KR102416515B1 - Modified asphalt-based eco-friendly composition for rapid repairing road pavement using recycled lightweight aggregate and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a recycled lightweight aggregate comprising: 65-85 wt% of an aggregate including a bottom ash lightweight aggregate and an artificial lightweight aggregate; 0.1-5 wt% of a filling material; and 10-30 wt% of a modified asphalt binder. The modified asphalt binder includes: 70-80 wt% of asphalt; 5-15 wt% of an acetate-containing solvent; 1-10 wt% of a performance-modified admixture; 1-10 wt% of hydrogenated hard purified oil; and 0.5-5 wt% of a dimer acid. The performance-modified admixture includes: 100 parts by weight of alkyd resin; 30-50 parts by weight of a styrene butadiene styrene copolymer; and 30-50 parts by weight of polyester resin. The filling material includes: 10-30 parts by weight of fly ash; and 10-30 parts by weight of slaked lime based on 100 parts by weight of stone powder. The present invention relates to a modified asphalt-based eco-friendly repair material composition for emergency repair of a road using a recycled lightweight aggregate and a manufacturing method thereof. The modified asphalt-based eco-friendly repair material composition includes the bottom ash lightweight aggregate and the artificial lightweight aggregate recycled from bottom ash which is a waste resource; is packed in an airtight packaging material; is eco-friendly; reduces costs; remarkably reduces burden of a worker by easily performing transportation, storage, and construction; satisfies properties such as fast hardness, excellent initial and long-term strength, underwater curing stability, waterproofness, chemical resistance, fluidity resistance, and heat stability; and prevents plastic deformation, aging, and/or peeling.

Description

Modified asphalt-based eco-friendly composition for rapid repairing road pavement using recycled lightweight aggregate and manufacturing method thereof

The present invention includes bottom ash lightweight aggregate and artificial lightweight aggregate from recycled bottom ash (bottom ash), a waste resource, and is bagged in an airtight packaging material, so it is eco-friendly and cost-saving, as well as easy transportation, storage and construction, It can dramatically reduce the burden on the operator, and it satisfies physical properties such as rapid hardening, excellent initial and long-term strength, water curing stability, waterproofness, chemical resistance, flow resistance, thermal stability, and plastic deformation, aging and / or peeling. It relates to a modified asphalt-based eco-friendly repair material composition for emergency repair of roads using circulating lightweight aggregate that can be prevented, and a method for manufacturing the same.

In general, roads deteriorate over time and damage occurs due to repeated vehicle loads, rain or snow, and environmental factors caused by climate change such as temperature changes. Moreover, in recent years, due to the increase in the size of vehicles and the increase in traffic volume, the damage to the road is gradually expanding, and the repair period is getting faster and repair parts are also occurring frequently. In particular, the aggregate is desorbed by moisture penetrating into the road, resulting in potholes or cracks that form holes in part of the pavement and the interface. Because it causes traffic accidents, emergency repair work must be carried out on a large scale. Therefore, roads must be repaired at an appropriate time, such as after the extreme cold season or rainy season accompanied by heavy snow. do. In addition, since the life cycle of a road can vary depending on how it is maintained, it is very important to select an appropriate repair time and repair method during the life cycle of the pavement.

In the conventional repair work for paved roads, the repair work using the asphalt mixture at room temperature mixed with aggregate at the factory and paved in a bale was widely used. However, the conventional room temperature asphalt mixture has problems with low initial strength, flow resistance and water resistance, so maintenance performance is low and maintenance life is short.

In order to improve the above problems, asphalt is mixed with moisture-curing urethane resin as a binder, and after mixing the aggregate, these are sealed in an expensive bale where moisture does not penetrate, and manufactured in a factory, and pavement repair. A room temperature asphalt mixture using moisture-curable urethane resin that was installed on the site and then cured by pouring water on it was used. However, while the room temperature asphalt mixture using the moisture-curable urethane resin has excellent strength and flow resistance, the aggregate must be completely dried during manufacturing, and when moisture penetrates during mixing, transport or storage, the moisture-curable urethane resin is cured There was a problem that the whole had to be discarded. In addition, since the room temperature asphalt mixture using the moisture-curable urethane resin needs to be cured by pouring water into the repair part, not only the workability is reduced due to the increase in the process, but also the cost is increased due to the production of a special bale for blocking moisture. .

Therefore, it is bagged in an airtight packaging material to facilitate transport and storage, and it can be used easily by workers in the field without a separate mixing facility. There is an urgent need for the development of an asphalt-based repair material that is excellent.

On the other hand, aggregate for road paving is a granular material, has various shapes and sizes, and is classified into lightweight aggregates and general aggregates according to specific gravity. Among them, lightweight aggregate is lighter than sand or gravel and has excellent transport and workability. In particular, there is an advantage that can significantly reduce the burden on the transport and work of the worker when the repair material mixed with asphalt and aggregate is packaged and worked.

Meanwhile, domestic production of fly ash (fly ash) and bottom ash (bottom ash), which are by-products generated from coal-fired power plants, is more than 10 million tons per year, so there is a need for a plan to utilize them. Among them, fly ash (fly ash) accounts for about 80% of domestic coal ash, and is mostly consumed as a raw material for cement and admixture for concrete. On the other hand, bottom ash (bottom ash) is attached to the furnace wall, superheater, and reheater of a coal-fired power plant and falls to the bottom of the boiler under its own weight. Due to its high absorption rate, bottom ash alone is difficult to be used as a cement admixture or as a base material for road pavement. It is causing problems.

Accordingly, there is a great need to develop an eco-friendly technology that can recycle bottom ash (bottom ash), a waste resource, as a recycled lightweight aggregate, and can dramatically lower the burden on transport and work of workers.

Republic of Korea Patent Registration No. 10-1522505 Republic of Korea Patent No. 10-1804795 Republic of Korea Patent Registration No. 10-2077054 Republic of Korea Patent Registration No. 10-2087387

The present invention has been devised to solve the above problems, and an embodiment of the present invention is bagged in an airtight packaging material, so it is easy to transport and store, and a worker can easily construct it in the field, and bottom ash as a waste resource (bottom ash) is recycled as a recycled lightweight aggregate, which is eco-friendly and can dramatically reduce the burden of transport and work for workers, while also providing rapid hardening, initial and long-term strength, underwater hardening stability, waterproofness, fluidity resistance, thermal stability, etc. An object of the present invention is to provide a modified asphalt-based eco-friendly repair material composition for emergency repair of roads using recycled lightweight aggregate that satisfies the physical properties of , and a manufacturing method thereof.

