KR102252921B1 - Multi functional asphalt composition for road pavement with fine dust absorption, waterproof, snow removing and insulation effect and the deteriorated asphalt road pavement reparing method thereof - Google Patents

Abstract

The present invention relates to a multifunctional asphalt road packing material composition having fine dust adsorption, waterproof, snow removal and heat shielding effects, and to an aged asphalt road pavement repair method using the same. The multi-functional asphalt road packing material composition is made to include an asphalt road packing material composition for a surface layer and an asphalt road packing material composition for an intermediate layer.

Description

Multi functional asphalt composition for road pavement with fine dust absorption, waterproof, snow removing and insulation effect and the deteriorated asphalt road pavement reparing method thereof}

The present invention relates to a multi-functional asphalt road paving material composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, and an old asphalt road pavement repair method using the same, and more particularly, to a mixed asphalt mixture of emulsified asphalt and cutback asphalt, Modified asphalt binder formed by mixing EVA (ethylene vinyl acetate) resin in a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and aqueous polyurethane resin with a reactive emulsifier and polymerization accelerator, and a particle size of 5 to 12 mm Mixed aggregates including natural aggregates and steelmaking slag, at least one filler selected from cement, stone powder, calcium carbonate, and fly ash, silica powder having a particle size of 1-10 μm, and titanium dioxide (TiO ₂ ) Asphalt road pavement composition for a surface layer comprising a; Ethylene vinyl acetate (EVA) resin is mixed with a mixed asphalt mixture of emulsified asphalt and cutback asphalt, and a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and water-based polyurethane resin with a reactive emulsifier and polymerization accelerator. Mixed aggregate including modified asphalt binder, processing oil, fluxing oil, vegetable oil, natural aggregate having a particle size of 5 to 12 mm and steel slag, cement, stone powder, A multi-functional asphalt road paving material composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, including; an intermediate layer asphalt road pavement composition comprising at least one filler selected from calcium carbonate and fly ash, and an aged asphalt road using the same It is about the pavement repair method.

In general, road pavement is mainly concrete pavement or asphalt pavement. Among them, concrete pavement has a long curing time and a very complicated process such as joint installation, but it is widely used because it has good adaptability to heavy vehicles and has a long common life.

However, concrete pavement requires periodic maintenance of the joints, the maintenance time is long, and the maintenance cost is also high. In addition, concrete pavement is rarely applied to urban roads with heavy traffic due to problems such as poor ride comfort due to noise and joints, and the use of concrete pavement is gradually decreasing even on highways where concrete pavement was preferred.

On the other hand, asphalt pavement has low adaptability to heavy vehicles, plastic deformation, cracks, potholes, etc. frequently occur, resulting in relatively short common life, resulting in frequent repairs and obstacles to traffic communication. It is used in many places such as urban roads due to its rapidity, simplicity, and low-cost maintenance.

Meanwhile, the asphalt pavement material may be classified into a premix type or a plant mix type according to a manufacturing process. The pre-mix type is a method of using modified asphalt, which is mixed with asphalt and a modifier in advance in a melting facility, with aggregate at an asphalt concrete plant and used for road construction. This method is mainly used for paving roads.

However, since the premix type is used after melting and mixing the asphalt and the modifier in a large amount in advance at high temperature, the phases of the modifier and the asphalt are separated during storage, causing deterioration of performance. Even if used immediately, the modified asphalt may age during transport to an ascon plant, resulting in deterioration of physical properties.

On the other hand, unlike the pre-mix type, the plant mix type does not prepare modified asphalt in advance and mixes the asphalt, aggregate and modifier at the asphalt concrete plant, so it does not cause phase separation problems during storage or aging problems during transport. Since it can be manufactured, there is an advantage that it can be used for short section pavement or road maintenance pavement.

The plant mix-type asphalt pavement material is obtained by melting and stirring the asphalt, aggregate, and modifier together at high temperature, and the conventional modifier is not completely melted during this process, and a part of the asphalt pavement material remains in a solid form, causing defects in the pavement. there is a problem.

In addition, such asphalt pavement has problems due to the following causes during and after construction. During construction, there is a problem of plastic deformation due to representative causes such as poor temperature control, poor tack coat usage and spraying, poor mixture compaction, etc. when laying asphalt mixture.After construction, not only long-term use, traffic load, ground behavior, but also There is a problem due to the invasion of icing, thawing, and chloride that removes freezing.

In order to solve the above-described conventional problems, recently modified asphalt pavement composition and repair agent composition, and asphalt pavement method and repair method using the same have been developed. As a method of repairing the old road surface by using a general-purpose urethane asphalt binder as a single repair material in repair equipment, the general-purpose urethane asphalt binder is a polyol, an amine-based hardener, a compatibilizer, an antifoaming agent, an interlayer adhesion promoter, a catalyst, and It is a two-component room-temperature construction binder containing a curing agent (A) containing process oil and a subject (B) containing asphalt, process oil, and pre-polymer, and the portable repair equipment is a manual gun (manual gun). ), a 2-way gun including a plurality of packaging containers (cartridges) and a head mixer, and a first step in which pretreatment is performed by removing impurities from the damaged old road surface; A second step of adjusting the equivalent ratio or volume ratio of the curing agent (A) and the main material (B) of the universal urethane asphalt binder used for the damaged part of the pretreated aged road surface by adjusting the size of the packaging container; And a third step in which a general-purpose urethane asphalt binder in which a curing agent (A) and a main material (B) are mixed through the mixing outlet is installed on the damaged part of the pretreated aged road surface. A method of repairing the surface of a small-scale aged road using a general-purpose urethane asphalt binder comprising a is known.

