EP2536788A1

EP2536788A1 - Non-bituminous substance capable of being cold -laid with a spatula and processes for laying such substance

Info

Publication number: EP2536788A1
Application number: EP10714097A
Authority: EP
Inventors: Massimo Lombardi
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-02-16
Filing date: 2010-02-16
Publication date: 2012-12-26
Also published as: WO2011101874A1

Abstract

A non-bituminous substance capable of being cold-laid with a spatula is described, in particular for making roadbeds or road repairs, composed of a first liquid polymeric component, a second liquid polymeric component and solid granular aggregates. Processes for laying such substance are also described.

Description

NON-BITUMINOUS SUBSTANCE CAPABLE OF BEING COLD-LAID WITH A SPATULA AND PROCESSES FOR LAYING SUCH SUBSTANCE

The present invention refers to a non-bituminous substance capable of being cold-laid with a spatula, aimed in particular for making roadbeds or road repairs, and to processes for laying such substance.

It is known that, both in industrial and in civil buildings, in order to make pavement, above all roadbeds, parking, sidewalks, squares, zebra paths, bicycle routes, etc. or for road repairs of holes, road drain wells, kerbs, zebra crossings, ramps, etc., asphalts and other bituminous products are used whose characteristics and use modes are widely known in the art.

In particular, it is known that traditional pavements with bituminous base can be hot-prepared, therefore making their laying complex, relatively costly and sometimes dangerous for responsible operators.

Moreover, the traditional bituminous products can be scarcely resistant to attacks from alkaline- or acid- based detergents, thereby generating the need of frequent maintenance operations to road pavements subjected to the 1 action of such substances.

Moreover, traditional roads paved with bituminous- based products sometime requires the adoption of dilatation joints or escapes that, as a standard, are receptacles for dirt and spots in which the first damages and yields occur.

Moreover, some bituminous products, in order to increase the adherence of pavements made with them, have anti-skid solvent used as additives, making their environmental impact all but neglected.

Therefore, object of the present invention is solving the above prior art problems by providing a non- bituminous substance capable of being cold-laid with a spatula and processes for laying such substance, in particular for making roadbeds or road repairs.

Another object of the present invention is providing a non-bituminous substance capable of being cold-laid with a spatula characterised by a high resistance that is chemical, mechanical, to abrasions, to high and low temperatures, to pedestrian walking and to vehicle passages .

Moreover, an object of the present invention is providing a non-bituminous substance capable of being cold-laid with a spatula that cannot be attached both by alkaline- or acid-based detergents, and by saline solutions, oils, hydrocarbons and the like.

Another object of the present invention is providing a non-bituminous substance prepared for cold-laying and not hot-laying like traditional bituminous-based systems, and therefore in a simpler way, reducing costs, dangers and ecologic impacts (ozone in the atmosphere) .

Moreover, an object of the present invention is providing a non-bituminous substance capable of being cold-laid with a spatula that is completely free from odours and non-toxic, therefore also suitable for being used in foodstuff environments.

Another object of the present invention is providing processes for laying such substance, in particular for making roadbeds, that do not require the use of dilatation joints or escapes.

Moreover, an object of the present invention is providing processes for laying such substance for making draining and non-draining, anti-freeze and anti-skid road pavements, without using solvents. Another object of the present invention is providing processes for laying such substance for making road pavements whose thickness is lower than the one made with traditional bituminous products, though keeping unchanged, or even greater, the necessary resistance requirements.

The above and other objects and advantages of the T/IT2010/000051 invention, as will appear from the following description, are obtained with a non-bituminous substance capable of being cold-laid with a spatula as claimed in claim 1.

Moreover, the above and other objects and advantages of the invention are obtained with laying processes as claimed in claims 12 to 16.

Preferred embodiments and non-trivial variations of the present invention are the subject matter of the dependent claims.

