KR101803831B1 - Packaging asphalt reinforcing material and manufacturing method thereof asphalt containing low melt fiber - Google Patents

Abstract

The present invention relates to an asphalt reinforcing material for asphalt pavement and a method of manufacturing the same. More specifically, the present invention relates to an asphalt reinforcing material for asphalt pavement, To an asphalt reinforcing material for asphalt pavement comprising a low melting point fiber and a method for producing the same.
The present invention provides an asphalt reinforcement disposed between a first asphalt layer and a second asphalt layer, the asphalt reinforcement comprising: a fiber grid layer composed of at least one of glass fiber, carbon fiber and polyester fiber; And a low melting point fiber layer formed on at least one of upper and lower portions of the fiber grid layer and made of low melting point fibers melted at 90 to 130 DEG C. The low melting point fiber layer is composed of a first low Melting point fiber layer and a second low-melting-point fiber layer provided on a lower portion of the fiber grid layer, wherein the first low-melting-point fiber layer is nonwoven and the second low-melting-point fiber layer is lattice or woven.
Accordingly, it is possible to prevent the loss of adhesion between the first asphalt layer and the second asphalt layer by melting at a low temperature without being affected by the surrounding environment, and to sufficiently secure the adhesive force and to prevent the first and second It enhances the waterproof function, strengthens the bonding force between the fibers, stably maintains the shape of the asphalt reinforcement, prevents the tack coat layer from being lost, removes foreign matter, prevents sticking during installation and prevents damage to the equipment. Therefore, it is possible to shorten the time to increase the efficiency of the work and to form the low-melting-point fibrous layer integrally at the upper and lower portions of the fibrous grid layer as the asphalt reinforcement material. It is possible to improve the function of the road and to extend the life of the road.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to asphalt reinforcing materials for asphalt pavement comprising low melting point fibers,

The present invention relates to an asphalt reinforcing material for asphalt pavement and a method of manufacturing the same. More specifically, the present invention relates to an asphalt reinforcing material for asphalt pavement, To an asphalt reinforcing material for asphalt pavement comprising a low melting point fiber and a method for producing the same.

Generally, road pavement refers to concrete pavement or asphalt pavement. Among them, asphalt pavement refers to a road covered with sand, stone, crushed stone and asphalt by heating / mixing. The curing period is shorter than concrete pavement , It is easy to construct, and it is not only comfortable to ride because of noise reduction due to driving, but also low maintenance, so that it is used in most road paving work.

However, the asphalt pavement has a relatively short life span, low adaptability to the vehicle, it is difficult to maintain the temperature management due to seasonal climate change, calcium chloride penetration, poor asphalt mixture, Tack coat layer failure, road deformation due to traffic volume, and various cracks.

In particular, seasonal climate change and calcium chloride used in the winter season are directly responsible for the depression of the road, that is, the photohole.

Meanwhile, the importance of the tack coat layer preventing the penetration of water, securing the interlayer adhesion, and preventing the penetration of foreign matter has been attracting attention as a concern. However, due to the loss of tack coat layer due to the installation equipment during the asphalt pavement, Not only deteriorate waterproofing function, but also prevent the tack coat layer from acting as a foreign matter, thus shortening the life of the road.

In order to solve this problem, asphalt reinforcing materials using various kinds of fibers (for example, glass fiber, carbon fiber, aramid fiber and polyester fiber) have been developed, and the shear capacity and tensile capacity have been enhanced, It is expected that it will be able to make comfortable driving.

In addition, conventional asphalt reinforcing materials have been disclosed to impregnate amulsion, ramex and hot melt adhesives to increase the rigidity of asphalt while protecting the tack coat layer. However, it is not dissolved in the laying temperature but requires a separate heating device As well as sticking to the wheel of the installation equipment due to stickiness.

As a result, it is troublesome to spray the emulsifier with a separate sprayer on the wheel, and it is necessary to wait until the tack coat layer is completely cured, thereby delaying the paving work, thereby wasting unnecessary time, There were many difficulties.

In order to compensate for this, a film produced by adding an inorganic substance to a polyethylene film and a polyethylene composition was proposed in "a breathable polyethylene film for asphalt paving construction and an asphalt reinforcing material containing the same (registration number: 10-1427375)". In the case of a polyethylene film, And there was a problem that it had to be burned by a separate heating device.

