KR100674436B1 - Manufacturing method of color modified asphalt - Google Patents

Abstract

A method for manufacturing color modified asphalt is provided to display definite color by coating oil paint on asphalt, and to improve durability and reduce friction noise by chemically bonding aggregate and asphalt with additive. Large color aggregate of 50 to 80 wt%, small color aggregate of 15 to 40 wt% and filler of 5 to 10 wt% are mixed, and a transparent petroleum resin colorless binder of 5 to 30 wt% or asphalt pitch selected among color natural asphalt, petroleum asphalt or tar is mixed with the compound in a mixer. Asphalt modifying additive of 1 to 10 wt% selected among ethylene copolymer or styrene copolymer, ethylene methacrylic acid copolymer ionomer of 0.5 to 2 wt% including sodium or zinc, siloxane oligomer of 0.1 to 2 wt% at number average molecular weight of 200 to 15000 and silane compound of 0.1 to 2 wt% at number of average molecular weight of 2000 to 15000 are mixed. The mixture is arranged on the asphalt construction surface, compacted and cured. Color aggregate is exposed by removing black asphalt with using blast of air or water, and separation is prevented by chemically assembling asphalt with the surface of aggregate with the asphalt modifying specific additive.

Description

Manufacturing Method of Color Modified Asphalt

The present invention relates to an asphalt mixture prepared by mixing colored or colored aggregate and colored asphalt or petroleum resin-based colorless binder such as black and black brown, filler, and filler for asphalt modification. The color is expressed by colored or colored aggregate or used for ascon Colors are expressed by coating an oil paint, and the present invention relates to a colored modified asphalt mixture and a method for producing the same, wherein the adhesion between aggregate and asphalt is enhanced by additives for asphalt modification.

Ascon is generally abbreviated asphalt concrete and is named as asphalt, asphalt mixture, asphalt concrete, mixture for hot mix and heated bitumen paving (KS F 2349 standard), HMA (hot mix asphalt), etc. . Asphalt concrete mixture (hereinafter referred to as "ascon"), which is a mixture prepared for the construction of asphalt, is used for asphalt pitch, coarse aggregates (crushed aggregates) such as crushed stone and crushed gravel, fine aggregates (sand aggregates) such as sand, stone powder, or paving. Filler materials such as fillers and stone powders are heated or mixed at room temperature and classified into various types according to the purpose of use, use, function, and construction method.

The asphalt pitch is a final residue remaining after the hard oil is removed from the constituents of petroleum. The asphalt pitch is a black or dark brown solid or semi-solid solid composed of thousands or more kinds of high molecular hydrocarbons including organic mixtures and trace inorganic compounds. Thermoplastic material.

Conventional ascon is composed of asphalt pitch, coarse aggregates such as gravel, fine aggregates such as sand, and fillers such as stone powder mixed in a constant ratio, and black asphalt pitch is used when black is desired, and a separate pigment is used when expressing color. Used by mixing with pitch. At this time, asphalt serves as a binder for combining the aggregate and the pigment, the aggregate provides strength and wear resistance of the mixture, and the pigment is used to express various colors.

However, when the asphalt is used as described above, it is difficult to express the color of the pigment used to express the color due to the black or dark brown asphalt, and the color change over time or the asphalt containing the pigment comes off. There is a limit in color expression and development to replace it has been required.

Therefore, in order to replace this, the development of colored aggregates or colored aggregates has been made. The colored aggregates mean that the aggregates have a unique color, and the colored aggregates represent durability of aggregates that have been crushed into natural, artificial or sintered stone. Coated with a ceramic having excellent chemical resistance, weather resistance and heat resistance, it is used for construction structures or civil engineering. Such colored or colored aggregates are required to be environmentally friendly with excellent water resistance, alkali resistance, heat resistance, wear resistance and gloss.

However, since the colored aggregates are generally expensive and limited in quantity, they have economic problems to be applied to general colored road pavement. Also, when the colored aggregates are used, wear of the aggregates occurs due to automobile wheels. Then, discoloration or discoloration progressed, and it was difficult to maintain the original color.

The present invention can be used to make the construction surface has a color when paving asphalt using colored or colored aggregates, and an object of the present invention is to provide a colored asphalt that can express a color even when the color of the asphalt is black or black brown.

