WO2020013418A1 - Melting fiber coat for tack coating, manufacturing method thereof, and asphalt pavement method using same - Google Patents

Abstract

The present invention relates to a melting fiber coat for tack coating, a manufacturing method thereof, and an asphalt pavement method using same, the melting fiber coat being capable of replacing tack coating formed by a spraying method in a liquid phase for providing adhesion and preventing moisture penetration between a base layer and a surface layer (or asphalt) when paving an asphalt road. That is, the present invention comprises: a low melting point fusion sheet, formed of a woven or non-woven fabric, in which a tack coating layer is integrally fixed by impregnating an asphalt emulsion into a first low melting point fiber body to be melted at a predetermined temperature, and a low melting point moisture barrier layer, which is formed by incorporating a second low melting point fiber body into the low melting point fusion sheet so as to absorb moisture generated when the low melting point fusion sheet is melted and to supplement moisture resistance and waterproofness, wherein after covering the base layer with solidified tack coating, an asphalt pavement for the surface layer is formed immediately.

Description

Fiber fusion coat for tack coating and its manufacturing method and asphalt paving method using the same

The present invention is a fiber fusion coating for tack coating and a method for manufacturing a tack coating that can replace the tack coating formed by spraying in a liquid phase to prevent adhesion and moisture penetration between the base layer and the surface layer (or asphalt) when paving asphalt roads and It relates to an asphalt pavement method using the same.

In general, road pavement increases traffic due to social development. As a result, many asphalt pavements have been expanded to solve the shortage of road problems caused by the increase in size of vehicles. The asphalt pavement is composed of a roadbed, a base layer, and a surface layer (asphalt), and the surface layer and the base layer are solidified by a roller or the like by uniformly spreading it by heating / mixing crushed stone, sand, stone powder and asphalt.

Asphalt pavements, however, have poor adaptability to weight, lack of adhesion due to lack of adhesion due to loss of tack coat layer during installation, day and night or seasonal temperature variations, chloride penetration to eliminate freezing and freezing. Not only does it cause various deformations in the horizontal or vertical direction due to fatigue due to traffic loads, but also causes the breakage of cracks or port holes, etc., resulting in enormous maintenance costs.

  As a result, many research projects, various types of asphalt reinforcement, asphalt modifiers, etc. have been researched and developed to improve the durability of asphalt pavement to reduce the average life span of asphalt pavement and maintenance budget. have.

However, many asphalt modifiers and asphalt reinforcements that are currently applied are effective in road durability and resistance to plastic deformation, but they also require a lot of road paving costs due to the high cost of raw materials and processing and production processes in the factory. As it is being constructed only in a very small part, the addition of the construction of asphalt modifier and asphalt reinforcement separately, the work efficiency is lowered, and various inefficient problems occur as the working time is extended.

The problem to be solved more fundamentally than the study of asphalt modifier and asphalt reinforcement is fundamentally urgently needed to improve the use of tack coating which is being carried out to secure the adhesion of the surface layer and substrate of the asphalt pavement.

The role of the tack coating layer in the pavement construction phase of asphalt roads is to prioritize the adhesion between the uppermost layer (base) and the surface layer (asphalt or base layer), preventing the penetration of moisture or foreign substances into the substrate and preventing moisture. Due to the strengthening of the binding force with the surface layer, it is possible to prevent the shear sliding phenomenon and the upper and lower lifting phenomenon between the base layer and the surface layer by strengthening the tensile strength and the shear strength.

However, conventionally, after the tack coating, the curing period (required more than 12 hours) is not fulfilled according to the standard specification of the road pavement construction.In the rush of pavement without curing, the external environment of the surrounding environment As foreign substances such as gravel and dust penetrate onto the sprayed tack coating, and the tack coating adheres to wheels such as dump trucks and finishers for laying asphalt, and the loss of adhesion between base and surface layers is reduced. As a result, the durability of the asphalt is degraded due to the interlayer separation and the jungle, thereby decreasing the service life of the asphalt road.

