KR102621773B1 - Middle Temperature Modified-Asphalt Concrete Compositions Using Stylene Butadien Stylene and Constructing Methods Using Thereof - Google Patents

Abstract

The present invention is based on 100 parts by weight of asphalt, 1 to 30 parts by weight of styrene butadiene styrene; 1 to 30 parts by weight of petroleum resin; 800 to 1,500 parts by weight of aggregate; 0.1 to 10 parts by weight of a performance improver; 0.1 to 5 parts by weight of nanoceramic particles; 0.1 to 2 parts by weight of cellulose fiber; 0.5 to 5 parts by weight of a medium temperature additive; 0.1 to 5 parts by weight of compatibilizer; and a medium-temperature modified asphalt concrete composition containing 0.1 to 2 parts by weight of an antioxidant and a method of constructing the same.
The medium-temperature modified asphalt concrete composition according to the present invention, specifically the medium-temperature modified asphalt concrete composition containing SBS, is durable, does not easily cause plastic deformation, aging, and/or peeling, and easily performs the pouring process at low cost. In addition to being able to do so, it has the effect of enabling pouring and/or laying at a medium temperature, which is lower than that of general asphalt concrete compositions.

Description

Middle Temperature Modified-Asphalt Concrete Compositions Using Stylene Butadien Stylene and Constructing Methods Using Thereof}

The present invention relates to a medium-temperature modified asphalt concrete composition, and more specifically, to a medium-temperature modified asphalt concrete composition containing SBS, which improves the physical properties of asphalt concrete while being workable in an intermediate temperature range, and a construction method thereof.

In general, asphalt is a black or dark brown solid or semi-solid thermoplastic material that is very complexly composed of thousands of types of polymer hydrocarbons (C-H) containing organic compounds and trace amounts of inorganic compounds, and has the characteristic of gradually changing into a liquid state when heated.

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

In addition, the asphalt is used as a binding material or adhesive material because it has excellent adhesion and adhesion to mineral materials. It is also used as a waterproofing material because it does not dissolve in water and is impermeable. The viscosity can be changed depending on the purpose of use. Its application range is diverse and it is used for various purposes such as road paving, waterproofing, general industrial purposes, and agricultural purposes.

Asphalt used for road paving is petroleum-based asphalt, and straight asphalt, which has excellent adhesion, extensibility, and water absorption, is generally used.

However, straight asphalt has the disadvantages of low softening point, high temperature sensitivity, weak weather resistance, and weak cohesion, so it is used by adding various modifiers to make up for these problems and to suit the characteristics of the place where it is used.

In general, types of asphalt modifiers include rubber series, thermoplastic resin series, thermosetting resin series, hydrocarbon series, filler series, fiber series, rubber anti-aging agents, reducing agents, etc. Rubber series include natural rubber, Styrene Butadiene Rubber (SBR), and waste. Tires (crumb rubber), etc. are used, and thermoplastic resins include Styrene Butadiene Styrene (SBS), Ethylenevinylacetate (EVA), Polyethylene (PE), Polypropylene (PP), Polyvinyl Chloride (PVC), and Polyethylene Terephthalate (PET). The thermosetting resin series includes epoxy resin, urethane resin, acrylic resin, phenol resin, and petroleum resin, and the hydrocarbon series includes natural asphalt and gilsonite.

However, the asphalt modified materials developed so far have problems with cracks and plastic deformation of the pavement, which appear as the asphalt's resistance to low-temperature cracks and fatigue cracks decreases over time after construction due to the large temperature difference between the four seasons. Problems such as asphalt oxidation caused by exposure to sunlight and aggregate detachment due to weakened adhesion appear. In addition, it is not easy to secure uniform quality with field-injected modified materials (Plant-mix type), and pre-mix type (Pre-mix type) occurs. mixtype) Modified asphalt is difficult to preserve because it is not easy to mix the components uniformly and each component such as the modified material and asphalt depends on physical bonding, so storage is poor.

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

However, the modified concrete is expensive because it contains a large amount of latex, has a high heat reflectivity, so the prevention effect against early freezing in winter is less than that of conventional asphalt concrete, and has a low heat absorption rate, so it is difficult to change external temperature (daily temperature range, four seasons) like in Korea. ) In severe environments, there is a problem that cracks, surface peeling, and falling off (portholes) occur due to temperature stress.

Moreover, there are some bridges or special areas where general polymer-modified asphalt (PMA) pavement is difficult to withstand under traffic conditions where congestion is severe and the ratio of heavy vehicles is high.

Therefore, very strong asphalt pavement must be constructed thickly, but in the case of general asphalt pavement, it must not only be thick but also have strong elasticity, toughness, and tensile strength.

In general, steel box girder bridges as well as concrete bridges require a waterproofing process to prevent deterioration of the lower layer.

However, waterproofing layers (paints, coatings, etc.) have the problem of high cost while lacking structural performance.

Therefore, as mentioned above, if a mixture with excellent elasticity and a mixture with high toughness and tensile strength and high adhesion function are applied, an asphalt pavement that demonstrates both structural performance and durability can be created, and thus can withstand excessive traffic loads. As it is an asphalt pavement with excellent durability and features, it not only facilitates construction but also allows rapid opening to traffic.

Meanwhile, as a prior art related to the above-described technology, Korean Patent Publication No. 10-2016-0106070 discloses a polymer-modified asphalt concrete composition and a method of manufacturing polymer-modified asphalt concrete using the same.

The present invention was created to overcome the above-mentioned problems, and is durable and does not easily cause plastic deformation, aging, and/or peeling, and allows pouring and/or laying at a medium temperature, which is lower than that of general asphalt concrete compositions. A medium temperature modified asphalt concrete composition is provided.

This invention

Based on 100 parts by weight of asphalt,

1 to 30 parts by weight of styrene butadiene styrene;

1 to 30 parts by weight of petroleum resin;

800 to 1,500 parts by weight of aggregate;

0.1 to 10 parts by weight of a performance improver;

0.1 to 5 parts by weight of nanoceramic particles;

0.1 to 2 parts by weight of cellulose fiber;

0.5 to 5 parts by weight of a medium temperature additive;

0.1 to 5 parts by weight of compatibilizer; and

Provided is a medium-temperature modified asphalt concrete composition containing 0.1 to 2 parts by weight of an antioxidant.