In another aspect, the present invention to prevent the detachment of the coloring or coloring aggregates by modifying the asphalt to improve the adhesion between the coloring or coloring aggregates and asphalt, there is no plastic deformation, there is provided a colored modified ascon without color change such as discoloration or discoloration. It is for that purpose.

It is also an object of the present invention to provide a method for producing a modified asphalt mixture having a color by adding black or inorganic pigments using colored or colored aggregate, and paving the road.

In addition, the present invention, by adding a general black or inorganic pigment to the modified asphalt mixture having a color on the road after coating the color oil paint for asphalt concrete on the surface of the road to reduce the cost without using coloring or coloring aggregates and color It is an object of the present invention to provide colored modified asphalt that is excellent in appearance and has a durability and noise reduction effect of the road.

The present invention relates to colored asphalt using colored or colored aggregates, and an aspect of the present invention is a colored asphalt, such as black or black brown, asphalt pitch, or a petroleum resin-based colorless modified binder and the colored or colored aggregates are installed on the road surface Then, when black asphalt is used, the color of the colored or colored aggregate is reflected by peeling the black or black brown asphalt from the surface of the upper surface using air or water blast to expose the color of the colored or colored aggregate to the outside. The present invention relates to a colored modified asphalt mixture and a method for producing the same, which have a color feeling and prevent the detachment of aggregate by chemically bonding the surface of the aggregate with asphalt using a special additive for asphalt modification.

In another aspect of the present invention, after paving the road with black modified asphalt mixed with the general aggregate, the surface is coated with an oil paint for ascon to express color, thereby reducing the construction cost and producing various colors. To provide. At this time, the modified asphalt may be black or black brown asphalt or asphalt having a color by adding an inorganic pigment.

The colored or colored aggregate according to the present invention refers to coarse aggregates and fine aggregates, and generally refers to aggregates used in asphalt pavement, and aggregates used in the present invention are colored aggregates having an intrinsic color or inorganic pigments. It is the coloring aggregate colored using etc. At this time, the coloring or colored aggregate is used that is commonly used, the color can be used in various ways according to the application.

In addition, the coating material for ascon coating on the modified ascon using the general aggregate for color expression is composed of one- or two-component oil paints and solvents composed of acrylic and urethane resins, and inorganic pigments.

In addition, the present invention, when the asphalt pavement using the conventional coloring or coloring aggregate, the road is worn and the aggregate is weakened by the adhesive strength with the asphalt may be detached or plastic deformation occurs, the results of the study to improve this additive for asphalt modification As a result of adding any one or more additives selected from ethylene copolymer or styrene copolymer in a specific molecular weight range, there is no detachment of aggregate, durability of pavement surface is increased, and friction noise decreases while driving. The present invention was completed.

Therefore, the present invention is characterized by expressing various colors by using coloring or coloring aggregate or using oil paint for ascon as a surface coating material, and also using a special modifier for asphalt modification to prevent detachment of aggregate and road surface. The present invention is characterized in providing a colored modified asphalt capable of excellent mechanical properties.

The following briefly summarizes the types and materials of ascone to help understanding of the present invention.

Asphalt is a black or dark brown solid or semi-solid thermoplastic composed of thousands of high molecular hydrocarbons (CHs) containing organic mixtures and trace inorganic compounds.Asphalt Cement Europe is commonly referred to as Bitumen. Its types include natural asphalt, such as lake asphalt, lock asphalt, sand asphalt, gilsonite asphalt, grahamite asphalt, gland pitch asphalt, straight asphalt (KS M 2201), asphalt cement (road paving asphalt). Petroleum asphalt and tar, such as cutback asphalt (KS M 2202), emulsified asphalt (KS M 2203), blown asphalt, modified asphalt, etc., which are mainly obtained from coal drying process. It is characterized by its peculiar smell and it is a black liquid. It is determined by Korean Industrial Standard KS M 2206 packaging tar.

Next, the aggregate uses coarse aggregate and fine aggregate, and the coarse aggregate for ascon must be hard, strong, durable, free of deposits and contain no clay, silt or other harmful substances. Should be Fine aggregate for ascon refers to crushed sand or mixtures thereof obtained by breaking natural sand, rocks, gravel, etc., and shall comply with KS F 2357 standard.