In addition, there is a risk of fire due to a separate heating device, and it is difficult to completely melt the film due to the influence of the wind, resulting in poor working efficiency. In order to bind the film, a separate coating (or adhesive) However, this is problematic in that it is very sticky, causes difficult problems in installation equipment, and is not easy to move and store, so that a lot of manpower is required.

In addition, when a film to which an inorganic substance is added to a polyethylene composition is used, it dissolves at an asphalt average temperature of 140 캜 or lower, but is not completely dissolved.

Therefore, despite the fact that the average temperature of the ascon is always kept constant during the pavement construction, it is sensitive to the surrounding variables such as the average pavement temperature of the ascon, the average temperature of the ascon transport, It is not easy to meet a certain melting point.

This means that it is practically difficult to keep the melting point temperature constant since the film to which the inorganic substance is added to the polyethylene composition is fused only when the temperature of the melting point is kept constant.

If the temperature of the melting point is not kept constant, the film may be shrunk to cause foreign matter to be entangled in the fiber. In the case of using a film in which an inorganic substance is added to the polyethylene composition, The expected value as an asphalt reinforcement can be reduced and it is almost useless in terms of recycling.

As a result, it can be used as an adhesive fiber which can be used instead of an adhesive to melt at a low melting temperature, thereby reinforcing the bonding force between fibers, thereby fulfilling the function as a reinforcing material. In addition, asphalt- It is a time when there is a desperate need for research and development of a method for manufacturing a reinforcing material.

Korean Registered Patent No. 10-1427375, July 31, 2014.

Disclosure of the Invention The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a low-melting-point fiber which can melt at a low temperature to be easily adhered and has a fiber grid layer and a low- And a method of manufacturing the asphalt reinforcement for asphalt pavement.

According to an aspect of the present invention, there is provided an asphalt reinforcement disposed between a first asphalt layer and a second asphalt layer, the asphalt reinforcement comprising: a fiber grid layer composed of at least one of glass fiber, carbon fiber and polyester fiber; And a low melting point fiber layer formed on at least one of the upper and lower portions of the fiber grid layer and made of low melting point fibers melted at 90 to 130 DEG C, Wherein the first low melting point fiber layer is a nonwoven fabric and the second low melting point fiber layer is a lattice or woven fabric layer. The present invention relates to an asphalt reinforcing material for asphalt pavement comprising low melting point fibers.

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Preferably, the fibrous grid layer, the first low melting point fiber layer and the second low melting point fibrous layer are integrally formed so as to increase the bonding force between the fibers.

Preferably, the fibrous grid layer is in a lattice form in which the warp yarns and the weft yarns intersect each other, and the crossing portions where the warp yarns and the weft yarns intersect each other are bound to binding members made of low melting point fibers.

Preferably, the low melting point fiber layer is a breathable woven fabric or nonwoven fabric having a density of 12 to 55 g / m < 2 >.

On the other hand, in the above-described method of manufacturing an asphalt reinforcement material, a low melting point fiber composed of low melting point fibers melted at 90 to 130 占 폚 is formed on upper and lower portions of a fiber grid layer composed of at least one of glass fiber, carbon fiber and polyester fiber Wherein the low melting point fiber layer is composed of a first low melting point fiber layer provided on the upper portion of the fiber grid layer and a second low melting point fiber layer provided on the lower portion of the fiber grid layer, And the second low melting point fibrous layer is in the form of a lattice or a woven fabric. The present invention also provides a method for manufacturing an asphalt reinforcing material for asphalt pavement comprising low melting point fibers.

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According to the present invention, there is provided an asphalt reinforcing material for asphalt pavement comprising a low melting point fiber according to the present invention and a method for producing the same, wherein the asphalt reinforcing material is melted without being affected by the surrounding environment at a low temperature to form a first asphalt layer and a second asphalt layer It is possible to prevent the loss of the adhesion force of the adhesive layer and to secure an adequate adhesive force.

Second, the primary and secondary waterproofing functions according to the prevention of moisture penetration are expanded and the binding force between the fibers is strengthened, so that the shape of the asphalt reinforcement material can be stably maintained.

Thirdly, there is an effect that the tack coat layer is prevented from being leaked, foreign matter is removed, and stickiness is prevented at the time of laying construction, thereby preventing damage to the equipment and eliminating troubles in construction.

Fourth, there is no need to wait until the tack coat layer is hardened, so that the time can be shortened and the efficiency of the work can be increased.