Therefore, it prevents the loss of tack coating during asphalt pavement work, so that it can perform its original function and it can shorten the construction time by enabling asphalt laying work immediately after the tack coating process on the base surface without additional curing process. New technology development is required.

<Preceding technical literature>

(Patent Document 1) KR 10-11427375 B1 2014. 07. 31

In the present invention, to solve the above-mentioned problems of the prior art, a new technology was devised, and the tack coating was melted at a constant temperature in the form of a solid sheet of the finished product in a state where the asphalt emulsion was fixed. It is easy to install and solidify because it is covered to cover, and there is no fear of tack coating on the wheels of asphalt or construction vehicles, and it works closely to bond the base and the surface to strengthen the binding force. The purpose of the present invention is to provide a fiber fusion coating for tack coating, a method for manufacturing the same, and an asphalt pavement method using the same, by improving adhesion strength according to the present invention.

In addition, another object of the present invention by using a tack coating fiber fusion coating for the tack coating construction that is different from the conventional is possible as soon as possible asphalt laying work without curing period is possible for the tack coating that can significantly shorten the asphalt paving construction period An object of the present invention is to provide an asphalt paving method using a fiber fusion coat.

As a specific means for solving the problems of the present invention, the tack coating fiber fusion coating according to the present invention is a woven or non-woven fabric in which the tack coating layer is integrally fixed by impregnating an asphalt emulsion in the first low melting point fiber body to be melted at a predetermined temperature And a low melting point moisture barrier layer formed by incorporating a second low melting point fiber body into the low melting point melting sheet to absorb moisture generated when the low melting point melting sheet is melted and supplement moisture resistance and waterproofness. And, after covering the solidified tack coating on the base layer, it is characterized in that the asphalt laying for the surface layer is configured to be made immediately.

In addition, the tack coating layer of the low-melting point fusion sheet is composed of a tack coat composition composed mainly of asphalt emulsion selected from any one of the bitumen material RSC-O, RSC-1 RSC-3, RSC-4, the tack coat composition The asphalt emulsion is characterized in that it comprises 50 to 70% by weight, water 20 to 40% by weight, emulsifier 2 to 8% by weight, additives 0.1 to 1% by weight, modifier 1 ~ 7.9% by weight.

In addition, the low-melting-point fusion sheet further comprises a hardening induction layer by a hardener to induce hardening of the tack coating layer and to easily adhere to the first low-melting-point fiber body, wherein the hardener is an epoxy hardener, an RSC rapid hardener, or an enamel series. It is characterized by consisting of any one.

In addition, the first low-melting-point fibrous body 10 has a weight of 80 to 280 g / m 2, a thickness of 0.40 to 0.80 mm, a tensile strength of 8 to 30 g / d, a tensile elongation of 15 to 75%, and an air permeability of 100 to facilitate the impregnation of the asphalt emulsion. It consists of 400 cm 2 / sec properties, the second low melting point fiber body 40 is 20 ~ 60g / ㎡, 0.10 ~ 0.35㎜ in thickness, tensile strength 2 ~ 6g so as to thinly merge the low melting point fusion sheet (1) for waterproof / d, tensile elongation 20 to 60%, characterized in that the ventilation is composed of 100 ~ 21 ㎠ / sec physical properties.

