JPH07197407A - Brilliant and clear asphalt paving surface and execution method thereof - Google Patents

Abstract

PURPOSE:To promote visual recognizability in the night time or in the case of rain in a technique for fixing a brilliant material on the surface of an asphalt composite material. CONSTITUTION:A holding body 5 having 1-5mm of particle size is formed of polycarbonate resin mixed with a hiding agent 2, and glass beads 7 having smaller size than that of the holding body are fixed on the surface thereof to form a brilliant material 4. Resin composition containing the hiding agent 2 is applied to the asphalt composite material 1 to form a synthetic resin layer 9, and the brilliant material is scattered on the surface of the synthetic resin layer 9 in an adhesive state. A synthetic resin coating 3 fixing the brilliant material 4 of the composition mentioned above on the surface thereof in a projected state is formed on the asphalt composite material 1 by solidification of the synthetic resin layer 9, the black color of the asphalt composite material is completely hidden, and light-scattering efficiency and return refletivity of the glass beads are revealed. Specially, the brilliant material 4 is projected from rain water flowing on the paving surface, so that good legibility in the night time or in the case of rain can be ensured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an asphalt pavement surface having good visibility at night and in the rain and its construction method, and a light-colored synthetic resin coating on the surface of an asphalt mixture for light scattering and retroreflection. It is intended to improve the visibility at night by fixing a material having a property (hereinafter referred to as "brightening material").

[0002]

2. Description of the Related Art Asphalt mixture is black and has a strong light absorption power, and absorbs the light emitted from the headlights of a moving vehicle. Easy to overlook and poor visibility at night or in rainy weather. Therefore, there is a problem that traffic accidents are likely to occur at intersections and pedestrian crossings without street lights. Therefore, a method has conventionally been proposed in which a white paint containing a fluorescent dye is applied to the surface of an asphalt mixture and the fluorescent dye is emitted by the headlights of automobiles to make it easier for the driver to visually recognize the position of intersections and pedestrian crossings. ing.

However, in the above method, the position of the intersection and the pedestrian crossing can be easily seen, but the visibility at night or in the rain for an obstacle or a person on the surface of the asphalt mixture is not sufficiently improved. In order to increase the visibility of obstacles and people on the surface of the asphalt mixture at night or in the rain, it is necessary to brighten the entire surface of the asphalt mixture at intersections and pedestrian crossings, and various methods have been proposed in the past. ing. For example, (a) a coating material mixed with glass beads (brightening material) and a luminescent material is applied to the surface of an asphalt mixture (JP-A-52-81933), (B) It is applied to the surface of a general national highway. On a primer, a convex hemisphere made of a solventless reaction-curable resin having a diameter of 5 to 50 mm and a height of 2 to 10 mm is fixed (JP-A-3-47308).
No.), (C) a mixture of glass beads (glossy material), a color pigment and a granular aggregate, which is fixed to a concrete surface with a binder resin (JP-A-3-224903).

[0004]

However, in the above method (a), the glass beads are embedded in the coating film, and in order to utilize the light scattering property and retroreflective property of the glass beads, the coating film is Must be transparent. Therefore, when this means is used for an asphalt mixture, it is not possible to hide the black color of the underlying asphalt mixture, and the surface of the asphalt mixture is not brightened by the irradiation of the headlight.
It cannot improve visibility at night or in rainy weather.
(B) and (c) relate to road marking, and when used in a place where automobiles frequently come and go, there are problems in durability and wear resistance. Furthermore, the method (b) is to apply a white primer on the surface of concrete and then apply and fix convex hemispheres with a paint marker on the surface, and use this on the surface of the asphalt mixture. In this case, it is possible to hide the black color of the underlying asphalt mixture to brighten the asphalt pavement surface, and if glass beads are fixed to the surface of the convex hemisphere, light scattering and retroreflectivity can be used. Although it is possible to improve visibility at night or in rainy weather, there is a problem that the construction work is troublesome and the road must be cut off for a long time. Further, the means (c) is to mix the glass beads and the granular aggregate with the binder resin and apply the mixture to the road surface. When this means is used for the asphalt mixture, the black color of the asphalt mixture as the base material is used. Can be hidden to make the asphalt pavement surface brighter, but since the glass beads are embedded in the binder resin layer together with the white granular aggregate, the light scattering properties and retroreflectivity of the glass beads are fully utilized. Therefore, it is not possible to improve visibility at night or in rainy weather.

Further, asphalt and concrete are
Since the surface composition is different and the asphalt has a larger coefficient of thermal expansion than that of concrete, it is necessary to select a synthetic resin film that is difficult to peel from the surface of the asphalt mixture. However, the means (a) does not disclose any coating film forming component that can form such a synthetic resin film, and the means (b) uses a paint for normal temperature or heating as a primer. Although there is a statement that acrylic is suitable,
Its composition is not disclosed. Various means are listed as the binder resin in the means of (c), but only the examples of the moisture-curable urethane and the mixture of the epoxy resin and the modified aliphatic polyamine are disclosed in the examples, No composition is disclosed.