Various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

One embodiment of the present invention is a recycled lightweight aggregate, comprising: 65 to 85% by weight of aggregate including bottom ash lightweight aggregate and artificial lightweight aggregate, 0.1 to 5% by weight of filler and 10 to 30% by weight of modified asphalt binder;

The modified asphalt binder includes 70 to 80% by weight of asphalt, 5 to 15% by weight of an acetate-containing solvent, 1 to 10% by weight of a performance modifier, 1 to 10% by weight of hydrotreated light refined oil, and 0.5 to 5% by weight of dimer acid to do;

The performance modifying admixture includes 100 parts by weight of an alkyd resin, 30 to 50 parts by weight of a styrene-butadiene-styrene copolymer, and 30 to 50 parts by weight of a polyester resin;

The filler provides a modified asphalt-based eco-friendly repair material composition for emergency repair of roads using recycled lightweight aggregate, which includes 10 to 30 parts by weight of fly ash (fly ash) and 10 to 30 parts by weight of slaked lime with respect to 100 parts by weight of stone dust. .

The artificial lightweight aggregate contains hydrophobic magnetite on its surface;

The artificial lightweight aggregate containing hydrophobic magnetite on the surface is prepared by spraying a composition for surface treatment on the artificial lightweight aggregate and then heat-treating it in an inert atmosphere and at a temperature of 250 to 400 °C;

The composition for surface treatment may include 0.1 to 10 parts by weight of FeO(OH), 0.1 to 10 parts by weight of oleic acid, and 0.01 to 5 parts by weight of arachidylamine, based on 100 parts by weight of the octadecane solvent.

The composition for surface treatment further comprises 0.01 to 5 parts by weight of sponge powder;

The sponge powder is a sponge powder having a needle-like structure;

A pulverizing step of pulverizing the spongy powder having the needle-like structure to produce a spongy powder; A reaction step of reacting the sponge powder by adding it to an aqueous hydrochloric acid solution having a concentration of 20 to 50% by weight of 10 to 20 times by weight; A first stirring step of filtering the sponge powder after the reaction step with a filter of 200 to 300 mesh, and then adding the sponge powder after filtering through the filter into water 5 to 10 times by weight and stirring; a second stirring step of adding the sponge powder after the first stirring step to oleyl alcohol and stirring; and drying the sponge powder after the second stirring step at a temperature of 60 to 100° C. to produce a sponge powder having a needle-like structure.

The performance-modifying admixture further comprises 10 to 30 parts by weight of a polyphenylene ether resin based on 100 parts by weight of the alkyd resin;

The polyphenylene ether resin may be a copolymer of poly(2,6-dimethyl-1,4-phenylene) ether and poly(2,3,6-trimethyl-1,4-phenylene) ether.

The filling material will further include 0.1 to 10 parts by weight of graphene oxide based on 100 parts by weight of stone powder;

The graphene oxide is sulfur-containing graphene oxide;

The sulfur-containing graphene oxide is prepared by adding graphene oxide to distilled water at a concentration of 0.8 to 1.5 mg/ml, and then dispersing it through ultrasonic treatment (ultra sonification) to prepare a graphene oxide (GO) dispersion; Prepare a solution of sodium polysulfide (Na ₂ S _x , x = 2 to 5) by mixing and dissolving 1 to 4 mol/L sulfur (S) and 1 mol/L sodium sulfide (Na ₂ S) in distilled water to do; After mixing the respectively prepared graphene oxide (GO) dispersion and sodium polysulfide (Na ₂ S _x , x = 2 to 5) solution in a volume ratio of 0.7 to 1.5: 1, ultrasonic treatment (ultra sonification) Dispersing to prepare a GO-Na ₂ S _x mixed solution; Titrating the prepared GO-Na ₂ S _x mixed solution into a 1 to 10 mol/L formic acid (HCOOH) solution to form a sulfur-containing graphene oxide composite precipitate; Filtering and washing the formed sulfur-containing graphene oxide composite precipitate, followed by drying, to prepare a sulfur-containing graphene oxide composite; and heat-treating the prepared sulfur-containing graphene oxide composite in an inert gas atmosphere and 150 to 200° C. for 18 to 36 hours to prepare sulfur-containing graphene oxide.

On the other hand, another embodiment of the present invention is a method of manufacturing a modified asphalt-based eco-friendly repair material composition for emergency repair of a road using the cyclic lightweight aggregate;

mixing an acetate-containing solvent, a performance modifier, hydrotreated light refined oil, and dimer acid at a temperature of 40 to 50° C. to prepare a reformed mixture; After stirring and melting the asphalt at a temperature of 120 to 200 ℃, lowering the molten asphalt to a temperature of 80 to 90 ℃, mixing with the prepared modified mixture, preparing a modified asphalt binder; Dry mixing of the filler material with the aggregate containing the low ash lightweight aggregate and artificial lightweight aggregate; After maintaining the prepared modified asphalt binder at a temperature of 40 to 50 ° C., the dry mixed low ash lightweight aggregate and the aggregate including the artificial lightweight aggregate and the filler are mixed, and the modified asphalt system for emergency repair of the road using the circulating lightweight aggregate preparing an eco-friendly repair material composition; and packaging the modified asphalt-based eco-friendly repair material composition for emergency repair of a road using the prepared circulating lightweight aggregate in an airtight pavement material. A manufacturing method is provided.

According to the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using circulating lightweight aggregate according to an embodiment of the present invention and a method for manufacturing the same, it is bagged in an airtight packaging material, so transport and storage are easy, and without a separate mixing facility There is an effect that the operator can easily measure the amount of use in the field and easily construct it on the surface to be repaired, such as a pothole. In addition, as a recycled lightweight aggregate, including bottom ash lightweight aggregate and artificial lightweight aggregate from recycled bottom ash (bottom ash), which is a waste resource, it is eco-friendly and cost-saving, as well as dramatically lowering the burden on the transport and work of workers. There is an effect that can be given.

In addition, it satisfies physical properties such as excellent initial and long-term strength, water curing stability, waterproofness, chemical resistance, flow resistance, and thermal stability, and has an effect of preventing plastic deformation, aging and/or peeling. In addition, since it has a quick-hardening property and can be repaired quickly, there is an effect that can minimize the traffic congestion caused by the shortening of the repair time.

1 shows an actual image of a test body of diameter × height 101 mm × 63.5 mm manufactured for physical property evaluation in Test Example 1 of the present invention.
Figure 2 shows an image of the lightness evaluation result of Test Example 1 of the present invention.
3 shows the curing stability test procedure in water for the modified mixture of the present invention.
4 shows a schematic flowchart and construction image of a road emergency repair method using the modified asphalt-based eco-friendly repair material composition for emergency repair of a road using the circulating lightweight aggregate of the present invention.

Hereinafter, embodiments of the present invention will be described in detail. However, this is provided as an example, and the present invention is not limited thereto, and the present invention is only defined by the scope of the claims to be described later.