In addition, the present invention includes a cleaning step of organizing the surface to be constructed;

On the target surface where the cleaning step is completed, based on 100 parts by weight of asphalt, 1 to 30 parts by weight of styrene butadiene styrene, 1 to 30 parts by weight of petroleum resin, 800 to 1,500 parts by weight of aggregate, 0.1 to 10 parts by weight of performance improver, nanoceramic Pour of a medium-temperature modified asphalt concrete composition containing 0.1 to 5 parts by weight of particles, 0.1 to 2 parts by weight of cellulose fibers, 0.5 to 5 parts by weight of a medium-temperature additive, 0.1 to 5 parts by weight of a compatibilizer, and 0.1 to 2 parts by weight of an antioxidant. step;

A compaction step of compaction after the pouring step is completed; and

A method of constructing a medium-temperature modified asphalt concrete composition is provided, including a curing step of curing after the compaction step is completed.

The medium-temperature modified asphalt concrete composition according to the present invention, specifically the medium-temperature modified asphalt concrete composition containing SBS, is durable, does not easily cause plastic deformation, aging, and/or peeling, and easily performs the pouring process at low cost. In addition to being able to do so, it has the effect of enabling pouring and/or laying at a medium temperature, which is lower than that of general asphalt concrete compositions.

Hereinafter, the present invention will be described in detail.

In one aspect, the present invention provides 1 to 30 parts by weight of styrenebutadienestyrene, based on 100 parts by weight of asphalt; 1 to 30 parts by weight of petroleum resin; 800 to 1,500 parts by weight of aggregate; 0.1 to 10 parts by weight of a performance improver; 0.1 to 5 parts by weight of nanoceramic particles; 0.1 to 2 parts by weight of cellulose fiber; 0.5 to 5 parts by weight of a medium temperature additive; 0.1 to 5 parts by weight of compatibilizer; and 0.1 to 2 parts by weight of an antioxidant.

From another perspective, the present invention includes a cleaning step of organizing the surface to be constructed; On the target surface where the cleaning step is completed, based on 100 parts by weight of asphalt, 1 to 30 parts by weight of styrene butadiene styrene, 1 to 30 parts by weight of petroleum resin, 800 to 1,500 parts by weight of aggregate, 0.1 to 10 parts by weight of performance improver, nanoceramic Pour of a medium-temperature modified asphalt concrete composition containing 0.1 to 5 parts by weight of particles, 0.1 to 2 parts by weight of cellulose fibers, 0.5 to 5 parts by weight of a medium-temperature additive, 0.1 to 5 parts by weight of a compatibilizer, and 0.1 to 2 parts by weight of an antioxidant. step; A compaction step of compaction after the pouring step is completed; And it provides a construction method of a medium-temperature modified asphalt concrete composition including a curing step of curing after the compaction step is completed.

The asphalt according to the present invention is not particularly limited as long as it is an asphalt commonly used in the art, but it is recommended that petroleum-based asphalt such as straight asphalt can be used.

Here, the straight asphalt is a normal asphalt obtained by refining the residue obtained by drying or distilling the raw material as petroleum asphalt. In particular, those with a penetration degree of 60 to 80 are better because they are easier to construct on roads.

The content of the remaining ingredients other than asphalt constituting the medium-temperature modified asphalt concrete composition according to the present invention, specifically the medium-temperature modified asphalt concrete composition containing SBS, is based on 100 parts by weight of asphalt.

Styrene butadiene styrene (SBS) according to the present invention inhibits peeling of concrete produced from a medium-temperature modified asphalt concrete composition, specifically a medium-temperature modified asphalt concrete composition containing SBS, and reduces cracks to prevent potholes. In addition, it provides cohesive force and improves strength at the same time.

The preferred styrene butadiene styrene is styrene butadiene styrene with an elongation of 320 to 1,400%, and its usage is recommended to be 1 to 30 parts by weight based on 100 parts by weight of asphalt.

The petroleum resin according to the present invention is intended to provide high adhesion to a medium-temperature modified asphalt concrete composition, and for this purpose, a petroleum resin commonly used in the industry, preferably an aromatic petroleum resin, an aliphatic petroleum resin, or any of these. A mixture can be used, and a petroleum resin having a melt temperature of 100°C or higher, a penetration of 1/10 mm or less, and a viscosity of 50 to 500 cps at 140°C (hereinafter referred to as 140°C viscosity) is particularly preferred, but it is recommended. A petroleum resin with a melting temperature of 110°C to 140°C, a penetration degree of 0.5 to 3, and a viscosity of 50 to 300cps at 140°C is preferred, but it is more recommended to use an aliphatic C-5 petroleum resin with a viscosity of 100 to 150cps. good night.

The preferred amount of petroleum resin used is not particularly limited, but it is recommended to be 1 to 30 parts by weight based on 100 parts by weight of asphalt.

The aggregate according to the present invention is a medium-temperature modified asphalt concrete composition, specifically, a component of the medium-temperature modified asphalt concrete composition containing SBS, such as asphalt, styrene-butadiene-styrene, petroleum resin, etc., which can be agglomerated to form a lump. It is a mineral material for construction and is chemically stable.

The aggregate refers to granite, limestone, sand, gravel, basalt, rubble, bazalt, vermiculite, or a mixture of at least one or more selected from these, or other similar materials.

Specifically, the aggregate may further include basic vein rock with a particle size of about 13 mm and a water absorption of about 0.7% and/or bauxite with a particle size of about 5 mm and a water absorption of about 0.7%.

Depending on the size of the aggregate, those smaller than 5 mm are called fine aggregates, and those larger than 5 mm are called coarse aggregates. The preferred amount of aggregate used is 800 to 1,500 parts by weight based on 100 parts by weight of asphalt.

The performance improving agent according to the present invention may be any performance improving agent commonly used in the art, specifically an asphalt performance improving agent, and the amount used is preferably 0.1 to 10 parts by weight based on 100 parts by weight of asphalt.