The filling material then uses limestone powder, portland cement, slaked lime, fly ash, recovered dust, furnace steelmaking dust, foundry dust, various incineration ashes and other suitable powders of mineral material. When used, it should be free of harmful substances such as dust, mud, organic matter and agglomerated particulates, and the quality should be in accordance with KS F 3501.

In general, the conventional color asphalt, by adding the pigment of the color to be expressed in the asphalt, aggregate, filler and the like selected from the above-mentioned materials of each group in the mixer at the same time, according to the characteristics of the asphalt material as a whole by the normal temperature mixing or heat mixing Color ascone having a single color has been produced and used in the construction of colored asphalt, or color or colored aggregate and binder material asphalt has been modified to colorless or translucent to express color.

However, the present invention provides a colored modified asphalt mixture that can be colored even by using black or dark brown asphalt by using colored or colored aggregate, or by using an oil paint coating material. At this time, the modified asphalt may be black or black brown asphalt or asphalt having a color by adding an inorganic pigment.

Hereinafter, the mixture for providing the colored modified asphalt of the present invention and a method for preparing the same will be described in detail.

The present invention mixes 50 to 80% by weight of colored or colored coarse aggregate, 15 to 40% by weight of colored or colored fine aggregate, and 5 to 10% by weight of filler to be 100 parts by weight, and is colored as a binder for the mixture. 5 to 30 parts by weight of any one asphalt pitch or transparent petroleum resin-based colorless binder selected from natural asphalt, petroleum asphalt, tar, and any one or more additives for asphalt modification selected from ethylene copolymer or styrene copolymer. Disclosed is a colored modified asphalt mixture, which is prepared by mixing 10 parts by weight.

The quality and specification of the aggregate used in the present invention is used to meet the KS F 2357 standard. At this time, the aggregate is a colored aggregate having a unique color of the aggregate itself or a colored aggregate colored by a commonly used inorganic pigment.

In the present invention, 50 to 80% by weight of colored or colored coarse aggregate is used as the aggregate, and 15 to 40% by weight of colored fine aggregate is used. The reason for using the coarse aggregate is relatively high. To do this. The above range is apparent in that the present inventors use the color in the best range by experiment, and can be used by the user according to the physical properties and climate of the road.

In the present invention, the filling material may be a filling material, which is usually added to the asphalt, such as stone powder, and the like may be used in the case of displaying the color by coloring similarly to the aggregate, but is not limited thereto. The content of the aggregate is preferably adjusted to be used so that the sum with the aggregate is 100 parts by weight.

The asphalt pitch is a final residue remaining after the hard oil is removed from the constituents of petroleum. The asphalt pitch is a black or dark brown solid or semi-solid solid composed of thousands or more kinds of high molecular hydrocarbons including organic mixtures and trace inorganic compounds. Thermoplastic material. In the present invention, it is also possible to use a petroleum resin-based colorless binder, which is quite expensive, and thus there is a limit to use it, and mainly black or black brown asphalt pitch is used. The amount used is 5 to 30 parts by weight so that the sum of aggregate and filler is 100. Since the asphalt pitch is used to give the adhesion between aggregates, it is not necessary to use a large amount, and if it exceeds the above range, it is not preferable because the stickiness of the road surface becomes stronger after paving the asphalt.

In addition, the additive for modifying the asphalt is used to prevent the desorption of aggregates by chemically bonding the surface of the colored aggregate and asphalt, and the number average molecular weight of 1,500 ~ 90,000 ethylene vinyl acetate (EVA), ethylene ethyl acrylate (EEA), any one of styrene selected from ethylene methyl acrylate (EMA) or styrene selected from styrene-butadiene-styrene copolymer (SBS), styrene-butadiene-rubber copolymer (SBR) System copolymers are used. The styrene-butadiene-styrene copolymer preferably has a styrene content of 15 to 50 mol%, more preferably 20 to 40 mol%. The block copolymer may be linear or branched, and the number average molecular weight of the block copolymer may be used in a range of 2,000 to 9,00,000, preferably 15,000 to 300,000. The copolymer is a thermoplastic rubber provided in the form of pellets, flakes, powder, the product form is preferred because the powder form has a shorter dissolution time than the plaque.