It is an object of the present invention to provide a bright bright asphalt pavement surface having good visibility at night and in rainy weather, and a method for constructing the same.

[0007]

In the asphalt pavement surface according to the present invention, a synthetic resin coating 3 containing a masking agent 2 is applied to the surface of the asphalt mixture 1, and the surface of the synthetic resin coating 3 is The glittering materials 4 are scattered in a protruding state,
The glittering material 4 is formed by fixing glass beads 7 containing a masking agent 2 and having a particle diameter of 1 to 5 mm and made of a polycarbonate resin, the glass beads 7 having a diameter smaller than that of the holder.

The holding member 5 is formed by injection molding or extrusion molding by adding a masking agent 2 to a polycarbonate resin to form a granular shape. As the masking agent to be added to the carrier 5, various inorganic or organic pigments such as titanium dioxide, lead white, and yellow lead can be used, and rutile type titanium dioxide is particularly preferable because it has a large masking rate. As a method for increasing the adhesive force of the glass beads 7 to the holder, a method of previously attaching a silane coupling agent or a titanate coupling agent to the glass beads, a method of previously mixing the holder 5 with the coupling agent, There is a method of top-coating the surface of the fixed glass beads 7 with a synthetic resin composition containing no hiding agent. As a method of projecting and fixing the glittering material 4 from the synthetic resin film 3 having excellent heat resistance and abrasion resistance, the viscous synthetic resin layer 9 formed of the resin composition applied to the asphalt mixture is coated with the glittering material 4. There is a method of spraying the glazing material 4 and removing excess glitter material after curing. If the resin composition containing no hiding agent is top-coated with a spray or a roller on the asphalt pavement surface having a good bright bright color according to the present invention, the bright material can be effectively prevented from falling off.

A curable resin composition comprising a blocked urethane prepolymer and a polyamine compound containing at least one amino group represented by the following structural formula as a resin composition for forming a synthetic resin film to which a glitter material is fixed. Can be used.

[0010]

[Chemical 1] (In the formula, R ₁ and R ₂ are hydrocarbons having 1 to 4 carbon atoms, or R ₁ and R ₂ may combine to form a ring.)

As the blocked urethane prepolymer, a urethane prepolymer having a terminal isocyanate group blocked with an oxime compound is suitable, and the polyamine compound is selected from the group consisting of alicyclic diamines and polyoxypropylene polyamines. Also suitable is at least one compound. A filler can be added if necessary.

Examples of the organic polyisocyanate which is a constituent of the urethane prepolymer include aliphatic, alicyclic, aromatic or araliphatic polyisocyanates and modified products thereof. Specifically, there are hexamethylene diisocyanate (HDI), trimethylhexamethylene diisocyanate (TMDI), lysine diisocyanate (LDI), etc. as the aliphatic polyisocyanate, and dicyclohexylmethane diisocyanate (HMDI), isophorone diisocyanate (IPDI) as the alicyclic polyisocyanate. ), 1,4-cyclohexane diisocyanate (CHDI), hydrogenated xylylene diisocyanate (HXDI), hydrogenated tolylene diisocyanate (HTDI) and the like, and toluene diisocyanate (TDI), 4,
4 '(or 2,4')-diphenylmethane diisocyanate (MDI), naphthalene diisocyanate (ND)
I), xylylene diisocyanate (XDI), tolidine diisocyanate (TODI), P-phenylene diisocyanate (PPDI), and the like, and α, α, α ′, α′-tetramethylxylylene diisocyanate (TMXDI) as araliphatic polyisocyanate. )and so on. Preferred among these are HDI, HMDI, I
PDI, particularly preferred is HMDI, IPDI
Is. Examples of the modified product of the organic polyisocyanate compound include compounds in which a part or all of the isocyanate groups of the above-described compounds are modified to a carbodiimide group, a uretdione group, a uretoimine group, a buret group, an isocyanurate group, or the like. . You may use these 2 or more types together. Of these, the preferred one is HD
Buret-modified and isocyanurate-modified polyisocyanates derived from I, HMDI, and IPDI.

As the polyols which are the constituent components of the urethane prepolymer, there are commonly used polyether polyols, polyester polyols, polymer polyols,
There are polycarbonate polyols, polylactone polyols, polyolefin polyols and mixtures of two or more of these. The urethane prepolymer containing a terminal isocyanate group is produced by adding a known urethane polymerization catalyst to the mixture of the above-mentioned organic polyisocyanate and polyols, and reacting the mixture.