Preferred performance improvers include 90 to 99.5% by weight of vinyl acetate monomer-paraffin oil and 0.5 to 10% by weight of benzoyl peroxide based on the total weight of the performance improver.

Here, the vinyl acetate monomer-paraffin oil is preferably a mixture of 5 to 25% by weight of vinyl acetate monomer and 75 to 95% by weight of paraffin oil.

The nanoceramic particles according to the present invention rise to the surface during curing of the medium-temperature modified asphalt concrete composition to form a dense and high hardness surface, thereby improving moisture resistance, durability, weather resistance, impact resistance, and chemical resistance.

The amount of nanoceramic particles used is preferably 0.1 to 5 parts by weight based on 100 parts by weight of asphalt.

Preferred nanoceramic particles include silicon carbide, alumina, silica, zirconia-silica, ZnO, TiO ₂ and/or CaCO ₃ .

These ceramic particles preferably have an average particle size in the nano range. Specifically, the average particle size of the silicon carbide is 300 to 500 nm, the average particle size of the alumina is 500 to 1000 nm, the average particle size of the silica is 700 to 1500 nm, and the zirconia- It is preferable that the average particle diameter of silica is 500 to 1000 nm, the average particle diameter of ZnO is 500 to 1000 nm, the average particle diameter of TiO2 is 100 to 300 nm, and the average particle diameter of CaCO ₃ is 500 to 1000 nm.

Among these, silicon carbide does not exist as a natural mineral, so it is artificially synthesized, has excellent chemical stability and corrosion resistance at high temperatures, and has high hardness.

The cellulose fiber according to the present invention is intended to provide tensile strength and/or lightness due to stress applied in the longitudinal-lateral direction of a bridge surface formed of a medium-temperature modified asphalt concrete composition. Any cellulose fiber having this purpose can be used. However, it is preferable to use natural cellulose fibers, and the amount used is 0.1 to 2 parts by weight based on 100 parts by weight of asphalt.

The moderate temperature additive according to the present invention is used to minimize the emission of carbon dioxide and harmful substances by lowering the temperature required during the manufacture and/or construction of the medium temperature modified asphalt concrete composition compared to the conventional method, preferably by about 20 to 40 ° C. For this purpose, any common neutralizing additive in the industry may be used, and the amount used is preferably 0.5 to 5 parts by weight based on 100 parts by weight of asphalt.

A preferred neutralizing additive is polyethylene wax.

In a specific embodiment, the neutralizing additive may be used by mixing a mixture of polyethylene wax and modified fatty acid. In this case, it is recommended to use a mixture of polyethylene wax and modified fatty acid at 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 80 to 400 cPs at about 140°C.

At this time, if the melting point of the polyethylene wax is less than 95°C, the rigidity of the asphalt may weaken when mixed with asphalt, and if the melting point is more than 125°C, it may not be sufficiently dispersed in the low-noise, drainable, medium-temperature asphalt concrete composition, leading to a decrease in physical properties. There are concerns.

In addition, if the melt viscosity of polyethylene wax is less than 80 cPs at 140°C, the high-temperature properties are weakened and it is unsuitable as asphalt for road paving, and if the melt viscosity is more than 400 cPs at 140°C, the viscosity of the asphalt becomes too high, making it a medium-temperature modified asphalt concrete composition. Problems may arise where the process is not carried out properly during manufacturing and pouring.

Meanwhile, the modified fatty acid used in the moderate temperature additive supplements the moderate temperature function of polyethylene wax and serves to improve the moisture sensitivity of the medium temperature modified asphalt concrete composition.

Specifically, the modified fatty acid according to the present invention is obtained by melt-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, and is used to reduce the moisture content of the medium-temperature modified asphalt concrete composition. This is desirable in terms of sensitivity improvement effect.

Additionally, the modified fatty acid preferably has a melting point in the range of 110 to 140°C. If the melting point of the modified fatty acid is outside the above range and is higher than the manufacturing temperature of the medium temperature modified asphalt concrete composition, the effect of supplementing the moderate temperature function and improving moisture sensitivity cannot be obtained.

The compatibilizer according to the present invention is intended to increase compatibility between asphalt and performance improvers contained in a medium-temperature modified asphalt concrete composition, specifically, a medium-temperature modified asphalt concrete composition containing SBS.

Preferred compatibilizers include polyphosphoric acid, metal salt inorganic acids, or mixtures thereof, and it is recommended to use 0.1 to 5 parts by weight based on 100 parts by weight of asphalt.

The antioxidant according to the present invention is used to prevent oxidation of the medium-temperature modified asphalt concrete composition.

Preferred antioxidants include amine-based, bisphenol-based, monophenol-based and sulfur-based antioxidants, and the amount used is preferably 0.1 to 2 parts by weight based on 100 parts by weight of asphalt.

Specifically, the antioxidant according to the present invention, when processed at high temperature, is a low-molecular-type high-molecular-type phenol-based antioxidant, for example, 2.2-methylenebis (4-methyl-6-t-butylphenol) [2. 2 - M e t h y l e n e b i s ( 4 - m e t h y l - 6 - t - b u t y l p h e n o l )], using 2.6-di-t-Butyl-4-methylphenol (2.6-di -t-Butyl-4-methylphenol) or a mixture thereof. I recommend you.

The medium-temperature modified asphalt concrete composition according to the present invention, specifically the medium-temperature modified asphalt concrete composition containing SBS, may further include one or more types of additives implemented in the following specific embodiments.