Or aromatic petroleum resin, coumarone indene resin, aliphatic petroleum resin, phenol resin, rosin, hydrogenated rosin, modified rosin, coumarone-indene resin, shellac, copal, fatty acid, polyamide resin And it is also possible to further use one or more selected from the group consisting of polyester resins. As the content, the sum of aggregate and filler is 100 to use 1 to 10 parts by weight. If it exceeds the above range, since the viscosity of the mixture rises, processing tends to be difficult, and when used at less than 1 part by weight, the effect is insignificant, which is not preferable.

In addition, in the present invention, in order to achieve chemical bonding between the colored aggregate and asphalt, an ionomer having a metal salt of sodium or zinc in a copolymer of ethylene and methacrylic acid, based on 100 parts by weight of the aggregate and the filler, 0.5 to 2 weight Further parts may be added and used. In addition, 0.1 to 2 parts by weight of a siloxane oligomer having a number average molecular weight of 200 to 15,000 or a silane compound having a number average molecular weight of 2,000 to 15,000 may be used as a fluidizing agent.

The ionomer has a basic structure in which the molecular chain is bridged by metal ions in part of the carboxyl groups of the olefin copolymer obtained by copolymerizing olefins such as ethylene and propylene with acrylic acid, methacrylic acid, maleic acid and itaconic acid. In addition, the ionomer includes those produced by copolymerization with other comonomers. Examples of the metal ion include 1 to trivalent ions such as sodium, potassium, silver, copper, calcium, barium, zinc, iron, magnesium, and the like, and in particular, the use of ionomers having a metal salt of sodium or zinc is a mechanical property. This is excellent. The ionomer is particularly preferably a copolymer of ethylene and a metal salt of methacrylic acid.

Moreover, the said siloxane oligomer of the number average molecular weights 200-15,000 is tetraalkoxysilane, such as tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, tetrabutoxysilane; Methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, butyltrimethoxysilane, butyltriethoxysilane, pentyl Limethoxysilane, pentyltriethoxysilane, heptyltrimethoxysilane, heptyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, hexadecyl Trimethoxysilane, hexadecyltriethoxysilane, octadecyltrimethoxysilane, octadecyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane , γ-methacrylox Trialkoxysilane, such as the pill-triethoxysilane; Any one or more alkoxysilanes selected from dialkoxysilanes such as dimethyldimethoxysilane and dimethyldiethoxysilane are reacted for several hours at room temperature in the presence of an acid catalyst selected from alcohol solvents selected from ethanol or methanol, water, hydrochloric acid or nitric acid. And those obtained by partial polymerization after hydrolysis, or those commercially available may be used. Its content is preferably 0.1 to 2 parts by weight so that the sum of aggregate and filler is 100, and when used in the above range, the storage stability of the mixture is increased, and the fluidity of the mixture is improved, thereby providing excellent coating performance when pouring. Indicates.

As the silane compound having a number average molecular weight of 2,000 to 15,000, the sum of the aggregate and the filler is filled with a perfluoroalkylalkoxysilane represented by the following general formula (1) or a tetraalkoxysilane represented by the general formula (2). 0.1 to 2 parts by weight is used. When used in the above range, the storage stability of the mixture is increased, and the flowability of the mixture is improved, thereby showing excellent coating performance when pouring.

[General Formula (1)]

CF ₃ (CF ₂ ) nCH ₂ CH ₂ Si (OR ₂ ) ₃

(R ₂ represents an alkyl group having 1 to 5 carbon atoms, n represents an integer of 0 to 12.)

[General Formula (2)]

Si (OR ₁ ) ₄

(R ₁ represents an alkyl group having 1 to 5 carbon atoms)

Examples of the perfluoroalkylalkoxysilane include trifluoropropyltrimethoxysilane, trifluoropropyltriethoxysilane, tridecafluorooctyltrimethoxysilane, tridecafluorooctyltriethoxysilane, Heptadecafluorodecyl trimethoxysilane, a heptadecafluoro decyl triethoxysilane, etc. are mentioned. Among these, the compound whose said n is 2-6 is preferable. As said tetraalkoxy silane, tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, tetrabutoxysilane, etc. are mentioned, Among these, tetramethoxysilane, tetraethoxysilane, etc. are preferable.

In the present invention, additives such as thickeners, film-forming agents, leveling agents, plasticizers, cryoprotectants, pH adjusters, preservatives, anti-fog agents, antibacterial agents, dispersants, antifoaming agents, sunscreen agents, antioxidants, and the like may be further used. The content of is not limited because it is preferable to have appropriate physical properties according to the experiment.