One embodiment of the present invention is a recycled lightweight aggregate, comprising: 65 to 85% by weight of aggregate including bottom ash lightweight aggregate and artificial lightweight aggregate, 0.1 to 5% by weight of filler and 10 to 30% by weight of modified asphalt binder;

The modified asphalt binder includes 70 to 80% by weight of asphalt, 5 to 15% by weight of an acetate-containing solvent, 1 to 10% by weight of a performance modifier, 1 to 10% by weight of hydrotreated light refined oil, and 0.5 to 5% by weight of dimer acid to do;

The performance modifying admixture includes 100 parts by weight of an alkyd resin, 30 to 50 parts by weight of a styrene-butadiene-styrene copolymer, and 30 to 50 parts by weight of a polyester resin;

The filler provides a modified asphalt-based eco-friendly repair material composition for emergency repair of roads using recycled lightweight aggregate, which includes 10 to 30 parts by weight of fly ash (fly ash) and 10 to 30 parts by weight of slaked lime with respect to 100 parts by weight of stone dust. .

According to the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using circulating lightweight aggregate according to an embodiment of the present invention and a method for manufacturing the same, it is bagged in an airtight packaging material, and transport and storage are easy, and a separate mixing facility There is an effect that the operator can easily measure the amount of use on site without the need for construction on the surface to be repaired, such as a pothole. In addition, as a recycled lightweight aggregate, including bottom ash lightweight aggregate and artificial lightweight aggregate from recycled bottom ash (bottom ash), which is a waste resource, it is eco-friendly and cost-saving, as well as dramatically lowering the burden on the transport and work of workers. There is an effect that can be given.

In addition, it satisfies physical properties such as excellent initial and long-term strength, water curing stability, waterproofness, chemical resistance, flow resistance, and thermal stability, and has an effect of preventing plastic deformation, aging and/or peeling. In addition, since it has a quick-hardening property and can be repaired quickly, there is an effect that can minimize the traffic congestion caused by the shortening of the repair time.

More specifically, the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using recycled lightweight aggregate according to an embodiment of the present invention is a recycled lightweight aggregate, and 65 to 85% by weight of aggregate comprising low ash lightweight aggregate and artificial lightweight aggregate , 0.1 to 5% by weight of a filler and 10 to 30% by weight of a modified asphalt binder.

First, the aggregate may be preferably used as a recycled lightweight aggregate, including bottom ash lightweight aggregate using bottom ash (bottom ash) as a waste resource and artificial lightweight aggregate.

General bottom ash (bottom ash) is a material that is solidified by burning coal in a coal-fired power plant and then falling to the bottom of the boiler in a state where particles are formed by sintering among the ash attached to furnace walls, superheaters, and reheaters. As a result, it has a similar particle size to sand, has an irregular particle shape, has porosity, and has light weight and humidity control characteristics.

In the present invention, by using the bottom ash lightweight aggregate and artificial lightweight aggregate utilizing such bottom ash (bottom ash), the granulation rate of the composition is easily controlled and the distribution between particles is maintained in an optimal state to improve strength and general physical properties, and reactivity It is possible to realize the effect of continuous strength expression by the enhancement and weight reduction and durability enhancement due to the characteristics of the porous structure.

In consideration of the above-described improvement effect, the aggregate may be contained in an amount of 65 to 85% by weight in the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using the circulating lightweight aggregate according to an embodiment of the present invention.

More specifically, in consideration of the effects of strength, weight reduction and durability enhancement, as the aggregate, a mixture of low ash lightweight aggregate and artificial lightweight aggregate in a weight ratio of 1 to 2: 1 may be preferably used.

First, the bottom ash lightweight aggregate is prepared by pulverizing bottom ash (bottom ash) generated in a coal-fired power plant using a grinder, and has an average particle size of 5 to 10 mm or less, and a density of 1 to 2 g/cm ³ , 600 to 1,200 Kg/m ³ may be used more preferably having a unit volume mass and a water absorption of 2 to 20%.

In addition, the artificial lightweight aggregate is prepared by pulverizing bottom ash (bottom ash) generated in a coal-fired power plant using a pulverizer, mixing with separately pulverized dredged soil, calcining and foaming at a high temperature, and having an average particle size of 5 to 10 mm or less, and a density of 1 to 2 g/cm ³ , a unit volume mass of 700 to 1,200 Kg/m ³ , and a water absorption of 5 to 15% may be more preferably used.

More specifically, the artificial lightweight aggregate includes a grinding step of grinding bottom ash (bottom ash) and dredged soil to an average particle diameter of 1 to 10 mm, respectively, using a separate grinder; transferring 100 parts by weight of bottom ash (bottom ash) and 40 to 60 parts by weight of dredged soil to a mixing hopper and mixing them; transferring the raw materials mixed in the mixing hopper to a mixing grinder, mixing and grinding to an average particle diameter of 100 μm or less; After mixing the mixed and pulverized blending raw material in a molding mixer, molding the blended raw material into a spherical shape in a regular circulator; And it can preferably be used that is prepared by a manufacturing method comprising the step of calcining the molded body that has undergone the forming step at a temperature of 1000 to 1100 ℃ in a calcination furnace.

At this time, the dredged soil is sprayed and mixed with 1 to 5 parts by weight of a microorganism culture solution having a concentration of 1.0×10 ⁶ to 1.0×10 ¹¹ cfu/g with respect to 100 parts by weight of the dredged soil before the pulverization step, and then at 25 to 45 ° C. What is prepared by aging for 24 to 72 hours at a temperature can be used more preferably. Accordingly, the effect of reducing the weight and improving strength can be further improved, and there is an effect of more effectively preventing plastic deformation, aging and/or peeling.

In this case, microorganisms that can be used as the microbial culture medium include Bacillus subtilis; Pseudomonas fluorescence; Clostridium; Saccharomyces Cerevisiae; Lactobacillus bulgaris (Lactobacillus bulgaris); Lactobacillus plantarum (Lactobacillus plantarum); Lactobacillus acidopilus (Lactobacillus acidopilus); At least one selected from the group consisting of Bacillus thuringiensis and mixed microorganisms thereof may be used.

In addition, by using the artificial lightweight aggregate containing hydrophobic magnetite on the surface, there is an effect that can further improve the effect of weight reduction and strength improvement. In addition, by improving physical properties such as long-term strength, water curing stability, waterproofness, thermal stability, there is an effect that can prevent plastic deformation, aging and / or peeling.

The artificial lightweight aggregate containing hydrophobic magnetite on the surface may be manufactured by spraying a composition for surface treatment on the artificial lightweight aggregate and then heat-treating it in an inert atmosphere and at a temperature of 250 to 400 ℃; The composition for surface treatment may include 0.1 to 10 parts by weight of FeO(OH), 0.1 to 10 parts by weight of oleic acid, and 0.01 to 5 parts by weight of arachidylamine, based on 100 parts by weight of the octadecane solvent.

