KR102585106B1 - Artificial Aggregate Manufactured by Recycled Material - Google Patents

Abstract

The present invention includes recycled plastic resin, glass powder made by pulverizing waste glass, carbon fiber scrap shredded to a predetermined length, carbon fiber powder made by pulverizing carbon fiber, solid polymer resin, and solid hardener, and is extruded. It relates to an eco-friendly artificial aggregate in the form of pellets through molding and a method for manufacturing the same. The method for producing artificial aggregate according to the present invention involves putting recycled plastic resin through a hopper on the front side (upstream side) of an extruder and heating it to melt it. The first step is to do; A mixture of glass powder, carbon fiber scrap, carbon fiber powder, solid polymer resin, and solid hardener is fed through the rear (downstream) hopper of the extruder into the recycled plastic resin melted in the first step. a second step of mixing and heating; A third step of making the mixture of the second step and the recycled plastic resin into an impregnation material for extrusion in an impregnation mold heated to the reaction start temperature; A fourth step of extruding the impregnated product made in the third step through a nozzle of an extruder; And, a fifth step of manufacturing artificial aggregate by cooling the extrudate extruded in the fourth step and cutting it to a certain length with a cutter.

Description

Eco-friendly artificial aggregate and manufacturing method using recycled raw materials {Artificial Aggregate Manufactured by Recycled Material}

The present invention relates to an artificial aggregate using recycled raw materials and a method for manufacturing the same, and more specifically, to recycled thermosetting plastic resin, glass powder obtained by pulverizing waste glass, crushed carbon fiber scrap and pulverized carbon fiber powder, and liquid carbon nanotubes. , relates to an artificial aggregate mixed with a solid modified polymer resin and a solid curing agent and manufactured through extrusion molding, and a method for producing the same.

In general, road paving is mainly done using cement concrete paving or asphalt concrete paving (asphalt concrete). Among them, cement concrete pavement is composed of aggregates, cement, admixtures, admixtures, and water, and its strength is developed through the hydration reaction of cement and water. The compressive strength of general concrete after curing for 28 days is around 20 MPa, but the compressive strength standard for cement concrete for road use is not set in the design standard, and the bending strength standard for cement concrete slabs for road paving is set at 4.5 MPa or more. there is.

In the case of asphalt concrete for road paving, its strength is expressed through the bonding force between the aggregates and the adhesion of the asphalt binder due to the composition of aggregate with a volume ratio of approximately 95% and an asphalt binder with a volume ratio of approximately 5%. The strength standard for asphalt concrete for roads is set at an indirect tensile strength of 0.7 MPa or more for surface asphalt concrete. When replacing part of the natural aggregate of the above-mentioned cement or asphalt concrete mixture with artificial aggregate, the above basic physical properties must be satisfied as minimum standards.

In the case of cement concrete road pavement mixtures, most of the strength is developed by the hydration reaction of about 70% aggregate by volume and about 30% cement paste, which is a mixture of cement and water by volume, and the pozzolanic chemical reaction of alkali-aggregate. In this case, cement And while the level of strength developed is greatly influenced by the silicon dioxide (SiO ₂ ) and alumina (Al ₂ O ₃ ) content contained in the aggregate, in the case of asphalt concrete, the adhesion of the asphalt binder, which is a hydrocarbon mixture, with the aggregate Mechanical bonding is developed, and strength of approximately 80% is developed due to the bonding force between aggregates.

Cement concrete mixtures also contain aggregates of various sizes and are designed by applying the particle size specified in the specifications. Factors that affect strength development, such as slump amount of unhardened concrete, air volume, water and cement ratio, and curing temperature However, compared to asphalt concrete mixtures, the effect of the bonding force between aggregates according to aggregate particle size distribution on the strength of the mixture is relatively small.

