KR101684216B1 - Asphalt seal coating composition - Google Patents

Abstract

The present invention relates to an asphalt seal coating composition comprising 25-40 wt% of an asphalt binder, 12-25 wt% of nanoclay, 0.1-3 wt% of a surfactant, and 32-62.9 wt% of purified water. The asphalt seal coating composition has excellent chemical resistance, UV blocking properties, moisture resistance, impact resistance, and thermal resistance, and thus prolongs the lifespan of an asphalt road. Also, the asphalt seal coating composition makes the appearance of a road beautiful, and reinforces the road, thereby reducing maintenance costs of the road.

Description

[0001] ASPHALT SEAL COATING COMPOSITION [0002]

The present invention relates to an asphalt seal coating composition, and more particularly to an asphalt seal coating composition capable of extending the life of an asphalt road.

Generally, road pavement consists of asphalt pavement or asphalt concrete pavement mixed with asphalt and concrete.

However, roads packed with concrete, asphalt, etc. Are changed from ductility to hardness by ultraviolet rays, and the cracks are caused by the increase in the number of vehicles driving on the roads and the aging of the roads.

This road surface accelerates crack progression due to changes in temperature and precipitation due to seasonal changes.

In order to maintain the asphalt for a long time, it is preferable that the surface coating is carried out by using a tar coating agent or an emulsifying asphalt coating agent in order to prevent a defect in advance.

Roads use large aggregates on the foundation and small aggregates are used on the auxiliary foundation. Since the aggregates used for road installation are closely related to water, they expand and swell by water when water permeates, so they maintain the function of asphalt road In order to do this, moisture should not penetrate the foundation and auxiliary base during the summer and winter.

To do this, asphalt concrete should be laid on the finish layer when new roads are established to prevent water from penetrating into the foundation and auxiliary base. Although asphalt concrete is excellent in water resistance, it has a disadvantage that weatherability and chemical resistance are weak.

Asphalt roads may require maintenance due to cracks, cracks, pot holes, turtles, cracks and road subsidence.

Ultraviolet rays and oxidation also destroy the physical properties of the binder that holds the aggregate and the aggregate, creating a bone between the aggregate and the aggregate, and causing a crack in the seal.

As the primary cracks occur, the water penetrates to deteriorate the adhesion of the aggregates, and the aggregates are separated. If the phenomenon further progresses, the surface of the road gradually receives large damage and causes maintenance.

In particular, snow removers and anti-freeze compounds are the main causes of asphalt damage.

Asphalt crack types include cracks such as turtles cracking in the longitudinal cracks and transverse cracks in the first crack cracks, and bituminous materials such as asphalt and packing tar on cracks generated in the aging of the asphalt roads. However, Reflective cracks that cause cracks on the surface of the seats. Port holes where deep holes are formed in the concave or broken parts of the bedrock in the upper ground due to crevices in the bedrock, mainly due to the load of cars on the asphalt, And road pressing phenomenon such as a scorching phenomenon.

When the asphalt road collapses, first, the finish layer is damaged by vehicle passing, petroleum compounds, ultraviolet rays, snow remover, etc. Therefore, the binder detaches from the asphalt and the adhesive force is lost, As the surface seal crack progresses, due to moisture penetration, the foundation is damaged, settlement occurs, cracks become more serious, and water penetration is intensified, so that the base and auxiliary base are damaged and can be settled by the load when the vehicle is passing.

The time required for repacking is usually 6 to 7 years after the asphalt pavement, which is relatively short.

That is, the asphalt binder on the surface portion of the asphalt concrete road is frequently worn by the passage of the vehicle, which causes the aggregate to be detached, proceeding to a seal crack, and gradually spreading to a large crack.

As a result of this crack, the snowmelt sprayed during the winter season and the winter season penetrates into the asphalt road, and the road itself contains moisture and snow remover for a long time, causing the physical properties of the asphalt to change. .

In general, all exposed facilities are damaged by external resistance. In order to prevent this, iron and wood are coated with oil paint and concrete is coated with water or oil paint to protect the mother.

Although asphalt roads and concrete roads are the most resistant structures on the outside, the road maintenance period is relatively short since the maintenance of the roads is neglected. In order to solve these problems, it is necessary to raise the awareness of maintenance of roads by local self-organization and civil engineering design companies, and realistic maintenance of asphalt road through asphalt seal coating is urgently needed.

