KR102077055B1 - Middle Temperature Modified-Asphalt Concrete Compositions Using Stylene Isoprene Stylene and Aggregate-powder of Improved Grain Size and Constructing Methods Using Thereof - Google Patents

Abstract

The present invention provides a middle temperature modified asphalt concrete composition using styrene-isoprene-styrene (SIS) and fine powder aggregate with an improved particle size and a construction method thereof. According to the present invention, the middle temperature asphalt concrete composition comprises with respect to 100 parts by weight of asphalt: 1 to 25 parts by weight of SIS; 1 to 25 parts by weight of hydrogenated petroleum resin; 500 to 2,000 parts by weight of aggregates; 30 to 150 parts by weight of fine powder aggregates; 0.5 to 10 parts by weight of a modifier; 0.5 to 25 parts by weight of ethylene-propylene copolymer; 0.1 to 2 parts by weight of cellulose fiber; and 0.1 to 2 parts by weight of wax. Accordingly, the middle temperature modified asphalt concrete composition using SIS and fine powder aggregate with an improved particle size provides effects of providing high durability, easily performing a deposition process at low cost without easily generating plastic deformation, aging, and/or defoliation, and being deposited and/or paved at a middle temperature lower than that of a conventional asphalt concrete composition.

Description

Middle Temperature Modified-Asphalt Concrete Compositions Using Stylene Isoprene Stylene and Aggregate-powder of Improved Grain Size and Constructing Methods Using Thereof}

The present invention relates to a medium temperature modified asphalt concrete composition, and more particularly to a medium temperature modified asphalt concrete composition using SIS and fine aggregate aggregate of improved aggregate particle size to improve the physical properties of asphalt concrete while working in an intermediate temperature range, and a construction method thereof. It is about.

In general, asphalt is a black or dark brown solid or semi-solid thermoplastic material composed of thousands or more kinds of high molecular hydrocarbons (C-H) containing organic compounds and trace inorganic compounds, and has a characteristic of gradually changing to a liquid phase when heated.

The asphalt is divided into types such as natural asphalt, petroleum-based asphalt and pavement tar, and straight asphalt, emulsified asphalt are widely known.

In addition, the asphalt is used as a bonding material or an adhesive material because it is excellent in adhesion and adhesion to the mineral material, and is also used as a waterproofing material because it is insoluble in water and not impermeable, and can change the viscosity according to the purpose of use. The scope of application is diverse and it is used for various purposes such as road pavement, waterproofing, general industry, agriculture.

Asphalt used for road pavement is petroleum-based asphalt, and straight asphalt having excellent adhesiveness, extensibility, and water absorption is generally used.

However, straight asphalt has a low softening point, high temperature sensitivity, weak weather resistance, and weak cohesion, and thus, it is used by adding various modifiers to suit the characteristics of the place used.

Generally, asphalt modifiers include rubber, thermoplastic, thermosetting resin, hydrocarbon, filler, fiber, antioxidant, reducing agent, and the like, natural rubber, styrene butadiene rubber (SBR), and waste tires. (Crumb Rubber), etc.Styrene Butadiene Styrene (SBS), Ethylenevinylacetate (EVA), Polyethylene (PE), Polypropylene (PP), Polyvinyl Chloride (PVC), Polyethylene Terephthalate (PET), etc. In the thermosetting resin series, epoxy resins, urethane resins, acrylic resins, phenol resins and petroleum resins are used. In the hydrocarbon series, natural asphalt and gilsonite are used.

However, the asphalt modifiers developed so far have problems with pavement cracking and plastic deformation, which appear to decrease the resistance to low temperature cracking and fatigue cracking after time due to the large temperature difference in four seasons. Problems such as asphalt oxidation caused by exposure to sunlight, aggregate desorption due to weakening of adhesive strength, etc., and in addition, the field-type modifier (Plant-mix type) is not easy to secure uniform quality, mixtype) The modified asphalt is not easy to uniformly mix the components, and each component such as the modified material and asphalt is dependent on the physical bonding, and thus the storage property is difficult to preserve.

In particular, since 2000, modified concrete that improved the performance of concrete with fast-hardening cement and polymer has been developed, and has been widely used as a repair material for concrete road structures due to short curing time, high permeability resistance, and freeze-thawing resistance.

However, since the modified concrete contains a large amount of latex, the cost is high, and the heat reflection rate is high, thus preventing the early winter freezing effect compared to conventional asphalt concrete, and the heat absorption rate is low, so the outside air temperature change (daily crossing, four seasons) ), There is a problem that cracks, surface peeling, dropping out (potholes) due to the temperature stress in severe environments.

In addition, some of the bridges and special zones are heavy and heavy, and heavy-modified asphalt (PMA) pavements are difficult to withstand.

Therefore, very strong asphalt pavement should be constructed thickly, but in general asphalt pavement should not only be thick but also have strong elasticity, toughness, and tensile strength.

Generally, steel box girder bridges, as well as concrete bridges, are accompanied by a waterproofing process to prevent deterioration of the lower layer.

However, there is a problem that the waterproof layer (such as coating or coating) is expensive without structural performance.

Therefore, as mentioned above, if the mixture with excellent elasticity and the mixture with toughness, tensile strength and high adhesion are applied, it can be an asphalt pavement that exhibits both structural performance and durability, and thus can withstand excessive traffic loads. As it is asphalt pavement with excellent durability and function, it is easy for construction as well as fast traffic opening.

On the other hand, as a conventional technology related to the above-described technology disclosed in the Republic of Korea Patent Publication No. 10-2016-0106070 polymer modified asphalt concrete composition and a method for producing a polymer modified asphalt concrete using the same.

The present invention has been made to overcome the above-mentioned problems, so that it is durable, and can be poured and / or laid at a moderate temperature, which is lower than that of a general asphalt concrete composition, without causing plastic deformation, aging and / or peeling easily. Provided is a medium-temperature modified asphalt concrete composition using a SIS and fine aggregate aggregate of improved aggregate particle size and a construction method thereof.

The present invention

Based on 100 parts by weight of asphalt,

1 to 25 parts by weight of styrene isoprene styrene;

1 to 25 parts by weight of hydrogenated petroleum resin;

Aggregate 500 to 2,000 parts by weight;

30 to 150 parts by weight of fine powder aggregate;

0.5 to 10 parts by weight modifier;

0.5 to 25 parts by weight of an ethylene-propylene copolymer;

0.1 to 2 parts by weight of cellulose fiber; And

It provides a modified asphalt concrete composition comprising 0.1 to 2 parts by weight of wax.