In a specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention, specifically the medium-temperature modified asphalt concrete composition containing SBS, contains manganese sulfate as asphalt to secure the initial strength of the composition and improve wear resistance, corrosion resistance, chemical resistance, etc. It may further include 1 to 5 parts by weight based on 100 parts by weight.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of calcite powder based on 100 parts by weight of asphalt in order to improve the heat resistance, wear resistance, chemical resistance, and/or hardness of the composition. Calcite has the property of being insoluble in pure water and can also serve as a buffer in an acidic environment, and its preferred average particle size is 1 to 5㎛.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention is a polyvinylidene fluoride resin to improve cracking and dropping phenomenon even when the composition rapidly hardens, and to provide processability, adhesion, and stability of the composition. It may be further included in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of asphalt.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 0.1 to 3 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. there is.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention further includes 0.1 to 5 parts by weight of polyoxyethylene nonylphenyl ether based on 100 parts by weight of asphalt in order to improve dispersibility and improve material stability and workability. can do.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 0.1 to 2 parts by weight of nickel slag powder based on 100 parts by weight of asphalt in order to improve the heat resistance and acid resistance of the composition. The nickel slag powder is made by pulverizing nickel slag, an industrial by-product generated during the nickel smelting process. The nickel slag powder contains 30 to 35% by weight of MgO, and this component has stability against heat and acid, thereby achieving the above effects. The average particle size of the preferred nickel slag powder is 1 to 3㎛.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention contains 0.1 to 3 parts by weight of diisononyl phthalate (Di- Isononyl Phthalate, (DINP)) may be further included.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 0.1 to 3 parts by weight of tocopheryl acetate based on 100 parts by weight of asphalt in order to improve the antibacterial and anti-oxidation effects of the composition. there is.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention contains 0.1 to 2 parts by weight of dimer acid based on 100 parts by weight of asphalt to prevent peeling, improve adhesion strength, and crack resistance of the composition. The origin and form of the dimer acid are not greatly limited, but it is preferably a dimer of vegetable oil fatty acid, and the vegetable fatty acid is one selected from the group consisting of oleic acid, linoleic acid, stearic acid, and palmitic acid. It may consist of the above.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention further includes 0.1 to 1 part by weight of sodium benzoate based on 100 parts by weight of asphalt in order to improve the initial rust prevention of the composition and improve the viscoelasticity. can do.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention further includes 1 to 10 parts by weight of acetylated dranolan based on 100 parts by weight of asphalt in order to improve the water resistance, heat resistance, salt resistance, and adhesiveness of the composition. can do.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention improves uniform mixing and workability by improving the lubricity and dispersibility of the composition, and aluminum stearate is added to 100 parts by weight of asphalt to improve crack resistance and strength. It may further include 1 to 5 parts by weight.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of sericite based on 100 parts by weight of asphalt in order to improve the wear resistance, fire resistance, water resistance, and deodorization of the composition. , The sericite is a mineral belonging to the monoclinic system and has excellent stability, lubricity, moisture retention, etc., so when it is included in a medium-temperature modified asphalt concrete composition, it has the above-mentioned effects.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of sepiolite based on 100 parts by weight of asphalt in order to improve the viscosity and material separation resistance of the composition.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention contains 1 to 5 parts by weight of polytrimethylene terephthalate based on 100 parts by weight of asphalt in order to improve the flexibility, elasticity, elasticity, and ultraviolet ray resistance of the composition. It can be included.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention contains 1 to 3 parts by weight of 3-mercaptopropyltrimethoxysilane based on 100 parts by weight of asphalt in order to improve the strength, penetration, and water repellency of the composition. More may be included.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 3 parts by weight of dibutylhydroxytoluene based on 100 parts by weight of asphalt to prevent rancidity and aging and improve stability of the composition. .

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention prevents oxidation of the composition, provides rapid curing characteristics, effectively prevents material separation and material loss, and has wet hardening performance, crack inhibition performance, and shrinkage. In order to improve resistance performance, 0.1 to 2 parts by weight of shungite fine powder may be further included based on 100 parts by weight of asphalt. Shungite is a mineral whose main components are silicate and fullerene and is known to have excellent antioxidant ability. It can be modified. When included in an asphalt concrete composition, the above-mentioned effects can be obtained, and the average particle size of the preferred fine powder of shungite is 1 to 5㎛.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 3 parts by weight of anorsite fine powder based on 100 parts by weight of asphalt in order to inhibit corrosion, neutralize resistance, and improve fluidity of the composition. The anorsite (ilesite) is a triclinic mineral rich in lime, which reacts with compounds caused by chlorine ions penetrating from the outside and fixes the chlorine ions, preventing the chlorine ions from reaching the inside of the composition. The same effect can be achieved, and the average particle size of the preferred anorsite fine powder is 1 to 5㎛.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 0.1 to 2 parts by weight of starch phosphate ester based on 100 parts by weight of asphalt in order to improve the water absorption, permeability, and moisture retention of the composition.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention further contains 1 to 5 parts by weight of barium titanate based on 100 parts by weight of asphalt in order to control the viscosity of the composition and improve freeze-thaw resistance and wear resistance. It may include, wherein the barium titanate hydroxide is obtained by dissolving 0.01 to 0.15 mol/L of barium titanium complex alkoxide in one or more alcohols selected from the group consisting of pentanol, hexanol, heptanol, octanol, and mixtures thereof. 40 to 70% by volume of the resulting solution; Preparing a mixed solution by mixing 25 to 45% by volume of methyl ethyl ketone at a temperature of 20 to 60 ° C.; Preparing a reaction solution by mixing ethanol and 0.03 to 0.30 mol/l of water in the mixed solution so that the sum of the ethanol and water is 5 to 15% by volume; and growing the barium titanate hydroxide particulate nuclei nucleated at the beginning of the formation of the reaction solution while stirring the reaction solution at room temperature for 0.2 to 1.5 hours, and having an average particle diameter of 100 to 800 nm. good night.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 3 parts by weight of Fibroferrite fine powder based on 100 parts by weight of asphalt in order to reduce the weight of the composition and improve flame retardancy. Fibroperite is a trigonal mineral rich in iron, and the average particle size of preferred fibroperite fine powder is 1 to 5㎛.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further use 0.1 to 3 parts by weight of gallium nitride (GaN) fine powder based on 100 parts by weight of asphalt in order to reduce cracking and improve wear resistance, salt resistance, etc. of the composition. The preferred average particle size of gallium nitride is 1 to 5㎛.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention is a type of natural clay rich in aluminum and magnesium and with strong adsorption in order to improve the adhesion strength, salt resistance, neutralization resistance, heat resistance, and self-repairability of the composition. Smectite may be further included in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of asphalt.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 3 parts by weight of succinic acid based on 100 parts by weight of asphalt to improve initial strength development. The succinic acid is a dicarboxylic acid, and when used, The temperature rises quickly, and the temperature rises slowly and then rapidly, making it advantageous for developing initial strength.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 3 parts by weight of polychlorotrifluoroethylene based on 100 parts by weight of asphalt in order to improve the strength, impact resistance, and chemical resistance of the composition. You can.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention contains 1 to 3 parts by weight of egg shell membrane fine powder based on 100 parts by weight of asphalt in order to prevent material separation and material loss of the composition and improve workability and dispersibility. It may further include fine powder, and the above effect can be further improved by using the egg shell membrane fine powder irradiated with ultraviolet rays. More specifically, the egg shell membrane fine powder is obtained from the egg shell membrane after drying the egg shell. Obtaining a; Acid treatment of the obtained eggshell membrane by immersing it in an aqueous solution of organic acid with a concentration of 1 to 15% by weight of 1.5 to 5 times the weight for 2 to 8 hours; Mixing 0.1 to 10 parts by weight of sodium benzoate with 100 parts by weight of the acid-treated eggshell membrane immersion liquid, and then making a mixed dough with a moisture content of 20 to 35%; Putting the mixed dough in an ultraviolet irradiation device and irradiating ultraviolet rays; and drying the mixed dough exposed to ultraviolet rays inside the ultraviolet irradiation device to a moisture content of 15% or less, and then grinding the mixed dough to an average particle size of 200 to 600 μm. At this time, drying of the eggshell may be performed at 70 to 100° C. for 1 to 4 hours, and the average particle size of the preferred egg shell membrane fine powder is 1 to 5 ㎛.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of gluconolactone based on 100 parts by weight of asphalt to prevent aging, prevent peeling, and improve crack resistance of the composition. You can.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention contains distearyl pentaerythine to prevent the composition from being decomposed by an oxidation reaction and losing its intrinsic properties by suppressing or blocking the chemical reaction due to contact with oxygen. Distearyl pentaerythritol diphosphite may be further included in an amount of 1 to 5 parts by weight based on 100 parts by weight of asphalt.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 10 parts by weight of guar gum based on 100 parts by weight of asphalt.