The object of the present invention is to provide an asphalt seal coating composition which can enhance the durability of an asphalt road and prolong its service life, and can make the appearance of the road beautiful, thereby reducing the maintenance cost of the road.

Another object of the present invention is to provide an asphalt seal coating composition excellent in chemical resistance and ultraviolet barrier property.

Another object to be solved by the present invention is to provide an asphalt seal coating composition excellent in moisture resistance, impact resistance and heat resistance.

The above and other objects of the present invention can be achieved by the present invention described below.

One aspect of the present invention is an asphalt binder comprising 25 to 40% by weight of an asphalt binder; 12 to 25% by weight of a nanoclay; 0.1 to 3% by weight of a surfactant and 32 to 62.9% by weight of purified water.

In addition, the asphalt seal coating composition may comprise sand and comprises 25 to 40% by weight of an asphalt binder; 12 to 25% by weight of a nanoclay; 0.1 to 3% by weight of a surfactant, and 32 to 62.9% by weight of purified water, based on 100 parts by weight of the first mixture.

Also, the asphalt seal coating composition comprises 25 to 40% by weight of an asphalt binder; 12 to 25% by weight of a nanoclay; 100 parts by weight of a first mixture comprising 0.1 to 3% by weight of a surfactant and 32 to 62.9% by weight of purified water; And a second mixture comprising 25 to 50 parts by weight of sand and 25 to 50 parts by weight of purified water, and the sand may have a particle size of 20 to 200 mesh.

In addition, the asphalt binder may comprise at least one of asphalt and refined tar.

In addition, the nanoclase may be a layered silicate compound having a particle diameter of less than 1 mu m and an aspect ratio of 50 to 1000.

In addition, the nanoclase may be selected from the group consisting of sodium montmorillonite, magnesium montmorillonite, calssium montmorillonite, nontronite, beidellite, volkonskoite, Hectonite, saponite, sauconite, magadite, medmonite, kenyaite, vermiculite, soda cateate, and at least one silicate compound selected from the group consisting of sobockite, stevensite, rectonite, tarosovite and ledikite.

In addition, the surfactant may be quaternary ammonium salts or alkylimidazolines as cationic surfactants, and the quaternary ammonium compound may be tetraalkylammonium salts, tetraarylammonium salts, and heterocyclic ammonium salts.

Wherein the asphalt seal coating composition comprises at least one of a UV stabilizer and an asphalt modifier, wherein the UV stabilizer is a HALS-based or benzotriazole-based compound, and the asphalt modifier may be an SBR latex or a water-dispersed epoxy resin.

Another aspect of the invention relates to an asphalt seal coating layer formed from the asphalt seal coating composition.

When the thickness of the asphalt seal coating layer is d, the particle size of the sand particles contained in the seal coating layer may be 0.5 d to 0.7 d.

The asphalt seal coating composition of the present invention is excellent in chemical resistance, ultraviolet barrier property, moisture resistance, impact resistance and heat resistance to prolong the lifespan of asphalt roads, and can beautify and reinforce the appearance of roads, have.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, the present invention will be described more specifically.

Asphalt seal coating composition

The seal coating composition according to an embodiment of the present invention may include an asphalt binder (A), a nanoclave (B), a surfactant (C), sand (D), and residual water.

(A) Asphalt binder

The asphalt binder includes at least one of an asphalt and a refined tar.

The asphalt is not particularly limited as long as it has a viscosity (60 ° C) of 100 to 1,000,000 Poise and an intrusion (25 ° C) according to ASTM regulation is in the range of 5 to 400 dmm (1/10 mm) Straight-run asphalt and hydrocarbon-based oils such as paraffin, aromatic and naphthanic, respectively, or by diluting them and oxidizing them. It may also include special asphalt other than petroleum-based asphalt such as Coal tar pitch, Trinidad asphalt. More preferably, the asphalt has a flash point (COC system, ASTM D-92) of at least 230 and an asphaltene content (ASTM D 4142) of 2 to 40% by weight.

The refined tar means tar in which impurities such as ash and quinoline insoluble substances contained in petroleum or coal tar are removed. Specifically, the method for purifying tar comprises the steps of: providing tar and an organic solvent while maintaining a temperature of 15 to 350 and a pressure of 1 to 100 bar, respectively; Continuously mixing the tar and the organic solvent to form a mixture; Separating the lower layer containing the impurities dissolved in the organic solvent and the upper layer containing the tar dissolved in the organic solvent by the difference in specific gravity; Further purifying the upper layer using a filter; And a distillation step for separating the organic solvent from the purified upper layer.