In particular, the bonding strength between aggregates in asphalt concrete road pavement mixture composition is an important factor in maintaining durability above an appropriate level. In order to achieve maximum bonding between aggregates, the aggregate particle size must be managed within a range according to the specifications according to the use of the mixture, and the particle shape of the aggregate itself must also be adjusted to meet the standards. In the case of artificial aggregate, it is desirable to produce it in a shape with a length-to-diameter ratio in the range of 1 to 1.2 while satisfying the above standards.

However, since the management of the aggregate of asphalt concrete mixture itself is mostly managed by mixing particle size with a large upper and lower range, it is very difficult to achieve consistent mixture durability. In the case of SMA (Stone Mastic Asphalt), developed in Germany, the size of the aggregate is controlled at a single particle size, which has a great advantage in demonstrating bonding strength between aggregates, but has the disadvantage of being expensive.

In the case of SMA used on domestic highways, an asphalt binder is required to be modified to improve the response to deformation of the mixture or long-term fatigue cracks, but mixture quality control, especially aggregate particle size control, is difficult, so caution is required regarding the volatility of the durability of the final mixture. It requires

In addition, for the purpose of preventing cracks and plastic deformation of asphalt pavement, high-viscosity asphalt binder modified with polymers is used, or reinforcing fibers composed of two or more types of carbon fiber, glass fiber, aramid fiber, polyester fiber, etc. are used as an asphalt mixture. The method of installing a fiber grid mixed or woven in a two-dimensional plane isodirectionally for plane reinforcement is mainly applied. Because reinforcing fibers have both elasticity and ductility, they play a role in extending the life of asphalt when applied to asphalt construction. However, conventional reinforcing fibers made by mixing two or more different types of fibers cause a major problem during construction due to the balling phenomenon where the fibers agglomerate when producing asphalt mixtures.

In addition, when installing reinforcement on an existing asphalt base or laying asphalt where reinforcement is installed, it can stick to or become entangled in the wheels of dump trucks, finishers, temporary equipment, etc., causing problems with equipment or significantly reducing workability. There are cases.

As a prior art, Republic of Korea Patent No. 10-1494799 is manufactured by mixing scrap reinforcement made of glass fiber scrap in the form of pellets or particles, and fiber reinforcement made by coating several strands of glass fiber with polypropylene resin and forming a bundle. A glass fiber composite reinforcing material is disclosed that can be easily added at an on-site plant by adding it to a heated asphalt mixture and improves the performance of asphalt by preventing agglomeration of fibers in the produced heated asphalt mixture.

However, the glass fiber composite reinforcing material of the above registered patent is vulnerable to shear resistance due to the nature of glass fiber, and it is difficult for the rod-shaped fibers to be evenly dispersed due to the high melting point of the glass fiber outer coating material, making it difficult to inject two types of reinforcing materials on site. There are problems such as the additional cost incurred in using a separate input device.

Most artificial aggregates manufactured conventionally require firing at a temperature of 1,000°C or higher, requiring high energy consumption and high costs, and have a uniaxial compressive strength of less than 5MPa, so the compressive strength of around 20MPa, which is specified for structural use, is usually normal. There is also the problem of difficulty in replacing soft rock.

In Republic of Korea Patent No. 10-2120445, a plastic resin mixture is produced by mixing recycled plastic resin and shredded fiber, and an inorganic powder mixture is produced by mixing industrial by-product powder with modified polymer resin, wet setting hardener, and distilled water, and plastic resin. A method of manufacturing artificial aggregate is disclosed by putting a mixture and an inorganic powder mixture into an extruder and performing extrusion molding.

Conventional artificial aggregate manufactured using this manufacturing method can develop a uniaxial compressive strength of around 20MPa, so it can simultaneously solve the problem of waste plastic reprocessing and the shortage of natural aggregate during road pavement construction, and it can also eliminate carbon dioxide by using low heat energy. It provides the advantage of reducing

However, the artificial aggregate manufactured by the manufacturing method of the above-mentioned registered patent has a somewhat weak bonding force between aggregates, which reduces durability. In particular, when applied as an asphalt mixture, the shape is deformed at about 180°C, which is the mixing temperature of asphalt, and exhibits thermoplastic behavior. there is a problem.