More specifically, the octadecane solvent functions to improve workability so that the composition for surface treatment can be evenly and easily sprayed on the artificial lightweight aggregate, and functions to hydrophobically modify the surface of the artificial lightweight aggregate.

The FeO(OH) functions as a precursor particle capable of synthesizing magnetite particles by thermal decomposition.

The FeO(OH) is preferably contained in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the octadecane solvent. When the content of FeO(OH) is too small, there is a problem that the above-described improvement effect may be insufficient. There are possible problems.

The oleic acid serves as a lipophilic surfactant and, together with the octadecane solvent, improves workability so that the composition for surface treatment can be easily and evenly sprayed on the artificial lightweight aggregate.

The oleic acid is preferably contained in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the octadecane solvent. When the content of the oleic acid is too small, there is a problem that the above-mentioned improvement effect may be insufficient, and when the content of the oleic acid is too large, it is difficult to expect any further improvement effect, and there is a problem that price competitiveness may be lowered.

The arachidylamine, together with the octadecane solvent, functions to hydrophobically modify the surface of the artificial lightweight aggregate, and to allow the magnetite particles generated by thermal decomposition to be attached to the surface of the artificial lightweight aggregate with excellent adhesion. .

The arachidylamine is preferably contained in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the octadecane solvent. When the content of arachidylamine is too small, there is a problem that the above improvement effect may be insufficient, and when the content of arachidylamine is too large, it is difficult to expect any further improvement effect and price competitiveness There is a problem.

In addition, the composition for surface treatment may further include 0.01 to 5 parts by weight of a sponge powder based on 100 parts by weight of the octadecane solvent, to greatly improve the adhesion of the circulating lightweight aggregate to improve curing stability in water, cracks and aggregates desorption can be effectively prevented.

In particular, the above-described improvement effect can be further improved by using the sponge powder having a needle-like structure.

More specifically, the spongy powder having the needle-like structure is a pulverizing step of pulverizing the spongy to prepare a spongy powder; A reaction step of reacting the sponge powder by adding it to an aqueous hydrochloric acid solution having a concentration of 20 to 50% by weight of 10 to 20 times by weight; A first stirring step of filtering the sponge powder after the reaction step with a filter of 200 to 300 mesh, and then adding the sponge powder after filtering through the filter into water 5 to 10 times by weight and stirring; a second stirring step of adding the sponge powder after the first stirring step to oleyl alcohol and stirring; and drying the sponge powder after the second stirring step at a temperature of 60 to 100° C. to produce a sponge powder having a needle-like structure.

At this time, the sponge may be a hexagonal sponge (hexactinellid sponge), preferably, may be a Venus Flower Basket. In addition, it is preferable that the average particle diameter of the pulverized sponge powder is 20 to 200 μm.

In addition, the second stirring step of stirring the sponge powder after the first stirring step by adding it to oleyl alcohol, a hydrophobic solvent, is performed by adding the sponge powder to oleyl alcohol, which is a hydrophobic solvent with 2 to 5 times the weight, and stirring. It is preferable to be

In addition, the aggregate may further include a conventional aggregate generally used in the art in an amount of 20 to 40% by weight of the total aggregate. Non-limiting examples of such conventional aggregates, natural or artificial crushed stone, gravel, sand, stone dust, and the like may be used.

On the other hand, the filler fills the voids between the aggregates, and by making the density of the composition dense, not only improves physical and mechanical performance such as tensile and compressive strength, but also provides waterproofness and durability.

In consideration of the above-described improvement effect, the filler may be contained in an amount of 0.1 to 5% by weight in the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using recycled lightweight aggregate according to an embodiment of the present invention.

More specifically, the filler may preferably include 10 to 30 parts by weight of fly ash (fly ash) and 10 to 30 parts by weight of slaked lime based on 100 parts by weight of stone powder.

First, the stone powder fills the voids between the aggregates, and functions to make the density of the composition dense. The stone powder is generally used in the art and the type thereof is not particularly limited.

The fly ash (fly ash) fills the voids between the aggregates to make the composition denser, and functions to improve fluidity and workability, relieve heat of curing, and improve long-term strength and watertightness. In addition, there is an economic effect because industrial by-products can be recycled.

The fly ash (fly ash) is preferably contained in an amount of 10 to 30 parts by weight based on 100 parts by weight of the stone powder. When the content of the fly ash (fly ash) is too small, there is a problem that the above improvement effect may be insufficient, and when the content of the fly ash (fly ash) is too large, it is difficult to expect any further improvement effect and the viscosity There is a problem in that workability may be deteriorated rather than improved.

The slaked lime fills the voids between the aggregates to make the density of the composition dense, thereby improving watertightness and aging resistance.

The slaked lime is preferably contained in an amount of 10 to 30 parts by weight based on 100 parts by weight of the stone powder. When the content of the slaked lime is too small, there is a problem that the above-mentioned improvement effect may be insufficient, and when the content of the slaked lime is too large, there is a problem that it is difficult to expect any further improvement effect and, on the contrary, the strength may be lowered.

In addition, the filling material further includes 0.1 to 10 parts by weight of graphene oxide based on 100 parts by weight of stone powder, so that watertightness and strength characteristics can be further improved.

As the graphene oxide, by using a sulfur-containing graphene oxide, it is possible to further improve the above-described effect, as well as to rapidly progress gelation at a low temperature, thereby enabling rapid curing.

More specifically, the sulfur-containing graphene oxide is prepared by adding graphene oxide to distilled water at a concentration of 0.8 to 1.5 mg/ml, and then dispersing it through ultrasonic treatment (ultra sonification) to prepare a graphene oxide (GO) dispersion. to do; Prepare a solution of sodium polysulfide (Na ₂ S _x , x = 2 to 5) by mixing and dissolving 1 to 4 mol/L sulfur (S) and 1 mol/L sodium sulfide (Na ₂ S) in distilled water to do; After mixing the respectively prepared graphene oxide (GO) dispersion and sodium polysulfide (Na ₂ S _x , x = 2 to 5) solution in a volume ratio of 0.7 to 1.5: 1, ultrasonic treatment (ultra sonification) Dispersing to prepare a GO-Na ₂ S _x mixed solution; Titrating the prepared GO-Na ₂ S _x mixed solution into a 1 to 10 mol/L formic acid (HCOOH) solution to form a sulfur-containing graphene oxide composite precipitate; Filtering and washing the formed sulfur-containing graphene oxide composite precipitate, followed by drying, to prepare a sulfur-containing graphene oxide composite; and heat-treating the prepared sulfur-containing graphene oxide composite in an inert gas atmosphere and 150 to 200° C. for 18 to 36 hours to prepare sulfur-containing graphene oxide. can

The modified asphalt binder improves physical properties such as excellent initial and long-term strength, water curing stability, water resistance, chemical resistance, flow resistance, thermal stability, and prevents plastic deformation, aging and / or peeling, and implements rapid hardening, It functions to minimize the phenomenon of rapid maintenance and traffic congestion.