The asphalt binder may be included in an amount of 25 to 40% by weight based on the total weight of the seal coating composition. Excellent adhesion and water tightness can be ensured within the above range.

The asphalt binder may be used by mixing asphalt and refined tar at a weight ratio of 10:90 to 30:70. In this range, resistance to plastic deformation can be maximized and excellent surface smoothness can be ensured.

(B) Nanoclass

The nano-clay refers to a clay mineral having a particle size of nano unit. The nanoclay according to an embodiment of the present invention may include a layered silicate compound having a layered structure.

Since the silicate compound having a layered structure has a high aspect ratio as an inorganic compound having a layered structure swellable by water, it can exhibit excellent watertightness and gas barrier even in a small amount.

The nanoclase may have an aspect ratio of less than 1 占 퐉, an aspect ratio of 50 to 1000, and preferably an aspect ratio of 50 to 500 in terms of water tightness and gas barrier property. Particularly, And may have an aspect ratio of 300 to 500 for securing the property.

Wherein an aspect ratio Z of the nanoclase is Z = L / a, wherein L is a particle size determined by dynamic light scattering in a solvent, and a is And the unit thickness of the layered inorganic compound (unit thickness a is a value measured by powder X-ray diffraction method)).

Wherein the nano-clay is a two-layered silicate compound having an octahedron layer in which aluminum or magnesium is a central metal on the upper part of the tetrahedral layer of silica and a tetrahedron compound in which the tetrahedral layer of silica is composed of aluminum or magnesium as a central metal And a silicate compound having a three-layer structure sandwiching a sheath layer on both sides. As the former, kaolinite group and the like can be exemplified, and the latter can be exemplified by smectite group and mica group by the number of interlayer cations. Specific examples include kaolinite, montmorillonite, beardite, nontronite, saponite, hectorite and the like.

The nanoclase according to one embodiment of the present invention may be used in combination with sodium montmorillonite, magnesium montmorillonite, calssium montmorillonite, nontronite, beidellite, volkonskoite, hectonite, saponite, sauconite, magadite, medmonite, kenyaite, vermiculite, ), At least one silicate compound selected from the group consisting of sobockite, stevensite, rectonite, tarosovite, and ledikite.

The nanoclay may be included in an amount of 12 to 25% by weight based on the total weight of the seal coating composition. It is possible to exhibit excellent barrier properties in the above range.

The nanoclase may be mixed with the composition in a state in which it is first mixed with the solvent and swelled. Examples of the solvent include isopropanol, ethylene glycol, diethylene glycol, methyl alcohol, propanol, dimethyl sulfoxide and acetone, but water and alcohols are preferred.

(C) Surfactant

The surfactant is used when the asphalt binder is mixed with water so as to maintain a stable oil phase.

According to one embodiment of the present invention, the surfactant may be a cationic emulsifier. When an asphalt binder is emulsified with a cationic surfactant, a stable phase can be obtained at a pH of 7 or less. Therefore, when a cationic surfactant is used, it is preferable to secure phase stability using an acidic catalyst such as hydrochloric acid, sulfuric acid, or acetic acid.

In the present invention, quaternary ammonium salts, alkylimidazolines, and the like can be used as cationic surfactants. Examples of the tetravalent ammonium compound include tetraalkylammonium salts, tetraarylammonium salts, and heterocyclic ammonium salts.

The organic or inorganic salt of the tetraalkyl ammonium is preferably an alkyl or alkaline earth metal salt in which the alkyl chain is composed of 1 to 20 carbons or is selected from hydroxyethyl, 2-hydroxypolyethoxylate, and the salt may be in the form of -Cl, -Br, -acetate, -CH ₃ OSO ₃ , -C ₂ H ₅ OSO ₃ and the like. Specific examples include stearyl trimethyl Ammonium chloride, stearyltrimethylammonium methosulfate, and the like.

When the asphalt binder is emulsified with a cationic surfactant, the most stable phase can be obtained at pH 7 or less. Therefore, hydrochloric acid, sulfuric acid, acetic acid, nitric acid, or phosphoric acid may be used as the acidic catalyst, but preferably hydrochloric acid is used so that the cationic surfactant adsorbs most effectively at the interface between water and the asphalt, Asphalt can represent the most stable phase.