In addition, the method for producing a fiber fusion coating for tack coating according to the present invention comprises the steps of providing the first and second low melting point fibers in the form of woven or non-woven low melting point fibers to be melted at a predetermined temperature (S10); A step (S20) of manufacturing a low melting point fusion sheet having a tack coating layer and a hardening induction layer formed on a first low melting point fiber body; Forming a low melting point moisture barrier layer on the low melting point sheet by laminating the second low melting point fiber body so as to compensate for the waterproofness of the low melting point sheet (S30); and the step (S20) includes the first low melting point fiber body. The step of forming a tack coating layer (S20-1) on the first low melting point fiber body impregnated with the tack coat composition mainly composed of asphalt emulsion while guiding (S20-1), and the rapid curing of the tack coat composition impregnated on the first low melting point fiber body. A step of forming a hardening induction layer on the tack coating layer of the first low melting point fibrous body impregnated with a curing agent to the first low melting point fibrous body impregnated with the tack coat composition (S20-2) and the first low melting point fiber The tack coating layer of the sieve comprises a dryer drying step (S20-3) and the completion of the low melting point fusion sheet (S20-4) to dry to cure by the action of the curing induction layer, according to the manufacturing steps of S10 ~ S30 Tack coating solidified in sheet form for covering installation Characterized in that it can be manufactured into a finished product.

In addition, the first and second low melting point fibers are copolyester-based resins and polyethylenes synthesized by reacting acids and alcohols to melt at 120 ° C. to 140 ° C. of the asphalt to be laid. (polyethylene), polypropylene (polypropylene), it is characterized in that the production of woven or non-woven fabric by selecting any one of the polyurethane (polyurethane).

In addition, the dryer drying step (S20-3) is to form a tack coating layer and a hardening induction layer on the first low-melting-point fiber body, and then call the drying device made of a polymerization type dryer or an oxidizing dryer,

The drying agent may be selected from any one of alcohol-based ethanol, methanol, and ether-based ethylene having a purity of 75% or more and drying at a low temperature of 0 to 2 ° C.

In addition, the asphalt paving method using the tack coating fiber fusion coat according to the present invention is to form a tack coating by covering the tack coating fiber fusion coat on the surface of the base layer using the tack coating fiber fusion coat, After covering the tack coat fiber fusing coat on the base layer, it is characterized in that the laying of asphalt for the surface layer formation immediately above the tack coating fiber fusing coat without a separate curing process.

According to the present invention, the fusion coating for tack coating and the method for manufacturing the same, the tack coating is integrally fixed to the low melting point fiber melted at a certain temperature, so that the sheet-shaped tack coating can be manufactured and supplied as one finished product. New types of tack coatings can be provided for paving.

In addition, the fiber fusion coating for tack coating is very convenient, as the installation itself is installed by simply covering the base layer. This eliminates the inconvenience that the heating device for liquefying the asphalt emulsion in the field and the coating device for spraying are separately required, and can also eliminate the fire hazard by the heating device.

In addition, since it is in a solid state, it is possible to reduce the construction period and economical construction without the need for a separate curing period after construction on the basement, and economical construction is possible. Asphalt construction is possible without limitation.

In addition, there is no fear of loss of tack coating on the wheels of asphalt laying equipment or construction vehicles, and the fusion coating for the tack coating is melted by the asphalt temperature to be laid, thereby exerting a close fusion between the base layer and the surface layer. As the binding force between the base layer and the surface layer, the tensile strength and the shear strength are strengthened and the adhesion strength is improved, the durability and service life of the asphalt can be maximized.

In addition, the tack coating fiber fusion coating is in the form of a sheet can be tack coating treatment in the form of a cut portion to the damaged portion, such as a port hole, and at the same time can be easily carried out a partial repair of the asphalt road.

1 is a view showing the configuration of a conventional asphalt road

Figure 2 is a view showing the configuration of a fiber fusion coating for tack coating according to the present invention

Figure 3 is a flow chart showing a manufacturing method of a fiber fusion coating for tack coating according to the present invention

Figure 4 schematically shows the manufacturing process of the fiber fusion coating for tack coating according to the present invention

Hereinafter, the present invention will be described in detail with reference to specific embodiments of the accompanying drawings. 1 is a view showing a configuration of a fiber fusion coating for tack coating according to the present invention.

The fiber fusion coating (3) for tack coating according to the present invention comprises a tack coating (300) in a single finished product form by impregnating and fixing the low-melting point fibers melted at a certain temperature asphalt asphalt to provide a manufacturing method for manufacturing the same There are technical features.