In consideration of the above-described improvement effect, the modified asphalt binder may be contained in an amount of 10 to 30% by weight in the modified asphalt-based eco-friendly repair material composition for emergency repair of a road using a recycled lightweight aggregate according to an embodiment of the present invention. .

More specifically, the modified asphalt binder includes 70 to 80% by weight of asphalt, 5 to 15% by weight of an acetate-containing solvent, 1 to 10% by weight of a performance modifier, 1 to 10% by weight of hydrotreated light refined oil, and 0.5 to 5% by weight of dimer acid It can be preferably used containing weight %.

First, the asphalt functions to provide a caking force for waterproofing and strengthening strength.

The asphalt is not particularly limited as long as it is asphalt commonly used in the art, but more preferably petroleum-based asphalt such as straight asphalt, cutback asphalt, and blown asphalt; At least one selected from the group consisting of natural asphalt and mixtures thereof may be used. More preferably, in consideration of ease of construction and deformation resistance, a mixture of 70 to 80% by weight of cutback asphalt and 20 to 30% by weight of natural asphalt may be used. In this case, the cutback asphalt has a penetration degree of 60 to 120, and it is more preferable to use a mixture of gasoline or kerosene with straight asphalt to improve fluidity. As an example of the cutback asphalt, rapid curing (RC) cutback asphalt or medium curing (MC) cutback asphalt may be used.

The asphalt may be contained in the modified asphalt binder in an amount of 70 to 80% by weight. When the content of the asphalt is too small, there is a problem that construction workability may be insufficient, and when the content of the asphalt is too large, there is a problem that strength and durability may be reduced.

The acetate-containing solvent contains an acetate group, and by facilitating mixing of the modified asphalt binder, it improves construction workability, and in particular, functions to greatly improve underwater adhesion, underwater hardening performance and rapid hardening.

The acetate-containing solvent is methyl acetate, ethyl acetate, normal propyl acetate, isopropyl acetate, isopropyl acetate, butyl acetate, methyl cellosolve acetate, cellosolve acetate, butyl cellosolve acetate, carbitol acetate, and mixtures thereof. One or more selected from the group consisting of may be used. More preferably, by using a mixture of normal propyl acetate and methyl cellosolve acetate in a volume ratio of 3 to 5: 1, the above-described effect can be further improved.

The acetate-containing solvent may be contained in the modified asphalt binder in an amount of 5 to 15% by weight. When the content of the acetate-containing solvent is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the acetate-containing solvent is too large, there is a problem that strength and durability may be reduced.

The performance-modifying admixture improves durability such as excellent strength performance, water curing stability, waterproofness, chemical resistance, flow resistance, thermal stability, and the like, and functions to prevent plastic deformation, aging and/or peeling.

The performance-modifying admixture may be contained in an amount of 1 to 10 wt% in the modified asphalt binder. If the content of the performance-modifying admixture is too small, the improvement effect may be insufficient, and if the content of the performance-modifying admixture is too large, price competitiveness and workability may be reduced.

More specifically, the performance-modifying admixture may preferably include 100 parts by weight of an alkyd resin, 30 to 50 parts by weight of a styrene-butadiene-styrene copolymer, and 30 to 50 parts by weight of a polyester resin.

First, the alkyd resin functions to implement excellent workability, water curing stability, waterproofness, chemical resistance, chemical resistance, and fast curing properties. In particular, it has excellent compatibility with aqueous and non-aqueous components, and can greatly improve water curing stability, waterproofness, and quick-setting properties.

The styrene-butadiene-styrene copolymer functions to improve durability such as excellent strength performance and waterproofness.

The styrene-butadiene-styrene copolymer is preferably contained in an amount of 30 to 50 parts by weight based on 100 parts by weight of the alkyd resin. When the content of the styrene-butadiene-styrene copolymer is too small, the above-described improvement effect may be insufficient, and when the content of the styrene-butadiene-styrene copolymer is too large, price competitiveness may decrease.

The polyester resin functions to improve durability performance such as excellent strength performance, chemical resistance, chemical resistance, flow resistance, and thermal stability.

The polyester resin is preferably contained in an amount of 30 to 50 parts by weight based on 100 parts by weight of the alkyd resin. When the content of the polyester resin is too small, there is a problem that the improvement effect may be insufficient, and when the content of the polyester resin is too large, there is a problem that the water curing performance may be reduced.

In addition, the performance-modifying admixture further includes 10 to 30 parts by weight of a polyphenylene ether resin with respect to 100 parts by weight of the alkyd resin, thereby improving durability performance such as excellent strength performance, flow resistance, thermal stability, and plastic deformation, aging and/or the ability to prevent peeling may be further improved.

Such polyphenylene ether resins include poly(2,6-dimethyl-1,4-phenylene) ether; poly(2,6-diethyl-1,4-phenylene) ether, poly(2,6-dipropyl-1,4-phenylene) ether; poly(2-methyl-6-ethyl-1,4-phenylene) ether, poly(2-methyl-6-propyl-1,4-phenylene) ether, poly(2-ethyl-6-propyl-1, 4-phenylene) ether, poly(2,6-diphenyl-1,4-phenylene) ether, poly(2,6-dimethyl-1,4-phenylene) ether and poly(2,3,6- Copolymer of trimethyl-1,4-phenylene) ether, poly(2,6-dimethyl-1,4-phenylene) ether and poly(2,3,6-triethyl-1,4-phenylene) ether At least one selected from the group consisting of copolymers or mixtures thereof may be used. More preferably, by using a copolymer of poly(2,6-dimethyl-1,4-phenylene) ether and poly(2,3,6-trimethyl-1,4-phenylene) ether, the above-described improvement effect is used. can be further improved.

The hydrotreated light refined oil functions to improve workability, adhesion, elasticity and water resistance.

The hydrotreated light refined oil may be contained in the range of 1 to 10 wt% in the modified asphalt binder. When the content of the hydrotreated light refined oil is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the hydrotreated light refined oil is too large, there is a problem that strength performance may be reduced.

The dimer acid has excellent coating properties, adhesion properties, heat resistance, corrosion resistance, durability, chemical resistance, and thixotropy, and thus can effectively prevent peeling.

The dimer acid is generally used in the art and the type thereof is not particularly limited, but is preferably a dimer of a plant fatty acid. In this case, the plant fatty acid is linoleic acid, stearic acid, palmitic acid, and mixtures thereof. At least one selected from the group may be used.

