraulic binder, to obtain the coating.

3. Method according to claim 2, characterized in that recycling glass is incorporated into the mixture of silicates and coloring pigments.

4. Method according to any one of claims 1 to 3, characterized in that the product of the fusion is shaped, after hardening, for example by crushing and / or grinding, the aggregate tinted in the mass thus obtained being, for example, then rolled or blunt.

5. Method according to any one of claims 1 to 3, characterized in that the fusion product is shaped by molding or machined into aggregates with controlled forms.

6. - Method according to any one of claims 1 to 5, characterized in that the hard fillers tinted in the mass are agglomerated by means of a colorless, transparent, or translucent, or opaque binder.

7. - Method according to any one of claims 1 to 6, characterized in that the hard fillers tinted in the mass are agglomerated by means of a bituminous binder, preferably a clear bitumen.

8. - Method according to any one of claims 1 to 6, characterized in that the hard fillers tinted in the mass are agglomerated by means of a resinous binder such as, for example, a resin chosen from the types of resin ci - after: epoxy, methacrylate, polyester, silicone, elastomer, polyamide, polyolefin, acrylic, methacrylic, polyethylene.

9. - Method according to any one of claims 1 to 8, characterized in that hard tinted fillers are used in the mass having a particle size between 0 and 14 mm.

10. Method according to claim 7, characterized in that the product resulting from the mixture of hard fillers dyed in the mass and of clear bitumen, is packaged "ready-to-use" in containers or in the form of breads. 'coated.

11. Method according to any one of claims 1 to 6, according to which the hard fillers tinted in the mass are agglomerated by means of an opaque bituminous binder, characterized in that one proceeds to a surface pickling by shot blasting of the coating , so as to eliminate a thin surface layer of said binder and to reveal the color of said fillers.

12. Method according to any one of claims 1 to 6 and 8 or 9, characterized in that the surface of the resinous coatings is brushed, and / or matt, and / or polished, and / or sanded, by means of methods and materials known per se.

13. Pavement material or other floors or surfaces, characterized in that it is obtained by implementing the method according to any one of claims 1 to 12.

14. Pavement material or other floors or surfaces, characterized in that it consists of hard, manufactured fillers colored in the mass and agglomerated by means of a hydrocarbon binder, or a resinous binder, or d '' a hydraulic binder.

15. Coating material according to claim 14, characterized in that the hard fillers consist of a glass aggregate tinted in the mass.

16. Coating material according to one of claims 14 or 15, characterized in that the agglomeration product of the hard charges colored in the mass consists of a colorless, or transparent, or translucent, or opaque binder.

17. Coating material according to claim 16, characterized in that the agglomeration product of the colored hard fillers in the mass consists of a bituminous binder, preferably a clear bitumen.

18. Coating material according to claim 16, characterized in that the agglomeration product of the colored hard fillers in the mass consists of a resinous binder such as, for example, a resin chosen from the resins below: epoxide, methacrylate, polyester, silicone, elastomer, polyamide, polyolefin, acrylic, methacrylic, polyetylene.