The surfactant may be contained in an amount of 0.1 to 3% by weight based on the total weight of the seal coating composition. Phase separation does not occur during the production of emulsified asphalt in the above range, and excellent phase stability can be ensured.

(D) sand

The particle size of the sand may be 0.8 d or less, specifically 0.5 d to 0.7 d, when the thickness of the desired seal coating layer is d. Excellent strength and surface flatness can be ensured within the above range.

In one embodiment, the sand may have a particle size of 20 to 200 mesh, preferably 40 to 100 mesh, more preferably 50 to 70 mesh. If the particle size of the sand is 200 mesh or more, the workability may be lowered due to an increase in the amount of shrinkage, and shrinkage cracking may occur. If the sand size is less than 20 mesh,

The sand comprising 25 to 40% by weight of an asphalt binder; 12 to 25% by weight of a nanoclay; 0.1 to 3% by weight of a surfactant; And purified water 32 to 62.9% by weight based on 100 parts by weight of the first mixture. Excellent strength can be secured in the above range.

The sand may be contained at a weight ratio of 1: 1 to 2: 1 with the nanoclay. Excellent strength and barrier property can be ensured simultaneously in the above range.

(E) UV stabilizer

The UV stabilizer may be a HALS-based or benzotriazole-based UV stabilizer. Hindered Amine light Stabilizer (HALS) UV stabilizers are used to remove free radicals generated during the photolysis reaction and stop the photooxidation reaction. They are excellent in light stability and compatibility with polymers, so they do not deteriorate the inherent physical properties of polymers, Can be improved.

The UV stabilizer may be included in an amount of 0.1 to 3% by weight based on the total weight of the seal coating composition. And can exhibit excellent weather resistance in the above range.

The water used in the asphalt seal coating composition of the present invention is preferably purified water or deionized water (DI water). The unpurified tap water contains impurities, which may inhibit the reaction of the surfactant or cause a side reaction, thereby deteriorating the storage stability of the asphalt seal coating composition.

In the present invention, if necessary, additives such as an asphalt modifier, an adhesion promoter, a heat resistance improver, and the like may be optionally included in the present invention. For example, in order to improve the physical properties of emulsified asphalt, a polymer additive such as SBR (styrene-butadiene rubber) latex or EPD can be used as an asphalt modifier.

Method for manufacturing asphalt seal coating composition

The method for manufacturing an asphalt seal coating composition according to one embodiment of the present invention comprises the steps of preparing an emulsified asphalt mixture (S1), preparing a nanoclay mixture (S2), and preparing an emulsified asphalt-nanoclause mixture (S3) .

In the step (S1) of preparing the emulsified asphalt mixture, an inversion emulsification method may be employed in which the surfactant is dissolved on the asphalt binder, and then the continuous phase is agitated while adding distilled water to invert the continuous phase from oil to water. In addition, it is more effective to emulsify the emulsion by a mechanical force such as a homomixer or a colloid mill.

The step (S2) of preparing the nanoclave mixture is a step of swelling the nanoclase. As an example, the nanoclase is swollen with a homomixer in at least one solvent of nanoclase isopropanol, ethylene glycol, diethylene glycol, methyl alcohol, propanol, dimethyl sulfoxide, .

In the production step (S3) of the emulsified asphalt-nano-clay mixture, the prepared emulsified asphalt mixture and the nano-clay mixture may be mixed by a mechanical force such as a homomixer or a colloid mill.

The asphalt seal coating composition according to another embodiment of the present invention may further comprise a sand mixing step (S4). The sand mixing step S4 is a step of further adding sand to the prepared emulsified asphalt-nano clay mixture, wherein 25 to 50 parts by weight of purified water and 25 to 50 parts by weight of sand are added to 100 parts by weight of the emulsified asphalt- Lt; RTI ID = 0.0 > asphalt < / RTI > seal coating composition

Asphalt seal coating layer

Using the asphalt seal coating composition prepared above, the asphalt seal coating layer can be formed by applying the sealant on the road surface with a predetermined thickness and curing the sealant.

The thickness of the formed asphalt seal coating layer may be 0.5 to 3.0 mm, specifically 0.5 to 1.5 mm. The asphalt seal coating layer according to an embodiment of the present invention may include sand particles. When the thickness of the asphalt seal coating layer is d, the particle diameter of the sand particles is 0.8d or less, specifically 0.5d to 0.7d . Excellent strength and surface flatness can be ensured within the above range.