In addition, the present invention

Removing foreign substances-cleaning step of removing foreign substances on the surface;

On the surface of the foreign material removal-cleaning step is completed, based on 100 parts by weight of asphalt, styrene isoprene styrene 1 to 25 parts by weight, hydrogenated petroleum resin 1 to 25 parts by weight, aggregate 500 to 2,000 parts by weight, fine powder aggregate 30 to A casting step of pouring the modified asphalt concrete composition comprising 150 parts by weight, 0.5 to 10 parts by weight of modifier, 0.5 to 25 parts by weight of ethylene-propylene copolymer, 0.1 to 2 parts by weight of cellulose fiber, and 0.1 to 2 parts by weight of wax; A compaction step of compacting work after the reforming asphalt concrete composition pouring step is completed; And providing a modified asphalt concrete composition construction method comprising a curing step of curing after the compaction step stroke is completed.

The modified asphalt concrete composition according to the present invention, specifically modified SIS and modified asphalt concrete composition using fine aggregate aggregate of improved aggregate particle size, is durable and can be poured at low cost without easily causing plastic deformation, aging and / or peeling. Not only can the process be easily performed, but there is an effect such that it is possible to place and / or install at a lower temperature than the general asphalt concrete composition.

Hereinafter, the present invention will be described in detail.

In one aspect, the present invention is based on 100 parts by weight of asphalt, styrene isoprene styrene 1 to 25 parts by weight; 1 to 25 parts by weight of hydrogenated petroleum resin; Aggregate 500 to 2,000 parts by weight; 30 to 150 parts by weight of fine powder aggregate; 0.5 to 10 parts by weight modifier; 0.5 to 25 parts by weight of an ethylene-propylene copolymer; 0.1 to 2 parts by weight of cellulose fiber; And it provides a modified asphalt concrete composition comprising 0.1 to 2 parts by weight of wax.

In another aspect, the present invention is a foreign material removal-cleaning step of cleaning after removing the foreign material on the surface; On the surface of the foreign material removal-cleaning step is completed, based on 100 parts by weight of asphalt, styrene isoprene styrene 1 to 25 parts by weight, hydrogenated petroleum resin 1 to 25 parts by weight, aggregate 500 to 2,000 parts by weight, fine powder aggregate 30 to A casting step of pouring the modified asphalt concrete composition comprising 150 parts by weight, 0.5 to 10 parts by weight of modifier, 0.5 to 25 parts by weight of ethylene-propylene copolymer, 0.1 to 2 parts by weight of cellulose fiber, and 0.1 to 2 parts by weight of wax; A compaction step of compacting work after the reforming asphalt concrete composition pouring step is completed; And providing a modified asphalt concrete composition construction method comprising a curing step of curing after the compaction step is completed.

Asphalt according to the present invention is not particularly limited as long as it is conventionally used in the art, petroleum-based asphalt or asphalt mixture may be used.

Here, it is recommended to use a natural asphalt mixture for the asphalt mixture.

The asphalt mixture, in particular the natural asphalt mixture, is not particularly limited as long as it is a natural asphalt mixture commonly used in the art, but is preferably straight asphalt, Trinidad lake asphalt, Trinidad epure It is preferable to use asphalt or at least one or more mixtures selected from them, and more preferably to use straight asphalt and natural asphalt, such as Trinidad Lake Asphalt and / or Trinidad Epure Asphalt mixture, having a penetration of 20 to 40. It is preferable to use a mixture of 70 to 80% by weight of straight asphalt having a penetration degree of 20 to 40 and 20 to 30% by weight of natural asphalt composed of Trinidad and Asphalt or Trinidad Epure asphalt. It's mean.

Here, the straight asphalt is a conventional asphalt obtained by refining the residue obtained by distilling or distilling the raw material with petroleum asphalt, and particularly, having an infiltration degree of 20 to 40 may be easily installed on the road.

The straight asphalt is preferably contained in 70 to 80% by weight in the asphalt mixture. If the content is less than 70% by weight it may take a long time to harden after the asphalt paving, the softening point may be lowered, if it exceeds 80% by weight may be reduced fluidity.

In addition, the natural asphalt serves to increase the deformation resistance, sliding resistance and frictional resistance as well as improving the fluidity of the medium temperature modified asphalt concrete composition using the SIS of the present invention.

The natural asphalt may be a Trinidad Lake asphalt and / or Trinidad epure asphalt.

The natural asphalt is preferably included in the asphalt mixture in 20 to 30% by weight, when the content is less than 20% by weight, the effect of improving the fluidity, deformation resistance, sliding resistance and frictional resistance is insignificant, exceeding 30% by weight. In this case, the asphalt of the present invention may be softened and the softening point may be lowered.

The content of the remaining components other than asphalt constituting the modified asphalt concrete composition according to the present invention, in particular the SIS and the medium-temperature modified asphalt concrete composition using fine aggregate aggregate of improved aggregate particle size, is based on 100 parts by weight of asphalt.

Styrene isoprene styrene (SIS) according to the present invention suppresses cracking, prevents potholes, and improves strength while providing caking force to asphalt.

It is preferable to use styrene isoprene styrene having an elongation of 320 to 1,400% as the preferred styrene isoprene styrene.

Hydrogenated petroleum resin according to the present invention is to provide tackiness, adhesion stability and heat resistance of the modified asphalt concrete composition, while adding hydrogen to remove odor, toxicity and the like, and to add stability to light and heat. Any hydrogenated petroleum resin commonly used in the art may be used for the purpose, but preferably hydrogenated petroleum resin, for example, hydrogenated (hydrogenated) C-5 petroleum resin, cooma One or more selected from petroleum resins such as ronindene resins and hydrogenated dicyclopentadiene hydrocarbon resins (hydrocarbonated dicyclopentadiene hydrocarbon resins) may be used. More preferably, the average molecular weight is 300 to 3,000 Da. It is recommended to use aromatic hydrocarbon petroleum resin having a softening point of 50 to 150 ° C. Force is excellent while it is most preferable to use a less brittle hydrogenated dicyclopentadiene-based petroleum resin and / or hydrogenated C-5 hydrocarbon resin.

The amount of the hydrogenated petroleum resin is not particularly limited, but is preferably 1 to 25 parts by weight based on 100 parts by weight of asphalt.