The tack coating fiber fusion coating (3) of the present invention is a convenient tack coating method unlike the conventional method of spraying the surface of the base layer 100 with a coating apparatus before liquefying the asphalt emulsion by the heating device to lay the surface layer In addition, the tack coating 300 can be completely prevented from being buried in the wheels of the installation equipment and construction vehicles for laying asphalt.

The tack coating fiber fusion coating 3 of the present invention for this purpose is a low melting point fusion sheet in which the tack coating layer 20 and the hardening induction layer 30 are integrally fixed to the first low melting point fiber body 10 that is melted at a predetermined temperature. (1) and the second low melting point fiber sheet 40 to the low melting point fusion sheet 1 to prevent the penetration of moisture generated when the low melting point fusion sheet 1 is melted at a predetermined temperature and to compensate for waterproofing It comprises a low melting point moisture barrier layer 2 formed by combining.

The first low melting point fibrous body 10 and the second low melting point fibrous body 40 may be manufactured and provided in the form of a woven or nonwoven fabric which is melted at 120 ° C. to 140 ° C.

Here, the low melting point fiber (LOW MELTING FIBER: LMF) is melted at a low temperature of 90 ~ 140 ℃ unlike ordinary fibers to replace the chemical or artificial adhesive, the first, second low melting point fiber body (10, 40) is a copolyester resin synthesized by the reaction of an acid and an alcohol, and is configured to have a characteristic of melting at a low temperature.

Meanwhile, the first and second low melting point fibers 10 and 40 may be selectively used in any one or more of polyethylene, polypropylene, and polyurethane.

Physical properties of the first low-melting-point fibrous body 10 include a weight of 80 to 280 g / m 2, a thickness of 0.40 to 0.80 mm, a tensile strength of 8 to 30 kg, an elongation of 15 to 75%, and an air permeability of 100 to 400 cm 2 / cm 2 / sec. It consists of a woven or nonwoven form.

The second low melting point fiber 40 has a weight of 20 to 60 g / m 2, a thickness of 0.10 to 0.35 mm, a tensile strength of 2 to 6 g / d, a tensile elongation of 20 to 60%, and a breathability of 100 to 210 cm 2 / cm 2. It consists of a woven or nonwoven fabric of / sec.

Wherein the second low-melting-point fiber body 40 is formed by combining the low-melting-point fusion sheet (1) in which the tack coating is integrally formed to form a low-melting-moisture-proof layer (2) based on physical properties for the role of preventing moisture penetration and waterproofing It is formed relatively smaller than the first low melting point fiber body 10.

The tack coating layer 20 is integrally fixed by impregnating and curing the tack coat composition 21 in the first low melting point fiber body 10.

The tack coat composition 21 for this includes 50 to 70% by weight of asphalt emulsion, 20 to 40% by weight of water, 2 to 8% by weight of emulsifier, 0.1 to 1% by weight of additive, and 1 to 7.9% by weight of modifier. The emulsion may be selected from any of bituminous materials RSC-O, RSC-1 RSC-3, RSC-4.

Here, the emulsifier is diluted to mix black or brown asphalt emulsion mainly composed of hydrocarbons and the like, and water of other properties, after refining the volatile classification among the components of asphalt crude oil, and the additive is not mixed with two physical properties. It is a role of homogeneously mixing or maintaining the liver, and stabilizers and modifiers complement each other so that they can be easily worked at room temperature.The cationic system is fatty diamine salt, the ammonium salt is anionic, soap, and calcium fonate salt. The ionic system includes polyoxyethylene alkoxy and phenol ether, and is composed of a small amount of alcohol.

The curing induction layer 30 is a tack coat composition 21 to form a tack coating layer 20 so as to induce a fast curing action on the first low-melt fibers (10) to quickly fix the tack coat composition (21) After the first impregnation, the hardener 31 is impregnated second.

At this time, the curing agent 31 is selected from any one of epoxy curing agents, RSC rapid curing agent, enamel series, and is rapidly dried in a dryer method after impregnated with 0.2 ~ 3 l / ㎡.