It will be immediately obvious that numerous variations and modifications (for example related to shape, sizes, arrangements and parts with equivalent functionality) can be made to what is described without departing from the scope of the invention as appears in the enclosed claims.

The present invention will be better described by some preferred embodiments thereof, provided as a non- limiting example.

Advantageously, the non-bituminous substance capable of being cold-laid with a spatula according to the present invention is composed of a first liquid polymeric component, a second liquid polymeric component and solid granular aggregates, preferably of a mineral and quartz origin.

Preferably, the catalysis ratio in weight provides IT2010/000051 for 2 parts of first liquid polymeric component, 1 part of second liquid polymeric component and 5 to 30 parts of solid granular aggregates.

Preferably, the first liquid polymeric component is composed of:

an amount in weight of a first mixture composed of a reaction product between bisphenole and epichloridrine (CAS: 25068-38-6) and oxirane, mono [ (cl2-14- alkiloxi)methyl] (CAS: 68609-97-2) included between 55.3% and 63.4%: preferably such first mixture is composed of 80% of the reaction product between bisphenole and epichloridrine (CAS: 25068-38-6) and 20% of oxirane, mono[ (cl2-14-alkiloxi)methyl] (CAS: 68609-97-2);

an amount in weight of polyether polyole (CAS: 9082- 00-2) included between 6.3% and 15.3%

an amount in weight of ethoxylated castor oil (38) (CAS: 61791-12-6) included between 14.7% and 16.8%;

an amount in weight of aluminium hydroxide (CAS: 21645-51-2) included between 1.3% and 3.1%;

- an amount in weight of alkaline aluminium-silicate (CAS: 1318-02-1) included between 0.9% and 1.1%;

an amount in weight of a second mixture composed of distillates (oil) , light fraction of "hydrotreating" (CAS: 64742-47-8) and of cycloexanone (CAS: 108-94-1) included between 1.5% and 0.6%: preferably, such second mixture is composed of 65% of distillates (oil), light fraction of "hydrotreating" (CAS: 64742-47-8) and of 35% of cycloexanone (CAS: 108-94-1); and

an amount in weight of titanium dioxide (CAS: 13463- 67-7) included between 9.2% and 10.5%.

Preferably, the second liquid polymeric component is composed of:

an amount in weight of a third mixture composed of benzyl alcohol (CAS: 100-51-6), of polyethoxilated alcohol (CAS: 9043-30-5), of metaxilendiammine (CAS: 1477-55-0), of 3, 6-diazaoctane-l, 8-diammine (CAS: 112-24- 3) included between 73.1% and 79.5%: preferably such third mixture is composed of 44.4% of benzyl alcohol (CAS: 100-51-6), 27.8% of polyethoxilated alcohol (CAS: 9043-30-5), 11.1% of metaxilendiammine (CAS: 1477-55-0), 16.7% of 3, 6-diazaoctane-l, 8-diammine (CAS: 112-24-3); an amount in weight of octile adipate, adipate of bis (2-ethylexiles) (CAS: 103-23-1) included between 5% and 12.7%;

- an amount in weight of diphenylmethandiisocianate, isomers and homologues (CAS: 9016-87-9) included between 14.2% and 15.5%.

Preferably, the solid granular aggregates are granules of a mineral, quartz or stone origin having a granulometric curve variable depending on the specific application, based on which the amount of such aggregates also changes within the composition of the substance according to the present invention. Obviously, by modifying typology, size and colour of aggregates, it is possible to give the substance according to the present invention different mechanical and aesthetic peculiarities.