The aggregate according to the present invention is a mineral material for construction that can be aggregated by a binder such as asphalt, styrene isoprene styrene, and / or hydrogenated petroleum resin (hydrogenated petroleum resin) to form a mass, and is chemically stable.

Aggregate refers to sand, gravel, basalt, stone stones, basalt, and other similar materials.

Specifically, the aggregate may further include basic vein cancer having an absorption of about 0.7% and / or bauxite having an absorption of about 5.40%.

Here, the average particle size of the aggregate is preferably used that is 0.08 to 13mm, specifically 0.08mm or more less than 4.76mm is called fine aggregate, and 4.76mm or more is called coarse aggregate. The amount of the preferred aggregate is preferably 500 to 2,000 parts by weight based on 100 parts by weight of asphalt, and the mixing amount of fine aggregate and coarse aggregate included in the aggregate is not particularly limited and may be appropriately adjusted as necessary.

Fine powder aggregate according to the present invention is to fill in the gap between the aggregate, specifically fine aggregate and coarse aggregate to improve waterproofing, etc., if any fine powder aggregate used in the art having a purpose in the art using any It is okay.

It is recommended that the size of the fine powder aggregate be at least 0.08 mm or less, and more preferably, have an average particle size of 0.001 to 0.08 mm, and the amount of the fine powder aggregate is 30 to 150 parts by weight based on 100 parts by weight of asphalt.

In addition, the fine powder aggregate refers to a fine stone powder, a limestone fine powder, a fine sand powder, a gravel fine powder, a basalt fine powder, a five stone fine powder, a basalt fine powder, and other similar materials.

The modifying agent according to the present invention improves the durability and flowability of the modified asphalt concrete composition, in particular the medium temperature modified asphalt concrete composition using SIS and fine aggregate aggregate of improved aggregate particle size, increases the fluidity at high temperatures and cracks at low temperatures. As a modifier having such a purpose, any modifier may be used, but rubber, plastic or a mixture thereof may be preferably used.

As the preferred rubber, it is recommended to use natural rubber, styrene-butadiene (SB), polypropene latex, ground rubber or at least one mixture selected from them.

As the preferred plastic, it is recommended to use polyethylene (PE), polypropylene (PP), ethylene acrylic copolymer, polyvinyl chloride, ethylene propylene, polyolefin or at least one mixture selected from them.

The amount of the preferred modifier can be changed according to the user's choice, but it is preferably 0.5 to 10 parts by weight based on 100 parts by weight of asphalt.

The ethylene-propylene copolymer according to the present invention may include repeating units derived from ethylene and repeating units derived from propylene.

Here, the ethylene content of the ethylene-propylene copolymer is not particularly limited as long as the density is within the range described later, but is usually 70 to 79% by weight, preferably 71 to 78% by weight, more preferably 72 to 78% by weight, More preferably, it is 73 to 77 weight%, especially preferably 75 to 77 weight%, and the remainder is 21 to 30 weight%, for example, a repeating unit derived from propylene.

Herein, the ethylene content in the ethylene-propylene copolymer may be measured by 13 C-NMR.

In addition, the ethylene-propylene copolymer may be a repeating unit derived from at least one monomer selected from α-olefins, cyclic olefins, polyenes and aromatic olefins having 4 to 20 carbon atoms in a range that does not impair the object of the present invention. For example, it may be contained in an amount of 5% by weight or less, preferably 1% by weight or less.

Ethylene according to the present invention the density of the propylene copolymer is a measured density according to ASTM D1505-85, 857 to 882kg / m ^3, preferably 859 to 880kg / m ^3, and more preferably 860 to 880kg / m ³ And even more preferably 864 to 875 kg / m ³ , particularly preferably 868 to 875 kg / m ³ .

In addition, the molecular weight of the ethylene-propylene copolymer according to the present invention is a weight average molecular weight in terms of polystyrene measured by gel permeation chromatography (GPC), and is preferably 80,000 to 400,000 Da, preferably 100,000 to 380,000 Da, particularly preferably 120,000. To 350,000 Da.

Specifically, the ethylene-propylene copolymer according to the present invention may use a product comprising a commercially available ethylene-propylene copolymer, for example, Vistamaxx ^™ 8380 (ExonMobil Chemicals).

The amount of the preferred ethylene-propylene copolymer is not particularly limited, but is preferably 0.5 to 25 parts by weight based on 100 parts by weight of asphalt.

The cellulose fiber according to the present invention is to provide tensile strength and / or light weight due to the stress applied in the longitudinal and transverse directions of the bridge formed of the mesophilic modified asphalt concrete composition. Although it is good also, it is preferable to use natural cellulose fiber, and the usage-amount may be 0.1-2 weight part with respect to 100 weight part of asphalt.

The wax according to the present invention is to lower the temperature required for the manufacture and / or construction of medium temperature asphalt concrete composition, specifically medium temperature modified asphalt concrete composition, preferably 20 to 40 ℃ lower than carbon dioxide and harmful In order to minimize the emission of materials, any wax in the art used for this purpose may be used, but it is preferable to use polyethylene wax, and the amount thereof is preferably 0.1 to 100 parts by weight based on 100 parts by weight of asphalt. It is good that it is 2 weight part.

In a particular embodiment, the wax according to the invention may use a mixture mixed with modified fatty acids, in which case the wax, in particular polyethylene wax, is preferably mixed with the modified fatty acids in a weight ratio of 1: 0.1 to 0.6. .

Here, the polyethylene wax preferably has a melting point of 95 to 125 ° C and a melt viscosity of about 140 ° C to 80 to 400 cPs.

In this case, when the melting point of the polyethylene wax is less than 95 ° C, the stiffness of the asphalt may be weakened when mixed with the asphalt, and when the melting point exceeds 125 ° C, the polyethylene wax may not be sufficiently dispersed in the medium-temperature modified asphalt concrete composition, resulting in a drop in physical properties. There is.

In addition, when the melt viscosity of the polyethylene wax is less than 80 cPs at 140 ° C., the high temperature property is weakened and is not suitable as asphalt for road pavement. If the melt viscosity is more than 400 cPs at 140 ° C., the viscosity of the asphalt is too high to produce modified asphalt concrete composition. And the problem may occur when the process is not done properly during pouring.

On the other hand, the modified fatty acid used in combination with the wax serves to improve the moisture sensitivity of the asphalt concrete composition while complementing the neutralization function of polyethylene wax.