The low melting point moisture barrier layer 2 is a tack coating layer 20 and the curing induction layer 30 is fixed to the second low melting point fiber body 40 having a relatively thin thickness compared to the first low melting point fiber body 10 The low melting point fusion sheet 1 is integrated with an adhesive.

The low melting point moisture barrier layer 2 prevents the moisture generated by the temperature difference during the asphalt installation from penetrating into the base layer 100 to impart a function and action to complement the water resistance of the low melting point melting sheet 1.

The tack coating fiber fusion coat 3 of the present invention as described above is based on the base layer 100 as the tack coating layer 20 is integrally fixed to the first low melting point fiber body 10 to be melted at a predetermined temperature The installation work of the tack coating 300 is made very simply by covering the cover to be in close contact with, and since the tack coating is constructed in a solid state, the surface layer work can be carried out immediately without laying the asphalt without curing period. At this time, there is no problem that the tack coating is stuck to the wheels of the installation equipment in the process of laying the asphalt, so there is no fear that the tack coating will be lost. As the fiber fusion coat 3 is melted, the base layer 100 and the surface layer 200 are fused to enhance the binding force and the adhesion strength, thereby improving the durability and service life of the asphalt.

Hereinafter, the manufacturing method of the fiber fusion coating 3 for tack coating according to the present invention will be described.

Step 1: providing a first, second low melting point fiber body in the form of a woven or non-woven fabric (S10);

The first and second low melting point fiber bodies 10 and 40 are copolyester-based compounds synthesized by the reaction of acids and alcohols to induce melting at 120 ° C. to 140 ° C. of the asphalt to be laid. (Copolyester) Select one or more of a resin, polyethylene (polyethylene), polypropylene (polypropylene), polyurethane (polyurethane) to be manufactured in the form of woven or non-woven fabric.

At this time, the first low melting point fiber body 10 has a weight of 80 to 280 g / m 2, a thickness of 0.40 to 0.80 mm, a tensile strength of 8 to 30 g / d, a tensile elongation of 15 to 75%, and an air permeability of 100 to 400 cc / cm 2 / sec. It is configured to have a condition of.

When the weight and thickness of the first low melting point fiber body 10 exceeds the property standard, the amount of impregnation of the asphalt emulsion increases, so that it is difficult to be melted by the paving temperature of the asphalt for the surface layer 200. When less than or equal to the amount of impregnation of the asphalt emulsion may be a little trouble in the function and role of the tack coating, the tensile strength is suitable strength for securing the adhesion when melting by tack coating between the base layer 100 and the surface layer 200 When the tensile elongation is exceeded, the layer to the fiber sheet may become thin, which is not suitable, and the elasticity is lowered below, which makes it difficult to apply even when covering, and the air permeability is difficult to evenly impregnated when asphalt is impregnated. At the time of construction, there may be a considerable effect on the infiltration or moisture-proof effect of foreign matter from the surface layer (200).

In addition, the second low melting point fiber 40 has a weight of 20 to 60 g / m 2, a thickness of 0.10 to 0.35 mm, a tensile strength of 2 to 6 g / d, a tensile elongation of 20 to 60%, and a breathability of 100 to 21 cc / cm 2 / It is configured to have a condition of sec.

When the weight and thickness of the second low-melting-point fiber body 40 exceeds the property standard, when the first low-melting-point fiber body 10 is thickened with the thicker it is difficult to melt within the asphalt laying temperature. On the contrary, the physical properties may not protect the first low melting point fibrous body 10, and the tensile strength of the second low melting point fibrous body 40 may lead to the deterioration of the adhesion force when it is exceeded. There is a risk of tearing, and the tensile elongation causes problems in the melting action and adhesion in the melting point when the first low-melting-point fiber body 20 is exceeded. There may be a problem, and the air permeability has a problem that may lower the moisture-proof function between the first low melting point fiber body 10 and the second low melting point fiber body 40 when it is above or below.