The following describes a method for producing the colored modified asphalt mixture of the present invention.

In one aspect of the present invention,

1) Add colored or colored aggregate and colored asphalt pitch or petroleum resin colorless binder into the mixer and mix.

2) Mix and fill the filler and the additive for asphalt modification.

3) Curing after laying and compacting on the asphalt construction surface.

At this time, the content and components are the same as above, and the mixing method is the same as the method used in the known asphalt pavement. In addition, the colored asphalt pitch means an asphalt pitch having a color such as black or black brown.

In the present invention, it is also possible to further add an inorganic pigment in the step 2), and when the inorganic pigment is added, the color expression is excellent, and any inorganic pigment that is commonly used can be used without limitation. The amount of the inorganic pigment may be adjusted and used as necessary, but is not limited. However, the inorganic pigment is preferably not used or used within the range of 0.1 to 5 parts by weight based on the total mixture.

In the present invention, when packaging on the construction surface as described above, the color of the colored or colored aggregate may not be well represented by the color of the black asphalt, after the step 3) using the air or water blast black of the surface or It is also possible to further include the step of peeling the black brown asphalt.

In addition, it is also possible to further include the step of coating the oil paint on the asphalt surface after the step 3). As described above, the oil paint may be used as a one- or two-component oil paint and a solvent, and an inorganic pigment composed of acrylic and urethane resin, any oil paint can be used for asphalt.

Another aspect of the present invention is to apply a variety of colors in a more economical way by coating the oil paint for asphalt concrete to produce a color on the asphalt surface paved using the general aggregate instead of using the colored or colored aggregate in the modified asphalt. It can be expressed clearly. In other words,

1) mixing the general aggregate and colored asphalt pitch into a mixer;

2) mixing the filler and the asphalt modification additives;

3) curing after laying and compacting the mixture of 2) on the asphalt construction surface;

4) coating an oil paint consisting of a one-component or two-component oil paint consisting of acrylic and urethane resins, a solvent and an inorganic pigment;

By this, the colored modified asphalt of the present invention can be completed.

The colored asphalt pitch means an asphalt pitch having a color such as black or blackish brown.

In addition, it is also possible to further add an inorganic pigment in the step 2), and can be used without limitation as long as the inorganic pigment is commonly used, the amount of the inorganic pigment is not limited because it can be adjusted and used as necessary, In the present invention, it is preferably not used or used within the range of 0.1 to 5 parts by weight based on the total mixture.

In addition, the oil paint used in the present invention can be used in a variety of colors according to the application, it is excellent in the color expression to use an oil paint consisting of one- or two-component oil paints and solvents and inorganic pigments composed of acrylic and urethane resin, It is preferable because it has an anti-slip effect and can provide excellent coating film stability and water resistance. However, the present invention is not limited thereto, and any oil paint that can be used for asphalt may be used.

Hereinafter, one preferred embodiment of the present invention will be described in detail, but the present invention is not limited to the following examples.

Example 1

60 kg coarse aggregate, colored in red

34 kg of fine aggregate (sand: colored in red)

6 kg of filler (mineral filler)

Black asphalt pitch 5.3 kg

2 kg of ethylene vinyl acetate with number average molecular weight 30,000 as additive

Was mixed to prepare an asphalt mixture.

In the production method, first, the aggregate and the asphalt pitch were mixed, and then the filler and the ethylene vinyl acetate were mixed. The mixing was a dry mixing method.

Example 2

Except that the styrene-butadiene-styrene copolymer having a number average molecular weight of 35,000 as an additive in Example 1 was prepared in the same manner.

Example 3

Except for using an additional 2 kg of P-110S of Kolon Emulsion of aromatic petroleum resin in Example 1 was prepared in the same manner.

Example 4

As an additive in Example 1, 1 part by weight of HI-MILAN (manufactured by Mitsui DuPont Chemical Co., Ltd.) as an ionomer, 0.5 part by weight of a siloxane oligomer having a number average molecular weight molecular weight of 500, and 0.5 part by weight of tetramethoxysilane having a spreading molecular weight of 2500 It was prepared in the same manner as in Example 1 except for the additional use.

[Comparative Example]

Except that the additive was not used in Example 1 was prepared in the same manner.