In addition, in Korean Patent Registration 10-1498661 (registration date February 26, 2015), it is composed of a base layer, an intermediate layer, and a surface layer, but the impermeable asphalt mixture forming the intermediate layer is 5-20 weight of a mixture of polymer-modified asphalt and natural asphalt. % And 80 to 95% by weight of a mixture of sand, aggregate, and stone powder are mixed and melted at a temperature of 170°C to 220°C to form a mixture, wherein the mixture of the impermeable asphalt mixture forming the intermediate layer is polymer-modified asphalt. Consists of a mixture of 30 to 75% by weight of natural asphalt with respect to 100, and the mixture is a mixture of sand and aggregate at a storage temperature of 90 to 130°C in an asphalt plant for 45 to 120 seconds to form a final asphalt mixture. After laying at a laying temperature of 160 to 220°C, an impermeable asphalt paving method using natural asphalt is known, characterized in that the laid asphalt compression porosity is 0 to 2%.

In addition, based on 100 parts by weight of asphalt in Korea Patent Registration 10-1663588 (registration date September 30, 2016), 0.1 to 10 parts by weight of seaweed; 10 to 1,000 parts by weight of aggregate; Polyester, thermoplastic polyurethane elastomer (TPU), methyl methacrylate, styrene isoprene styrene, styrene butadiene rubber, styrene butadiene styrene, ethylene vinylacetic acid copolymer, polyamide, melamine resin, alkyd resin, unsaturated polyester resin, poly 10 to 70 parts by weight of a polymer powder resin, which is a urethane resin, a phenol resin, an epoxy resin, a silicone resin, or a mixture of at least two or more selected from these; 2 to 30 parts by weight of a curing agent; 30 to 80 parts by weight of a glycidyl methacrylate resin; 10 to 40 parts by weight of nanoceramic particles; 5 to 40 parts by weight of silicate; 5 to 30 parts by weight of an adhesion promoter; And in the waterproof asphalt concrete layer composition comprising 2 to 20 parts by weight of fiber, sodium benzoate is further included in an amount of 0.1 to 1 parts by weight based on 100 parts by weight of asphalt, and a dimer acid is further included in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of asphalt. Including, further comprising 1 to 10 parts by weight of tetraethylenepentamine based on 100 parts by weight of asphalt, ethylene propylene diene monomer (EPDM), polyurethane (PU), one or more anti-slip chips selected from waste tires as asphalt It further comprises 10 to 30 parts by weight based on 100 parts by weight, further comprising at least one selected from carbon black, cadmium yellow, cadmium red, cobald blue, chromium oxide or calcium carbonate in 5 to 10 parts by weight based on 100 parts by weight of asphalt A waterproof asphalt concrete layer composition comprising is known.

In addition, 90 to 97% by weight of aggregate in Korea Patent Registration 10-1849311 (registration date April 10, 2018); 1 to 6% by weight of the filling material; Binder 1-7% by weight; Including, the porosity is 3.5-7%, and the aggregate is 0.15 parts by weight of steel slag having a maximum particle diameter of 10mm, 0.15 parts by weight of recycled aggregate, 0.7 parts by weight of general aggregate based on the weight of the aggregate. Including parts by weight, and the composite particle size of the checker 10mm, 5mm, 2.5mm, 1.2mm, 0.6mm, 0.3mm, 0.15mm, 0.08mm, 98~99.7%, 75~80%, 45~57%, respectively , 27 to 40%, 17 to 27%, 10 to 16%, 7 to 9%, 4 to 6%, the filling material is any one or a mixture of two or more of limestone powder, Portland cement, slaked lime, and recovered dust, the The binder is 82 to 90% by weight of general asphalt; 0.1 to 9% by weight of the neutralizing additive; 0.05-2% by weight of a corrosion inhibitor; And 1 to 17% by weight of a reinforcing agent; wherein the neutralization additive is a mixture of a wax component additive and a polyetheramine component additive in a weight ratio of 1:0.2 to 1:1, and the wax component additive has a melting point of 60°C Any one of the above polyethylene wax or synthetic wax synthesized by the Fischer-Tropsh process, the polyetheramine component has a molecular weight of 800 or more, and the polyetheramine component is made of ethylene oxide and propylene oxide. Containing the formed ether functional group, the corrosion inhibitor is any one of a phenol-based corrosion inhibitor, an amine-based corrosion inhibitor, or a sulfur-based corrosion inhibitor, the reinforcing agent is a by-product of the vacuum distillation process, and the by-product of the vacuum distillation process is a vacuum distillation process. As a hydrocarbon compound with an aromatic content of 50% or more produced in the middle stage of, the by-product of the vacuum distillation process has a flash point of 230°C or more according to ASTM D93, and a viscosity (60°C) according to ASTM D2171 of 1,000 centipoise (cP). ) Asphalt compositions are known, characterized in that the following.

In addition, Korean Patent Registration 10-1992833 (registration date June 19, 2019) includes 52 to 63% by weight of at least one elastomer of polychloroprene, SBS (Styrene-Butadiene-Styrene) and SIS (Styrene-Isoprene-Styrene). ; 31 to 39% by weight of at least one plastomer of at least one of EVA and PVC; 1-5% by weight of processing oil; 1-7% by weight of fluxing oil; 1-7% by weight of vegetable oil; 0.5 to 5.4% by weight of a blowing agent; And 0.1 to 3.8% by weight of a plasticizer; the elastomer and the plastomer are mixed at a weight ratio of 6:3.5 to 4.2, and the elastomer is 13 to 35 parts by weight of polychloroprene, 38 to 61 parts by weight of SBS, and 22 to SIS. Including 40 parts by weight, in a range of 15% by weight or less of the content of the blowing agent, 1-methylpyridinium, 1-ethylpyridinium, 1-butylpyridinium, 1-ethyl-3-methyl pyridinium, 1-butyl- 3-methylpyridinium, 1-hexyl-3-methylpyridinium and 1-butyl-3,4-dimethylpyridinium, characterized in that it further comprises one or more pyridinium compounds selected from the group consisting of, plant mix type Low noise drainage asphalt modifiers are known.