In particular, the following Table 1 shows the ranges of preferred amounts in weight present inside the substance of the solid granular aggregates for making a closed, non-draining roadbed:

Amount of aggregates (% in

Granulometry

weight )

0.1 to 0.6 22.5% to 37.5%

0.6 to 1.5 37.5% to 62.5%

1.5 to 8 15% to 25%

Tab] Le 1

The following Table 2 shows instead the ranges of preferred amounts in weight present inside the substance of the solid granular aggregates for making a semi- closed, semi-draining roadbed: Amount of aggregates (% in

Granulometry

weight )

0.1 to 0.6 7.9% to 12%

0.6 to 1.5 28% to 52.6%

1.5 to 8 39.5% to 60%

Tab] Le 2

The following Table 3 instead shows the ranges of preferred amounts in weight present inside the substance of the solid granular aggregates for making an open, draining roadbed:

Amount of aggregates (% in

Granulometry

weight )

0.6 to 1.5 8.9% to 10.9%

1.5 to 8 13% to 29.4%

8 to 16 61.7% to 76.1%

Tab] .e 3

The substance according to the present invention as described above have characteristics of a high chemical and mechanical resistance, resistance to abrasions, to pedestrian walking and, in case of aggregates with bigger granulometry, to vehicle passages. In particular, the substance according to the present invention allows an extremely practical laying, since it can be cold-laid, greatly reducing costs, complexity and dangerousness of laying operations, and it is advisable for:

making pavements of roads, parking, pedestrian paths, bicycle routes, also covering old, pre-existing pavements ;

performing repairs of roads, of holes, of road drain wells, of kerbs, of zebra crossings, of ramps, etc.

Moreover, the substance according to the present invention allows obtaining surfaces with reduced environmental impact and therefore suitable to be used also in urban historical centres, for example for making sidewalks, lanes, squares or streets.

Moreover, the substance according to the present invention allows making road pavements having lower thickness than the one made with traditional bituminous products, though keeping unchanged the necessary resistance requirements: in particular, the substance according to the present invention allows obtaining, based on different applications, the following minimum thickness :

10 mm for pedestrian/bicycle areas;

15 mm for vehicle areas;

6 mm for pedestrian/bicycle areas reducing the aggregate granulometry.

The present invention further refers to some processes for cold-preparing and applying the substance according to the present invention for making the above works .

In particular, the present invention refers to a process for making a pavement with the substance according to the present invention comprising the steps of:

a) preparing the subgrade on which the pavement must be made by laying at least one layer of a mixture composed of the first and second liquid polymeric component. Preferably, such step comprises the substeps of:

al) possibly cleaning the subgrade from traces of oils or greases and parts incoherent or under detachment: when there are parts incoherent or under detachment, taking care of removing them and/or in case of deep holes on the surface of the subgrade taking care of filling them, for example with cold bitumen, chemical pier or cement mortar;

a2) priming the subgrade, both of the cement or of the bituminous type, with the mixture composed of the first and second liquid polymeric component, preferably in the amount of about 300 g/m² to guarantee a better grasping of the afterwards laid substance according to the present invention;

b) preparing the substance according to the present 10 000051 invention by mutually mixing the first liquid polymeric component, the second liquid polymeric component and the solid granular aggregates. Preferably, such step comprises the substeps of:

bl) accurately mixing and blending the first liquid polymeric component with the second liquid polymeric component, preferably for about 1 minute, possibly with the help of a suitable mechanical mixer, such as for example a kneading machine or a drill equipped with a mechanical whip with a low number of revolutions;

b2) adding the solid granular aggregates to the above mixture and going on mixing, preferably for other at least 3 - 4 minutes, till the substance according to the present invention is obtained;

c) laying the substance according to the present invention onto the subgrade for making the pavement. Preferably, such step comprises the substeps of:

cl) pouring the substance according to the present invention onto the previously primed subgrade to be coated;

c2) suitably laying the substance according to the present invention by propping it and using suitable metallic spatulas and having care of constantly repeating the various jet restarts;

c3) obtaining the minimum uniform thickness as previously defined: if a sidewalk is made, or very long bicycle paths, squares or roads and with a suitable width (minimum 1.40 m. ) it is advisable to use rubbery vibrating-finishing machines or vibrating compactors to reduce application times and costs;

d) applying the mixture composed of the first and second liquid polymeric component on the laid substance according to the present invention. Preferably, such step comprises the substeps of:

dl) after a period of time preferably included between 1 and 24 hours from laying the substance according to the present invention, applying the mixture composed of the first and second liquid polymeric component, preferably in an amount of 200 g/m²;

d2) letting a period of time pass, preferably included between 12 and 36 hours, to allow hardening the substance according to the present invention and the following capability of being used by pedestrians and/or vehicles of the pavement made thereby.