Construction method using asphalt seal coating composition

The method of applying the asphalt seal coating composition according to one embodiment of the present invention includes: cleaning the aged asphalt road surface due to port holes and cracks, and then applying the primer; Heating the asphalt around the port hole using an infrared heating device so that the port hole can be repaired, inserting the port hole so as to fill the asphalt concrete, and repairing the port hole by performing a planarization operation; Repairing the crack by removing foreign substances in the crack so as to repair the crack, and filling the crack with a crack-specific sealant; And a step of sealingly coating the top of the crack and the port hole that has been repaired.

The step of repairing the port hole may include heating an area of the port hole at 140 to 220 ° C. with an infrared heater to prepare filling of the asphalt concrete; Indirectly heating the asphalt around the port hole so that the filled asphalt concrete can maintain the best adhesion state at the area where the asphalt concrete is adhered to the existing asphalt concrete; And placing the asphalt concrete in the port hole.

The asphalt concrete pouring step is performed by spraying an asphaltic asphalt adhesive on a conventional asphalt concrete which has been inverted in a square shape by flipping, spraying a mixture with fresh asphalt concrete, and compaction with a compaction device and a compactor. In this case, the aggregate mixed type sealant is used, the surface is ironed by ironing, the surface is smoothed, the outer surface of the surface is uniformly maintained, and the port hole is repaired by the infrared heater.

The step of repairing the cracked portion of the asphalt may include the steps of removing a foreign substance in a crack region using a high-pressure heater and cleaning the entire work area cleanly; And a step of removing the dust and moisture by using a heater with a cracked portion, and then filling the portion by using a crack-exclusive sealant dissolved in a sealant dissolver.

The above-mentioned seal coating step is carried out by first applying the edges by using a bar-shaped horizontal rubber shear, and applying the above-mentioned asphalt seal coating composition to a predetermined thickness using a self-propelled mechanical spraying or seal coating spray machine, It may be applied over the primary and secondary coatings and cured.

The present invention may be better understood by the following examples, which are for the purpose of illustrating the invention and are not intended to limit the scope of protection defined by the appended claims.

Example  1-4 and Comparative Example  1-3

Example  One

After dissolving 1 wt% of tetramethylammonium and 0.1 wt% of hydrochloric acid in 36 wt% of asphalt having a softening point of about 75 ° C and an invasion degree of about 65 dmm, 32.9 wt% of purified water was gradually added while stirring with a colloid mill to prepare an emulsified asphalt mixture .

15% by weight of natural Na ⁺ -MMT (montmorillonite, particle diameter 560 nm, aspect ratio 461) and 15% by weight of purified water in Japan were mixed for 1 hour using a homomixer, left to stand for 24 hours and swollen to prepare a nanoclay mixture Respectively.

The emulsified asphalt mixture and the nanoclay mixture prepared above were mixed and stirred to prepare a first asphalt seal coating composition.

Example  2

37 parts by weight of sand having an average particle diameter (D50) of 0.7 mm and 30 parts by weight of purified water were added to 100 parts by weight of the first asphalt seal coating composition prepared in Example 1, followed by stirring to prepare a second asphalt seal coating composition .

Example  3

20% by weight of asphalt having a softening point of about 75 ° C and an invasion degree of about 65 dmm, and 1% by weight of tetramethylammonium and 0.1% by weight of hydrochloric acid were dissolved in 16% by weight of purified tar, and 32.9% by weight of purified water was gradually added while using a colloid mill Followed by stirring to prepare an emulsified asphalt mixture.

15% by weight of natural Na ⁺ -MMT (montmorillonite, particle diameter 560 nm, aspect ratio 461) and 15% by weight of purified water in Japan were mixed for 1 hour using a homomixer, left to stand for 24 hours and swollen to prepare a nanoclay mixture Respectively.

The prepared emulsified asphalt mixture and nano clay mixture were mixed and stirred to prepare a third asphalt seal coating composition.

Example  4

37 parts by weight of sand having an average particle diameter (D50) of 0.7 mm and 30 parts by weight of purified water were added to 100 parts by weight of the third asphalt seal coating composition prepared in Example 3, followed by stirring to prepare a fourth asphalt seal coating composition .

The fourth asphalt seal coating composition was applied on the road surface to a thickness of 2 mm and cured to prepare a seal coating layer.