However, the modified asphalt pavement composition and repair agent composition, as well as the asphalt pavement method and repair method using the same, contain aromatic components, rubber components, heavy metal components, etc. as organic solvents or modifiers, so there were problems that were harmful to the human body during construction. , Water-penetrating cracking, which is a chronic problem of conventional asphalt pavement, was insufficient in waterproofing performance and heat shielding performance to prevent heat island effect in summer, snow removal effect in winter, and especially, reducing fine dust generated in road traffic. Since there is no function that can be done, there has been a problem that further aggravates the problem of fine dust generation.

[Patent Document 001] Korean Patent Registration 10-1284756 (Registration Date July 4, 2013) [Patent Document 002] Korean Patent Registration 10-1498661 (Registration Date February 26, 2015) [Patent Document 003] Korean Patent Registration 10-1663588 (Registration Date September 30, 2016) [Patent Document 004] Korean Patent Registration 10-1849311 (Registration Date April 10, 2018) [Patent Document 005] Korean Patent Registration 10-1992833 (Registration Date June 19, 2019)

In order to solve the above problems, the present invention relates to a polymerization composition obtained by emulsification polymerization of a mixed asphalt mixture of emulsified asphalt and cutback asphalt, a methyl methacrylate (MMA) resin, and a water-based polyurethane resin together with a reactive emulsifier and a polymerization accelerator. (Ethylene vinyl acetate) A modified asphalt binder formulated by blending resin, a natural aggregate having a particle size of 5 to 12 mm and a mixed aggregate including steelmaking slag, and one selected from cement, stone powder, calcium carbonate, and fly ash Asphalt road pavement composition for a surface layer comprising the above filling material, silica powder having a particle size of 1-10um, and titanium dioxide (TiO _{2 );} Ethylene vinyl acetate (EVA) resin is mixed with a mixed asphalt mixture of emulsified asphalt and cutback asphalt, and a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and water-based polyurethane resin with a reactive emulsifier and polymerization accelerator. Mixed aggregate including modified asphalt binder, processing oil, fluxing oil, vegetable oil, natural aggregate having a particle size of 5 to 12 mm and steel slag, cement, stone powder, A multi-functional asphalt road paving material composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, including; an intermediate layer asphalt road pavement composition comprising at least one filler selected from calcium carbonate and fly ash, and an aged asphalt road using the same The problem to be solved is to provide a packaging repair method.

In order to solve the above problems, the present invention is an EVA in a polymerization composition obtained by emulsion polymerization of a mixed asphalt mixture of emulsified asphalt and cutback asphalt, MMA (methyl methacrylate) resin, and aqueous polyurethane resin together with a reactive emulsifier and a polymerization accelerator. (Ethylene vinyl acetate) A modified asphalt binder formulated by blending resin, a natural aggregate having a particle size of 5 to 12 mm and a mixed aggregate including steelmaking slag, and one selected from cement, stone powder, calcium carbonate, and fly ash Asphalt road pavement composition for a surface layer comprising the above filling material, silica powder having a particle size of 1-10um, and titanium dioxide (TiO _{2 );} Ethylene vinyl acetate (EVA) resin is mixed with a mixed asphalt mixture of emulsified asphalt and cutback asphalt, and a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and water-based polyurethane resin with a reactive emulsifier and polymerization accelerator. Mixed aggregate including modified asphalt binder, processing oil, fluxing oil, vegetable oil, natural aggregate having a particle size of 5 to 12 mm and steel slag, cement, stone powder, A multi-functional asphalt road pavement composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, including; an intermediate layer asphalt road pavement composition comprising at least one filler selected from calcium carbonate and fly ash as a solution to the problem. do,

The reactive emulsifier used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is sodium dodecylbenzene sulfonate (SDBS), which is an anionic reactive emulsifier, sodium polyoxyethylene alkylphenyl ether sulfate (Sodium). Polyoxyethylene alkyl phenyl ether sulfate (SPAS), polyoxyethylene nonylphenyl ether (Polyoxyethylene nonylphenyl ether; POENPE), a nonionic reactive emulsifier, is used as a solution to the problem.

The polymerization accelerator used in the asphalt road pavement composition for the surface layer and the asphalt road pavement material composition for the intermediate layer is dimethyl aniline as a means of solving the problem.

The mixed aggregate used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is composed of the natural aggregate and steelmaking slag in the same weight ratio, respectively, as a solution to the problem.

The filling material used in the asphalt road paving composition for the surface layer and the asphalt road paving material composition for the intermediate layer is composed of cement, stone powder, calcium carbonate, and fly ash in the same weight ratio, respectively, as a solution to the problem.

The modified asphalt oil used in the asphalt road pavement composition for the intermediate layer is a solution to the problem to be formed by mixing processing oil, fluxing oil, and vegetable oil at the same weight ratio, respectively.

The processing oil is selected from one or more of paraffinic oil, naphthane oil, or aromatic oil, and hydroline is used as the fluxing oil, and the vegetable oil is palm oil, palm oil, corn oil, soybean One or more of oil, linseed oil, and castor oil is selected as a means of solving the problem.

In the modified asphalt binder of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer, a carboxylates fluidizing agent having at least one polar group in a molecule, a polycarboxylic acid fluidizing agent, or The solution to the problem is to further include a fluidizing agent selected from melamine-based fluidizing agents.

The fluidizing agent is selected from the group consisting of lignosulfonate, hydroxypolycarboxylic acid, naphthalene formaldehyde sulfonate, and melamine formaldehyde sulfonate as a means of solving the problem.

The modified asphalt binder of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer contains epichlorohydrine and bisphenol-A epoxy resin in a 1:1 weight ratio and polyamide. The solution to the problem is to further include an epoxy resin composition mixed with a curing agent as a reinforcing agent.

The epoxy resin composition is used for adhesion, waterproofing, crack prevention, abrasion resistance, weather resistance, and weather resistance reinforcement of the asphalt road paving material composition for the surface layer and the asphalt road paving material composition for the intermediate layer as a solution to the problem.