In particular, the present invention further refers to a process for repairing holes or road drain wells through the substance according to the present invention comprising the steps of:

a) preparing the subgrade on which the repair must be made by laying at least one layer of a mixture composed of the first and second liquid polymeric component. Preferably, such step comprises the substeps of:

al) performing a perimeter cut on the hole edges or on the external edge of the road drain well till its iron profile is uncovered;

a2) possibly cleaning the subgrade from traces of oils or greases and parts incoherent or under detachment;

a2) consolidating and priming the visible part through surface spraying with the mixture composed of the first and second liquid polymeric component, preferably in an amount of about 300 g/m²;

b) preparing the substance according to the present invention by mutually mixing the first liquid polymeric component, the second liquid polymeric component and the solid granular aggregates. Preferably, such step comprises the substeps of:

bl) carefully mixing and blending the first liquid polymeric component with the second liquid polymeric component, preferably for about 1 minute, possibly with the help of a suitable mechanical mixer, such as for example with the help of a suitable mechanical mixer, such as for example a kneading machine or a drill equipped with mechanical whip with low number of revolutions ;

c) filling the perimeter cut with the substance according to the present invention. Preferably, such step comprises the substeps of:

cl) filling the cut obtained with the substance according to the present invention with a minimum thickness, preferably 10 mm, taking care of jointing the surface with the external edge of the hole or the road drain well ;

d) applying the mixture composed of the first and second liquid polymeric component on the substance according to the present invention. Preferably, such step comprises the substeps of:

dl) applying the mixture composed of the first and second liquid polymeric component, preferably in an amount of 200 g/m²;

d2) letting a period of time pass, preferably included between 0 and 6 hours, to allow hardening the substance according to the present invention and its following capability of being used by pedestrians and/or vehicles.

In particular, the present invention further refers to a process for making high-visibility zebra crossings through the substance according to the present invention comprising the steps of:

a) preparing the subgrade on which the zebra crossings must be made by laying at least one layer of a mixture composed of the first and second liquid polymeric component. Preferably, such step comprises the substeps of:

al) performing on the roadbed a scarifying, preferably of the depth of 8-10 mm;

a3) consolidating and priming the visible part through surface spraying with the mixture composed of the first and second liquid polymeric component, preferably in an amount of about 300 g/m²;

bl) carefully mixing and blending the first liquid polymeric component with the second liquid polymeric component, preferably for about 1 minute, possibly con the help of a suitable mechanical mixer, such as for example a kneading machine or a drill equipped with mechanical whip with low number of revolutions; b2) adding the solid granular aggregates to the above mixture and going on mixing, preferably for other at least 3 - 4 minutes, till the substance according to the present invention is obtained;

c) making the zebra crossings by alternating the application of the substance according to the present invention in different colours. Preferably, such step comprises the substeps of:

cl) placing metallic or plastic set irons with a suitable profile delimiting the parts to be made of a white colour from the side parts to be made of a red, light blue, black or other colour;

c2) laying the substance according to the present invention with a white colour by filling the above set irons;

c3) laying the substance according to the present invention with a red, light blue or black colour on the whole rest of the surface till the lateral set irons and all around those containing white colour.

c4) propping la substance according to the present invention with a minimum thickness preferably of 10 mm, possibly with following smoothing through a metallic darby with smooth surface;

d) applying the mixture composed of the first and second liquid polymeric component on the laid substance 0 000051 according to the present invention. Preferably, such step comprises the substeps of:

dl) after a period of time preferably included between 1 and 12 hours from laying the substance according to the present invention, applying the mixture composed of the first and second liquid polymeric component, preferably in an amount of 200 g/m²;

d2) letting a period of time pass preferably included between 12 and 36 hours to allow hardening substance according to the present invention and the following capability of being used by pedestrians and/or vehicles of the zebra crossings made thereby.