Here, the guar gum is a natural resin that is a water-soluble polymer material, and voids are generated due to the interaction between expansion due to hydration reaction, contraction due to dehydration, and expansion action when the composition solidifies due to hydration reaction, and these voids and natural Guar gum, a resin, can exhibit shock absorption due to its inherent elasticity.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 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 period of time. there is.

In another specific embodiment, in order to improve the plasticity and molding processability of the medium-temperature modified asphalt concrete composition according to the present invention, ethylene bis stearamide may be further included in an amount of 1 to 10 parts by weight based on 100 parts by weight of asphalt. there is.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention is oxidized and discolored when the composition is exposed to air, light, and moisture, thereby damaging the appearance as well as preventing rapid deterioration of the physical properties of the composition. To this end, it may further include 1 to 5 parts by weight of red copper ions based on 100 parts by weight of asphalt. Since the red copper ions are secondary minerals produced by weathering of copper sulfide minerals and are prone to eluted copper ions, the eluted copper ions are absorbed by microorganisms. When in contact with an enzyme or a virus, it binds to enzymes or proteins and reduces their activity, thereby lowering the metabolic function of microorganisms and viruses, and activating oxygen in the air through the catalytic action of eluted copper ions, which decomposes the organic matter of microorganisms and viruses. There is.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of zirconium phosphate based on 100 parts by weight of asphalt in order to improve the wear resistance, chemical resistance, alkali resistance, contamination resistance, etc. of the composition. You can.

In another specific embodiment, in order to impart an antibacterial effect to the medium-temperature modified asphalt concrete composition according to the present invention and to remove heavy metals contained in the modified asphalt concrete composition, carboxymethyl chitosan is added in an amount of 0.1 to 0.1 parts by weight based on 100 parts by weight of asphalt. It may further include 3 parts by weight. The carboxymethyl chitosan is a chitosan derivative and is usually extracted from the shells of crustaceans such as crabs and shrimp.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of fine magnesite powder based on 100 parts by weight of asphalt in order to improve the acid resistance and fire resistance of the composition, and the magnesite is magnesium carbonate. It is a trigonal magnesium mineral composed of, and the average particle size of the preferred magnesite fine powder is 1 to 5㎛.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention contains 1 to 10 parts by weight of 2-bromopyridine (2) based on 100 parts by weight of asphalt in order to speed up the reaction rate when mixing the composition and improve adhesion performance. -bromopyridine) may be further included.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention not only increases the weather resistance and adsorption capacity of the composition, absorbs carbon dioxide floating in the air, purifies the air and stably absorbs ultraviolet rays, but also acts as a binder. In order to do this, 1 to 10 parts by weight of a mixture of sodium silicate and silica sand mixed at a weight ratio of 1:1 may be further included based on 100 parts by weight of asphalt.

Here, using a mixture of sodium silicate and silica sand in a weight ratio of 1:1 allows the silica sand to play the role of a binder, and sodium silicate acts as a ceramic binder to increase weather resistance and adsorption power, and to increase air absorption. This is to provide air purification by absorbing carbon dioxide floating in the air and to act as an effective ultraviolet ray rubber anti-aging agent that absorbs the entire ultraviolet ray wavelength range and the entire visible ray wavelength range.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of tricalcium aluminate based on 100 parts by weight of asphalt in order to improve the initial strength of the composition and suppress the occurrence of cracks. .