In addition, the present invention includes the steps of exposing the base layer by chipping cracks and damaged portions of the existing asphalt road pavement surface; A high pressure washing step for removing foreign substances or debris from the exposed base layer surface; Installing the intermediate layer while heating and mixing the asphalt road paving material composition for the intermediate layer on the washed base surface to construct an intermediate layer; Installing the asphalt road pavement composition for the surface layer while heating and mixing the surface layer on the surface of the intermediate layer to construct a surface layer; and a method of repairing the old asphalt road pavement, including, as a means of solving the problem,

The multifunctional asphalt road pavement composition having fine dust adsorption, waterproofing, snow removal, and heat shielding effects of the present invention, and the repairing method for old asphalt road using the same, include mixed asphalt mixed with emulsified asphalt and cutback asphalt, and MMA (methyl methacrylate). Modified asphalt binder made by mixing EVA (ethylene vinyl acetate) resin in a polymerization composition obtained by emulsion polymerization of resin and water-based polyurethane resin with reactive emulsifier and polymerization accelerator, natural aggregate and steel slag having a particle size of 5 to 12 mm For a surface layer composed of a mixed aggregate containing, and at least one filler selected from cement, stone powder, calcium carbonate, and fly ash, silica powder having a particle size of 1-10 μm, and titanium dioxide (TiO ₂₎ Asphalt road paving material composition; Ethylene vinyl acetate (EVA) resin is mixed with a mixed asphalt mixture of emulsified asphalt and cutback asphalt, and a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and water-based polyurethane resin with a reactive emulsifier and polymerization accelerator. Mixed aggregate including modified asphalt binder, processing oil, fluxing oil, vegetable oil, natural aggregate having a particle size of 5 to 12 mm and steel slag, cement, stone powder, Including; an asphalt road pavement composition for an intermediate layer comprising at least one filler selected from calcium carbonate and fly ash; and optionally, an epoxy resin composition is used for reinforcing adhesion, waterproofing, crack prevention, abrasion resistance, weather resistance, and weather resistance. By doing so, it has excellent effects of adsorbing fine dust, waterproofing, snow removal, and heat shielding, as well as improving physical properties of road pavement such as crack prevention and abrasion resistance.

1 is a cross-sectional view showing the structure of an asphalt road pavement using a multifunctional asphalt road pavement composition having fine dust adsorption, waterproofing, snow removal and heat shielding effects of the present invention
Figure 2 is a photograph showing a comparison of the snow removal performance of the asphalt road pavement material of the present invention

The present invention is an EVA (ethylene vinyl acetate) resin in a polymerization composition obtained by emulsion polymerization of a mixed asphalt mixture of emulsified asphalt and cutback asphalt, MMA (methyl methacrylate) resin and aqueous polyurethane resin together with a reactive emulsifier and a polymerization accelerator. A modified asphalt binder formed by blending, and a mixed aggregate including natural aggregate and steelmaking slag having a particle size of 5 to 12 mm, at least one filler selected from cement, stone powder, calcium carbonate, and fly ash, and 1- An asphalt road pavement composition for a surface layer comprising silica powder and titanium dioxide (TiO _{2) having a particle size of 10 μm;} Ethylene vinyl acetate (EVA) resin is mixed with a mixed asphalt mixture of emulsified asphalt and cutback asphalt, and a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and water-based polyurethane resin with a reactive emulsifier and polymerization accelerator. Mixed aggregate including modified asphalt binder, processing oil, fluxing oil, vegetable oil, natural aggregate having a particle size of 5 to 12 mm and steel slag, cement, stone powder, A multi-functional asphalt road pavement composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, including; an intermediate layer asphalt road pavement composition comprising at least one filler selected from calcium carbonate and fly ash, as a feature of the technical composition. do.

The reactive emulsifier used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is sodium dodecylbenzene sulfonate (SDBS), which is an anionic reactive emulsifier, sodium polyoxyethylene alkylphenyl ether sulfate (Sodium). Polyoxyethylene alkyl phenyl ether sulfate (SPAS), a nonionic reactive emulsifier, polyoxyethylene nonylphenyl ether (POENPE) is any one selected from the feature of the technology configuration.

The polymerization accelerator used in the asphalt road pavement composition for the surface layer and the asphalt road pavement material composition for the intermediate layer is characterized in that it is dimethyl aniline.

The mixed aggregate used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is a characteristic feature of the technical configuration that the natural aggregate and steelmaking slag are mixed in the same weight ratio, respectively.

The filling material used in the asphalt road pavement composition for the surface layer and the asphalt road pavement material composition for the intermediate layer is a characteristic feature of the technical configuration in which cement, stone powder, calcium carbonate, and fly ash are each mixed in the same weight ratio.

The modified asphalt oil used in the asphalt road pavement composition for the intermediate layer is characterized in that it is formed by mixing processing oil, fluxing oil, and vegetable oil at the same weight ratio, respectively.

The processing oil is selected from one or more of paraffinic oil, naphthane oil, or aromatic oil, and hydroline is used as the fluxing oil, and the vegetable oil is palm oil, palm oil, corn oil, soybean The technical composition features at least one selected from oil, linseed oil, and castor oil.

In the modified asphalt binder of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer, a carboxylates fluidizing agent having at least one polar group in a molecule, a polycarboxylic acid fluidizing agent, or It is characterized in that the technical configuration further comprises a fluidizing agent selected from melamine-based fluidizing agents.

The fluidizing agent is characterized in that it is selected from the group consisting of lignosulfonate, hydroxypolycarboxylic acid, naphthalene formaldehyde sulfonate, and melamine formaldehyde sulfonate.

The modified asphalt binder of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer contains epichlorohydrine and bisphenol-A epoxy resin in a 1:1 weight ratio and polyamide. It is a feature of the technical configuration that further comprises an epoxy resin composition mixed with a curing agent as a reinforcing agent.

