JP3383937B2 - Coating method for open pavement - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for coating an open grain pavement, and more particularly to a method for coating a porous pavement having a drainage function, and more particularly, a void portion of the pavement having a drainage function. The present invention relates to a pavement coating method for reducing the adhesion of dust or earth and sand to the surface of a pavement.

[0002]

2. Description of the Related Art A porous pavement is a pavement adjusted to have a large number of voids in the pavement. The pavement is a drainage pavement that drains rainwater to shoulders and the pavement is an infiltration channel. There is a water-permeable pavement that allows rainwater to penetrate below the roadbed.
These pavements prevent the formation of a water film on the road surface, have the function of mitigating water splashes and splashes, increasing the visibility of the driver, and suppressing the hydroplaning phenomenon. Since the void has a sound absorbing property, it is an excellent pavement having a function of suppressing the contact noise between the tire and the road surface and reducing the traffic noise.

Due to this feature, porous pavements, especially drainage pavements, have become widespread. On the other hand, drainage pavements have a problem that their excellent functions cannot be maintained for a long period of time. . The voids that function as a drainage pavement will be gradually blocked by scattering of aggregates due to the load of the traveling vehicle, wear and consolidation, as well as the inflow of dust and earth and sand, which eventually impairs the drainage function and noise reduction function. Have the problem of being

To solve this problem, the function of recovering the function of removing dust or earth and sand clogged in the voids is generally performed.
Since the conventional drainage pavement deteriorates in function at an early stage, it is necessary to frequently perform this function recovery, which consumes a lot of labor and time, and also causes traffic congestion.

As one of methods for maintaining the function of the drainage pavement for a long period of time, there is known a method of applying a resin on the surface of the drainage pavement (Japanese Patent Laid-Open No. 5-222705). However, this method does not drastically suppress the clogging of dust and earth and sand, and only reduces the scattering of aggregates on the surface of the drainage pavement, and reduces the frequency of work to restore the function of the drainage pavement. It hasn't arrived yet.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to prevent the formation of a fixed layer of dust or earth and sand in the voids of a porous pavement, especially a drainage pavement, and to improve the function of the drainage pavement for a long time. The object of the present invention is to provide a coating method that maintains the above-mentioned value and facilitates the function recovery work.

[0007]

The present inventors have completed the present invention as a result of earnest researches aimed at solving such problems. That is, according to the present invention, a resin liquid is sprayed on the surface of an open pavement, and before the sprayed resin liquid forms a film , the spraying air is blown onto the surface of the pavement by a mechanical device.
While the air amount is temporally intensity variation by blowing air is dispersed in mist in the void portion of the pavement body the tree <br/> fat solution, the resin solution surface and the pavement gap portion of the pavement Provided is a coating method for an open pavement characterized by forming a film on the surface, preferably a coating method for an open pavement, wherein the open pavement is a porous pavement for drainage pavement. To do.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The open grain pavement of the present invention is constructed by paving a mixture containing a binder and an aggregate as an essential composition so that the porosity is preferably 3 to 30%. is there.

The binder is, for example, straight asphalt, modified asphalt, high viscosity modified asphalt, natural asphalt, asphalt emulsion, cement,
Lime, synthetic resins and natural resins are used. As the aggregate, a coarse aggregate, a fine aggregate and a filler produced from natural stone, artificial stone, waste, rubber, plant material, iron, calcinated product and moving material are used. The porous pavement means a pavement having a porosity of more than 10%. In the drainage pavement, it is common to use a high viscosity modified asphalt as a binder.

For the purpose of coloring the pavement, the resin liquid of the present invention is, for example, a paint such as an acrylic resin, an epoxy resin, a polyurethane resin or a vinyl acetate emulsion, which is particularly useful for drainage pavement. For the purpose of maintaining the function of the body, a radical cross-linking resin composition having a high solid content and liquid at room temperature described below is used.