In particular, the present invention further refers to a process for making zebra crossings with high nocturnal visibility through the substance according to the present invention comprising the steps of:

al) performing on the roadbed a scarifying, preferably of a depth of 8-10 mm;

a2) possibly cleaning the subgrade from traces of oils or greases and parts incoherent or under detachment; a3) consolidating and priming the visible part through surface spraying with the mixture composed of the first and second liquid polymeric component, preferably in an amount of about 300 g/m²;

bl) carefully mixing and blending the first liquid polymeric component with the second liquid polymeric component, preferably for about 1 minute, possibly with the help of a suitable mechanical mixer, such as for example a kneading machine or a drill equipped with mechanical whip with low number of revolutions;

cl) placing metallic set irons of the dilatation joints delimiting the parts to be made in white colour from the lateral parts to be made of a red, light blue or black colour;

c2) laying the substance according to the present invention in white colour by filling the above set irons; c3) laying the substance according to the present invention in a red, light blue, black or another colour on the whole rest of the surface till the lateral set irons and all around those containing the white colour. c4) propping the substance according to the present invention with a minimum thickness preferably of 10 mm, possibly with following smoothing through a metallic darby with smooth surface;

d) preparing a mixture composed of the first and second component and applying such mixture onto the substance according to the present invention. Preferably, applying such mixture onto the substance according to the present invention in white colour, preferably in an amount of about 1-3 kg/m² using a suitable tool, such as, for example, a brush, a roller, a spatula, an airless, etc.; e) applying the mixture composed of the first and second liquid polymeric component onto the laid substance according to the present invention. Preferably, such step comprises the substeps of:

el) after a period of time preferably included between 1 and 12 hours from laying the substance according to the IT2010/000051 present invention, applying the mixture composed of the first and second liquid polymeric component, preferably in an amount of 200 g/m²;

e2) letting a period of time pass preferably included between 12 and 36 hours to allow hardening the substance according to the present invention and the following capability of being used by pedestrians and/or vehicles of the zebra crossings made thereby.

In particular, the present invention further refers to a process for making heated zebra crossings or ramps through the substance according to the present invention comprising the steps of:

al) performing on the roadbed a scarifying, preferably of a depth of 8-10 mm;

a3) consolidating and priming the visible part through surface spraying with the mixture composed of the first and second liquid polymeric component, preferably in an amount of about 300 g/m²; b) laying an ice-preventing system according to the prior art, of the type with a heating net panel, on such subgrade. Preferably, such step comprises the substeps of:

bl) after a period of time preferably included between 4 and 12 hours from laying the above mixture, accurately mixing a elastic conductive gluing agent (for example KEM ELASTIK T®) , possibly using a drill equipped with mechanical whip, till a homogeneous mix is obtained;

b2) applying a first layer of elastic conductive gluing agent onto the surface to be treated, paying attention not to leave missed points, by possibly using a suitable tool, such as for example a toothed/smooth spatula, creating a uniform surface;

b3) laying the heating net panel onto the elastic conductive gluing agent making it perfectly adhere, possibly using a smooth spatula;

b4) applying on the heating net panel a second layer of elastic conductive gluing agent, paying attention not to leave missed points, by possibly using a suitable tool, such as for example a toothed/smooth spatula, creating a uniform surface;

b5) spraying quartz sand onto the second layer of elastic conductive gluing agent, in order to favour the grip of the following laying of the substance according to the present invention;