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention improves the adhesion, cohesion, and material separation prevention of the composition, and improves physical performance such as shrinkage resistance, adhesion strength, bending strength, tensile strength, and compressive strength. In order to achieve this, aminomethyl polystyrene resin may be further included in an amount of 1 to 5 parts by weight based on 100 parts by weight of asphalt.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 3 parts by weight of titanium oxide based on 100 parts by weight of asphalt in order to improve the preservative, antifouling, and antibacterial properties of the composition.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of molybdenum disulfide based on 100 parts by weight of asphalt in order to improve the strength, wear resistance, crack reduction effect, etc. of the composition.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention may further include 1 to 5 parts by weight of periwinkle based on 100 parts by weight of asphalt in order to improve the adsorption capacity, deodorization, heat resistance, etc. of the composition. Lin is mainly composed of calcium carbonate obtained by calcining oyster shells. It is manufactured by calcining and pulverizing raw oyster shells at a temperature of 700 to 900°C for 1 to 2 hours, followed by hydration and carbonation reaction, to further achieve the above-mentioned effects. It can be improved.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention develops strength by improving the reactivity of the composition, and contains sodium metaphosphate based on 100 parts by weight of asphalt to improve contamination resistance and material separation resistance. It may be further included in an amount of 0.1 to 3 parts by weight.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention contains 1 to 5 parts by weight of aluminum silicate based on 100 parts by weight of asphalt in order to improve the thermal and chemical stability of the composition, improve fire resistance, and improve filling properties. More may be included.

In another specific embodiment, the medium-temperature modified asphalt concrete composition according to the present invention further includes 0.1 to 2 parts by weight of cuprous oxide (Cu ₂ O) based on 100 parts by weight of asphalt in order to improve the strength of the composition and prevent surface contamination. can do.

The construction method using the medium-temperature modified asphalt concrete composition according to the present invention having the above-mentioned structure, specifically the medium-temperature modified asphalt concrete composition containing SBS, will be described as follows.

The construction method using the medium-temperature modified asphalt concrete composition according to the present invention includes the steps of organizing the surface to be constructed;

On the target surface where the cleaning step is completed, based on 100 parts by weight of asphalt, 1 to 30 parts by weight of styrene butadiene styrene, 1 to 30 parts by weight of petroleum resin, 800 to 1,500 parts by weight of aggregate, 0.1 to 10 parts by weight of performance improver, nanoceramic Pour of a medium-temperature modified asphalt concrete composition containing 0.1 to 5 parts by weight of particles, 0.1 to 2 parts by weight of cellulose fibers, 0.5 to 5 parts by weight of a medium-temperature additive, 0.1 to 5 parts by weight of a compatibilizer, and 0.1 to 2 parts by weight of an antioxidant. step;

A compaction step of compaction after the pouring step is completed; and

It includes a curing step of curing after the compaction step is completed.

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 straight asphalt with a penetration degree of 70, 15 g of styrene-butadiene-styrene with an elongation of about 850%, 15 g of aliphatic C-5 petroleum resin with a viscosity of about 120 cps, sand with an average particle size of about 1 mm to 3 mm and gravel with an average particle size of about 5 to 7 mm. :1,100g of aggregate mixed at a weight ratio of 1, 5g of performance improver containing 95% by weight of vinyl acetate monomer-paraffin oil and 5% by weight of benzoyl peroxide, 3g of silicon carbide with an average particle diameter of about 400nm, 1g of natural cellulose fiber, medium temperature A medium-temperature modified asphalt concrete composition was prepared by mixing 3 g of polyethylene wax, 3 g of polyphosphoric acid, and 1 g of 2.2-methylenebis(4-methyl-6-t-butylphenol) as a chemical additive.

[Example 2]

This was carried out in the same manner as in Example 1, except that instead of 3 g of polyethylene wax, 3 g of a neutralizing agent mixed with polyethylene wax and modified fatty acid in a weight ratio of 2:1 was used as a neutralizing additive.

[Example 3]

The same method as Example 1 was performed, except that 3 g of manganese sulfate was additionally added.

[Example 4]

The same method as Example 1 was performed, except that 2 g of calcite powder with an average particle size of 3 ㎛ was additionally added.

[Example 5]

The same method as Example 1 was performed, except that 1 g of polyvinylidene fluoride resin was additionally added.

[Example 6]

The same method as Example 1 was performed, except that 1 g of trimethylolpropane triacrylate was additionally added.

[Example 7]

The same method as Example 1 was performed, except that 2 g of polyoxyethylenenonylphenyl ether was additionally added.

[Example 8]

The same method as Example 1 was performed, except that 1 g of nickel slag powder with an average particle size of 2 μm was added.

[Example 9]

The same method as Example 1 was performed, except that 2 g of diisononyl phthalate was additionally added.

[Example 10]

The same method as Example 1 was performed, except that 1 g of tocopheryl acetate was additionally added.

[Example 11]

This was carried out in the same manner as in Example 1, but with the additional addition of 1 g of dimer acid.

[Example 12]

This was carried out in the same manner as Example 1, but with the addition of 0.5 g of sodium benzoate.

[Example 13]

The same method as Example 1 was performed, except that 3 g of acetylated dranolan was added.

[Example 14]

This was carried out in the same manner as in Example 1, but with the addition of 2 g of aluminum stearate.

[Example 15]

This was carried out in the same manner as Example 1, but with the addition of 2g of sericite.

[Example 16]

This was carried out in the same manner as in Example 1, but with the addition of 3 g of sepiolite.

[Example 17]

The same method as Example 1 was performed, except that 2 g of polytrimethylene terephthalate was additionally added.

[Example 18]

The same method as Example 1 was performed, except that 2 g of 3-mercaptopropyltrimethoxysilane was additionally added.

[Example 19]

The same method as Example 1 was performed, except that 2 g of dibutylhydroxytoluene was additionally added.

[Example 20]

This was carried out in the same manner as in Example 1, but with the addition of 1 g of Sunjit fine powder with an average particle size of 3㎛.

[Example 21]

The same method as Example 1 was performed, except that 2 g of anorsite fine powder with an average particle size of 3 ㎛ was additionally added.

[Example 22]

This was carried out in the same manner as Example 1, but with the addition of 1 g of starch phosphate ester.

[Example 23]

The same method as Example 1 was performed, except that 3 g of barium titanate with an average particle diameter of 500 nm was additionally added.

[Example 24]

This was carried out in the same manner as in Example 1, except that 2 g of pproperite fine powder with an average particle size of 3㎛ was added.

[Example 25]

The same method as Example 1 was performed, except that 2 g of gallium nitride fine powder with an average particle size of 3 μm was added.