Republic of Korea Patent No. 10-2120445 Republic of Korea Patent No. 10-1131853 Republic of Korea Patent No. 10-1494799 Japanese Patent No. 3688170 Japanese Patent Publication No. 6-287317 International Publication Patent WO 2006/112487

A study on lightweight concrete using aggregates from waste plastic products, Sang-Muk Han et al., Korean Concrete Society 2003 Spring Conference Proceedings 2003. 05. 01, pp.7 - 12

The present invention is intended to solve the above problems, and the purpose of the present invention is to provide an eco-friendly artificial aggregate using recycled raw materials that exhibits thermosetting behavior without deformation at high temperatures and has improved durability, and a method for manufacturing the same.

The eco-friendly artificial aggregate according to the present invention to achieve the above object is recycled plastic resin, glass powder made by pulverizing waste glass, carbon fiber scrap shredded to a predetermined length, carbon fiber powder made by pulverizing carbon fiber, and liquid carbon. It contains nanotubes, solid polymer resin, and solid curing agent, and is characterized in that it is in the form of a pellet through extrusion molding.

According to one form of the present invention, the artificial aggregate is 30 to 45% by weight of the recycled plastic resin and glass powder, based on 100% by weight of the main material including recycled plastic resin, glass powder, carbon fiber scrap, and carbon fiber powder. It is preferable to include 15 to 25% by weight of silver, 20 to 30% by weight of carbon fiber, 15 to 25% by weight of carbon fiber powder, and 0.5 to 1.0% by weight of liquid carbon nanotubes.

Additionally, 2 to 5 parts by weight of solid polymer resin may be mixed with 100 parts by weight of the recycled plastic resin, and 0.5 to 1.5 parts by weight of solid curing agent may be mixed with 100 parts by weight of solid polymer resin.

The glass powder is made by crushing waste glass into powder with a diameter of 0.1 mm or less, and carbon fiber scrap is a carbon fiber by-product generated in the process of producing carbon fiber by carbonizing polyacrylonitrile (PAN) with a length of 8 to 15 mm. It is made by crushing to ㎜, and the carbon fiber powder may be made by grinding the carbon fiber by-product into a powder with a diameter of 0.1 mm or less.

The glass powder preferably has a silicon dioxide (SiO ₂ ) content of 30% by weight or more.

The solid polymer resin is preferably a solid bisphenol A type epoxy resin, and the solid curing agent is preferably a solid imidazole amine-based curing agent.

The method for producing artificial aggregate according to the present invention is:

A first step of adding recycled plastic resin through a hopper on the front side (upstream side) of the extruder and melting it by heating;

A mixture of glass powder, carbon fiber scrap, carbon fiber powder, solid polymer resin, and solid hardener is fed through the rear (downstream) hopper of the extruder into the recycled plastic resin melted in the first step. a second step of mixing and heating;

A third step of making the mixture of the second step and the recycled plastic resin into an impregnation material for extrusion in an impregnation mold heated to the reaction start temperature;

A fourth step of extruding the impregnated product made in the third step through a nozzle of an extruder; and,

A fifth step of manufacturing artificial aggregate by cooling the extrudate extruded in the fourth step and cutting it to a certain length with a cutter;

may include.

A sixth step may be further included in which the artificial aggregate cut in the fifth step is put into a ball mill and molded into a cylindrical pellet.

According to the present invention, carbon is made by crushing and pulverizing glass powder made by crushing waste glass as a reinforcing material in recycled plastic resin, and carbon fiber by-products generated in the process of producing carbon fiber by carbonizing polyacrylonitrile (PAN). It is extruded by mixing fiber scrap, carbon fiber powder, solid polymer resin, and solid hardener, and has a uniaxial compressive strength equal to or higher than that of typical soft rock (limestone), thereby reducing the problem of waste plastic reprocessing and road paving. It can simultaneously solve the problem of lack of natural aggregates during construction, and has the effect of reducing carbon dioxide by using low heat energy.