b6) letting a period of time pass, preferably included between 2 and 12 minutes, before laying the substance according to the present invention;

c) preparing the substance according to the present invention by mutually mixing the first liquid polymeric component, the second liquid polymeric component and the solid granular aggregates. Preferably, such step comprises the substeps of:

cl) carefully mixing and blending the first liquid polymeric component with the second liquid polymeric component, preferably for about 1 minute, possibly with the help of a suitable mechanical mixer, such as for example a kneading machine or a drill equipped with mechanical whip with low number of revolutions;

c2) adding the solid granular aggregates to the above mixture and going on mixing, preferably for other at least 3 - 4 minutes, till the substance according to the present invention is obtained;

d) making the zebra crossings by alternating the application of the substance according to the present invention in different colours on the heating net panel. Preferably, such step comprises the substeps of:

dl) placing metallic set irons of the dilatation joints delimiting the parts to be made of white colour from the lateral parts to be made in a red, light blue, black or other colour;

d2) laying the substance according to the present invention in white colour by filling the above set irons; d3) laying the substance according to the present invention with a red, light blue or black colour on the whole rest of the surface till the lateral set irons and all around those containing the white colour.

d4) propping the substance according to the present invention with a minimum thickness, preferably 10 mm, possibly with following smoothing through a metallic darby with smooth surface;

e) applying the mixture composed of the first and second liquid polymeric component onto the laid substance according to the present invention. Preferably, such step comprises the substeps of:

el) after a period of time preferably included between 1 and 12 hours from laying the substance according to the present invention, applying the mixture composed of the first and second liquid polymeric component, preferably in an amount of 200 g/m²;

e2) letting a period of time pass preferably included between 12 and 36 hours to allow hardening the substance and the following capability of use by pedestrians and/or vehicles of the zebra crossings made thereby.

Claims

1. Non-bituminous substance capable of being cold-laid with a spatula, in particular for making pavements or road repairs, characterised in that it is composed of un first liquid polymeric component, a second liquid polymeric component and solid granular aggregates.

2. Substance according to claim 1, characterised in that said solid granular aggregates are of mineral, quartz or stone origin.

3. Substance according to claim 1, characterised in that a catalysis ratio in weight is of 2 parts of said first liquid polymeric component, 1 part of said second liquid polymeric component and of 5 to 30 parts of said solid granular aggregates.

4. Substance according to claim 1, characterised in that said first liquid polymeric component is composed of:

an amount in weight of a first mixture composed of a reaction product between bisphenole and epichloridrine and oxirane, mono [ (cl2-14-alkiloxi) methyl] included between 55.3% and 63.4%;

an amount in weight of polyether polyole included between 6.3% and 15.3%

an amount in weight of ethoxylated castor oil (38) included between 14.7% and 16.8%; an amount in weight of aluminium hydroxide included between 1.3% and 3.1%;

an amount in weight of alkaline aluminium-silicate included between 0.9% and 1.1%;

an amount in weight of a second mixture composed of distillates (oil) , light fraction of "hydrotreating" and of cycloexanone (CAS: 108-94-1) included between 1.5% and 0.6%; and

an amount in weight of titanium dioxide included between 9.2% and 10.5%.

5. Substance according to claim 4, characterised in that preferably said first mixture is composed of 80% of said reaction product between bisphenole and epichloridrine and 20% of said oxirane, mono [ (cl2-14- alkiloxi) methyl] .

6. Substance according to claim 4, characterised in that said second mixture is composed of 65% of said distillates (oil) , light fraction of "hydrotreating" and of 35% of said cycloexanone.

7. Substance according to claim 1, characterised in that said second liquid polymeric component is composed of:

an amount in weight of a third mixture composed of benzyl alcohol, of polyethoxilated alcohol, of metaxilendiammine, of 3, 6-diazaoctane-l , 8-diammine included between 73.1% and 79.5%;

an amount in weight of octile adipate, adipate of bis 2-etylexiles) included between 5% and 12.7%;

an amount in weight of diphenylmethandiisocianate, isomers and homologues included between 14.2% and 15.5%.