As the blocking agent for the terminal isocyanate group, oxime compounds (acetoxime, methylethylketoxime, methylisobutylketoxime, etc.);
Lactams (ε-caprolactam and the like); alkylphenol compounds [monoalkylphenol (cresol,
Nonylphenol, etc., Dialkylphenol (3,
5-xylenol, di-t-butylphenol, etc.),
Trialkylphenol (trimethylphenol etc.)
Etc.]; active methylene compounds [malonic acid diesters (such as diethyl malonate), acetylacetone, acetoacetic acid esters (such as ethyl acetoacetate)]; alcohols (methanol, ethanol, n-butanol); hydroxyl group-containing ethers (methylcellosolve) , Butyl cellosolve); hydroxyl group-containing esters (ethyl lactate, amyl lactate, etc.); mercaptans (butyl mercaptan, hexyl mercaptan, etc.); acid amides (acetanilide, acryl amide, timer acid amide, etc.); imidazoles (imidazole, 2) -Ethylimidazole, etc.); acid imides (succinimide, phthalimide, etc.), etc .; and mixtures of two or more thereof. Of these, preferred are oxime compounds and lactams. Particularly preferred is methyl ethyl ketoxime.

Further, as a resin composition for forming a synthetic resin film for fixing a glittering material, a curable resin composition comprising a polymerizable unsaturated monomer, a vinyl ester resin, an air-drying unsaturated monomer and a polymerization initiator. Can be used. Examples of the polymerizable unsaturated monomers include alkyl acrylates such as methyl acrylate, ethyl acrylate, n-butyl acrylate, i-butyl acrylate, t-butyl acrylate, and 2-ethylhexyl acrylate, and methacrylic acid. Methacrylic acid esters such as lauryl can be used.

As the vinyl ester resin, an epoxy acrylate having a (meth) acrylate group at the molecular end or a polyester acrylate having a (meth) acrylate group at the molecular end can be used. The epoxy acrylate having a (meth) acrylate group at the molecular end is a bisphenol type epoxy resin alone or a mixture of a bisphenol type epoxy resin and a novolac type epoxy resin, and the average epoxy equivalent thereof is preferably 150. It is an epoxy vinyl ester obtained by reacting an epoxy resin in the range of to 450 with an unsaturated monobasic acid in the presence of an esterification catalyst. Typical examples of the above-mentioned bisphenol type epoxy resin include glycidyl ether type epoxy resins obtained by the reaction of epichlorohydrin and bisphenol A or bisphenol F and having substantially two or more epoxy groups in one molecule. Epoxy resins, dimethylglycidyl ether type epoxy resins obtained by the reaction of methyl epichlorohydrin with bisphenol A or bisphenol F, or epoxy resins obtained from an alkylene oxide adduct of bisphenol A and epichlorohydrin or methane epichlorohydrin. Representative examples of unsaturated monobasic acids include acrylic acid, methacrylic acid, crotonic acid, monomethylmalate, monopropylmalate, sorbic acid and mono (2-ethylhexyl) malate. In addition, these unsaturated monobasic acids may be used alone or in combination of two or more kinds. Polyester acrylate having a (meth) acrylate group at the molecular end is a mixed solution of a saturated or unsaturated polyester containing at least one (meth) acrylic acid ester group in one molecule or a polymerizable unsaturated monomer thereof. is there. This polyester is obtained by an ester reaction between a glycol component or a triol component and a dibasic acid or a tribasic acid component.
If necessary, a monoepoxide compound, an epoxy compound and an isocyanate compound may be used in combination. Examples of the glycol of polyester include alkylene glycols represented by ethylene glycol, propylene glycol and butylene glycol, polyalkylene glycols represented by diethylene glycol, polyethylene glycol, dipropylene glycol and polypropylene glycol, bisphenol A and bisphenol F, An addition reaction product of a dihydric phenol typified by bisphenol S and an alkylene oxide typified by ethylene oxide or propylene oxide can be used. Triols include glycerin, trimethylolpropane,
Examples include trimethylolethane and 1,2,6-hexanetriol. Further, as the dibasic acid (anhydride), i
-Phthalic acid, o-phthalic acid, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, tetrachlorophthalic acid, malonic acid, succinic acid, adipic acid, maleic acid, maleic anhydride, etc. Acid, aconitic acid, butanetricarboxylic acid, 6-carboxy-3-methyl-1,2,3,6-hexahydrophthalic acid and the like.