[Example 26]

This was carried out in the same manner as Example 1, but with the additional addition of 2 g of smectite.

[Example 27]

The same method as Example 1 was performed, except that 2 g of succinic acid was additionally added.

[Example 28]

The same method as Example 1 was performed, except that 2 g of polychlorotrifluoroethylene was additionally added.

[Example 29]

The same method as Example 1 was performed, except that 2 g of egg shell membrane fine powder with an average particle size of 3 μm was added.

[Example 30]

This was carried out in the same manner as in Example 1, but with the addition of 2 g of gluconolactone.

[Example 31]

The same method as Example 1 was performed, except that 3 g of distearyl pentaerythritol diphosphate was added.

[Example 32]

The same method as Example 1 was performed, except that 3 g of guar gum was added.

[Example 33]

This was carried out in the same manner as Example 1, but with the addition of 3 g of itaconic acid.

[Example 34]

The same method as Example 1 was performed, except that 3 g of ethylene bisstamide was added.

[Example 35]

This was carried out in the same manner as Example 1, but with the addition of 2 g of red copper stone.

[Example 36]

The same method as Example 1 was performed, except that 2 g of zirconium phosphate was added.

[Example 37]

The same method as Example 1 was performed, except that 2 g of carboxymethyl chitosan was added.

[Example 38]

The same method as Example 1 was performed, except that 3 g of fine magnesite powder with an average particle size of 3 μm was added.

[Example 39]

This was carried out in the same manner as Example 1, but with the addition of 5 g of 2-bromopyridine.

[Example 40]

This was carried out in the same manner as in Example 1, except that 5 g of a mixture of sodium silicate and silica sand mixed at a weight ratio of 1:1 was added.

[Example 41]

The same method as Example 1 was performed, except that 2 g of tricalcium aluminate was added.

[Example 42]

This was carried out in the same manner as Example 1, but with the addition of 2 g of aminomethylpolystyrene resin.

[Example 43]

The same method as Example 1 was performed, except that 2 g of titanium oxide was added.

[Example 44]

This was carried out in the same manner as in Example 1, but with the addition of 3 g of molybdenum disulfide.

[Example 45]

This was carried out in the same manner as Example 1, but with the additional addition of 3 g of Gyeongyorin.

[Example 46]

This was carried out in the same manner as in Example 1, but with the addition of 2 g of sodium metaphosphate.

[Example 47]

This was carried out in the same manner as in Example 1, but with the addition of 2 g of aluminum silicate.

[Example 48]

The same method as Example 1 was performed, except that 1 g of cuprous oxide was additionally added.

[Example 49]

This was carried out in the same manner as Example 1, except that all the additives added according to Examples 3 to 48 were added.

[Experiment]

After manufacturing an asphalt layer with a thickness of about 60 mm using the composition prepared according to the examples, low temperature (at -10°C) hardenability, crackability, indirect tensile strength, strain strength, rotational viscosity, etc. were measured. , an asphalt layer with a thickness of approximately 50 mm was manufactured and the dynamic stability was measured and shown in Table 1.

Here, dynamic stability was measured through deformation strength tests and tests using the Kim Test to evaluate plastic deformation resistance, indirect strength was conducted to evaluate crack resistance, and compressive strength was measured using an asphalt compressive strength tester.

Gelation/1hr
(at -10℃) degree of crack Dynamic stability
(pass/mm) Indirect tensile strength
(ITS) strain strength
(Mpa) Rotational viscosity 115℃ 125℃ 135℃ Example 1 67 doesn't exist 1885 0.87 5.61 4721 2534 1364 Example 2 67 doesn't exist 1882 0.86 5.60 4801 2623 1358 Example 3 68 doesn't exist 1894 0.90 5.79 6221 368 2012 Example 4 66 doesn't exist 1874 0.85 5.83 4693 2462 1674 Example 5 66 doesn't exist 1956 0.84 5.73 4984 2854 1829 Example 6 67 doesn't exist 1952 0.87 5.80 5547 2951 1660 Example 7 67 doesn't exist 1932 0.93 5.86 5729 4178 1742 Example 8 66 doesn't exist 1874 0.90 5.91 5857 3445 1668 Example 9 64 doesn't exist 1869 0.92 5.83 4831 3248 1493 Example 10 67 doesn't exist 1922 0.94 5.85 5794 3665 1784 Example 11 66 doesn't exist 1931 0.89 5.64 6636 3147 2063 Example 12 67 doesn't exist 1957 0.85 5.66 6584 3135 1921 Example 13 67 doesn't exist 1934 0.86 5.58 5927 2934 1658 Example 14 66 doesn't exist 1839 0.84 5.69 6293 3662 1941 Example 15 67 doesn't exist 1985 0.87 5.71 4113 2114 1459 Example 16 66 doesn't exist 1945 0.85 5.64 5239 2351 1633 Example 17 68 doesn't exist 1934 0.94 5.75 5759 2932 1460 Example 18 67 doesn't exist 1896 0.96 5.84 5430 4492 1732 Example 19 68 doesn't exist 1873 0.84 5.98 5867 3436 1849 Example 20 67 doesn't exist 1954 0.83 5.95 5839 3233 1895 Example 21 66 doesn't exist 1893 0.82 5.85 5429 4792 1833 Example 22 67 doesn't exist 1968 0.86 5.84 5867 3536 1848 Example 23 66 doesn't exist 1921 0.88 5.76 4839 3733 1893 Example 24 66 doesn't exist 1962 0.83 5.61 5367 2974 1658 Example 25 67 doesn't exist 1969 0.84 5.63 6193 3643 1932 Example 26 69 doesn't exist 1884 0.86 5.51 4343 2147 1459 Example 27 67 doesn't exist 1890 0.89 5.54 4293 2456 1533 Example 28 66 doesn't exist 1832 0.84 5.57 4136 2691 1693 Example 29 67 doesn't exist 1934 0.89 5.64 5604 3663 2031 Example 30 66 doesn't exist 1884 0.84 5.58 6010 2451 1859 Example 31 67 doesn't exist 1944 0.86 5.81 5433 2876 1730 Example 32 68 doesn't exist 1923 0.88 6.10 6221 3677 2002 Example 33 67 doesn't exist 1882 0.85 6.14 4693 2461 1667 Example 34 66 doesn't exist 1943 0.86 5.97 4984 2859 1823 Example 35 65 doesn't exist 1979 0.87 6.05 6031 3674 2016 Example 36 68 doesn't exist 1951 0.86 5.73 5839 2363 1832 Example 37 66 doesn't exist 1962 0.87 5.88 5550 2892 1668 Example 38 67 doesn't exist 1948 0.82 5.85 5892 3675 1683 Example 39 68 doesn't exist 1934 0.86 5.81 6434 3141 1843 Example 40 66 doesn't exist 1951 0.90 5.75 6430 4129 1759 Example 41 65 doesn't exist 1942 0.89 578 6633 3141 2060 Example 42 67 doesn't exist 1934 0.86 5.91 6583 3136 1921 Example 43 67 doesn't exist 1923 0.87 5.54 5927 2932 1654 Example 44 68 doesn't exist 1873 0.86 5.77 6293 3661 1930 Example 45 66 doesn't exist 1985 0.86 5.78 4113 2115 1456 Example 46 65 doesn't exist 1992 0.88 5.42 5239 2351 1634 Example 47 68 doesn't exist 1985 0.92 5.76 4620 2690 1377 Example 48 67 doesn't exist 1879 0.86 5.85 4449 2587 1286 Example 49 66 doesn't exist 1852 0.85 5.95 6021 3619 1874