In particular, the artificial aggregate according to the present invention is composed of a mixture of carbon fiber scrap and carbon fiber powder as reinforcing materials in recycled plastic resin and the addition of solid polymer resin and solid hardener, so when artificial aggregate is used in asphalt mixture, it has a high The effect of thermosetting behavior can be achieved without the shape being deformed at temperature.

Figure 1 is a photograph of a prototype of artificial aggregate according to an embodiment of the present invention.
Figure 2 is a photograph showing carbon fiber scrap and carbon fiber powder mixed with artificial aggregate according to the present invention.
Figure 3 is a configuration diagram showing an embodiment of a manufacturing device for manufacturing artificial aggregate according to the present invention.

The embodiments described in this specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and at the time of filing this application, there may be various modifications that can replace the embodiments and drawings in this specification.

Hereinafter, with reference to the attached drawings, an eco-friendly artificial aggregate using recycled raw materials and a method for manufacturing the same will be described in detail according to the embodiments described below. In the drawings, like symbols represent like components.

Figure 1 shows an artificial aggregate according to an embodiment of the present invention, which includes recycled plastic resin, glass powder made by pulverizing waste glass, carbon fiber scrap shredded to a predetermined length, and carbon fiber powder made by pulverizing carbon fiber. , liquid carbon nanotubes, solid polymer resin, and solid curing agent are put into an extruder, heated and extruded, and then the extruded product is cooled and cut to a certain length to form it. In the conventional artificial aggregate manufacturing technology, It is an artificial aggregate using a polymer bond base that enables compressive strength of more than 20 MPa, which is typically the level of soft rock, without the 1300°C sintering process used.

The artificial aggregate (1) of the present invention is 100% by weight of the main material including recycled plastic resin, glass powder made by pulverizing waste glass, carbon fiber scrap shredded to a predetermined length, and carbon fiber powder made by pulverizing carbon fiber. In comparison, the recycled plastic resin is 30 to 45% by weight, glass powder is 15 to 25% by weight, carbon fiber scrap is 20 to 30% by weight, carbon fiber powder is 15 to 25% by weight, and liquid carbon nanotubes are 0.5 to 1.0% by weight. % may be included.

Additionally, 2 to 5 parts by weight of solid polymer resin may be mixed with 100 parts by weight of the recycled plastic resin, and 0.5 to 1.5 parts by weight of solid curing agent may be mixed with 100 parts by weight of solid polymer resin.

Recycled plastic resin can be, for example, PET plastic resin, or PET waste plastic pulverized into heterogeneous flakes without a separate pelletizing process can be used. The recycled plastic resin is preferably mixed within the range of 30 to 45% by weight of the main materials including recycled plastic resin, glass powder, carbon fiber scrap, and carbon fiber powder. If the content of recycled plastic resin is less than 30% by weight of the main material, extrusion molding is difficult, and if it exceeds 45% by weight, the amount of glass powder, carbon fiber scrap, and carbon fiber powder may be excessively reduced, thereby affecting the physical properties of the artificial aggregate. The improvement effect may be significantly reduced.

Recycled plastic resin can be selectively used as thermosetting plastic or thermoplastic plastic depending on the final use of the artificial aggregate. If the recycled plastic resin is a thermoplastic plastic called polyethylene terephthalate (PET), it can be used alone, but it is preferable to extrude at an extrusion temperature of at least 250 ℃ and a viscosity of 1 Pa.s or less. In addition, in the case of thermoplastic plastics, it is desirable to use a mixed resin that is a mixture of recycled low-density polyethylene and new low-viscosity polypropylene, and to extrude at an extrusion temperature of at least 200 ℃. Additionally, it is desirable for the mixed resin to maintain a viscosity of 0.5 Pa.s or less at 135°C.