As the unsaturated compound having air-drying property, unsaturated polyester resin or vinyl ester resin into which an air-drying component is introduced can be used. As the method for introducing the air-dry component, a method in which a compound containing an allyl ether group is used in combination with a glycol component, a method in which a compound containing a cycloaliphatic unsaturated polybasic acid and a derivative thereof is used in combination with an acid component, dicyclopentadiene There is a method of using a compound containing ## STR1 ## or a method of using a drying oil or an epoxy reactive diluent together. As the allyl ether group-containing compound, known compounds can be used, but typical examples thereof include ethylene glycol monoallyl ether, diethylene glycol monoallyl ether, triethylene glycol monoallyl ether, polyethylene glycol monoallyl ether, and propylene glycol. Monoallyl ether, dipropylene glycol monoallyl ether,
Tripropylene glycol monoallyl ether, polypropylene glycol monoallyl ether, 1,2-butylene glycol monoallyl ether, 1,3-butylene glycol monoallyl ether, hexylene glycol monoallyl ether, octylene glycol monoallyl ether, trimethylolpropane Oxirane rings such as allyl ether compounds of polyhydric alcohols such as monoallyl ether, trimethylolpropane diallyl ether, glycerin monoallyl ether, glycerin diallyl ether, pentaerythritol monoallyl ether, pentaerythritol triallyl ether, allyl glycidyl ether, etc. Examples thereof include allyl ether compounds.

As other glycol components to be used in combination, ethylene glycol, propylene glycol,
Diethylene glycol, dipropylene glycol, 1,
3-butanediol, 1,4-butanediol, triethylene glycol, tetraethylene glycol, bisphenol A, hydrogenated bisphenol A, ethylene glycol carbonate and the like can be mentioned, and they can be used alone or in combination. Other oxides such as ethylene oxide and propylene oxide can be used as well. Further, polycondensates such as polyethylene terephthalate can be used as a part of glycols and acid components.

Further, as the compound comprising the above-mentioned cycloaliphatic unsaturated polybasic acid and its derivative, tetrahydrophthalic anhydride, endomethylenetetrahydrophthalic anhydride,
Examples include methyltetrahydrophthalic anhydride, α-terhinene-maleic anhydride adduct, rosin and ester gum.
In addition, α, which is used alone or in combination with these,
Examples of β-unsaturated dibasic acids or acid anhydrides thereof include maleic acid, maleic anhydride, fumaric acid, itaconic acid, citraconic acid, chlorclayic acid and their esters, and aromatic saturated dibasic acids or their anhydrides. As the product, phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid,
There are nitrophthalic acid, halogenated phthalic anhydride and esters thereof, and as the aliphatic or alicyclic saturated dibasic acid, oxalic acid, malonic acid, succinic acid, adipic acid, sebacic acid, acelaic acid, glutaric acid, Hexahydra phthalic anhydride and esters thereof, etc., which may be used alone or in combination. Further, as a typical compound containing dicyclopentadiene, hydroxylated dicyclopentadiene and the like can be mentioned.

Examples of the drying oil include linseed oil, soybean oil, cottonseed oil, peanut oil, coconut oil, and the like, or reaction products of these fatty oils with polyhydric alcohols such as glycerin. Epoxy-reactive diluents include monoepoxy compounds and polyepoxy compounds. The former includes allyl glycidyl ether, n-butyl glycidyl ether, phenyl glycidyl ether, glycidyl methacrylic acid ester and the like, and the latter includes diglycidyl ether and the like.

The polymerization initiator may be in the form of powder or liquid, and a redox catalyst composed of a combination of a curing agent and a curing accelerator is usually used. Various types of redox catalysts can be used, but it is preferable to use a combination of a tertiary amine as the curing accelerator and an organic peroxide as the curing agent. As the above-mentioned tertiary amine, it is preferable to use one in which at least one aromatic residue is directly bonded to a nitrogen atom, and particularly N, N'-dimethylaniline, N, N'-
Examples thereof include dimethyl-p-toluidine, N, N'-dihydroxyethyl-p-toluidine, N, N'-di-2-hydroxypropyl-p-toluidine and the like, which may be used alone or in combination. Examples of the organic peroxide include diacyl peroxide-based, peroxy ester-based, hydroperoxide-based, dialkyl peroxide-based, ketone peroxide-based, peroxyketal-based, alkyl perester-based, percarbonate-based, etc. Known ones are used and are appropriately selected depending on the kneading conditions, curing temperature and the like. Further, when the above organic peroxide is used, it is preferable to use a paste or powder which is diluted to a concentration of 50% with an inert liquid or solid in order to avoid handling danger. Then, it is particularly preferable to use benzoyl peroxide whose surface is treated with an inorganic powder containing water of crystallization. Examples of the inorganic powder include calcium phosphate, calcium sulfate, magnesium carbonate, aluminum hydroxide and the like.