The dimer acid may be contained in the range of 0.5 to 5 wt% in the modified asphalt binder. When the content of the dimer acid is too small, there is a problem that the above improvement effect may be insufficient. There is this.

On the other hand, another embodiment of the present invention is a method of manufacturing a modified asphalt-based eco-friendly repair material composition for emergency repair of a road using the cyclic lightweight aggregate;

mixing an acetate-containing solvent, a performance modifier, hydrotreated light refined oil, and dimer acid at a temperature of 40 to 50° C. to prepare a reformed mixture; After stirring and melting the asphalt at a temperature of 120 to 200 ℃, lowering the molten asphalt to a temperature of 80 to 90 ℃, mixing with the prepared modified mixture, preparing a modified asphalt binder; Dry-mixing the filler material with the aggregate containing the low ash lightweight aggregate and artificial lightweight aggregate; After maintaining the prepared modified asphalt binder at a temperature of 40 to 50 ° C., the dry mixed low ash lightweight aggregate and the aggregate containing the artificial lightweight aggregate and the filler are mixed, and the modified asphalt system for emergency repair of the road using the circulating lightweight aggregate Preparing an eco-friendly repair material composition; and packaging the modified asphalt-based eco-friendly repair material composition for emergency repair of a road using the manufactured circulating lightweight aggregate in an airtight pavement material. A manufacturing method is provided.

At this time, since the modified mixture has excellent curing stability in water, it is possible to implement durability such as excellent strength performance and waterproofness, and the results of the underwater curing stability test of the modified mixture are shown in FIG.

As can be seen in FIG. 3 , it was confirmed that the modified mixture was stably gelled in water and then completely cured and separated from water.

In addition, by lowering the molten asphalt to a temperature of 80 to 90 ℃, and mixing with the prepared modified mixture, there is an effect that can prevent solvent and material separation. In addition, the mixing of the molten asphalt and the modified mixture may be performed while stirring at a stirring speed of 120 to 300 rpm.

In addition, the emergency repair method of the road using the modified asphalt-based eco-friendly repair material composition for emergency repair of the road using the circulating lightweight aggregate of the present invention removes the deteriorated part, the damaged part or the contaminated part of the construction site, and cleans the removed part ; pouring a modified asphalt-based eco-friendly repair material composition for emergency repair of a road using the circulating lightweight aggregate of the present invention on the cleaned portion; And it may be carried out by a method comprising a compaction step.

A schematic flowchart and construction image of such an emergency repair method of the road is shown in FIG. 4 .

Accordingly, according to the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using circulating lightweight aggregate according to an embodiment of the present invention and a method for manufacturing the same, it is bagged in an airtight pavement material, transporting and storing is easy, and separate mixing There is an effect that the operator can easily measure the amount used on site without any equipment, so that it can be easily installed on the surface to be repaired, such as a pothole. In addition, as a recycled lightweight aggregate, including bottom ash lightweight aggregate and artificial lightweight aggregate from recycled bottom ash (bottom ash), which is a waste resource, it is eco-friendly and cost-saving, as well as dramatically lowering the burden on the transport and work of workers. There is an effect that can be given.

In addition, it satisfies physical properties such as excellent initial and long-term strength, water curing stability, waterproofness, chemical resistance, flow resistance, and thermal stability, and has an effect of preventing plastic deformation, aging and/or peeling. In addition, since it has a quick-hardening property and can be repaired quickly, there is an effect that can minimize the traffic congestion caused by the shortening of the repair time.

As mentioned above, although preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical spirit of the present invention. This is possible.

<Production Example 1>

Manufacture of lightweight artificial aggregates

After pulverizing bottom ash (bottom ash) and dredged soil to an average particle diameter of 10 mm or less, respectively, using a separate grinder; 100 parts by weight of bottom ash (bottom ash) and 50 parts by weight of dredged soil that had undergone the grinding step were transferred to a mixing hopper and mixed. After that, the mixed raw materials in the mixing hopper are transferred to a mixing grinder, and mixed and crushed to an average particle diameter of 100 μm or less; The mixed and pulverized blending raw materials were mixed in a molding mixer, and the blended raw materials were molded into a sphere in a regular ring machine. Thereafter, the artificial lightweight aggregate was prepared by calcining the molded body that had undergone the forming step at a temperature of 1100° C. in a calcination furnace.

At this time, the dredged soil is sprayed and mixed with 4.8 parts by weight of a microorganism culture solution (Saccharomyces cerevisiae) at a concentration of 2.2×10 ¹⁰ cfu/g with respect to 100 parts by weight of the dredged soil before the pulverization step, followed by mixing at 40 ° C. The one prepared by aging at the temperature for 36 hours was used.

As a result of measuring the artificial lightweight aggregate according to Preparation Example 1 according to KS F 2534, it was confirmed that it had a density of 1.38 g/cm ³ , a unit volume mass of 750 Kg/m ³ and a water absorption of 12.32%.

<Preparation Example 2>

Manufacture of artificial lightweight aggregate containing hydrophobic magnetite on the surface

After spraying the composition for surface treatment on the artificial lightweight aggregate prepared in Preparation Example 1, heat treatment was performed in an inert atmosphere and a temperature of 380 ° C., thereby preparing an artificial lightweight aggregate containing hydrophobic magnetite on the surface. In this case, the composition for surface treatment was used based on 100 parts by weight of the octadecane solvent, FeO(OH) containing 5.7 parts by weight, oleic acid 3 parts by weight, and arachidylamine 0.3 parts by weight.

As a result of measuring the artificial lightweight aggregate according to Preparation Example 2 according to KS F 2534, it was confirmed that it had a density of 1.41 g/cm ³ , a unit volume mass of 795 Kg/m ³ and a water absorption of 10.28%.

<Production Example 3>

Manufacture of artificial lightweight aggregate containing hydrophobic magnetite on the surface

An artificial lightweight aggregate was prepared in the same manner as in Preparation Example 2, but the composition for surface treatment was 5.7 parts by weight of FeO(OH), 2 parts by weight of oleic acid, 0.5 parts by weight of arachidylamine, based on 100 parts by weight of the octadecane solvent, and One containing 1.5 parts by weight of the sponge powder was used.

In this case, the sponge powder was prepared in the following way was used. After the sponge (hexactinellid sponge, Venus Flower Basket) was pulverized to have an average particle diameter of 75 μm to prepare a sponge powder; After reacting the pulverized sponge powder in an aqueous hydrochloric acid solution with a concentration of 25% by weight 20 times by weight; After filtering through a 250 mesh filter, it was added to 5 times the weight of water and stirred. Thereafter, the sponge powder was added to oleyl alcohol, which is a hydrophobic solvent by three times the weight, and stirred, and then dried at a temperature of 80° C. to prepare a sponge powder having a needle-like structure.