Experimental Example 1

The physical properties of the asphalt mixture prepared in Examples 1 to 4 and Comparative Examples were measured by the following method and the results are shown in Table 1 together.

Marshall stability by KS F 2337 (Testing method for resistance to firing flow of bitumen mixture using Marshall tester), Flow chart by KS F 2337 (Testing method for resistance to firing flow of bitumen mixture using Marshall tester), KS F 2446 Density, dynamic stability and indirect tensile strength were measured by the method of measuring the apparent specific gravity and density of the ground bitumen mixture using the surface dry saturated specimen.

The dynamic stability was measured by applying a force of ground pressure of 6.4kg / cm2 to the specimen of 300mm × 300mm × 50mm at 60 ℃ according to the Wheel Tracking Test method, and measuring the number of round trips per turn depth (times / mm). The higher the value, the better the dynamic stability, which means less deformation.

Indirect tensile strength is also measured using a cylindrical specimen with a diameter of 100 mm at a strain rate of 50 mm per minute in the direction perpendicular to the cross section to measure the final horizontal strain at break, the maximum load at this time, and the maximum Indirect tensile strength was obtained according to the conventional method using the maximum load. Indirect tensile strength indicates that the higher the value, the higher the maximum load and the smaller the deformation value.

TABLE 1

Item Example 1 Example 2 Example 3 Example 4 Comparative example Marshall stability (60 ℃) 1,560 Kg 1680 Kg 1,698Kg 1,712 Kg 1,130Kg Dynamic Stability (60 ℃) 5,265 times / mm 6,230 times / mm 6,600 times / mm 6,720 cycles / mm 1,025 times / mm Indirect tensile strength (25 ℃) 1,311 kPa 1,217 kPa 1,286 kPa 1,316 kPa 1,092 kPa Recovery elastic modulus (40 ℃) 860 MPa 863 Mpa 870 Mpa 872 Mpa 814 MPa Slip Resistance (BPN) 67 63 65 66 51 Peeling Resistance (%) 0 0 0 0 64

As can be seen from the table, in the case of the embodiment according to the present invention was found to have excellent physical properties compared to the comparative example, in particular, the most excellent physical properties when additionally added ionomer, siloxane oligomer, silane compound as an additive It could be seen that.

Intrusion rate (dmm) by KS M 2252 (load 150g), softening point (℃) by KS M 2250, elongation (cm) by KS F 4052, original recovery rate (%) by KS F 2368, KS F Table 2 shows the result of measuring the tensile adhesion length (mm) by 2368.

TABLE 2

Item Example 1 Example 2 Example 3 Example 4 Comparative example Penetration (dmm) 86 92 93 95 70 Softening point (℃) 78 67 68 69 42 Elongation (cm) > 150 > 150 > 150 > 150 68 Recovery rate (%) 68 70 72 75 45 Tensile Adhesive Length (mm) 18 20 20 20 0.6

As shown in Table 2, in the case of the embodiment according to the present invention was found to be excellent in low temperature flexibility and adhesiveness compared to the comparative example, it was found that the elasticity is excellent.

In addition, the asphalt mixture of the present invention was found to increase the durability due to the excellent adhesion between the aggregate and asphalt, it can be seen that the application of the fluidizing agent when used in combination.

The present invention by coating the oil paint for asphalt concrete on the asphalt surface by using a colored or colored aggregate of the desired color irrespective of the primary color of the binder material used in the production of the color ascon, or by using a general aggregate instead of the colored or colored aggregate It is possible to express vivid colors in a more economical way, and by using at least one asphalt modification additive selected from ethylene-based copolymer or styrene-based copolymer, chemically bonding the surface of aggregate with asphalt, It is possible to provide a colored, modified asphalt mixture that is excellent, durable, and capable of reducing frictional noise during vehicle operation.