Further, as a resin composition for forming a synthetic resin film for fixing a glittering material, an epoxy resin having an average of more than one adjacent epoxy groups in the molecule, a polyhydroxy compound and an excess polyisocyanate compound are used. A urethane prepolymer having an isocyanate group content of 1 to 10% by weight having an average of more than one isocyanate group in the obtained molecule and an average molecular weight of 600 to 20,000 is a compound having a phenolic hydroxyl group and an NCO / phenolic hydroxyl group equivalent ratio = From a blocked isocyanate compound obtained by masking with 1 / 1.0 to 1 / 2.0 and a urea bond-containing active organic amine curing agent obtained by reacting an active organic amino group-containing compound with an amine excess The following epoxy-based curable resin composition can be used.

The method for constructing an asphalt pavement surface according to the present invention comprises a polycarbonate resin containing a masking agent 2 and a particle size of 1
~ 5 mm (preferably 2 to 4 mm) holding body 5 is molded, and glass beads 7 having a diameter smaller than that of the holding body are fixed to the surface of the holding body 5 to prepare a glittering material 4, and the asphalt mixture 1 contains a masking agent 2. To form a synthetic resin layer 9, and the glittering material is sprayed on the surface of the synthetic resin layer 9 in a viscous state, and the synthetic resin film 3 formed by curing the synthetic resin layer 9 is formed. The glittering material 4 is fixed to the surface in a protruding state.

[0024]

In the asphalt paving surface of the present invention, the bright material 4 containing the masking agent 2 is fixed to the synthetic resin film 3 containing the masking agent 2, so that the black color of the asphalt mixture is completely masked. You can Furthermore, since the glittering material 4 projects from the synthetic resin film 3, the light scattering property and retroreflectivity of the glass beads can be exhibited. In particular, even when it is raining at night, since the glittering material 4 projects from the rainwater flowing on the asphalt pavement surface, it is possible to ensure the visibility when it rains at night.

Among the resin compositions for forming a synthetic resin film to which a glittering material is fixed, an epoxy resin composition is disclosed in Japanese Patent Laid-Open No.
It is published in Japanese Patent Publication No. 3-108017. These resin compositions react at room temperature to form a synthetic resin film 3 and have excellent adhesiveness to an asphalt mixture and a glittering material (carbonate resin having glass beads fixed to the surface), Has a good balance of strength and flexibility, and has a bright and bright asphalt pavement surface with weather resistance and water resistance,
The wear resistance can be improved.

[0026]

EXAMPLE FIG. 1 is an enlarged view of an asphalt pavement surface of the present invention. The surface of the black asphalt mixture 1 is coated with 1 to 2 synthetic resin coatings 3 containing rutile titanium dioxide 2.
It is attached with a thickness of mm, and the glitter material 4 is scattered on the surface of the synthetic resin film 3. The glittering material 4 is made of a polycarbonate resin containing titanium dioxide 2 and has a particle size of 1 to 3.
The glass beads 7 having a diameter of 0.5 mm are fixed to the surface of the holder 5 having a diameter of 0.5 mm via the silane coupling agent layer 6.

FIG. 2 shows a method of constructing an asphalt pavement surface according to the present invention. A storage box 8 in which a polycarbonate resin containing rutile type titanium dioxide 2 is extruded into a rod shape and cut into 1 to 3 mm to form a holder 5, and glass beads 7 having a silane coupling agent layer 6 attached to the surface thereof are put therein. Then, the holding body 5 is dropped and glass beads are fixed on the surface thereof to manufacture the glittering material 4. Next, on the surface of the asphalt mixture 1, resin compositions A to E having the following formulations
Is applied, and the glittering material 4 is dispersed on the viscous synthetic resin layer 9. The glittering material 4 is fixed in a protruding state on the surface of the synthetic resin film 3 formed by curing the synthetic resin layer 9, so that an asphalt pavement surface having good visibility at night and in the case of rain can be formed. When the asphalt pavement surface of the present invention is used in a place with a large amount of traffic such as an intersection, resin compositions A to E containing no masking agent on the asphalt pavement surface constructed by the above method or a commercially available top coating resin composition If it is applied thinly, the durability of the asphalt pavement surface of the present invention can be improved.

[0028]

[Table 1] [Epoxy-based composition formulation] Resin composition A Resin composition B Main agent (made by AC R, the following) 260.3g 260.6g Curing agent (made by AC R, the following) 200.7g 200.0g Catalyst (tertiary amine) 7.1g 7.9g Cardonia (asbestos) thickener 26.0g-Aerogel thickener-7.8g [Main agent] [Curing agent] ADEKA REGEN EP-4100 (Bisphenol-A) 43 A C-Hartner H-4024 25 BGE-R (Butyl glycidyl ether) 2 AC R-Hartner H-4073 75 ACR Epoxy D512 (Styrenated phenol) 5 EM color (Bisphenol A, Titanium dioxide) 100

The main agent and the cardonian (asbestos) thickener are thoroughly stirred, and the main agent and the Aerozyl thickener are sufficiently stirred, and then the curing agent and the catalyst are added. 15.45 × 26.55 cm (area 410 cm) of the produced resin compositions A and B
² ) It was applied to the slate plate so that the thickness of the coating would be 1 or 2 mm, and 4.1 g of the glittering material was sprayed, and then 1
Samples 1-8 were made by curing at 6.5 ° C or 43.0 ° C.