Comparative Example  One

After dissolving 1 wt% of tetramethylammonium and 0.1 wt% of hydrochloric acid in 36 wt% of asphalt having a softening point of about 75 ° C and an invasion degree of about 65 dmm, 39.9 wt% of purified water was gradually added while stirring with a colloid mill to prepare an emulsified asphalt mixture .

7% by weight of natural Na ⁺ -MMT (montmorillonite, particle diameter 560 nm, aspect ratio 461) and 15% by weight of purified water of Japan were mixed for 1 hour using a homomixer, left to stand for 24 hours and swelled to prepare a nanoclay mixture Respectively.

The prepared emulsified asphalt mixture and the nanoclave mixture were mixed and stirred to prepare a fifth asphalt seal coating composition.

Comparative Example  2

After dissolving 1 wt% of tetramethylammonium and 0.1 wt% of hydrochloric acid in 42 wt% of asphalt having a softening point of about 75 ° C and an invasion degree of about 65 dmm, 30 wt% of purified water was gradually added while stirring with a colloid mill to prepare an emulsified asphalt mixture .

10% by weight of natural Na ⁺ -MMT (montmorillonite, particle diameter 1250 nm, aspect ratio 1100) and 15% by weight of purified water in Japan were mixed for 1 hour using a homomixer, left to stand for 24 hours and swollen to prepare a nanoclay mixture Respectively.

The prepared emulsified asphalt mixture and the nanoclave mixture were mixed and stirred to prepare a sixth asphalt seal coating composition.

Property evaluation method

Moisture resistance: measured according to ASTM D 2939.

Heating resistance: Measured according to ASTM D 2939.

Impact Resistance: Measured according to ASTM D 2939.

Flexibility: Measured according to ASTM D 2939.

Example 1 Example 2 Example 3 Example 4 Moisture resistance clear clear clear clear Heating resistance clear clear clear clear Impact resistance clear clear clear clear flexibility clear clear clear clear

Comparative Example 1 Comparative Example 2 Moisture resistance Lifting Lifting Heating resistance Run down Run down Impact resistance crack crack flexibility fracture fracture

As shown in the results of Table 1 and Table 2, the asphalt seal coating composition of Example 1-4 meets the standard of ASTM D 2939, but the asphalt seal coating composition of Comparative Example 1 containing the nano- It is found that the asphalt seal coating composition of Comparative Example 2 in which the particle diameter and the aspect ratio exceed the range of the present invention has poor water resistance, heat resistance, impact resistance and flexibility and does not meet the standard of ASTM D 2939.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

25 to 40 wt% asphalt binder;
12 to 25% by weight of a nanoclay;
0.1 to 3% by weight of a surfactant; And
And 25 to 50 parts by weight of sand relative to 100 parts by weight of the first mixture containing 32 to 62.9% by weight of purified water,
Wherein the asphalt binder comprises at least one of asphalt and refined tar,
Wherein the nanoclase is a layered silicate compound having a particle diameter of less than 1 mu m and an aspect ratio of 50 to 1000,
Wherein the sand has a particle size of 20 to 200 mesh.
delete delete delete The method according to claim 1,
Wherein the nanoclase is selected from the group consisting of sodium montmorillonite, magnesium montmorillonite, calssium montmorillonite, nontronite, beidellite, volkonskoite, hectorite hectorite, heptonite, saponite, sauconite, magadite, medmonite, kenyaite, vermiculite, sobockite, Wherein the composition comprises at least one silicate compound selected from the group consisting of stevensite, rectonite, tarosovite and ledikite.
The method according to claim 1,
The surfactant is a quaternary ammonium salt or an alkylimidazoline as a cationic surfactant,
Wherein the tetravalent ammonium compound is a tetraalkylammonium salt, a tetraarylammonium salt, or a heterocyclic ammonium salt.
The method according to claim 1,
A UV stabilizer and an asphalt modifier,
The UV stabilizer is a HALS-based or benzotriazole-based compound,
Wherein the asphalt modifier is an SBR latex or a water-dispersed epoxy resin.
An asphalt seal coating layer formed from the asphalt seal coating composition of any one of claims 1 to 7.
A seal coating layer formed from the asphalt seal coating composition of claim 1,
And the thickness of the asphalt seal coating layer is d, the particle diameter of the sand particles contained in the seal coating layer is 0.5d to 0.7d.