The glass powder is preferably made by grinding non-recyclable colored empty waste glass bottles to a diameter of 0.1 mm or less to increase the specific surface area and secure the required specific gravity, and is used for inorganic cement hydration reaction or adhesion with organic asphalt binder. For strengthening and improving reactivity with solid polymer resin, it is preferable that the silicon dioxide (SiO ₂ ) content is 30% by weight or more.

Referring to Figure 2, the carbon fiber scrap impregnated with the recycled plastic resin is made by crushing carbon fiber by-products generated in the process of producing carbon fiber by carbonizing polyacrylonitrile (PAN) into 8 to 15 mm in length. . Carbon fiber powder is obtained by pulverizing the carbon fiber by-product to a size of 0.1 mm or less and is input through the solid polymer resin and the rear hopper of the extruder.

The solid polymer resin and solid curing agent are a solid bisphenol A type epoxy resin and a solid imidazole amine curing agent, respectively. The softening point of the solid polymer resin is 90 to 100°C, and the reaction initiation temperature is In the range of 160°C to 200°C, the pot life to full cure can take 20 to 40 seconds. The solid polymer resin is mixed in advance with glass powder, carbon fiber scrap, and carbon fiber powder in the rear hopper 120 (see FIG. 3) of the extruder 100 (see FIG. 3) and placed in an impregnation mold 130 (see FIG. 3). It is desirable to supply it to reference).

Liquid carbon nanotubes are a form in which carbon nanotube powder is dispersed in isopropyl alcohol. Carbon nanotubes can be single-walled carbon nanotubes (SWCNTs) or multi-walled carbon nanotubes (MWCNTs). The diameter is preferably 5 to 30㎛, and the content is preferably 0.5 to 1.0% by weight. Carbon nanotubes are the same hydrocarbon-based material as plastic resin and carbon fiber, and the very small cavities formed in the carbon nanotubes at the interface between recycled plastic resin and carbon fiber exhibit properties that enhance adhesion performance.

The method of manufacturing the artificial aggregate (1) of the present invention will be described with reference to FIG. 3 as follows.

For example, recycled plastic resin in a flake state made of PET is fed through the front hopper 110 disposed on the front side (upstream side) of the extruder 100, and the recycled plastic resin is screwed at about 270 degrees above the melting point. 140) to transport it to the rear (downstream side).

Then, a mixture of glass powder, hot air-dried carbon fiber scrap, carbon fiber powder, liquid carbon nanotubes, solid polymer resin, and solid hardener is introduced into the rear hopper 120 of the extruder 100.

The molten recycled plastic resin transported through the screw 140 and the mixture supplied from the rear hopper 120 are used to create an impregnation for extrusion in an impregnation mold 130 heated to 160 to 200 degrees Celsius, which is the reaction start temperature. .

The impregnated material thus prepared is heated at a final temperature of about 160 to 180° C. in the extruder 100 and extruded through a nozzle of the target size of the aggregate.

The extruded product is cooled while passing through the cooling water tank 200, and is then cut into a predetermined shape and size by a cutter 300 to first form artificial aggregate.

The diameter of the first formed artificial aggregate can be produced by varying the size of the extrusion nozzle of the extruder 100 depending on the use of the artificial aggregate, and is preferably 5 to 30 mm, more preferably 5 to 10 mm. It is cut to have a diameter of ㎜, and the first formed artificial aggregate (1) is put into a ball mill to produce a cylindrical pellet with a ratio of the length and diameter of the final artificial aggregate maintained in the range of 1 to 1.2.

Artificial aggregate (1) manufactured in this way can be mixed with aggregate and asphalt binder in a plant mixer and used as an asphalt mixture. In this case, the recycled plastic resin used in the production of artificial aggregate (1) has a melting point of 250°C or higher. It is preferred to use thermoplastic or thermoset plastic.