[0030]

[Table 2] [Acrylic resin composition] Resin composition C Gelrod F430W (Kanebo NSC made acrylic resin) 9000g Bellrod FC (Kanebow NSC made organic peroxide) 450g Titanium dioxide 1800g Powdered silica 150g

The resin composition C prepared as described above was applied to a slate plate having a size of 15.45 × 26.55 cm (area: 410 cm ² ) so that the thickness of the film was 2 mm, and the glittering material was added thereto. Sample 9 was prepared by spraying 0.1 g and then curing at room temperature for 65 minutes.

[0032]

[Table 3] [Urethane-based resin composition] Resin composition D Resin composition E Chemiox KA-125A (Sanyo Chemical Co., Ltd. Block 2346-Urethane prepolymer effective NCO 3.5%) Chemiox KA-903A (Sanyo Chemical Co., Ltd. Block 2346 Urethane prepolymer Effective NCO 2.9%) Titanium dioxide 300 300 Calcium carbonate (25 μm or less) 150 150 Dicyclohexylmethanamine (Amine equivalent = 105 (g / eq) 204-3,3-Dimethyl-4,4-diaminodicyclohexyl Methane − 192 Total 3000 2988

Resin compositions D and E produced by blending as described above were 15.45 × 26.55 cm (area 410 cm).
^After coating the slate plate of ² ) so that the thickness of the coating is 1 or 2 mm, and spreading 4.1 g of the glittering material, 12
After curing in a low temperature incubator at 0 ° C for 20 minutes, samples 10 and 1 were prepared.
I made 1, 12, and 13.

[0034]

[Table 4] Used resin coating amount Thickness Curing temperature Sample 1 Resin composition A 49.2g 1mm 16.5 ° C Sample 2 Resin composition A 98.4 2 16.5 Sample 3 Resin composition A 49.2 1 43.0 Sample 4 Resin composition A 98.4 2 43.0 Sample 5 Resin composition B 49.2 1 16.5 Sample 6 Resin composition B 98.4 2 16.5 Sample 7 Resin composition B 49.2 1 43.0 Sample 8 Resin composition B 98.4 2 43.0 Sample 9 Resin composition C 98.4 2 Room temperature curing Sample 10 Resin Composition D 49.2 1 120.0 Sample 11 Resin composition D 98.4 2 120.0 Sample 12 Resin composition E 49.2 1 120.0 Sample 13 Resin composition E 98.4 2 120.0

The resin compositions A and B do not need to use a catalyst when the temperature is 25 ° C. or higher, and do not cure at 10 ° C. or lower. Regarding the curing time, when cured at 16.5 ° C., the surface of the synthetic resin coating becomes hard after 3 and a half hours, and it slightly drops when pressed with a finger. At this time, the hardness of the surface is such that the nails are slightly raised. When cured at 43.0 ° C., the surface of the synthetic resin film becomes hard after 4 and a half hours, and it slightly drops when pressed with a finger. At this time, the hardness of the surface is such that the nails are slightly rattling.
After 5 and a half hours, it was taken out from the constant temperature incubator and left to stand, and it was cured as the surface temperature decreased. Resin composition C is -1
It cures at 0 ° C. for 60 minutes, at room temperature for 40 minutes, and at 60 ° C. for 35 minutes. The resin compositions D and E are cured with an infrared heater (Spot heater SHS manufactured by Phoenix Electric Co., Ltd.) at 120 ° C. for 10 to 20 minutes.

Next, the method and results of the glitter test of the asphalt pavement surface of the present invention will be described. In order to confirm the nighttime visibility of Samples 1 to 13, the light luminance was measured using a rain mark reflection luminance measuring device (trademark "Mirolux 7").