The epoxy resin composition is characterized in that it is used for adhesion, waterproofing, crack prevention, abrasion resistance, weather resistance, and weather resistance reinforcement of the asphalt road paving material composition for the surface layer and the asphalt road paving material composition for the intermediate layer.

In addition, the present invention includes the steps of exposing the base layer by chipping cracks and damaged portions of the existing asphalt road pavement surface; A high pressure washing step for removing foreign substances or debris from the exposed base layer surface; Heating and mixing the asphalt road paving composition for the intermediate layer on the washed base surface to construct an intermediate layer; The method of repairing old asphalt road pavement including the step of constructing a surface layer by heating and mixing the asphalt road paving material composition for the surface layer on the surface of the intermediate layer while laying it while heating and mixing it.

Hereinafter, embodiments of the present invention and/or drawings will be described in detail so that those of ordinary skill in the art can easily implement the present invention. However, the present invention may be implemented in various different forms, and is not limited to the embodiments and/or drawings described herein.

First, the multifunctional asphalt road pavement composition having fine dust adsorption, waterproofing, snow removal, and heat shielding effects of the present invention comprises mixed asphalt mixed with emulsified asphalt and cutback asphalt, MMA (methyl methacrylate) resin, and water-based polyurethane resin. A modified asphalt binder formulated by mixing EVA (ethylene vinyl acetate) resin in an emulsion-polymerized polymerization composition with a reactive emulsifier and a polymerization accelerator, a natural aggregate having a particle size of 5 to 12 mm, and a mixed aggregate including steelmaking slag, An asphalt road pavement composition for a surface layer comprising at least one filler selected from cement, stone powder, calcium carbonate, and fly ash, silica powder having a particle size of 1-10 um, and titanium dioxide (TiO _{2 );} Ethylene vinyl acetate (EVA) resin is mixed with a mixed asphalt mixture of emulsified asphalt and cutback asphalt, and a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and water-based polyurethane resin with a reactive emulsifier and polymerization accelerator. Mixed aggregate including modified asphalt binder, processing oil, fluxing oil, vegetable oil, natural aggregate having a particle size of 5 to 12 mm and steel slag, cement, stone powder, It comprises; calcium carbonate, an asphalt road pavement composition for an intermediate layer comprising at least one filler selected from fly ash.

At this time, the mixed asphalt of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer may be mixed in a ratio of 40% by weight of emulsified asphalt and 60% by weight of cutback asphalt, and the emulsified asphalt is mixed in excess of 40% by weight. If so, an odor may occur, and if the cutback asphalt is formed to be less than 60% by weight, the hardening rate of the asphalt is lowered, thereby deteriorating the workability.

On the other hand, methylmethacrylate (MMA) resin used as a modified asphalt binder of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer of the present invention is a colorless transparent liquid. -Methacrylic acid is prepared by oxidizing butyl alcohol (Tert-Butyl Alcohol; TBA) in a gaseous state, and then esterified with methanol. That is, a double carbon bond is formed through a polymerization reaction process of acrylic acid and mitacrylic acid ester. It is a reactive resin made to have a chemical formula of CH2=C(CH3)CO2CH3.

Such methyl methacrylate (MMA) resin is a hard type and has flexibility, and when radical polymerization at low temperature shows a property of increasing the proportion of a syndiotactic structure in which the polymer chain structure has continuous regularity, durability It has excellent physical properties such as heat resistance, chemical resistance, abrasion resistance, and UV safety, and has excellent weather resistance, which is a property that withstands weather and climate such as sunlight. By penetrating and integrating, it improves adhesion strength and toughness, has good coloring properties by pigments, etc., has a high coefficient of thermal expansion, but is a resin with very high stability, so it has excellent transparency, weather resistance, and coloring properties, so it is used in many fields.

However, methyl methacrylate (MMA) resin starts curing when a small amount of curing agent is added about 2 to 5% of the amount of the resin, and it is an ultra-fast curing resin that is completely cured within 1 hour after the start of curing. It has excellent workability for about 20 minutes and can be installed and finished over a large area. When using such MMA resin as a coating material composition, its strength is very good after curing, but crack resistance and bending followability are insufficient. In addition, there is a problem that cracks are likely to occur when used outdoors rather than indoors due to different thermal expansion characteristics with the base body.

In the present invention, in order to compensate for the disadvantages of the methyl methacrylate (MMA) resin, the methyl methacrylate (MMA) and aqueous polyurethane resin are emulsion-polymerized together with a reactive emulsifier and a polymerization accelerator. ) Resin was mixed to form a modified asphalt binder.

The aqueous polyurethane (PU) resin is a polymer having a urethane bond (∼NH-COO∼) in the polymer chain by reacting a component having a -NCO group (Isocyanate Group) and a component having a -OH group (Hydroxy Group). It is a polymer synthesized by combining active hydrogen compounds such as divalent or higher isocyanate (Isocynete) and polyol (Polyol).

Polyurethane has a wide selection range of isocyanates and polyols to be used, allowing various product designs from soft to hard, from elastomer to foam, and excellent mechanical strength such as tensile strength, tear strength, elongation, and abrasion resistance, and good workability. It is used as a roof waterproofing material, an indoor gym flooring material, a land track, an adhesive, etc. for clothes, shoes, industrial wheels, and other architectural purposes. In particular, polyurethane resins are widely used as adhesives for plastics, leather, metals, wood, etc. because of their strong adhesion according to the high polarity and reaction characteristics of the isocyanate group, and are also used to exhibit mechanical strength and elasticity in the present invention. .

In other words, by emulsion polymerization of the methyl methacrylate (MMA) and water-based polyurethane resin, it has excellent strength and elasticity, excellent physical properties such as durability and abrasion resistance, and has an elongation more than 5 times superior to MMA resin and crack resistance. Very good modified asphalt binder can be obtained from

In addition, when EVA (ethylene vinyl acetate) resin is used together with the methyl methacrylate (MMA), interfacial adhesion, strength reinforcement, elasticity and airtightness can be improved.