Specifically, the modified fatty acid is obtained by melting and reacting a fatty acid having 12 to 24 carbon atoms with at least one selected from the group consisting of calcium hydroxide, magnesium hydroxide, zinc hydroxide, and zinc oxide, in view of improving the moisture sensitivity of the modified asphalt concrete composition. Preferred at

In addition, the modified fatty acid preferably has a melting point in the range of 110 to 140 ℃. When the melting point of the modified fatty acid is out of the above range and higher than the manufacturing temperature of the asphalt concrete composition, it is not possible to obtain a neutralizing function complementary effect and an improvement in moisture sensitivity.

The modified asphalt concrete composition according to the present invention, specifically SIS and the moderate temperature modified asphalt concrete composition using fine aggregate aggregate of improved aggregate particle size may further include one or more kinds of adducts carried out in the following specific embodiments. .

In a particular embodiment, modified asphalt concrete composition according to the present invention is 2 to 15 parts by weight of glycidyl methacrylate (GMA) based on 100 parts by weight of asphalt to improve impact strength, elongation, tensile strength and / or elasticity, etc. It may further include a resin.

Preferred glycidyl methacrylate-based resins are ethylene-glycidyl methacrylate copolymers (EGMA), ethylene-butylacrylate-glycidyl methacrylate copolymers (EBA-GMA) or at least one selected from them. It is better to use mixtures.

In another particular embodiment, the modified asphalt concrete composition according to the present invention further comprises aminofunctional siloxan to effectively cure at room temperature and provide improved properties such as heat resistance, low temperature performance, chemical resistance, solvent resistance and oil resistance. It may include.

The amino group-containing siloxane is not particularly limited, and examples thereof include aminomethyl polydimethylsiloxane, and the amount of the amino group-containing siloxane is preferably 3 to 10 parts by weight based on 100 parts by weight of asphalt.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further comprise 1 to 10 parts by weight of tetraethylenepentamine (TEPA) based on 100 parts by weight of asphalt for viscosity control and strength enhancement. If the amount of ethylene pentamine is less than 1 part by weight, the effect is insignificant, and if it exceeds 10 parts by weight, the amount is excessive, which may adversely affect the physical properties of the mastic asphalt composition.

In another embodiment, the modified asphalt concrete composition according to the present invention may further comprise 1 to 5 parts by weight of sodium fluoride based on 100 parts by weight of asphalt in order to improve the filling and durability of the composition, sodium fluoride is 1 Secondly, but also serves as a filler, secondary to improve the durability, the effect can be obtained in the above content range.

In another embodiment, the modified asphalt concrete composition according to the present invention may further include 3 to 15 parts by weight of perfluoromethoxysilane based on 100 parts by weight of asphalt in order to improve the bondability and durability of the composition.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include a viscosity index improver of 3 to 20 parts by weight based on 100 parts by weight of asphalt in order to slow down the viscosity change at high or low temperatures.

Preferred viscosity index enhancers include poly-iso-butylene, olefin copolymers, ethylene-propylene copolymers, and styrene-butadiene copolymers. , Styrene-maleic acid-ester copolymers and / or polymethacrylates are preferable.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further comprise 1 to 10 parts by weight of acrylonitrile based on 100 parts by weight of asphalt in order to improve the durability and alkali resistance of the composition, the amount of the asphalt 100 When the amount is less than 1 part by weight, the effect of improving durability and alkali resistance is insignificant, and when it exceeds 10 parts by weight, the viscosity may increase, thereby reducing workability.

In another specific embodiment, the modified asphalt concrete composition according to the present invention is 5 to 15 parts by weight of dimethyl based on 100 parts by weight of asphalt in order to prevent the harmful components present in the composition from being eluted to the outside to cause environmental pollution It may further comprise ammonium chloride.

In another specific embodiment, the modified asphalt concrete composition according to the present invention further comprises 1 to 5 parts by weight of tetramethylene diisocyanate based on 100 parts by weight of asphalt to improve the water resistance, chemical resistance and / or internal resistance of the composition. can do.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further comprise 1 to 5 parts by weight of trimethylolpropane triacrylate based on 100 parts by weight of asphalt in order to improve the hardness of the composition and reduce surface contamination. .

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include starch phosphate ester, which is a kind of anionic modified starch, in order to improve the absorbency, permeability and moisture retention of the composition, the amount of which is 100 weight of asphalt. 0.1 to 2 parts by weight is preferable on a part basis.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include carboxymethyl cellulose (CMC) in order to increase the viscosity of the composition and improve adhesion, the amount of which is used in an amount of 1 to 100 parts by weight based on 100 parts by weight of asphalt. 5 parts by weight is good.

In another specific embodiment, the modified asphalt concrete composition according to the present invention further comprises 1 to 5 parts by weight of ammonium nonylphenol ether sulfate (based on 100 parts by weight of asphalt) to improve the filling and durability of the composition. can do.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1-3 parts by weight of zinc sulphate based on 100 parts by weight of asphalt.

Here, the zinc sulphate is widely used as an alkali imparting agent and when the zinc sulphate is included in the modified asphalt concrete composition, the alkali may be restored, such as a road to which the composition is applied, and the corrosion may be prevented by creating an inert film on the surface.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further comprise 1 to 3 parts by weight of polyindolocarbazole based on 100 parts by weight of asphalt for gelling of the composition.

In another specific embodiment, modified asphalt concrete composition according to the present invention is 3 to 15% by weight based on 100 parts by weight of asphalt to improve the acid resistance, alkali resistance, weather resistance, flame retardancy, antimicrobial, sound insulation, wear resistance and impact resistance, etc. of the composition It may further comprise negative microscopic hollow sphere powder.

Here, the microporous body powder is a powder having a fine hollow of 30 to 100 micrometers based on aluminum silicate.

In another specific embodiment, the modified asphalt concrete composition according to the present invention is based on 100 parts by weight of polymethylsilsesquioxane in order to improve adhesion of the composition and to fill voids in the pavement surface to which the binder composition is applied. It may further comprise 1 to 5 parts by weight.

In another specific embodiment, the modified asphalt concrete composition according to the present invention delays initial reaction, improves workability and quality stability, and increases sodium oleate based on 100 parts by weight of asphalt in order to increase interfacial adhesion with the surface to be bonded. It may further comprise 1 to 5 parts by weight.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of magnesium silicate based on 100 parts by weight of asphalt to extend the life of the composition.

Since the magnesium silicate has excellent chemical resistance, chemical resistance and weathering resistance, the magnesium silicate is extended in the above-described characteristics when included in the modified asphalt concrete composition.