As shown in Table 1, the low-temperature hardenability, crackability, dynamic stability, indirect tensile strength, and deformation strength of the examples using the medium-temperature modified asphalt concrete composition are good, and the rotational viscosity is at least 1200 or more at 110 to 130 ° C. It was confirmed that all medium temperature modified asphalt concrete compositions in the example can be used in the medium temperature range.

As described above, a person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, all embodiments described above should be understood as illustrative and not restrictive. The scope of the present invention should be construed as including all changes or modified forms derived from the meaning and scope of the claims described below and their equivalent concepts rather than the detailed description above.

Claims (5)

Based on 100 parts by weight of asphalt,
1 to 30 parts by weight of styrene butadiene styrene;
1 to 30 parts by weight of petroleum resin;
800 to 1,500 parts by weight of aggregate;
0.1 to 10 parts by weight of a performance improver;
0.1 to 5 parts by weight of nanoceramic particles;
0.1 to 2 parts by weight of cellulose fiber;
0.5 to 5 parts by weight of a medium temperature additive;
0.1 to 5 parts by weight of compatibilizer; and
In a medium-temperature modified asphalt concrete composition containing 0.1 to 2 parts by weight of an antioxidant,
Manganese sulfate is further included in an amount of 1 to 5 parts by weight based on 100 parts by weight of asphalt,
It further contains 0.1 to 3 parts by weight of polyvinylidene fluoride resin based on 100 parts by weight of asphalt,
It further contains 0.1 to 3 parts by weight of diisononyl phthalate based on 100 parts by weight of asphalt,
Tocopheryl acetate is further included in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of asphalt,
Fibroperite fine powder is further included in an amount of 1 to 3 parts by weight based on 100 parts by weight of asphalt,
It further contains 0.1 to 3 parts by weight of gallium nitride fine powder based on 100 parts by weight of asphalt,
Smectite is further included in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of asphalt,
It further contains 1 to 5 parts by weight of gluconolactone based on 100 parts by weight of asphalt,
Itaconic acid is further included in an amount of 1 to 5 parts by weight based on 100 parts by weight of asphalt,
Red copper stone is further included in an amount of 1 to 5 parts by weight based on 100 parts by weight of asphalt,
Carboxymethyl chitosan is further included in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of asphalt,
A medium-temperature modified asphalt concrete composition further comprising 0.1 to 2 parts by weight of cuprous oxide based on 100 parts by weight of asphalt.
delete delete delete A cleaning step of organizing the surface to be constructed;
On the target surface where the cleaning step is completed, based on 100 parts by weight of asphalt, 1 to 30 parts by weight of styrene butadiene styrene, 1 to 30 parts by weight of petroleum resin, 800 to 1,500 parts by weight of aggregate, 0.1 to 10 parts by weight of performance improver, nanoceramic Manganese sulfate in a medium-temperature modified asphalt concrete composition containing 0.1 to 5 parts by weight of particles, 0.1 to 2 parts by weight of cellulose fibers, 0.5 to 5 parts by weight of a medium-temperature additive, 0.1 to 5 parts by weight of a compatibilizer, and 0.1 to 2 parts by weight of an antioxidant. It further contains 1 to 5 parts by weight based on 100 parts by weight of asphalt, polyvinylidene fluoride resin is further included in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of asphalt, and diisononyl phthalate is further included at 0.1 parts by weight based on 100 parts by weight of asphalt. to 3 parts by weight, further comprising tocopheryl acetate in an amount of 0.1 to 3 parts by weight based on 100 parts by weight of asphalt, and further comprising fibroperite fine powder in an amount of 1 to 3 parts by weight based on 100 parts by weight of asphalt, and gallium nitride fine powder. It further contains 0.1 to 3 parts by weight based on 100 parts by weight of asphalt, smectite is further included in 0.1 to 3 parts by weight based on 100 parts by weight of asphalt, and gluconolactone is further included in 1 to 5 parts by weight based on 100 parts by weight of asphalt. Itaconic acid is further included in an amount of 1 to 5 parts by weight based on 100 parts by weight of asphalt, red copper stone is further included in an amount of 1 to 5 parts by weight based on 100 parts by weight of asphalt, and carboxymethyl chitosan is added in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of asphalt. A pouring step of pouring a medium-temperature modified asphalt concrete composition further comprising 3 parts by weight and 0.1 to 2 parts by weight of cuprous oxide based on 100 parts by weight of asphalt;
A compaction step of compaction after the pouring step is completed; and
A construction method of a medium-temperature modified asphalt concrete composition comprising a curing step of curing after the compaction step is completed.