In addition, the modified asphalt oil used in the asphalt road pavement composition for the intermediate layer is preferably formulated by mixing processing oil, fluxing oil, and vegetable oil at the same weight ratio, respectively.

The processing oil is selected from one or more of paraffinic oil, naphthane oil, or aromatic oil, and hydroline is used as the fluxing oil, and the vegetable oil is palm oil, palm oil, corn oil, soybean One or more of oil, linseed oil, and castor oil may be selected.

That is, the processing oil is added to improve processability, and may include at least one of paraffinic oil, naphthane oil, or aromatic oil, and the fluxing oil is extracted immediately before asphalt extraction during petroleum refining. As a liquid oil, it is a mixture of hydrocarbons having a high boiling point, and as a fluxing oil, for example, Hydroline (Hydrolene) may be used.

The fluxing oil is not only more excellent in improving fluidity and workability than processing oil, but also has an effect of improving adhesion, but it is economically disadvantageous due to high cost. For this reason, it is preferable that it is appropriately included so as not to cause the problem of lowering the asphalt commonality at high temperature while obtaining the effect of improving fluidity, workability and adhesion.

The vegetable oil improves fatigue crack resistance at low temperatures, and the vegetable oil may include at least one vegetable oil of palm oil, palm oil, corn oil, soybean oil, linseed oil, and castor oil, but is limited thereto. It is not, and a variety of known vegetable oils can be used.

Meanwhile, the reactive emulsifiers used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer are sodium dodecylbenzene sulfonate (SDBS), which are anionic reactive emulsifiers, and sodium polyoxyethylene alkylphenyl ether sulfate. It is preferable to use any one selected from (Sodium polyoxyethylene alkyl phenyl ether sulfate; SPAS) and polyoxyethylene nonylphenyl ether (POENPE), which is a nonionic reactive emulsifier.

In addition, the polymerization accelerator used in the asphalt road paving composition for the surface layer and the asphalt road paving material composition for the intermediate layer is preferably dimethyl aniline.

In addition, the mixed aggregate used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is preferably composed by mixing the natural aggregate and steelmaking slag in the same weight ratio, respectively.

At this time, the steel slag is a waste generated in the steel making process, and a huge amount is generated every year.Since it contains a large amount of recyclable effective resources such as iron, carbon, limestone, etc., it is possible to recycle it as an aggregate, especially in the present invention. When the heating wire for winter snow removal is buried in the asphalt pavement layer using the steel slag as a mixed aggregate, the heat diffusion is maximized by components such as iron and carbon of the steel making slag, so that the snow removal effect is very excellent. .

The filling material used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is preferably composed by mixing cement, stone powder, calcium carbonate, and fly ash at the same weight ratio, respectively.

In addition, the modified asphalt binder used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer has at least one polar group in the molecule to increase fluidity, a carboxylates fluidizing agent, polycarbon. It is preferable to further include a fluidizing agent selected from an acid-based fluidizing agent or a melamine-based fluidizing agent.

At this time, the fluidizing agent used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is selected from the group consisting of lignosulfonate, hydroxypolycarboxylic acid, naphthalene formaldehyde sulfonate, and melamine formaldehyde sulfonate. Can be.

In addition, the modified asphalt binder used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer contains epichlorohydrine and bisphenol-A epoxy resin in a 1:1 weight ratio. An epoxy resin composition obtained by mixing a main material and a polyamide curing agent may be further included as a reinforcing agent.

At this time, it is preferable to use YD-128 sold by Kukdo Chemical Co., Ltd. for the bisphenol A type epoxy resin, and the physical properties are Epoxy Equivalent 186g/eq, Viscosity (csp at 25℃) 11500-13500, Specific Gravity 1.17g/ Is cm 3.

The epoxy resin composition is used for adhesion, waterproofing, crack prevention, abrasion resistance, weather resistance, weather resistance reinforcement of the multifunctional asphalt road pavement composition having the fine dust absorption, waterproofing, snow removal and heat shielding effect of the present invention.

On the other hand, the surface asphalt road paving material composition of the present invention is characterized by using a silica powder having a particle size of 1-10 um to exhibit a heat shielding effect by the silica powder, and using titanium dioxide (TiO ₂ ) It is characterized by exhibiting the effect of adsorbing fine dust on the asphalt pavement surface.

At this time, the silica powder of 1-10 um is used as a heat shielding material, and the silica powder exhibits a reflectance of 90% or more, and a density is preferably 2.5 to 3.4, and when the density exceeds 3.4, in the waterproofing material composition The sedimentation is separated and there is a problem in that the reflectance cannot be displayed.

In addition, the titanium dioxide may be rutile titanium dioxide. Titanium dioxide (TiO 2) can be used as a fine powder, and it can be used not only in a nano state, that is, in a colloidal state, but also in a liquid state, and adsorbs fine dust and pollutants through the incorporation of titanium dioxide. , Has an effect such as odor removal.

In addition, the present invention includes the steps of exposing the base layer by chipping cracks and damaged portions of the existing asphalt road pavement surface; A high pressure washing step for removing foreign substances or debris from the exposed base layer surface; Installing the intermediate layer while heating and mixing the asphalt road paving material composition for the intermediate layer on the washed base surface to construct an intermediate layer; The asphalt road pavement composition for the surface layer is heated and mixed on the surface of the intermediate layer to install the surface layer to construct the surface layer.