In another specific embodiment, the modified asphalt concrete composition according to the present invention further comprises 1 to 5 parts by weight of modified silane silicate composite based on 100 parts by weight of asphalt in order to improve crack resistance, water resistance, abrasion resistance and / or adhesion. It may include.

Here, the modified silane silicate composites form an organic-inorganic polymerization reactivity while acting as a crosslinking agent to enhance adhesion in response to a substrate such as concrete or metal, and the modified silane silicate composite may be prepared by mixing silicate and silane. Preferred silicates may be any of silicates commonly used in the art, but more preferably alkali silicates, particularly preferably lithium silicates, pure potassium silicates, pretreated potassium silicates, or at least one selected from them. It is better to use the above mixture. However, it is not limited thereto.

Preferred silanes may be any silanes commonly used in the art, but preferably aminosilanes, vinylsilanes, epoxy silanes, methacrylsilanes, sulfur, alkylsilanes, phenylsilanes and vinyltrimethoxy It is preferable to use silane, tetraethoxysilane (TEOS), or at least one mixture selected from them. However, it is not limited thereto.

On the other hand, the method of producing a modified silane silicate composite by mixing the silicate and the silane with each other is not particularly limited, but it is recommended that the silicate 0.1 to 2 parts by weight based on 100 parts by weight of silicate in the temperature range of 95 to 110 ℃ Dilution at includes stirring for 1-2 hours at a rate of 200-400 rpm.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of sorbitan monooleic acid ester based on 100 parts by weight of asphalt in order to improve strength and improve waterproofness of the composition.

In another specific aspect, the modified asphalt concrete composition according to the present invention may be applied to the cross-section and / or the structure to which the composition is attached to include 1 to 3 parts by weight of Caustic soda based on 100 parts by weight of asphalt to improve the water resistance. Can be.

In another specific aspect, the modified asphalt concrete composition according to the present invention is based on 100 parts by weight of polyvinylpyrrolidone (polyvinyl pyrrolidone) in order to stably disperse the composition and to absorb and swell moisture to improve the stability of the composition. It may further comprise 5 to 20 parts by weight.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 10 parts by weight of a temperature adjusting additive, which prevents the viscosity from increasing according to temperature, based on 100 parts by weight of asphalt.

Preferred temperature control additives include micro crystalline wax, hydroxy stearic acid, 1,2-hydroxy stearic acid, lauric acid amide, bisamide wax (ethylene bis steramid; Ethylene-Bis-Stearamide), Stearic acid amide, oleic acid amide, ercaic acid amide, N-oleyl stearic acid amide, N-stearyl stearic acid amide, N-stearyl ercarboxylic acid amide or mixtures of at least one or more thereof.

As another specific embodiment, the modified asphalt concrete composition according to the present invention is 3 to 3 parts by weight based on 100 parts by weight of asphalt to improve physical properties such as adhesion and crack resistance, and to increase durability such as salt, freeze-thawing resistance, and abrasion resistance. It may further comprise 15 parts by weight of modified sulfur.

Here, the reformed sulfur refers to sulfur having improved physical properties by adding various substances to sulfur to improve the disadvantage of sulfur (sulfur) to use in various industrial fields.

In this case, the sulfur is one of the non-metal elements is a material that is generated a lot in the desulfurization process of crude oil or natural gas. However, sulfur has a problem in that it dissolves at a temperature of 119 ° C. or higher and is solid at room temperature, has a flash point of 207 ° C., and a spontaneous ignition temperature of 245 ° C., which causes flammability. . In order to solve this drawback, reformed sulfur has been developed.

In one example, the modified sulfur is sulfur such as dicyclo pentadiene (DCPD), vinyl toluene, dipentene, olefin oligomers, tetra hydraulic indene, etc. It can be prepared by adding a modifier.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 5 to 20 parts by weight of gamma-aminopropyltriethoxysilane based on 100 parts by weight of asphalt to improve anti-degradation, heat resistance, hardenability, and the like. have.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 10 parts by weight of itaconic acid based on 100 parts by weight of asphalt in order to maintain the dispersibility and fluidity of the composition for a certain time.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of cobalt sulfate based on 100 parts by weight of asphalt to improve the solubility and dispersibility of the composition.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may contain 1 to 10 sulfoxypolyethylene glycol allyl ether based on 100 parts by weight of asphalt in order to facilitate blending between components constituting the composition and to improve stability of the composition. As may be further included, if the content is less than 1 part by weight based on 100 parts by weight of asphalt is not easy to mix the composition, if it exceeds 10 parts by weight is not good because the stability is excessively reduced.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 10 parts by weight of sodium hexametaphosphate based on 100 parts by weight of asphalt to prevent ionization of the crack composition.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of polysilicon sludge based on 100 parts by weight of asphalt to improve compressive strength.

Here, the polysilicon sludge has a light gray color, discharged at a high moisture content of 62%, low density and light, and a fine powder of 7,122 cm 3 / g. It is composed of SiO ₂ and CaO and contains trace amounts of alkali components K ₂ O and Na ₂ O.

In addition, after the polysilicon sludge was dried at 60 ° C. for at least 24 hours, the obtained crystal phase was composed of CaCO ₃ and contained a small amount of NaCl, a compound of Na ₂ O and Cl.

In another specific embodiment, the modified asphalt concrete composition according to the present invention is to provide a good stability by providing a chemical stability of the composition for a long time storage, prevent rapid hardening during construction to provide excellent quality based on 100 parts by weight of asphalt 1 to 1 It may further comprise 5 parts by weight of styrene-acrylic ester copolymer (Styrene-Acrylic ester copolymer).

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of unsaturated fatty acid based on 100 parts by weight of asphalt to improve the bonding strength between the components of the crack composition.

Here, the unsaturated fatty acid is preferably used a straight chain unsaturated fatty acid having 14 to 18 carbon atoms.

In another embodiment, the modified asphalt concrete composition according to the present invention may further include 5 to 15 parts by weight of water-soluble polysaccharide based on 100 parts by weight of asphalt to improve the flowability of the composition.

In still another aspect, the modified asphalt concrete composition according to the present invention may further include 2 to 10 parts by weight of acetyllatylanolalan based on 100 parts by weight of asphalt to improve waterproofness, heat resistance, flame resistance and adhesion.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 10 parts by weight of polyacrylate salt crosslinked based on 100 parts by weight of asphalt to prevent moisture permeation and improve durability.