The physical property standards of the first and second low melting point fiber bodies 10 and 40 as described above allow the melting action due to a certain temperature between the base layer 100 and the surface layer 200, and impregnating and fixing the asphalt emulsion. The integrated structure of the tack coating layer 20 is formed to be made easily.

Step 2: manufacturing step (S20) of the low melting point fusion sheet formed by forming a tack coating layer and a hardening induction layer on the first low melting point fiber body;

1) Step of forming a tack coating layer on the first low melting point fiber (S20-1)

In order to form the tack coating layer 20 on the first low-melting-point fiber body 10, the tack coat composition 21 containing the asphalt emulsion as a main component is impregnated. To this end, the first low melting point fiber body 10 is first impregnated along the guide roll 400 in the impregnation tank in which the tack coat composition is accommodated.

The asphalt emulsion is selected from any one of RSC-O, RSC-1 RSC-3, RSC-4, the tack coat composition is 50 to 70% by weight asphalt emulsion, 20 to 40% by weight water, emulsifier 2 to 8% by weight It is made by mixing 0.1-1% by weight of the additive and 1-7.9% by weight of the regulator.

2) forming a hardening induction layer on the tack coating layer of the first low melting point fiber (S20-2)

The first low-melting-point fiber body 10 impregnated with the tack-coat composition 21 to induce a rapid curing action of the tack-coat composition 21 impregnated in the first low-melting-point fiber body 10 so as to be quickly fixed. Secondary impregnation in the impregnation tank in which the curing agent 31 is accommodated to form a hardening induction layer 30.

Here, the curing agent 31 may be selected from any of epoxy curing agents, RSC rapid curing agents, and enamel series, and impregnated with 0.2 to 3 l / m 2.

On the other hand, asphalt emulsion has hydrocarbons as a main component because it consists of residues of refined petroleum, and consists of lumps of liquid or semi-solids of bone degeneration, and has a viscous property that is pressed to a liquid state by heating at room temperature. Because of its strength, it is difficult to cure in practice and undergo a substantial curing period.

That is, it is difficult to solidify to have a 72-hour curing time after spraying the tack coating (0.3 ℓ / ㎡-0.6 ℓ / ㎡ per 1 square meters sprayed on the basis of the Ministry of Land, Infrastructure, Transport and Transport specifications as per the basis of the spray amount) during construction of the asphalt pavement.

Accordingly, in the present invention, the formation of the hardening induction layer 30 added to quickly fix the tack coating layer 20 by the tack coat composition 21 on the first low melting point fiber body 10 plays an important role.

3) Dryer Drying Step (S20-3)

The tack coating layer 20 impregnated in the first low melting point fiber body 10 is passed directly through the dryer drying apparatus 500 in order to more effectively perform the curing action by the curing induction layer 30.

In this case, the dryer drying apparatus 500 may be equipped with a polymerization type dryer or an oxidizing dryer, and among the alcohol-based ethanol, methanol, and ether-based ethylene, having a purity of 75% or more as a dryer dryer. The dryer method is to select any one and to dry in low temperature 0-2 degreeC or less.

4) completion step of the low melting point fusion sheet (S20-4)

After impregnating the tack-coating layer 20 and the hardening induction layer 30 in the transfer process of the first low-melting-point fibrous body 10, the bulk 20 to 360g / m 2, the surface by going through a batch process to the dryer drying process, the surface The low melting point fusion sheet 1 having a strength of 5H or less and an elongation of 15 to 75% is completed.

Step 3: forming a low melting point moisture barrier layer on the low melting point fusion sheet (S30);

The low melting point moisture barrier layer 2 is formed by integrally combining the second low melting point fiber body 40 with the adhesive roller 600 with the adhesive on the completed low melting point melting sheet 1.

The low-melting-moisture-proof layer (2) is caused to prevent the penetration of moisture into the low-melting-point fusion sheet (1) by making the melting while absorbing the moisture generated when melting at a predetermined temperature.