8. Substance according to claim 7, characterised in that said third mixture is composed of 44.4% of said benzyl alcohol, 27.8% of said polyethoxilated alcohol, 11.1% of said metaxilendiammine, 16.7% of said 3,6- diazaoctane-1, 8-diammine .

9. Substance according to claim 1, characterised in that said substance comprises 22.5% to 37.5% of said aggregates with granulometry included between 0.1 and 0.6 or 37.5% to 62.5% of said aggregates with granulometry included between 0.6 and 1.5 or 15% to 25% of said aggregates with granulometry included between 1.5 and 8.

10. Substance according to claim 1, characterised in that said substance comprises 7.9% to 12% of said aggregates with granulometry included between 0.1 and 0.6 or 28% to 52.6% of said aggregates with granulometry included between 0.6 and 1.5 or 39.5% to 60% of said aggregates with granulometry included between 1.5 and 8.

11. Substance according to claim 1, characterised in that said substance comprises 8.9% to 10.9% of said aggregates with granulometry included between 0.6 and 1.5 or 13% to 29.4% of said aggregates with granulometry included between 1.5 and 8 or 61.7% to 76.1% of said aggregates with granulometry included between 8 and 16.

12. Process for making a pavement through the substance according to any one of claims 1 to 11, characterised in that it comprises the steps of:

a) preparing a subgrade on which the pavement must be made by laying at least one layer of a mixture composed of said first and second liquid polymeric component ;

b) preparing said substance by mutually mixing said first liquid polymeric component, said second liquid polymeric component and said solid granular aggregates; c) laying said substance onto said subgrade for making said pavement;

applying said mixture composed of said first and second liquid polymeric component onto said laid substance.

13. Process for repairing road holes or road drain wells through the substance according to any one of claims 1 to 11, characterised in that it comprises the steps of:

a) preparing a subgrade on which said repair must be made by laying at least one layer of a mixture composed of said first and second liquid polymeric component;

b) preparing said substance by mutually mixing said first liquid polymeric component, said second liquid polymeric component and said solid granular aggregates; c) filling a perimeter cut performed on said subgrade with said substance;

d) applying said mixture composed of said first and second liquid polymeric component onto said substance.

14. Process for making zebra crossings through the substance according to any one of claims 1 to 11, characterised in that it comprises the steps of:

a) preparing a subgrade on which said zebra crossings must be made by laying at least one layer of a mixture composed of said first and second liquid polymeric component ;

b) preparing said substance by mutually mixing said first liquid polymeric component, said second liquid polymeric component and said solid granular aggregates; c) making said zebra crossings by alternating the application of said substance in different colours;

d) applying said mixture composed of said first and second liquid polymeric component onto said laid substance .

15. Process for making zebra crossings with high nocturnal visibility through the substance according to any one of claims 1 to 11, characterised in that it comprises the steps of:

d) preparing a mixture composed of said first and second components and applying said mixture onto said substance in white colour;

e) applying said mixture composed of said first and second liquid polymeric component on said laid substance.

16. Process for making heated zebra crossings or ramps through the substance according to any one of claims 1 to 11, characterised in that it comprises the steps of:

a) preparing a subgrade on which said zebra crossings must be made by laying at least one layer of a mixture composed of said first and second liquid polymeric component;

b) laying an ice-preventing system of a type with heating net panel onto said subgrade;

c) preparing said substance by mutually mixing said first liquid polymeric component, said second liquid polymeric component and said solid granular aggregates; d) making said zebra crossings by alternating the application of said substance in different colours on said heating net panel;

e) applying said mixture composed of said first and second liquid polymeric component onto said laid substance.