Claims (9)

1) 50 to 80% by weight of colored or colored coarse aggregate, 15 to 40% by weight of colored or colored fine aggregate, and 5 to 10% by weight of filler to be 100 parts by weight, and colored natural as a binder to the mixture. Adding 5 to 30 parts by weight of any one asphalt pitch or transparent petroleum resin-based colorless binder selected from asphalt, petroleum asphalt, tar and mixing into a mixer; 2) Ionomer containing 1 to 10 parts by weight of any one or more additives for asphalt modification and a copolymer of ethylene and methacrylic acid, which are selected from an ethylene copolymer or a styrene copolymer, and a metal salt of sodium or zinc in itself. 0.5 to 2 parts by weight, 0.1 to 2 parts by weight of a siloxane oligomer having a number average molecular weight of 200 to 15,000 or a silane compound having a number average molecular weight of 2,000 to 15,000, by mixing with a fluidizing agent; 3) curing after laying and compacting the mixture of 2) on the asphalt construction surface; Method for producing a colored modified asphalt, characterized in that having a. The method of claim 1, Aromatic petroleum resin, coumarone indene resin, aliphatic petroleum resin, phenol resin, rosin, hydrogenated rosin, modified rosin, coumarone-indene resin, shellac, copal, Method for producing a colored modified asphalt, characterized in that for use in addition to 1 to 10 parts by weight of at least one selected from the group consisting of fatty acids, polyamide resins and polyester resins. The method of claim 1, The said siloxane oligomer is tetraalkoxysilane, such as tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, tetrabutoxysilane; Methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, butyltrimethoxysilane, butyltriethoxysilane, pentyl Limethoxysilane, pentyltriethoxysilane, heptyltrimethoxysilane, heptyltriethoxysilane, octyltrimethoxysilane, octyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, hexadecyl Trimethoxysilane, hexadecyltriethoxysilane, octadecyltrimethoxysilane, octadecyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane , γ-methacryloxypro Trialkoxysilanes such as philtriethoxysilane; A process for producing colored modified asphalt, characterized by using one produced from any one or more alkoxysilanes selected from dialkoxysilanes such as dimethyldimethoxysilane and dimethyldiethoxysilane. The method of claim 1, The silane compound is trifluoropropyltrimethoxysilane, trifluoropropyltriethoxysilane, tridecafluorooctyltrimethoxysilane, tridecafluorooctyltriethoxy, which are compounds of the following general formula (1) At least one perfluoroalkylalkoxysilane selected from silane, heptadecafluorodecyltrimethoxysilane, heptadecafluorodecyltriethoxysilane, or tetramethoxysilane which is a compound of the general formula (2) A method for producing colored modified asphalt, wherein any one or more tetraalkoxysilanes selected from ethoxysilane, tetrapropoxysilane and tetrabutoxysilane are used. [General Formula (1)] CF ₃ (CF ₂ ) nCH ₂ CH ₂ Si (OR ₂ ) ₃ (R ₂ represents an alkyl group having 1 to 5 carbon atoms, n is an integer of 0 to 12) [General Formula (2)] Si (OR ₁ ) ₄ (R ₁ is an alkyl group having 1 to 5 carbon atoms) The method of claim 1, The method of manufacturing colored modified asphalt, characterized in that further adding an inorganic pigment in the second step. The method according to any one of claims 1 to 5, Peeling the black or black brown asphalt of the surface using the air or water blast after the step 3); The method of manufacturing colored modified asphalt further comprising. The method according to any one of claims 1 to 5, Coating the oil-based paint for asphalt after the step 3); The method of manufacturing colored modified asphalt further comprising. 1) 50 to 80% by weight of general coarse aggregate, 15 to 40% by weight of general fine aggregate, and 5 to 10% by weight of filler to be 100 parts by weight, one of the asphalt selected from colored natural asphalt, petroleum asphalt, tar Putting 5 to 30 parts by weight of the pitch into a mixer to mix; 2) Ionomer comprising 1-10 parts by weight of at least one asphalt modifying additive selected from ethylene-based copolymer or styrene-based copolymer and a copolymer of ethylene and methacrylic acid and a metal salt of sodium or zinc in itself. 0.5 to 2 parts by weight, 0.1 to 2 parts by weight of a siloxane oligomer having a number average molecular weight of 200 to 15,000 or a silane compound having a number average molecular weight of 2,000 to 15,000, by mixing with a fluidizing agent; 3) curing after laying and compacting the mixture of 2) on the asphalt construction surface; 4) coating an oil paint consisting of a one-component or two-component oil paint consisting of acrylic and urethane resins, a solvent and an inorganic pigment; Method for producing a colored modified asphalt, characterized in that having a. The method of claim 8, The method of manufacturing colored modified asphalt, characterized in that further adding an inorganic pigment in the second step.