In an asphalt mixture, the artificial aggregate (1) of the present invention can be used by replacing sand, crushed stone, gravel, etc. in some volume ratio. The thickness of the artificial aggregate (1) is not particularly limited, but it is preferable to selectively use 4.75 mm (No. 4) or 10 mm (No. 2) aggregate.

The asphalt binder used in the asphalt mixture may be straight asphalt, blown asphalt, etc., and is not particularly limited. The asphalt binder may be 1 to 30% by weight, preferably 3 to 20% by weight, based on the total weight of the asphalt mixture.

In the process of manufacturing an asphalt mixture, asphalt reinforcement, aggregate, and asphalt binder are mixed in the above weight ratio, and in this process, it is preferable to heat the mixture to a temperature of 120 to 170 ° C. It is desirable that the artificial aggregate of the present invention maintains its original shape at the above mixing temperature.

When artificial aggregates are used in inorganic construction or road cement concrete mixtures, thermoplastic resins can be used, and coarse or fine aggregates can be selectively substituted according to the cement concrete mix design.

Example

Three types of artificial aggregate specimens were manufactured using polyethylene terephthalate (PET), a thermoplastic resin, as a recycled plastic resin, and their uniaxial compressive strength was tested.

PET recycled plastic resin was adopted at 34% by weight based on the weight of the artificial aggregate main material (recycled plastic resin + glass powder + carbon fiber scrap + carbon fiber powder + liquid single-walled carbon nanotube), and the glass powder was crushed to a diameter of 0.1 mm or less. 26% by weight of the artificial aggregate main material was adopted, and 22% by weight of the artificial aggregate main material was adopted for carbon fiber scrap shredded to a length of about 10 mm ± 2 mm. Additionally, 17% by weight of the carbon fiber powder ground to a diameter of 0.1 mm or less was adopted compared to the weight of the artificial aggregate main material, and 1% by weight of the liquid single-walled carbon nanotube was adopted.

The above four mixtures that physically constitute the aggregate form the appearance of the artificial aggregate, and the first solid polymer resin added to induce the polymer binding reaction is 4% by weight of the weight of PET recycled plastic resin, solid type. The second material, which is a curing agent, was produced in an example as shown in Table 1 below with a composition of 1.0% by weight of the polymer of the first material.

In the case of the comparative example, 10 MPa, which is the compressive strength of general soft rock, was set as the target value.

art
Aggregate main material glass powder carbon fiber
scrap carbon fiber
powder
Liquid carbon nanotubes PET resin ratio PET resin
Weight (g) solid polymer resin solid type
hardener PET weight ratio Primary goods (g) Weight ratio of first agent (g) 1kg 26% by weight 22% by weight 17% by weight 1% by weight 34% by weight 350.0 4% by weight 14.0 0.14

division cross-sectional area
(㎟) height
(㎜) Max. Load
(kgf) Max. Load
(N) Uniaxial compressive strength
(kgf/㎟) Uniaxial compressive strength
(MPa) Example specimen 2500 50 4760 46679 321.2 31.5

As a result of the uniaxial compressive strength test on the specimen of the above-mentioned example, a compressive strength of 31.5 MPa was developed, which is above the level of typical soft rock (limestone), showing a strength that can be used by replacing natural aggregate.

Asphalt concrete road pavement aggregates for surface or base layers have a maximum aggregate size ranging from 25 mm to 0.075 mm. The amount of 4.75 mm aggregate used is approximately 20 to 30 vol% by volume, and it is the first aggregate to fill the voids formed by the aggregate. It is treated as a primary control seive (PCS), which plays a very important role in providing bonding strength by aggregate.

Therefore, the size of artificial aggregate can be adjusted depending on the size of the injection nozzle used for injection molding, but when used in asphalt mixture, it must be manufactured to have a size corresponding to the size of No. 4 (diameter 4.75 mm) among road paving aggregates. You can. Artificial aggregate can be used as a replacement material by adding part of the total volume of the mixture considering economic efficiency, and has the advantage of reducing the weight of the aggregate subject to replacement compared to alternative artificial aggregate during plant production. to provide.