According to the manufacturing step as described above to complete the tack coating fiber fusion coat (3) to solidify the tack coating 300 in the form of a sheet, the tack coating fiber fusion coat (3) is melted at the temperature of the asphalt laid By closely fusion between the base layer 100 and the surface layer 200 it is possible to enhance the binding force and the adhesion strength.

Hereinafter, a description will be given of the asphalt paving method using the fiber fusion coating (3) for tack coating according to the present invention.

Fiber fusion coating (3) for the tack coating according to the present invention configured as described above can be carried out very easily tack coating construction.

Covering the tack coating fiber fusion coat 3 on the surface of the base layer 100 to be in close contact, the construction of the tack coating 300 is simply completed.

Such construction is because the tack coating 300 is made in the form of a solidified sheet, there is no need for a heating device and a coating device for liquid coating as in the prior art.

And since it is already cured, it is possible to directly lay asphalt for surface layer formation on the tack coating fiber fusion coat (3) without requiring any curing period.At this time, the tack coating on the asphalt laying equipment and the wheels of construction vehicles Since it does not stick, there is no fear of losing the tack coating.

And while the tack coating fiber fusion coat (3) is melted by the 120 ° C temperature of the asphalt laid on the tack coating fiber fusion coat (3) and at the same time acts to close fusion between the base layer 100 and the surface layer (200) By strengthening the binding force and the adhesion strength between the base layer 100 and the surface layer 200 to maximize the durability and service life of the asphalt.

Thus, by the construction method using the tack coating fiber fusion coat (3) according to the present invention it is possible to drastically shorten the work time required for the packaging construction due to the need for a separate curing period.

In addition, the fiber fusion coating (3) for the tack coating according to the present invention is configured to be a solid sheet type, so that the use of the fiber fusion coat (3) by cutting the size of the repair section when the road repair is required, such as part of the port hole As a result, it is possible to perform tack coating during the repair of sections such as portholes, thus making it more robust and robust.

In addition, according to the tack coating for tack coat (3) of the present invention, unlike the tack coating carried out in a liquefied state, it does not need to be cured, so that the tack coating can be carried out at 5 ° C. or lower, and the asphalt road construction is carried out in addition to a small amount. Even in rainy weather can provide the advantage that the asphalt construction is possible without limitation.

As described above in the detailed description of the present invention has been described with respect to the most preferred embodiment of the present invention, various modifications may be made within the scope not departing from the technical scope of the present invention, the protection scope of the present invention is therefore Not limited to the examples, the scope of protection from the description of the claims and the equivalent technical means to those described below will be recognized.

The present invention is to prevent the loss of the tack coating during asphalt paving work to exhibit the original function and to shorten the construction time by enabling the asphalt installation work immediately after the tack coating process on the base surface, without a separate curing process It can be used industrially.

Claims (9)

1. A low melting point fusion sheet 1 formed of a woven or nonwoven fabric in which the tack coating layer 20 is integrally fixed by impregnating an asphalt emulsion into the first low melting point fiber body 10 melted at a predetermined temperature;

   The low melting point moisture barrier layer 2 formed by combining the second low melting point fiber body 40 with the low melting point melting sheet 1 so as to absorb moisture generated when the low melting point melting sheet 1 melts and to supplement moisture resistance and waterproofness. ),

   After covering the solidified tack coating on the base layer 100, a fiber fusion coating for tack coating, characterized in that the asphalt laying for the surface layer 200 is configured to be made immediately.
2. The method according to claim 1,

   The tack coating layer 20 of the low melting point fusion sheet 1 is composed of a tack coat composition composed mainly of asphalt emulsion selected from any one of a bituminous material RSC-O, RSC-1 RSC-3, RSC-4,

   The tack coat composition is 50 to 70% by weight asphalt oil, 20 to 40% by weight water, 2 to 8% by weight emulsifier, 0.1 to 1% by weight additives, 1 ~ 7.9% by weight of the modifier for Fiber Fusion Coat.
3. The method according to claim 2,

   The low melting point fusion sheet 1 further includes a hardening induction layer 30 by a hardener to induce hardening of the tack coating layer 20 and to easily adhere to the first low melting point fiber body.