Fifth, by integrally forming low-melting-point fiber layers on the upper and lower portions of the fibrous grid layer, the function as the asphalt reinforcement can be improved and the average life of the road can be extended.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view of an asphalt reinforcement according to a preferred embodiment of the present invention. FIG.
2 is an exploded perspective view according to a preferred embodiment of the present invention;
3 is a schematic view of an asphalt reinforcement according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view illustrating an asphalt stiffener 300 according to a preferred embodiment of the present invention. Referring to FIG. 1, it can be seen that the asphalt pavement construction method using the asphalt reinforcement 300 is shown.

That is, after cleaning the second asphalt layer 100 (or the asphalt substrate, the concrete substrate, the cut / ground asphalt substrate, and the lower surface layer), the tack coat layer 200 is formed using the application equipment, It can be seen that the asphalt reinforcing material 300 for asphalt pavement containing the low melting point fiber is attached and the pavement is completed by packing the first asphalt layer 400 as the new asphalt.

2 is an exploded perspective view according to a preferred embodiment of the present invention. Referring to FIG. 2, the asphalt reinforcement 300 may be composed of a fiber grid layer 310, a low melting point fiber layer 320, and an adhesive layer 330.

The asphalt reinforcement 300 is installed on the tack coat layer 200 to protect the tack coat layer 200, prevents moisture from penetrating the ground, removes foreign matter, So that the adhesive force can be secured.

The fiber grid layer 310 of the present invention serves to increase the durability of the asphalt pavement with excellent tensile strength. The fibrous grid layer 310 is made of fiberglass, carbon fiber and polyester to disperse the traffic congestion vertically / horizontally and improve tensile and stress And fibers.

Especially, glass fiber has flexibility, lightness, strength, and excellent process ability. It can prevent long-term cracking due to extremely high tensile strength of glass fiber, prevent wheel trajectory and shear deformation, And a reduction in the thickness of the pavement due to the expansion.

Preferably, the fibrous grid layer 310 is formed in a lattice shape in which the first fibrous rib 312 and the second fibrous rib 314, which are wefts, cross each other. This is for maintaining the strength of the asphalt reinforcement 300, and it is possible to secure the rigidity of the asphalt reinforcement 300.

The gap between the weft and the weft, which is the first fiber rib 312, is in the range of 12 to 25 mm as seen in FIG. 2 (a), and the interval between the warp and the warp, which is the second fiber rib 314, it is preferable that the thickness is in the range of 12 to 25 mm as shown in FIG.

As a result of the experiment, if the gap between the weft and the weft and the gap between the inclination and the inclination is less than 12 mm, it is difficult to roll the binding member 316 because the gap is too dense. It is difficult to maintain the strength of the fiber 310 and tearing of the fiber tends to occur.

The binding member 316 of the present invention has a structure in which the first fiber rib 312 and the second fiber rib 314 are bonded to each other at an intersection where the first fiber rib 312 and the second fiber rib 314 intersect with each other.

The bundling member 316 binds the contact point where the first fiber rib 312 and the second fiber rib 314 intersect to stably maintain the lattice shape of the fiber grid layer 310, Melting point fiber to be melted at a temperature lower than the melting point.

For reference, when the fineness of the binding member 316 made of the low melting point fibers is less than 90 denier, the first fiber rib 312 and the second fiber rib 314 are less stable in binding strength. If the fineness is less than 300 denier, It is preferable that the thickness of the binding member 316 is in the range of 90 to 300 denier since no more excellent effect is obtained as compared with the case of using the binding member 316 of the same thickness.

However, the weight and thickness of the low melting point fiber applied to the binding member 316 described above are not particularly limited and can be appropriately changed according to the manufacturing process.

The low melting point fiber layer 320 of the present invention is installed to be formed on at least one of the upper and lower portions of the fiber grid layer 310 so that the adhesion force between the second asphalt layer 100 and the first asphalt layer 400 And is made of only low-melting-point fibers for preventing water penetration.

The reason why the low melting point fiber is applied to the present invention is to enhance the function of the asphalt reinforcement 300. In order to solve the difficulties due to the influence of the surrounding climate or maintenance of the constant temperature during the installation, , And to combine the technology of adhesive fibers that do not require chemicals.

That is to say, since the low-melting-point fibers are melted at a temperature of 100 ° C. by using a fiber capable of producing a product at a required temperature, for example, melting at 100 ° C., it is not necessary to maintain the temperature at a constant temperature. It is possible to shorten the time.