[0037]

[Table 5] Spray amount Dry state Wet state Flat part g / m ² mcd / m ² Lx mcd / m ² Lx mcd / m ² Lx Sample 1 41.0 398 223 19 Sample 2 41.0 347 184 29 Sample 3 41.0 347 223 82 Sample 4 41.0 354 196 44 Sample 5 41.0 305 239 37 Sample 6 41.0 199 172 24 Sample 7 41.0 358 279 15 Sample 8 41.0 247 200 14 Sample 9 41.0 409 258 75 Sample 10 41.0 345 250 30 Sample 11 41.0 320 220 20 Sample 12 41.0 390 240 25 Sample 13 41.0 350 220 22 Comparative sample 1 41.0 250 110 − Comparative sample 2 41.0 300 160 − Comparative sample 3 − 31 − −

The comparative sample 1 is a synthetic resin coating made of petroleum resin and Unibeads 108L (particle size 106 made by Union Co., Ltd.
~ 850 microns) is fixed in a semi-submerged state. Comparative sample 2 is a synthetic resin film with poly beads (manufactured by SWARCO) dispersed therein, and comparative sample 4 is a blank sheet. As is clear from the above test results, Samples 1-5, 7, 9-1
It can be seen that the sample No. 3 is superior to the comparative sample 1 in glitter (retroreflectivity).

Next, the adhesive strength of the synthetic resin film to the asphalt mixture will be examined.

[0040]

[Table 6]

[0041]

[Table 7]

The above-mentioned unsaturated polyester acrylate is condensed with 2 mol of isophthalic acid and 2 mol of 1,2-propylene glycol, and 1 mol of maleic anhydride is added thereto for condensation, and 50 ppm of hydroquinone and 2 mol of glycidyl methacrylate are condensed. In addition, it was obtained by reacting,
The acid value of solid content is 10. The air-drying unsaturated compound is 2 mol of terephthalic acid and 1.
It was obtained by condensing 5 mol of 1 mol of pentaerythritol triallyl ether and has an acid value of 20.

[0043]

[Table 8] [Urethane resin composition] Sample 16 Sample 17 Chemiox KA-903A (blocked urethane prepolymer 100 100 manufactured by Sanyo Chemical Industries, Ltd. effective NCO 3.9%) Chemiox KA-762B (aliphatic amine compound manufactured by Sanyo Chemical Industry) Amine equivalent = 155 (g / eq) 14-Chemiox KA-902B (Aliphatic amine compound Sanyo Chemical Industries, Ltd. Amine equivalent = 119 (g / eq) -11

The above epoxy composition, acrylic resin composition and urethane resin composition were tested according to the following procedure, and the following results were obtained.

[0045]

[Table 9] Curing time Hardness Asphalt Adhesive strength Color difference Strength retention / elongation retention (℃ × min) (Shore-A) (Kgf / cm ² ) ΔE (%) (%) Sample 14 15 × 240 67.4 18 5.0 105 95 Sample 15 5 × 65 70 15 3.7 105 97 Sample 16 120 × 20 67 12 6.0 103 94 Sample 17 120 × 20 50 12 6.2 100 95

The asphalt adhesive strength was measured by comparing the above resin compositions 14 to 17 with the asphalt mixture surface (300 × 300 × 7).
0 mm) to form a film with a thickness of 2 mm, leave it in an atmosphere of 65% relative humidity for 1 week, make a notch, and bond a 40 x 40 mm steel jig with an epoxy adhesive to bond After the agent was cured, it was tested with a hydraulic adhesion tester manufactured by Yamamoto Heavy Machinery Co., Ltd. at 20 ° C. at a loading speed of 1 kg / cm ² / sec. As for weather resistance, the above resin compositions 14 to 17 were applied to the asphalt mixture surface (300 × 300 × 70 mm) to form a film having a thickness of 2 mm, and JIS-K-5400.
A test for 3000 hours was conducted in accordance with 6-17. After the lapse of time, the color difference was measured according to JIS-Z-8722. As a tester, a color machine manufactured by Nippon Denshoku Co., Ltd., Sigma-80 was used. Furthermore, after the weather resistance test, JIS-
According to K-6301 (vulcanized rubber physical test method), a No. 1 dumbbell test piece was sampled and sampled, the tensile strength and the tensile elongation were measured, and the strength retention rate and the elongation retention rate were calculated by the following formulas. Was calculated.

[0047]

[Equation 1]

From the above test results, it can be seen that the synthetic resin film of the present invention is excellent in the adhesive force to the asphalt mixture, weather resistance and durability.

[0049]

As described above, according to the present invention, the black color of the asphalt mixture can be completely hidden, and the glittering material is fixed in a state of protruding from the synthetic resin film. It is possible to obtain a light-colored asphalt pavement surface having excellent properties and retroreflectivity. Therefore, if the present invention is carried out at an intersection or a pedestrian crossing without street lights, the asphalt pavement surface will be brightened by the headlights of automobiles.
The visibility at night and in the rain is dramatically improved, and it is possible to prevent traffic accidents at intersections and the like. In addition, the synthetic resin coating that adheres the glitter material to the surface of the asphalt mixture has excellent adhesion to the asphalt mixture with a large coefficient of thermal expansion, and it is a bright bright asphalt pavement with excellent durability and weather resistance. You can get a face.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an asphalt pavement surface according to the present invention.