The artificial aggregate of the present invention as described above is composed of a mixture of carbon fiber scrap and carbon fiber powder as reinforcing materials in recycled plastic resin and the addition of solid polymer resin and solid hardener, so artificial aggregate is used in asphalt mixtures. In this case, there is an advantage of thermosetting behavior without shape deformation at high temperatures.

In the above, the present invention has been described in detail with reference to examples, but those skilled in the art will be able to make various substitutions, additions, and modifications without departing from the technical spirit described above. It is natural, and such modified embodiments should also be understood as falling within the scope of protection of the present invention as defined by the patent claims attached below.

1: Artificial aggregate 100: Extruder
110: front hopper 120: rear hopper
130: Impregnation frame 140: Screw
200: cooling water tank 300: cutter

Claims (11)

Recycled plastic resin, glass powder made by pulverizing waste glass, carbon fiber by-products generated in the process of producing carbon fiber by carbonizing polyacrylonitrile (PAN), carbon fiber scrap made by crushing the above into 8 to 15 mm in length, It contains carbon fiber powder made by pulverizing carbon fiber by-products into a powder with a diameter of 0.1 mm or less, a solid polymer resin, a solid curing agent, and liquid carbon nanotubes in which carbon nanotube powder is dispersed in isopropyl alcohol,
Artificial aggregate made into pellets through extrusion molding. delete The method of claim 1, wherein, based on 100% by weight of the main material including the recycled plastic resin, glass powder, carbon fiber scrap, and carbon fiber powder, the recycled plastic resin is contained in an amount of 30 to 45% by weight, and the glass powder is contained in an amount of 15 to 25% by weight. %, artificial aggregate containing 20-30% by weight of carbon fiber scrap, 15-25% by weight of carbon fiber powder, and 0.5-1.0% by weight of liquid carbon nanotubes. The method of claim 3, wherein the solid polymer resin is mixed in an amount of 2 to 5 parts by weight based on 100 parts by weight of the recycled plastic resin, and the solid hardener is an artificial aggregate mixed in an amount of 0.5 to 1.5 parts by weight based on 100 parts by weight of the solid polymer resin. . The artificial aggregate according to claim 1, wherein the glass powder is obtained by pulverizing waste glass into powder with a diameter of 0.1 mm or less. The artificial aggregate of claim 5, wherein the glass powder has a silicon dioxide (SiO ₂ ) content of 30% by weight or more. The artificial aggregate of claim 1, wherein the solid polymer resin is a solid bisphenol A type epoxy resin, and the solid curing agent is a solid imidazole amine-based curing agent. A method for producing the artificial aggregate according to any one of claims 1 and 3 to 7,
A first step of adding recycled plastic resin through a hopper on the front side (upstream side) of the extruder and melting it by heating;
A mixture of glass powder, carbon fiber scrap, carbon fiber powder, solid polymer resin, solid hardener, and liquid carbon nanotubes is fed through the rear (downstream) hopper of the extruder and melted in the first step. A second step of mixing and heating the recycled plastic resin;
A third step of making the mixture of the second step and the recycled plastic resin into an impregnation material for extrusion in an impregnation mold heated to the reaction start temperature;
A fourth step of extruding the impregnated product made in the third step through a nozzle of an extruder; and,
A fifth step of manufacturing artificial aggregate by cooling the extrudate extruded in the fourth step and cutting it to a certain length with a cutter;
A method of manufacturing artificial aggregate comprising. The method of claim 8, further comprising a sixth step of putting the artificial aggregate cut in the fifth step into a ball mill and forming it into a cylindrical pellet. delete An asphalt mixture comprising an asphalt binder and the artificial aggregate according to any one of claims 1 and 3 to 7.

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