The cross-linked polyacrylate salt is to fill the pores of the modified asphalt concrete composition to prevent the penetration of moisture and thereby serves to enhance the durability of the interior, in detail the cross-linked polyacrylate salt It refers to a material crosslinked with the polymer of the acrylate salt, consisting of a copolymer of acrylic acid and sodium acrylate containing acrylic acid (Acrylic acid) as a crosslinking agent, the following (C ₃ H ₄ O ₂ .C Has the molecular formula of ₃ H ₃ O ₂ Na) x.

The cross-linked polyacrylate salt composed of the above-mentioned structure expands upon water penetration when cross-linking between polymer chains is used, or when cross-linked polyacrylate salt is used in accordance with the introduction of hydrophilic groups in a single chain structure. By filling the inner voids to prevent the penetration of moisture, and to enhance the durability.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 10 parts by weight of dibutyl phthalate based on 100 parts by weight of asphalt for uniform mixing.

In another aspect, the modified asphalt concrete composition according to the present invention is a benzoic acid (benzolc) to prevent the modified asphalt concrete composition from being rotted by bacteria, fungi, bacteria and to be oxidized by oxygen in the air at room temperature. acid) may further include 0.1 to 2 parts by weight based on 100 parts by weight of asphalt.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 3 parts by weight of phenylpropanolamine based on 100 parts by weight of asphalt to improve alkali ion promotion.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of ammonium hydroxide based on 100 parts by weight of asphalt to suppress rapid reaction and improve dispersibility when mixing the composition.

In another specific embodiment, the modified asphalt concrete composition according to the present invention further comprises 1 to 10 parts by weight of trizimite, based on 100 parts by weight of asphalt, in order to enhance the strength of the composition and to improve water resistance, salt resistance, freeze thawing, and the like. can do.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of cyclohexane based on 100 parts by weight of asphalt in order to improve the stiffness, stability, binding strength and integrity of the composition.

In another specific embodiment, the modified asphalt concrete composition according to the present invention may further include 0.1 to 10 parts by weight of peat based on 100 parts by weight of asphalt.

Here, the peat has excellent water retention of about 10 times due to the unique fiber structure, thereby improving long-term strength expression and durability of the modified asphalt concrete composition.

Referring to the modified asphalt concrete composition construction method according to the present invention having such a configuration as follows.

Here, the method for constructing the modified asphalt concrete composition is not particularly limited, but preferably, removing the foreign substance-cleaning step of removing the foreign substance on the surface;

On the surface of the foreign material removal-cleaning step is completed, based on 100 parts by weight of asphalt, styrene isoprene styrene 1 to 25 parts by weight, hydrogenated petroleum resin 1 to 25 parts by weight, aggregate 500 to 2,000 parts by weight, fine powder aggregate 30 to A casting step of pouring the modified asphalt concrete composition comprising 150 parts by weight, 0.5 to 10 parts by weight of modifier, 0.5 to 25 parts by weight of ethylene-propylene copolymer, 0.1 to 2 parts by weight of cellulose fiber, and 0.1 to 2 parts by weight of wax; A compaction step of compacting work after the reforming asphalt concrete composition pouring step is completed; And

It may include a curing step of curing after the compaction step is finished.

Hereinafter, the present invention will be described in detail through examples. However, the following examples are only for illustrating the present invention in detail and do not limit the scope of the present invention by these examples.

Example 1

100 g of asphalt mixture composed of a mixture of 75 g of straight asphalt with a penetration of 30 g and 25 g of natural asphalt consisting of Trinidad and Drake asphalt, 16 g of styrene isoprene styrene having an elongation of about 850%, 20 g of hydrogenated dicyclopentadiene-based oil resin, and an average particle size of about 3 mm. Phosphorus gravel and gravel with an average particle size of about 5 mm are aggregated at a weight ratio of 5: 5, 1,200 g of aggregate, 80 g of fine powder aggregate made of limestone with an average particle size of about 0.03 mm, and natural rubber and polyethylene at a weight ratio of 1: 1. A modified asphalt concrete composition was prepared by mixing 6 g of mixed modifier, 13 g of ethylene-propylene copolymer composed of Vistamaxx ^™ 8380 (ExonMobil Chemical Co., Ltd.), 1 g of natural cellulose fiber, and 1 g of polyethylene wax.

Example 2

The same procedure as in Example 1 was carried out, except that 1 g of a mixture of modified fatty acids obtained by melting and reacting polyethylene wax with 12 to 24 carbon atoms with calcium hydroxide instead of 1 g of polyethylene wax was mixed at a weight ratio of 1: 0.5.

Example 3

The same procedure as in Example 1 was conducted except that 8 g of ethylene-glycidyl methacrylate copolymer was further added.

Example 4

The same procedure as in Example 1 was conducted except that 7 g of aminomethylpolydimethylsiloxane was further added.

Example 5

The same procedure as in Example 1 was carried out except that 5 g of tetraethylenepentamine was further added.

Example 6

The same procedure as in Example 1 was carried out except that 3 g of sodium fluoride was further added.

Example 7

The same procedure as in Example 1 was conducted except that 7 g of perfluoromethoxysilane was further added.

Example 8

The same procedure as in Example 1 was conducted except that 12 g of poly-iso-butylene was further added.

Example 9

The same procedure as in Example 1 was conducted except that 5 g of acrylonitrile was added.

Example 10

The same procedure as in Example 1 was conducted except that 9 g of dimethyl ammonium chloride was further added.

Example 11

The same procedure as in Example 1 was conducted except that 3 g of tetramethylene diisocyanate was added.

Example 12

The same procedure as in Example 1 was carried out except that 3 g of trimethylolpropane triacrylate was further added.

Example 13

The same procedure as in Example 1 was conducted except that 1 g of starch phosphate ester was further added.

Example 14

The same procedure as in Example 1 was conducted except that 3 g of carboxymethylcellulose was further added.

Example 15

The same procedure as in Example 1 was conducted except that 3 g of ammonium noniphenol ether sulfate was further added.

Example 16

The same procedure as in Example 1 was conducted except that 2 g of zinc sulfate was added.

Example 17

The same procedure as in Example 1 was conducted except that 2 g of polyindolocarbazole was further added.

Example 18

The same procedure as in Example 1 was conducted except that 8 g of aluminum silicate powder having a size of about 70 micrometers was added thereto.

Example 19

The same procedure as in Example 1 was conducted except that 3 g of polymethylsilsesuccioxane was further added.