As a result of measuring the artificial lightweight aggregate according to Preparation Example 1 according to KS F 2534, it was confirmed that it had a density of 1.40 g/cm ³ , a unit volume mass of 770 Kg/m ³ and a water absorption of 8.72%.

<Production Example 4>

Preparation of sulfur-containing graphene oxide

After adding the graphene oxide powder to distilled water at a concentration of 1.2 mg/ml, it was dispersed through ultrasonic treatment (ultra sonification) to prepare a graphene oxide (GO) dispersion.

Separately, by mixing and dissolving 2.5 mol/L sulfur (S) and 1 mol/L sodium sulfide (Na ₂ S) in distilled water, a sodium polysulfide (Na ₂ S _3.5 ) solution was prepared.

After mixing the prepared graphene oxide (GO) dispersion and sodium polysulfide solution in a volume ratio of 1.5: 1, and then dispersing through ultrasonic treatment (ultra sonification) to prepare a GO-Na ₂ S _x mixed solution; The prepared GO-Na ₂ S _x mixed solution was titrated into a 3 mol/L formic acid (HCOOH) solution to form a sulfur-containing graphene oxide composite precipitate. The formed sulfur-containing graphene oxide composite precipitate was filtered, washed several times with acetone and distilled water, and then dried at 55 ° C., thereby preparing a sulfur-containing graphene oxide composite.

By heat-treating the prepared sulfur-containing graphene oxide composite in an Ar gas atmosphere and 165 ° C. for 20 hours, sulfur-containing graphene oxide was prepared.

<Examples and Comparative Examples>

According to the blending ratio according to Table 1 below, an acetate-containing solvent, a performance modifier, hydrotreated light refined oil, and dimer acid were mixed at a temperature of 45° C. to prepare a reformed mixture. Then, after stirring and melting the asphalt at a temperature of 150 ° C., the molten asphalt was lowered to a temperature of 85 ° C., mixed with the separately prepared modified mixture and stirred at a speed of 250 rpm, to prepare a modified asphalt binder.

On the other hand, according to the mixing ratio according to Table 1, the aggregate and the filler containing the low ash lightweight aggregate and the artificial lightweight aggregate were dry-mixed.

After maintaining the prepared modified asphalt binder at a temperature of 40 ° C., by mixing the filler and aggregate containing the dry mixed low ash lightweight aggregate and artificial lightweight aggregate, modified asphalt-based eco-friendly repair material for emergency repair of roads using circulating lightweight aggregate Compositions and comparative compositions were prepared.

Category (wt%) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 aggregate 85 85 85 85 85 (weight%) Low ash lightweight aggregate ¹⁾
(Particle size: 5 to 10 mm) 70 10 40 20 - artificial lightweight aggregate
(Particle size: 5 to 10 mm) 10
[Production Example 1] 70
[Production Example 2] 40
[Production Example 3] - - limestone aggregate
(Particle size: 5 to 10 mm) - - - 55 70 stone powder
(Particle size: 4mm or less) 20 20 20 25 30 ¹⁾ Lightweight bottom ash aggregate: use a density of 1.91 g/cm ³ , a unit volume mass of 691 Kg/m ³ and a water absorption of 4.03%. fill material 5 5 5 5 5 (parts by weight) stone powder
(Particle size: 0.075mm or less) 100 100 100 100 100 fly ash 25 25 25 25 25 slaked lime 25 25 25 25 25 graphene oxide - 5
[normal
graphene
oxide] 5
[Production Example 4] - - Modified Asphalt Binder 10 10 10 10 10 (weight%) Asphalt AP-5
(Intrusion: 70) 73 73 73 73 73 Acetate containing solvent
[Normal propyl acetate] 11 2 9 - - Acetate containing solvent
[Methyl Cellosolve Acetate] - 9 2 - - Hydrotreated Light Refined Oil 7 7 7 25 23 dimer acid 2 2 2 2 2 performance modification admixture
(parts by weight) 7 7 7 - 2 ▶ Alkyd resin 100 100 100 - - ▶ Styrene Butadiene Styrene Copolymer 35 35 35 - 100 ▶ Polyester resin 35 35 35 - - ▶ Poly(2,6-dimethyl
-1,4-phenylene) ether - 20 - - - ▶ Poly(2,6-dimethyl
-1,4-phenylene) ether and
poly(2,3,6-trimethyl
-1,4-phenylene) ether
copolymer - - 20 - -

Hereinafter, in order to more easily grasp the characteristics of the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using the recycled lightweight aggregate prepared according to Examples 1 to 3, the Examples and Comparative Examples 1 and The experimental results comparing the characteristics of 2 are shown.

<Test Example 1>

Using the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using the recycled lightweight aggregate prepared in Examples 1 to 3 and the composition for comparison prepared in Comparative Examples 1 and 2, as shown in FIG. 1, the diameter The test body of x height 101 mm x 63.5 mm was manufactured. More specifically, a Marshall test was performed in accordance with KS F 2369 to determine strength, durability, and water resistance, and the results are shown in Table 2 below. In this case, the stability (N) represents strength or durability, and the water immersion residual stability (%) represents water resistance or peeling resistance.

In addition, in order to evaluate the lightness of the composition, the mass of the test body prepared in the same volume was measured and shown in Table 2 below. In addition, as a result of the lightness evaluation, when the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using the recycled lightweight aggregate prepared in Example 1 and the comparative composition prepared in Comparative Example 2 were applied to the road surface with the same thickness , an image evaluating the difference in construction area according to the mass of the composition is shown in FIG. 2 .

In addition, in order to evaluate the rapid curing, the curing time was measured and the results are shown in Table 2 below.

Item KS F 2369
Quality standards Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Stability (25℃, N) 2500 or more 5240 5424 5505 2640 3020 Flow value (1/10mm) 20-40 35 38 39 23 29 Porosity (%) 3-15 8.9 8.2 7.8 15 7.0 Water immersion residual stability (%) 75 102 111 118 76 83 Lightness (g) - 867 872 861 1090 1150

As can be seen in Table 2 and FIG. 2, the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using the circulating lightweight aggregate prepared in Examples 1 to 3 is the composition for comparison prepared in Comparative Examples 1 and 2 and In comparison, it can be seen that stability, flow value, porosity (%), water immersion residual stability, and lightness are significantly improved.