   The curing agent is a tack coating fiber fusion coating, characterized in that made of any one of epoxy curing agents, RSC rapid curing agent, enamel series.
4. The method according to claim 1,

   The first low melting point fiber body 10 has a weight of 80 to 280 g / m 2, a thickness of 0.40 to 0.80 mm, a tensile strength of 8 to 30 g / d, an elongation of 15 to 75%, and an air permeability of 100 to 400 cc / to facilitate the impregnation of the asphalt emulsion. Consists of cm 2 / sec properties,

   The second low melting point fiber body 40 is 20 to 60 g / m 2, a thickness of 0.10 to 0.35 mm, a tensile strength of 2 to 6 g / d, and a tensile elongation of 20 to 60 so as to be thinly laminated to the low melting point fusion sheet 1 for waterproofing. %, Tack coating fiber fusion coating, characterized in that consisting of 100 ~ 21cc / ㎠ / sec physical properties.
5. A step of providing the first and second low melting point fiber bodies in the form of a woven or nonwoven fabric having a low melting point fiber melted at a predetermined temperature (S10);

   A step (S20) of manufacturing a low melting point fusion sheet having a tack coating layer and a hardening induction layer formed on a first low melting point fiber body;

   Comprising the second low-melting-point fiber body to form a low-melting-point moisture-resistant layer on the low-melting-point fusion sheet to complement the water resistance of the low-melting point fusion sheet (S30);

   The step (S20) is a step of forming a tack coating layer on the first low melting point fiber body impregnating a tack coat composition mainly composed of an asphalt emulsion while guiding the first low melting point fiber body (S20-1), and the first Composition of hardening induction layer in the tack coating layer of the first low melting point fibrous body in which the first low melting point fibrous body is impregnated with the curing agent to impregnate the first low melting point fibrous body impregnated with the tack coat composition so as to induce rapid curing action Step (S20-2), the drying step (S20-3) and the drying step of drying the tack coating layer of the first low melting point fiber body by the action of the curing induction layer (S20-3) (S20) -4),

   According to the manufacturing step of S10 ~ S30 Covering installation on the base layer to produce a tack coating fiber fusion coating for coating characterized in that it can be produced as a finished product solidified in a sheet form.
6. The method according to claim 5,

   The first and second low melting point fiber bodies 10 and 40 are copolyesters synthesized by the reaction of acids and alcohols to melt at 120 ° C. to 140 ° C. of the asphalt to be laid. Resin, polyethylene (polyethylene), polypropylene (polypropylene), Polyurethane (polyurethane) by selecting any one of the woven coating or non-woven fabric manufacturing method of the tack coating, characterized in that the manufacturing method.
7. The method according to claim 5,

   In the dryer drying step (S20-3), after forming a tack coating layer and a hardening induction layer on the first low melting point fiber body, the drying device made of a polymerization type dryer or an oxidizing type dryer is called.

   As a dryer desiccant, one of the alcohol-based ethanol, methanol, and ether-based ethylene, which is 75% or more pure, is selected and dried at a low temperature of 0 to 2 ° C. Method for producing a fiber fusion coat.
8. The tack coating 300 is formed by covering the tack coating fiber fusion coat 3 on the surface of the base layer 100 by using the tack coating fiber fusion coat 3 of claim 1.

   After covering the tack coat fiber fusion coat 3 to the base layer 100, the asphalt layer for the surface layer is formed immediately above the tack coating fiber fusion coat (3) without any curing step Asphalt pavement method using fiber fusion coat for tack coating.
9. The method of claim 8,

   The asphalt pavement method using a fiber fusion coating for tack coating, characterized in that when the road repair is necessary, the fiber fusion coating (3) is cut by the size of the repair section to the tack coating.

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