[Preparation of the asphalt road pavement composition for the surface layer and the intermediate layer of the present invention]

After preparing mixed asphalt by mixing 5 kg of emulsified asphalt and 5 kg of cutback asphalt, 2 kg of MMA (methyl methacrylate) resin and 0.5 kg of aqueous polyurethane resin were used as reactive emulsifiers, polyoxyethylene nonylphenyl ether (POENPE) 0.1 kg and 0.5 kg of EVA (ethylene vinyl acetate) resin were mixed in a polymerization composition obtained by emulsion polymerization with 50 g of dimethylaniline (DMA) as a polymerization accelerator to prepare a modified asphalt binder, and then mixed and modified by mixing the mixed asphalt and modified asphalt binder. An asphalt composition was prepared.

In addition, a mixed aggregate is prepared by mixing 50 kg each of natural aggregate and steel slag having a particle size of 5 to 12 mm, and a filling material is prepared by mixing 1 kg of cement, stone powder, calcium carbonate, and fly ash each. After preparing 0.1 kg of silica powder and _{50 g of titanium dioxide (TiO 2} ) having a particle size, stirring and mixing uniformly while heating the prepared mixed modified asphalt composition, and 100 g of epichlorohydrine and bisphenol A (bisphenol-A) An epoxy resin composition in which 100 g of an epoxy resin was mixed and 50 g of a polyamide curing agent were mixed while uniformly stirring to prepare an asphalt road paving material composition for the surface of the present invention.

Meanwhile, 5 kg of emulsified asphalt and 5 kg of cutback asphalt were mixed to prepare a mixed asphalt, and then 2 kg of MMA (methyl methacrylate) resin and 0.5 kg of aqueous polyurethane resin were used as reactive emulsifiers, polyoxyethylene nonylphenyl ether (POENPE). ) A modified asphalt binder was prepared by mixing 0.5 kg of EVA (ethylene vinyl acetate) resin in an emulsion polymerization of 0.1 kg and 50 g of dimethylaniline (DMA) as a polymerization accelerator, and then mixing the mixed asphalt and modified asphalt binder. After preparing a mixed modified asphalt composition, 0.1 kg of oil in which paraffin oil, hydroline, and castor oil were mixed at the same weight ratio were homogeneously mixed to prepare a mixed modified asphalt composition.

In addition, a mixed aggregate was prepared by mixing 50 kg each of natural aggregate and steelmaking slag having a particle size of 5 to 12 mm, and a filler was prepared by mixing 1 kg each of cement, stone powder, calcium carbonate, and fly ash, and then the prepared mixture The modified asphalt composition is stirred and mixed uniformly while heating, and an epoxy resin composition obtained by mixing 100 g of epichlorohydrine and 100 g of bisphenol-A epoxy resin and 50 g of a polyamide curing agent is uniformly mixed therein. Mixing while stirring to prepare an asphalt road paving material composition for an intermediate layer of the present invention.

[Comparative Example 1]

[Preparation of existing asphalt road pavement composition]

After preparing mixed asphalt by mixing 5 kg of emulsified asphalt and 5 kg of cutback asphalt, an asphalt road pavement composition was prepared by mixing 100 kg of natural aggregate having a particle size of 5 to 12 mm while heating.

[Experimental Example 1]

[Specimen production]

The asphalt road pavement composition for the surface layer prepared in [Example 1] and [Comparative Example 1] was compacted on the top of the concrete with a marshall compactor and packed in a size of 300mm×300mm×50mm and a thickness of 20mm to make each specimen, respectively. Fine dust adsorption performance, snow removal performance, heat shielding performance, adhesion strength, and tensile strength were measured, respectively.

[Experimental Example 2]

[Measurement of surface fine dust adsorption performance]

As a means for conducting an experiment under conditions similar to the environment in which fine dust is actually scattered (floating), the specimens of [Example 1] and [Comparative Example 1] were placed inside the apparatus using a method and apparatus for evaluating fine dust collection performance. After placing the dust in the device and scattering the test dust for fine dust (ISO 12103-1, A2 Fine test dust (particle size 0.97㎛ ~ 125㎛)) in the device, the fine dust collected in each specimen is removed under a microscope (Digital microscope). ) As a result of enlarged observation at a magnification of 60 times, as shown in the following [Table 1], the specimen of [Example 1] was significantly collected than the specimen of [Comparative Example 1], and the fine dust adsorption performance of the present invention You can see that this is very excellent.

Test Items Example 1 Comparative Example 1 Fine dust collection (ea) 1,620 850

[Experimental Example 3]

[Surface snow removal performance measurement]

The snow removal effect on the specimens of [Example 1] and [Comparative Example 1] was compared and shown in [Fig. 2]. As shown in [Fig. 2], it can be seen that [Example 1] of the present invention has superior snow removal effect than the existing [Comparative Example 1].

[Experimental Example 4]

[Measurement of surface heat shielding performance]

As a result of irradiating the specimens of [Example 1] and [Comparative Example 1] with an external infrared lamp and measuring the upper surface temperature of the specimen using a PROVA 800 temperature data recorder, as shown in the following [Table 2], [ It can be seen that the specimen of Example 1] has better heat shielding performance than the specimen of [Comparative Example 1].

Test Items Example 1 Comparative Example 1 Specimen upper surface temperature (℃) 46.5 40.3

[Experimental Example 5]

[Measurement of surface adhesion strength]

A load was applied in a direction perpendicular to the adhesive surface of the concrete and the asphalt road pavement composition prepared in [Example 1] and [Comparative Example 1], but the maximum load was measured by a displacement control method to measure the adhesion strength. After storing the specimen in a constant temperature room at 20°C, the specimen was mounted on a tester, and the adhesion was measured by applying hydraulic pressure at a speed of 20mm/min, and the test results are shown in [Table 3]. As a result of the test, both [Example 1] and [Comparative Example 1] satisfied 1.0 MPa, which is the quality standard stipulated in KS F 4042, and [Example 1] was found to have better adhesion strength than [Comparative Example 1]. .