<Test Example 2>

Using the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using the recycled lightweight aggregate prepared in Example 1 and the composition for comparison prepared in Comparative Example 1, water curing stability (stability according to KS F 2369 (25 ° C.) , N) evaluation), and the results are shown in Table 3 below.

sample number Exam conditions Example 1 Comparative Example 1 One Specimen production (50 times compaction) → Immediately after demolding 4980 2030 2 KSF 2369 Stability Test 5245 3260 3 Specimen production → 2h water immersion → Immediately after demolding 5480 1965 4 Specimen production→2h water immersion→Demolding 16h leave→25℃ 2h curing 5075 2865 5 Specimen production → 2h water immersion → demolding → 19h leave → 25℃ 2h curing 5595 2987 6 Specimen production → demolding → 2h water immersion 5835 1654 7 Specimen production → demolding → 19h water immersion 5185 2271 8 Specimen production → demolding → 48h water immersion 5005 2103 9 Specimen production → demolding → 2h water immersion → 16h leave → 25℃ 2h curing 4915 2668 10 Specimen production → demolding → 2h water immersion → 19h leave → 25℃ 2h curing 5085 2717

As can be seen in Table 3, the modified asphalt-based eco-friendly repair material composition for emergency repair of roads using the circulating lightweight aggregate prepared in Example 1 was compared with the comparative composition prepared in Comparative Example 1, and various various underwater curing methods were used. It can be seen that the stability is significantly improved under the conditions.

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

Claims (6)

A recycled lightweight aggregate comprising: 65 to 85% by weight of aggregate including bottom ash lightweight aggregate and artificial lightweight aggregate, 0.1 to 5% by weight of filler, and 10 to 30% by weight of modified asphalt binder;
The modified asphalt binder includes 70 to 80% by weight of asphalt, 5 to 15% by weight of an acetate-containing solvent, 1 to 10% by weight of a performance modifier, 1 to 10% by weight of hydrotreated light refined oil, and 0.5 to 5% by weight of dimer acid to do;
The performance modifying admixture includes 100 parts by weight of an alkyd resin, 30 to 50 parts by weight of a styrene-butadiene-styrene copolymer, and 30 to 50 parts by weight of a polyester resin;
The filler includes 10 to 30 parts by weight of fly ash (fly ash) and 10 to 30 parts by weight of slaked lime based on 100 parts by weight of stone powder,
The performance-modifying admixture further comprises 10 to 30 parts by weight of a polyphenylene ether resin based on 100 parts by weight of the alkyd resin;
wherein the polyphenylene ether resin is a copolymer of poly(2,6-dimethyl-1,4-phenylene) ether and poly(2,3,6-trimethyl-1,4-phenylene) ether. A modified asphalt-based eco-friendly repair material composition for emergency repair of roads using lightweight aggregate.
According to claim 1,
The artificial lightweight aggregate contains hydrophobic magnetite on its surface;
The artificial lightweight aggregate containing hydrophobic magnetite on the surface is prepared by spraying a composition for surface treatment on the artificial lightweight aggregate and then heat-treating it in an inert atmosphere and at a temperature of 250 to 400 °C;
The composition for surface treatment comprises 0.1 to 10 parts by weight of FeO(OH), 0.1 to 10 parts by weight of oleic acid, and 0.01 to 5 parts by weight of arachidylamine, based on 100 parts by weight of the octadecane solvent. A modified asphalt-based eco-friendly repair material composition for emergency repair of used roads.
3. The method of claim 2,
The composition for surface treatment further comprises 0.01 to 5 parts by weight of sponge powder;
The sponge powder is a sponge powder having a needle-like structure;
A pulverizing step of pulverizing the spongy powder having the needle-like structure to produce a spongy powder; A reaction step of reacting the sponge powder by adding it to an aqueous hydrochloric acid solution having a concentration of 20 to 50% by weight of 10 to 20 times by weight; A first stirring step of filtering the sponge powder after the reaction step with a filter of 200 to 300 mesh, and then adding the sponge powder after filtering through the filter into water 5 to 10 times by weight and stirring; a second stirring step of adding the sponge powder after the first stirring step to oleyl alcohol and stirring; and a drying step of drying the sponge powder after the second stirring step at a temperature of 60 to 100° C. to produce a sponge powder having a needle-like structure. A modified asphalt-based eco-friendly repair material composition for emergency repair.
delete According to claim 1,
The filling material will further include 0.1 to 10 parts by weight of graphene oxide based on 100 parts by weight of stone powder;
The graphene oxide is sulfur-containing graphene oxide;
The sulfur-containing graphene oxide is prepared by adding graphene oxide to distilled water at a concentration of 0.8 to 1.5 mg/ml, and then dispersing it through ultrasonic treatment (ultra sonification) to prepare a graphene oxide (GO) dispersion; Prepare a solution of sodium polysulfide (Na ₂ S _x , x = 2 to 5) by mixing and dissolving 1 to 4 mol/L sulfur (S) and 1 mol/L sodium sulfide (Na ₂ S) in distilled water to do; After mixing the respectively prepared graphene oxide (GO) dispersion and sodium polysulfide (Na ₂ S _x , x = 2 to 5) solution in a volume ratio of 0.7 to 1.5: 1, ultrasonic treatment (ultra sonification) Dispersing to prepare a GO-Na ₂ S _x mixed solution; Titrating the prepared GO-Na ₂ S _x mixed solution into a 1 to 10 mol/L formic acid (HCOOH) solution to form a sulfur-containing graphene oxide composite precipitate; Filtering and washing the formed sulfur-containing graphene oxide composite precipitate, followed by drying, to prepare a sulfur-containing graphene oxide composite; and heat-treating the prepared sulfur-containing graphene oxide composite in an inert gas atmosphere and 150 to 200° C. for 18 to 36 hours to prepare sulfur-containing graphene oxide. Cycle characterized in that it is prepared by a manufacturing method comprising: A modified asphalt-based eco-friendly repair material composition for emergency repair of roads using lightweight aggregate.
A method of manufacturing a modified asphalt-based eco-friendly repair material composition for emergency repair of a road using the recycled lightweight aggregate according to any one of claims 1 to 3 and 5;
mixing an acetate-containing solvent, a performance modifier, hydrotreated light refined oil, and dimer acid at a temperature of 40 to 50° C. to prepare a reformed mixture;
After stirring and melting the asphalt at a temperature of 120 to 200 ℃, lowering the molten asphalt to a temperature of 80 to 90 ℃, mixing with the prepared modified mixture, preparing a modified asphalt binder;
Dry-mixing the filler material with the aggregate containing the low ash lightweight aggregate and artificial lightweight aggregate;
After maintaining the prepared modified asphalt binder at a temperature of 40 to 50 ° C., the dry mixed low ash lightweight aggregate and the aggregate containing the artificial lightweight aggregate and the filler are mixed, and the modified asphalt system for emergency repair of the road using the circulating lightweight aggregate Preparing an eco-friendly repair material composition; and
Modified asphalt-based eco-friendly repair material composition for emergency repair of roads using recycled lightweight aggregate, characterized in that it comprises the step of bagging the modified asphalt-based eco-friendly repair material composition for emergency repair of a road using the produced circulating lightweight aggregate in an airtight pavement material manufacturing method.

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