Example 20

The same procedure as in Example 1 was carried out except that 3 g of sodium oleate was further added.

Example 21

The same procedure as in Example 1 was carried out except that 3 g of magnesium silicate was further added.

Example 22

3 g of modified silane silicate composite prepared by mixing lithium silicate and aminosilane in a weight ratio of 1: 0.1 and then stirring the mixture at about 100 ° C. at a speed of about 300 rpm for about 1 hour 30 minutes. It was further added.

Example 23

It carried out by the same method as Example 1, but it carried out by adding 3 g of sorbitan monooleic acid ester further.

Example 24

The same procedure as in Example 1 was carried out except that 2 g of cascading soda was added.

Example 25

The same procedure as in Example 1 was carried out except that 12 g of polyvinylpyrrolidone was further added.

Example 26

The same procedure as in Example 1 was conducted except that 5 g of microcrystalline wax was added.

Example 27

The same procedure as in Example 1 was conducted except that 8 g of modified sulfur prepared by adding dicyclopentadiene was added to sulfur.

Example 28

The same procedure as in Example 1 was conducted except that 12 g of gamma-aminopropyltriethoxysilane was further added.

Example 29

The same procedure as in Example 1 was conducted except that 5 g of itaconic acid was further added.

Example 30

The same procedure as in Example 1 was carried out except that 3 g of cobalt sulfate was further added.

Example 31

The same procedure as in Example 1 was carried out except that 5 g of sulfoxypolyethylene glycol allyl ether was further added.

Example 32

The same procedure as in Example 1 was conducted except that 5 g of sodium hexametaphosphate was further added.

Example 33

The same procedure as in Example 1 was carried out except that 3 g of polysilicon sludge was added.

Example 34

It carried out in the same manner as in Example 1, it was carried out by further comprising 3g of styrene-acrylic ester copolymer.

Example 35

It carried out in the same manner as in Example 1, it was carried out by further comprising 3g of linear unsaturated fatty acid having 14 to 18 carbon atoms.

Example 36

The same procedure as in Example 1 was conducted except that 10 g of polysaccharide was further added.

Example 37

The same procedure as in Example 1 was carried out except that 6 g of acetyllactolanol was added.

Example 38

The same procedure as in Example 1 was carried out except that 5 g of a crosslinked polyacrylate salt was further added.

Example 39

The same procedure as in Example 1 was conducted except that 5 g of dibutyl phthalate was further added.

Example 40

The same procedure as in Example 1 was conducted except that 1 g of benzoic acid was further added.

Example 41

The same procedure as in Example 1 was conducted except that 2 g of phenylpropanolamine was further added.

Example 42

The same procedure as in Example 1 was conducted except that 2 g of ammonium hydroxide was added.

Example 43

The same procedure as in Example 1 was conducted except that 2 g of trizimite was added.

Example 44

The same procedure as in Example 1 was carried out except that 2 g of cyclohexane was added.

Example 45

The same procedure as in Example 1 was carried out except that 2 g of peat was added.

Example 46

The same procedure as in Example 1 was carried out except that all of the additives added according to Examples 3 to 45 were further added.

[Experiment]

After the asphalt layer having a thickness of about 60 mm was prepared using the composition prepared according to the Examples, low-temperature (at -10 ° C) hardenability, cracking property, indirect tensile strength, deformation strength, rotational viscosity, and rotational viscosity were measured. , About 50mm thick asphalt layer was prepared to measure the dynamic stability as shown in Table 1 shown in Table 1.

Here, the dynamic stability was measured by the deformation test and the test by Kim Test to evaluate the plastic deformation resistance, the indirect tensile strength was carried out to evaluate the crack resistance, and the compressive strength was measured by the asphalt compressive strength tester.

Gelation / 1hr
(at -10 ℃) Cracking degree Dynamic stability
(pass / mm) Indirect tensile strength
(ITS) Deformation strength
(Mpa) Rotational viscosity 115 ℃ 125 ℃ 135 ℃ Example 1 66 none 1881 0.87 5.62 4721 2534 1364 Example 2 66 none 1872 0.90 5.53 4944 3623 1558 Example 3 67 none 1903 0.86 5.89 5547 2954 1660 Example 4 66 none 1874 0.85 5.93 5729 4091 1732 Example 5 67 none 1963 0.87 5.88 5857 3445 1648 Example 6 68 none 1954 0.85 5.81 4839 3248 1493 Example 7 67 none 1921 0.92 5.88 6021 3675 1821 Example 8 65 none 1880 0.91 5.94 5949 2341 1737 Example 9 64 none 1859 0.95 5.89 5350 2884 1565 Example 10 67 none 1922 0.93 5.82 5798 3665 1784 Example 11 66 none 1941 0.87 5.67 6633 3141 2060 Example 12 68 none 1934 0.89 5.69 6583 3136 1920 Example 13 67 none 1923 0.88 5.55 5927 2932 1658 Example 14 65 none 1873 0.86 5.71 6293 3661 1941 Example 15 68 none 1985 0.87 5.72 4113 2115 1459 Example 16 66 none 1992 0.88 5.42 5239 2351 1633 Example 17 67 none 1985 0.90 5.78 4620 2690 1379 Example 18 66 none 1879 0.86 5.85 4449 2587 1281 Example 19 67 none 1852 0.85 6.02 6021 3619 1871 Example 20 67 none 1932 0.86 5.95 5759 2932 1460 Example 21 64 none 1883 0.85 5.86 5429 4492 1732 Example 22 66 none 1971 0.87 5.89 5867 3436 1848 Example 23 67 none 1950 0.86 5.76 4839 3233 1893 Example 24 66 none 1972 0.89 5.51 5367 2914 1658 Example 25 66 none 1979 0.87 5.53 6193 3673 1932 Example 26 68 none 1892 0.86 5.49 4343 2117 1459 Example 27 68 none 1881 0.89 5.55 4293 2356 1533 Example 28 67 none 1829 0.85 5.56 4136 2691 1693 Example 29 67 none 1931 0.89 5.65 5604 3673 2031 Example 30 66 none 1864 0.91 5.57 6010 2481 1859 Example 31 68 none 1923 0.84 5.81 5433 2836 1730 Example 32 65 none 1933 0.88 6.03 6221 3677 2012 Example 33 67 none 1892 0.87 6.24 4693 2461 1674 Example 34 67 none 1963 0.84 5.91 4984 2859 1829 Example 35 65 none 1949 0.86 6.03 6031 3674 2017 Example 36 67 none 1941 0.85 5.74 5839 2363 1830 Example 37 66 none 1962 0.87 5.84 5550 2892 1676 Example 38 67 none 1942 0.86 5.80 5892 3675 1690 Example 39 68 none 1919 0.85 5.79 6434 3141 1811 Example 40 66 none 1982 0.91 5.74 6430 4129 1759 Example 41 67 none 1952 0.87 5.80 6032 3679 2018 Example 42 66 none 1951 0.85 5.81 5838 2364 1839 Example 43 66 none 1963 0.86 5.82 5551 2889 1678 Example 44 68 none 1952 0.89 5.81 5889 3667 1688 Example 45 67 none 1928 0.84 5.80 6435 3142 1812 Example 46 67 none 1981 0.92 5.73 6432 3888 1760