In other words, the low-melting-point fibers are melted at 140-160 ° C, which is the average temperature of the asphalt pavement, even though they are not sensitive to changes in the surrounding environment. As a result, the adhesion strength between the fiber grid layer 310 and the low- The bonding layer 200 can be protected and the shape of the fiber grid layer 310 can be maintained to strengthen the bonding force.

The low melting point fiber layer 320 made of only the low melting point fibers is intended to strengthen the stress and the strength of the fiber grid layer 310 and shortens the waiting time until the tack coat layer 200 is fully cured and reduces the time So that the inconvenience at the time of work can be solved.

That is, since the low-melting-point fiber layer 320 is melted at a low temperature, a separate heating device is not necessary, thereby reducing the loss of human power, securing the adhesive strength as the adhesive fiber, and naturally melting at low temperatures. It is environmentally friendly.

However, the plane density of the low melting point fiber layer 320 may be in the form of a nonwoven fabric or a woven fabric having a flat density of 55 g / m 2 or less. That is, the weight of the low melting point fiber layer 320 is preferably 12 to 55 g The stress and the strength of the fiber grid layer 310 are insufficient to enhance the strength and the strength and strength of the fiber grid layer 310 can be strengthened if it exceeds 55 g However, since the amount of the low melting point fiber layer 320 to be melted later is increased, the weight of the low melting point fiber layer 320 is preferably 12 to 55 g per m < 2 >.

The low melting point fiber layer 320 of the present invention can be installed at the center of the fiber grid layer 310. The first low melting point fiber layer 322 is formed only of the low melting point fiber layer, And a second low melting point fiber layer 324 made of only a fiber can be formed.

Since the first low melting point fiber layer 322 and the second low melting point fiber layer 324 are formed on the upper and lower portions of the fiber grid layer 310 as described above, the tack coat layer 200 and the ascon can be prevented from sticking It is possible to prevent the failure of the installation equipment, and it is possible to simplify the construction work by reducing the unnecessary waste of manpower, which is advantageous from the economical point of view.

The first low melting point fiber layer 322 is made of only low melting point fibers and adheres to the upper portion of the fiber grid layer 310 via the adhesive layer 330. The first low melting point fiber layer 322 is located below the first asphalt layer 400 It is preferable that the nonwoven fabric is formed in such a manner as to enhance adhesion with the first asphalt layer 400 by combining the first water permeation prevention function and the waterproof function from the upper part.

As a result of myriad experiments, it has been found that the first low melting point fiber layer 322 is a nonwoven fabric composed only of low melting point fibers, so that the adhesion with the first asphalt layer 400 is improved, It was confirmed that the adhesion of

The second low melting point fiber layer 324 is made of only low melting point fibers and is bonded to the lower portion of the fiber grid layer 310 via the adhesive layer 330 to prevent foreign matter from being caught, Thereby protecting the tack coat layer 200.

In other words, the second low melting point fiber layer 324 prevents loss of the tack coat layer 200 and prevents secondary water penetration through the first low melting point fiber layer 322, It is preferable that the low-melting-point fibers are formed in a lattice form or a woven form in which the low-melting-point fibers cross each other so as to secure the adhesion to the substrate 100. However, it is most preferable that it is in a lattice form.

As a result, the weft yarns and the warp yarns constituting the second low melting point fiber layer 324 are low melting point fibers. Referring to FIG. 2C, it can be seen that the intervals are in the range of 5 to 10 mm.

As a result of the experiment, only when the gap between the weft and the warp constituting the second low melting point fiber layer 324 of the present invention is in the range of 5 to 10 mm, the second low melting point fiber layer 324 is formed in the lattice of the fiber grid layer 310 And finally the road pavement aggregate is limited in the longitudinal or lateral movement by the load of the vehicle, so that the plastic deformation is minimized, and fatigue cracks and reflection cracks are prevented.

If the gap between the weft and the warp constituting the second low melting point fibrous layer 324 is less than 5 mm, the time required for the production is prolonged and the productivity is low. On the contrary, if the gap is larger than 10 mm, And the physical properties of the asphalt reinforcement 300 are poor.