Test Items Example 1 Comparative Example 1 Bond strength (MPa) 1.8 1.3

[Experimental Example 6]

[Measurement of surface tensile strength]

Tensile strength was measured from the indirect tensile strength test, at this time, the speed of the load when measuring the indirect tensile strength was 50 mm/min. Tensile strength measurement results, as shown in [Table 4], the specimen of [Example 1] was found to have better tensile strength than the specimen of [Comparative Example 1].

Test Items Example 1 Comparative Example 1 Tensile strength (MPa) 2.6 2.3

[Example 7]

[Measurement of waterproofness and adhesion strength of intermediate layer]

The asphalt road paving material composition for the intermediate layer prepared in [Example 1] and the composition of [Comparative Example 1] were compacted with a marshall compactor and packed in a size of 300mm×300mm×50mm and a thickness of 20mm to make each specimen, and each of them was waterproof. (KS F 4932) and adhesion strength were measured. As shown in the measurement results [Table 5], it can be seen that [Example 1] is superior to [Comparative Example 1] in terms of waterproofness and adhesion strength.

Test Items Example 1 Comparative Example 1 Waterproof Not pitched Pitched Bond strength (MPa) 2.1 1.3

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments and/or drawings disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain, and the scope of the technical idea of the present invention is not limited by these embodiments and/or drawings. . The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (12)

Ethylene vinyl acetate (EVA) resin is mixed with a mixed asphalt mixture of emulsified asphalt and cutback asphalt, and a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and water-based polyurethane resin with a reactive emulsifier and polymerization accelerator. Modified asphalt binder, mixed aggregate including natural aggregate and steelmaking slag having a particle size of 5 to 12 mm, at least one filler selected from cement, stone powder, calcium carbonate, and fly ash, and a particle size of 1-10 μm An asphalt road pavement composition for a surface comprising a silica powder and titanium dioxide (TiO _{2) having a;} Ethylene vinyl acetate (EVA) resin is mixed with a mixed asphalt mixture of emulsified asphalt and cutback asphalt, and a polymerization composition obtained by emulsion polymerization of MMA (methyl methacrylate) resin and water-based polyurethane resin with a reactive emulsifier and polymerization accelerator. Mixed aggregate including modified asphalt binder, processing oil, fluxing oil, vegetable oil, natural aggregate having a particle size of 5 to 12 mm and steel slag, cement, stone powder, A multifunctional asphalt road pavement composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, comprising; an intermediate layer asphalt road pavement composition comprising at least one filler selected from calcium carbonate and fly ash.
The method of claim 1,
The reactive emulsifier used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is sodium dodecylbenzene sulfonate (SDBS), which is an anionic reactive emulsifier, sodium polyoxyethylene alkylphenyl ether sulfate (Sodium). Polyoxyethylene alkyl phenyl ether sulfate; SPAS), a nonionic reactive emulsifier, polyoxyethylene nonylphenyl ether (POENPE). Multifunctional asphalt road pavement composition
The method of claim 1,
The polymerization accelerator used in the asphalt road pavement composition for the surface layer and the asphalt road pavement material composition for the intermediate layer is dimethyl aniline.
The method of claim 1,
The mixed aggregate used in the asphalt road paving composition for the surface layer and the asphalt road paving material composition for the intermediate layer is composed of the natural aggregate and steelmaking slag in the same weight ratio, respectively. Multifunctional asphalt road pavement composition having
The method of claim 1,
The filling material used in the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer is formed by mixing cement, stone powder, calcium carbonate, and fly ash at the same weight ratio, respectively. Multifunctional asphalt road pavement composition having heat shielding effect
The method of claim 1,
The modified asphalt oil used in the asphalt road pavement composition for the intermediate layer is multifunctional with fine dust adsorption, waterproofing, snow removal and heat shielding effects, characterized in that it is formulated by mixing processing oil, fluxing oil, and vegetable oil at the same weight ratio. Asphalt road pavement composition
The method of claim 6,
The processing oil is selected from one or more of paraffinic oil, naphthane oil, or aromatic oil, and hydroline is used as the fluxing oil, and the vegetable oil is palm oil, palm oil, corn oil, soybean Multifunctional asphalt road pavement composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, characterized in that at least one selected from oil, linseed oil, and castor oil
The method of claim 1,
In the modified asphalt binder of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer, a carboxylates fluidizing agent having at least one polar group in a molecule, a polycarboxylic acid fluidizing agent, or Multifunctional asphalt road pavement composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, characterized in that it further comprises a fluidizing agent selected from melamine-based fluidizing agents
The method of claim 8,
The fluidizing agent is a multifunctional asphalt having fine dust adsorption, waterproofing, snow removal and heat shielding effects, characterized in that it is selected from the group consisting of lignosulfonate, hydroxypolycarboxylic acid, naphthalene formaldehyde sulfonate, and melamine formaldehyde sulfonate. Road pavement composition
The method of claim 1,
The modified asphalt binder of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer contains epichlorohydrine and bisphenol-A epoxy resin in a 1:1 weight ratio and polyamide. Multifunctional asphalt road pavement composition having fine dust absorption, waterproofing, snow removal and heat shielding effects, characterized in that it further comprises an epoxy resin composition mixed with a curing agent as a reinforcing agent
The method of claim 10,
The epoxy resin composition is used for adhesion, waterproofing, crack prevention, abrasion resistance, weather resistance, and weather resistance reinforcement of the asphalt road pavement composition for the surface layer and the asphalt road pavement composition for the intermediate layer. Multi-functional asphalt road pavement composition having an effect
Chipping cracks and damaged parts of the existing asphalt road pavement to expose the base layer; A high pressure washing step for removing foreign substances or debris from the exposed base layer surface; Installing an intermediate layer by heating and mixing the asphalt road pavement composition for an intermediate layer according to any one of claims 1 to 11 on the washed base surface to construct an intermediate layer; A method for repairing aged asphalt road pavement, comprising: constructing a surface layer by heating and mixing the asphalt road pavement composition for a surface layer according to any one of claims 1 to 11 on the surface of the intermediate layer while heating and mixing it.

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