As shown in Table 1, the low temperature curability, cracking property, dynamic stability, indirect tensile strength and deformation strength of the embodiments using the asphalt concrete composition are good, and the rotational viscosity is at least 1200 or more at 110 to 130 ° C. Asphalt concrete composition was confirmed that can be utilized in the medium temperature range.

As described above, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, it should be understood that the embodiments described above are all illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention all changes or modifications derived from the meaning and scope of the claims to be described later rather than the detailed description and equivalent concepts thereof.

Claims (5)

Based on 100 parts by weight of asphalt,
1 to 25 parts by weight of styrene isoprene styrene;
1 to 25 parts by weight of hydrogenated petroleum resin;
Aggregate 500 to 2,000 parts by weight;
30 to 150 parts by weight of fine powder aggregate;
0.5 to 10 parts by weight modifier;
0.5 to 25 parts by weight of an ethylene-propylene copolymer;
0.1 to 2 parts by weight of cellulose fiber; And
In modified asphalt concrete composition comprising 0.1 to 2 parts by weight of wax,
Further comprising 1 to 5 parts by weight of the modified silane silicate composite based on 100 parts by weight of asphalt,
Reformed sulfur further includes 3 to 15 parts by weight based on 100 parts by weight of asphalt,
Gamma-aminopropyltriethoxysilane further comprises 5 to 20 parts by weight based on 100 parts by weight of asphalt,
Itaconic acid further comprises 1 to 10 parts by weight based on 100 parts by weight of asphalt,
Cobalt sulfate further comprises 1 to 5 parts by weight based on 100 parts by weight of asphalt,
Sulfoxy polyethylene glycol allyl ether further comprises 1 to 10 parts by weight based on 100 parts by weight of asphalt,
Sodium hexametaphosphate further comprises 1 to 10 parts by weight based on 100 parts by weight of asphalt,
Polysilicon sludge further comprises 1 to 5 parts by weight based on 100 parts by weight of asphalt,
Further comprising a water-soluble polysaccharide 5 to 15 parts by weight based on 100 parts by weight of asphalt,
Acetylatydranolan further comprises 2 to 10 parts by weight based on 100 parts by weight of asphalt,
Crosslinked polyacrylate salt further comprises 1 to 10 parts by weight based on 100 parts by weight of asphalt,
Dibutyl phthalate further comprises 1 to 10 parts by weight based on 100 parts by weight of asphalt,
Benzoic acid further comprises 0.1 to 2 parts by weight based on 100 parts by weight of asphalt,
Further comprising 1 to 3 parts by weight of phenylpropanolamine based on 100 parts by weight of asphalt,
Ammonium hydroxide further comprises 1 to 5 parts by weight based on 100 parts by weight of asphalt,
Further comprises 1 to 10 parts by weight of trizimite based on 100 parts by weight of asphalt,
Cyclohexane further comprises 1 to 5 parts by weight based on 100 parts by weight of asphalt,
Modified asphalt concrete composition further comprises peat in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of asphalt.
delete delete delete A foreign material removal-cleaning step of removing and cleaning the foreign material on the surface;
On the surface of the foreign material removal-cleaning step is completed based on 100 parts by weight of asphalt, styrene isoprene styrene 1 to 25 parts by weight, hydrogenated petroleum resin 1 to 25 parts by weight, aggregate 500 to 2,000 parts by weight, fine powder aggregate 30 to The modified silane silicate composite is added to a modified asphalt concrete composition comprising 150 parts by weight, 0.5 to 10 parts by weight of modifier, 0.5 to 25 parts by weight of ethylene-propylene copolymer, 0.1 to 2 parts by weight of cellulose fiber, and 0.1 to 2 parts by weight of wax. 1 to 5 parts by weight based on 100 parts by weight of asphalt, further comprising 3 to 15 parts by weight based on 100 parts by weight of asphalt, and 5 to 5 parts by weight of gamma-aminopropyltriethoxysilane based on 100 parts by weight of asphalt. Further 20 parts by weight, itaconic acid further comprises 1 to 10 parts by weight based on 100 parts by weight of asphalt, asphalt cobalt sulfate It further comprises 1 to 5 parts by weight based on 100 parts by weight, further comprises 1 to 10 parts by weight of sulfoxypolyethylene glycol allyl ether based on 100 parts by weight of asphalt, 1 to 10 based on 100 parts by weight of sodium hexametaphosphate Further comprising by weight, Polysilicon sludge further comprises 1 to 5 parts by weight based on 100 parts by weight of asphalt, Water soluble polysaccharide further comprises 5 to 15 parts by weight based on 100 parts by weight of asphalt, Acetylatylanolane To 2 to 10 parts by weight based on 100 parts by weight of asphalt, further comprises 1 to 10 parts by weight of the cross-linked polyacrylate salt based on 100 parts by weight of asphalt, 1 to 1 based on 100 parts by weight of dibutyl phthalate asphalt Further comprising 10 parts by weight, further comprising benzoic acid in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of asphalt, phenylpropa 1 to 3 parts by weight based on 100 parts by weight of asphalt, further comprises 1 to 5 parts by weight of ammonium hydroxide based on 100 parts by weight of asphalt, 1 to 10 parts by weight of trizimite based on 100 parts by weight of asphalt. Further comprising, the pouring step of pouring modified asphalt concrete composition further comprises cyclohexane in 1 to 5 parts by weight based on 100 parts by weight of asphalt, and 0.1 to 10 parts by weight of peat based on 100 parts by weight of asphalt; A compaction step of compacting work after the reforming asphalt concrete composition pouring step is completed; And
Method for constructing a modified asphalt concrete composition comprising a curing step of curing after the compaction step is completed.