In addition, as can be seen from the above description, it can be seen that the lattice spacing between the weft and the warp constituting the second low melting point fiber layer 324 is relatively smaller than the lattice spacing between the weft and the warp constituting the fiber grid layer 310 have. This is because the weft yarns and the warp yarns constituting the second low melting point fibrous layer 324 are positioned in the space between the lattice spaces of the fibrous grid layers 310 having a relatively large lattice spacing to improve the strength of the asphalt reinforcement 300 Indicating excellent physical properties.

Accordingly, the first low melting point fibrous layer 322 has a nonwoven fabric structure and the second low melting point fibrous layer 324 has a lattice form, thereby fulfilling its role as an asphalt reinforcing material 300 for asphalt packaging.

The first low melting point fiber layer 322 in the form of a nonwoven fabric and the second low melting point fiber layer 324 in the form of a lattice protect the upper and lower portions of the fiber grid layer 310 and thus the binding force of glass fibers, So that the shape of the grid-shaped fiber grid layer 310 can be maintained. As a result, it is effective for strengthening the stress and strength.

As a summary, the low melting point fiber layer 320 can be utilized as an adhesive fiber to select a low melting point fiber which can be fused at 90-130 ° C., which is lower than the average installation temperature of 130-160 ° C. during the installation of the asphalt pavement .

In addition, a flake crystal of CCP or OCP including air permeability or non-air permeability may be selected and used as the nonwoven fabric first low melting point fiber layer 322 and the lattice or woven second low melting point fiber layer 324 .

However, the melting point of the low melting point fibers is measured on a planar surface where the temperature can be controlled. The use of the weight, length and thickness of the low melting point fiber of the present invention can be variously changed depending on conditions.

The low melting point fiber of the present invention is a copolyester resin synthesized by the reaction of acids and alcohols and has a characteristic of melting at a low temperature.

That is, the acids are composed of 40 to 50 mol% of terephthalic acid and 50 to 60 mol% of isophthalic acid, and the alcohols are composed of butanediol and include polyethylene glycol (polyethylene glycol) polyester) to form a copolyester resin.

Terephthalic acid is a polycarboxylic acid, which may include isophthalic acid. If the content of terephthalic acid is less than 40 mol%, the reaction with isophthalic acid is poor. If the content of terephthalic acid exceeds 50 mol%, excessive use of polycarboxylic acid may lower the workability.

Isophthalic acid is used for improving the bonding strength at low temperature with terephthalic acid, and may be contained in an amount of 50 to 60 mol%. If the isophthalic acid content is less than 50 mol%, it can not contribute to the improvement of the required adhesive strength. If the content exceeds 60 mol%, the melting point of the copolyester-based resin is lowered and it is difficult to secure the low heat resistance and shape stability.

Butanediol may be included in a molar ratio of 1: 1 to 2 relative to the acids. The adhesive strength can be further improved. It was found that when the butanediol is in a molar ratio of 1: 1 to 2 with respect to the acids, high strength and shape stability are imparted to the low melting point fibers in the production thereof. If the amount is less than 1 molar, the reactivity is lowered and the degree of polymerization is also lowered. When the molar ratio is more than 2 mol, the workability is remarkably lowered due to side reaction products.

The polyester contains polyethylene glycol, and the polyethylene glycol contains 10 to 15 mol% based on the polyester, so that the dispersion can be performed well. However, when the content of polyethylene glycol is less than 10 mol%, the dispersion is poor and the physical properties of the low melting point fiber are deteriorated. When the content of polyethylene glycol is more than 15 mol%, there is also a problem in dispersion and the physical properties of the low melting point fiber are deteriorated. .

The adhesive layer 330 of the present invention is configured to adhere the first low melting point fiber layer 322 and the second low melting point fiber layer 324 formed on the upper and lower portions of the fiber grid layer 310, respectively.

That is, the adhesive layer 330 is for bonding the first low melting point fiber layer 322 on the upper side and the second low melting point fiber layer 324 on the upper side with the fiber grid layer 310 as a center, , Impregnation with enamel, impregnation with a primer of resin-based and asconone, impregnation with emulsified ascon, and water-soluble bond.

In particular, the adhesive layer 330 may be a means for integrating the fiber grid layer 310, the first low melting point fiber layer 322 and the second low melting point fiber layer 324, Melting point fiber layer 322, the second low-melting-point fiber layer 324, and the fiber grid layer 310 are integrally formed.