FIG. 2 is a schematic diagram of a method for constructing an asphalt pavement surface according to the present invention.

[Explanation of symbols]

 1 Asphalt Mixture 2 Titanium Dioxide 3 Synthetic Resin Coating 4 Glittering Material 5 Support 7 Glass Beads 9 Viscous Synthetic Resin Layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuo Furuseki 1-11, Hitotsubashi-honcho, Higashiyama-ku, Kyoto-shi, Kyoto Sanyo Chemical Industry Co., Ltd.

Claims (13)

[Claims] 1. A synthetic resin film (3) containing a concealing agent (2) is applied to the surface of an asphalt mixture (1), and the surface of the synthetic resin film (3) has a glittering material (4). Are scattered in a protruding state, and the glittering material (4) is a glass bead having a diameter smaller than that of the holder (5) made of a polycarbonate containing a masking agent (2) and having a particle size of 1 to 5 mm. 7) The bright and bright asphalt pavement surface to which is adhered. 2. The synthetic resin film (3) according to claim 1, wherein a resin composition comprising a blocked urethane prepolymer and a polyamine compound having at least one amino group represented by the following structural formula is cured. A bright and bright asphalt pavement surface. [Chemical 1] (In the formula, R ₁ and R ₂ may be a hydrocarbon group having 1 to 4 carbon atoms, or R ₁ and R ₂ may combine to form a ring.) 3. The bright bright asphalt pavement surface according to claim 2, wherein the blocked urethane prepolymer is a urethane prepolymer in which terminal isocyanate groups are blocked with an oxime compound. 4. The bright bright asphalt paving surface according to claim 2, wherein the polyamine compound is at least one compound selected from the group consisting of alicyclic diamines and polyoxypropylene polyamines. 5. The synthetic resin film (3) according to claim 1, wherein a resin composition comprising a polymerizable unsaturated monomer, a vinyl ester resin, an air-drying unsaturated monomer, and a polymerization initiator is cured. The bright and bright asphalt pavement surface. 6. A bright bright color asphalt paving surface, wherein the polymerizable unsaturated monomer according to claim 5 is at least one ester compound selected from the group consisting of alkyl acrylate and alkyl methacrylate. 7. A bright and bright asphalt pavement, wherein the vinyl ester resin according to claim 5 is an epoxy acrylate having a methacrylate group or an acrylate group at a molecular terminal and / or a polyester acrylate having a methacrylate group or an acrylate group at a molecular terminal. surface. 8. The polyester acrylate according to claim 7 has a methacrylate group or an acrylate group at both ends of a molecule obtained by reacting an unsaturated glycidyl compound with a saturated and / or unsaturated polyester having carboxyl groups at both ends. Bright and bright asphalt pavement surface that is an ester compound. 9. A bright bright asphalt pavement surface, wherein the air-drying unsaturated monomer according to claim 5 is obtained by introducing an air-drying component into an unsaturated polyester and / or vinyl ester resin. . 10. A bright bright color asphalt pavement surface in which the polymerization initiator according to claim 5 is an organic peroxide. 11. A bright bright asphalt pavement surface, wherein the organic peroxide according to claim 10 is benzoyl peroxide surface-treated with an inorganic powder having water of crystallization. 12. The synthetic resin film (3) according to claim 1, wherein an epoxy resin having an average of more than one adjacent epoxy groups in the molecule, a polyhydroxy compound and an excess polyisocyanate compound are contained in the molecule. Isocyanate group content having an average of more than one isocyanate group 1
10% by weight and a urethane prepolymer having an average molecular weight of 600 to 20,000 are compounds having a phenolic hydroxyl group, and NCO / phenolic hydroxyl group equivalent ratio = 1 / 1.0 to 1 /
An epoxy resin composition comprising a urea-bond-containing active organic amine curing agent obtained by reacting a blocked isocyanate compound obtained by masking with 2.0 with an active organic amino group-containing compound in excess of amine is cured. The bright and bright asphalt pavement surface. 13. A holding body (5) having a particle size of 1 to 5 mm is molded from a polycarbonate resin mixed with a masking agent (2), and glass beads (7) having a diameter smaller than that of the holding body are fixed to the surface of the holding body (5) to give a brilliant effect. A synthetic resin layer (9) by making a conductive material (4) and applying a resin composition containing a masking agent (2) to the asphalt mixture (1).
The above-mentioned glitter material is dispersed on the surface of the synthetic resin layer (9) in a viscous state, and the glitter material (3) is formed on the surface of the synthetic resin film (3) formed by curing the synthetic resin layer (9). 4) A method of constructing a bright bright color asphalt pavement surface, characterized in that it is fixed in a protruding state.