In the present invention, it is described that the fiber grid layer 310, the first low melting point fiber layer 322 and the second low melting point fiber layer 324 can be integrally formed through the adhesive layer 330. However, The first low melting point fiber layer 322 and the second low melting point fiber layer 322 themselves serve as adhesive fibers capable of melting even at a low temperature and thus the fiber grid layer 310, The low melting point fiber layer 324 can be integrated.

On the other hand, the asphalt reinforcing material 300 for asphalt pavement comprising the low-melting-point fiber according to the above-described method is formed of a low-melting-point fiber at the upper and lower portions of the fiber grid layer 310 made of at least one of glass fiber, carbon fiber and polyester fiber And the low melting point fiber layer 320 are integrally formed.

3 is a schematic view of an asphalt stiffener 300 according to a preferred embodiment of the present invention. 3, a second low melting point fiber layer 324, an adhesive layer 330, a fiber grid layer 310, an adhesive layer 330 and a first low melting point fiber layer 322 are stacked in order, It can be seen that the process of forming them integrally is schematically shown.

However, this manufacturing method includes all the technical contents according to the asphalt pavement asphalt stiffener 300 including the above-mentioned low melting point fibers, and the further explanation will be omitted here.

INDUSTRIAL APPLICABILITY As described above, the present invention can prevent adhesion loss between the first asphalt layer (400) and the second asphalt layer (100) by melting at a low temperature without being affected by the surrounding environment, The shape of the asphalt reinforcement 300 can be stably maintained.

In addition, it is possible to prevent loss of tack coat layer 200, remove foreign matter, and prevent stickiness during laying construction, thereby preventing damage to the equipment and eliminating hassle in construction.

In addition, since the tack coat layer 200 does not have to wait for curing, the time can be shortened and the efficiency of the work can be increased.

In addition, by forming the low melting point fiber layer 320 on the upper and lower portions of the fiber grid layer 310, the function as the asphalt reinforcement 300 can be improved and the average lifetime of the road can be extended.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention may be embodied otherwise without departing from the spirit and scope of the invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to illustrate them, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the claims, and all technical ideas within the scope of the claims should be construed as being included in the scope of the present invention.

100: second asphalt layer
200: tack coat layer
300: Asphalt reinforcement
310: fiber grid layer
312: first fiber rib
314: second fiber rib
316:
320: low melting point fiber layer
322: first low melting point fiber layer
324: second low melting point fiber layer
330: adhesive layer
400: first asphalt layer
R: Rollers

Claims (7)

An asphalt reinforcement disposed between a first asphalt layer and a second asphalt layer,
A fiber grid layer composed of at least one of glass fiber, carbon fiber and polyester fiber; And
And a low melting point fiber layer formed on at least one of upper and lower portions of the fibrous grid layer and made of low melting point fibers melted at 90 to 130 DEG C,
The low-melting-
A first low melting point fiber layer disposed on the fiber grid layer and a second low melting point fiber layer disposed on a lower portion of the fiber grid layer,
The first low melting point fiber layer is in the form of a nonwoven fabric,
Wherein the second low melting point fibrous layer is in the form of a lattice or a woven fabric. The asphalt reinforcement for asphalt pavement comprising low melting point fibers. delete The method according to claim 1,
The fibrous grid layer, the first low melting point fiber layer,
Wherein the low-melting-point fiber is integrally formed so as to increase bonding force between the asphalt fibers. The method according to claim 1,
Wherein the fiber grid layer comprises:
The first fiber rib and the second fiber rib being in a lattice form intersecting with each other,
Wherein the cross-section where the first fiber rib and the second fiber rib cross each other is bound to a binding member made of low melting point fibers. The method according to claim 1,
The low-melting-
Characterized in that it is an air-permeable woven fabric or nonwoven fabric having a density of 12 to 55 g / m < 2 > and asphaltene reinforcement for asphalt pavement comprising low melting point fibers. A method of manufacturing an asphalt reinforcement according to any one of claims 1 and 5,
A low melting point fiber layer made of low melting point fibers melted at 90 to 130 占 폚 is integrally formed on upper and lower portions of a fiber grid layer composed of at least one of glass fiber, carbon fiber and polyester fiber,
The low-melting-
A first low melting point fiber layer disposed on the fiber grid layer and a second low melting point fiber layer disposed on a lower portion of the fiber grid layer,
The first low melting point fiber layer is in the form of a nonwoven fabric,
Wherein the second low melting point fiber layer is in the form of a lattice or a woven fabric. delete

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