The room temperature liquid radical crosslinkable resin composition of the present invention is preferably one having a low viscosity, a long pot life, and no property of dissolving asphalt. The asphalt insolubility is obtained by using a (meth) acrylic unsaturated monomer as a main component as the polymerizable unsaturated monomer. It is preferable that the composition has good adhesion to asphalt when it becomes a cured product, has low chargeability of the cured product, and reduces adhesion of dust and the like. The high solid content is preferably a radical cross-linking resin (A) 50 to 8
A resin composition comprising 0% by weight and 20 to 50% by weight of the polymerizable unsaturated monomer (B), the initial viscosity of the composition being 1 to 1
It is characterized by 0 poise (25 ° C.), a curing time of 30 minutes or less, and a Shore D hardness of 60 or more. If the initial viscosity is outside this range, it is difficult to sufficiently coat the surface of the voids, and the Shore D hardness of the cured product is 6
If it is less than 0, the dust adhesion resistance is not exhibited.

The radical crosslinkable resin (A) is preferably a vinyl ester resin, and examples thereof include unsaturated polyester (meth) acrylate resins, epoxy (meth) acrylate resins, urethane (meth) acrylate resins and mixtures thereof. Is mentioned. These are used in a liquid composition of a polymerizable unsaturated monomer.

[0013] The unsaturated polyester (meth) acrylate resin, alpha, two containing β- unsaturated dibasic acid bases acids and polyhydric alcohols - Le acids, by the condensation reaction of the dicyclopentadiene-based compound required The unsaturated polyester obtained is reacted with a (meth) acrylic compound. If necessary, monobasic acids, monohydric alcohol, may be used monoepoxy compounds. Preferably the number average molecular weight is 50
It is a product obtained by reacting a (meth) acrylic compound with an unsaturated polyester terminal in the range of 0 to 5000.

The epoxy (meth) acrylate resin is
It is a resin obtained by reacting a bisphenol type epoxy resin alone or a resin obtained by mixing a bisphenol type epoxy resin and a novolak type epoxy resin with an unsaturated monobasic acid in the presence of an esterification catalyst.

The urethane (meth) acrylate resin of the present invention is preferably obtained by reacting a polyisocyanate with a polyol such as polyether polyol, polyester polyol, polybutadiene polyol and a hydroxyalkyl (meth) acrylate compound,
For example, it is a resin obtained by reacting polyisocyanate obtained by reacting polypropylene glycol and tolylene diisocyanate (TDI) at a molar ratio of 1: 2 and 2-hydroxyethyl methacrylate at a molar ratio of 1: 2.

In the resin composition of the present invention, the air-drying imparting polymer (A2) is preferably used in combination as the resin component (A).
At that time, the nonvolatile content (resin solid content) is preferably 50 to
It is 80% by weight. If it is out of this range, the reinforcing effect of the drainage pavement layer will not be sufficient.

The air-drying imparting polymer (A2) of the present invention is a polymer prepared by introducing an air-drying component into the unsaturated polyester, vinyl ester resin or the like. The air-drying component includes the following known components. A glycol component, a combination of compounds containing allyl ether groups represented by _{-0-CH 2 -CH = CH 2} . A compound containing a cycloaliphatic unsaturated polybasic acid and its derivative is used in combination with the acid component. A compound containing dicyclopentadiene is used in combination. Drying oil and epoxy reactive diluent are used together.

The mixing ratio of the vinyl ester resin (A1) and the air-drying imparting polymer (A2) is such that the weight ratio of (A1) / (A2) is (A1) / (A2).
It is preferable that 1) :( A2) = 99: 1 to 50:50 (parts by weight). When the amount of the component (A2) is more than 50, properties such as tensile strength, tear strength, water resistance and wet heat resistance of the resin cured product deteriorate.

The polymerizable unsaturated monomer (B) used in the present invention is an acrylic unsaturated monomer such as an acrylic acid ester or a methacrylic acid ester as a main component, and is an acrylic unsaturated monomer that can be crosslinked with a resin. Examples thereof include saturated monomers and acrylic unsaturated oligomers. The styrene monomer used in the unsaturated polyester resin has high asphalt solubility and is not suitable for use in the present invention. However, they can be used in combination to the extent that the effects of the present invention are not impaired. The amount of the styrene monomer used is preferably 30 parts by weight or less based on 100 parts by weight of the solid content of the resin (A).

The radical crosslinkable resin composition of the present invention preferably contains a curing agent in order to accelerate the curing, and examples of the curing agent include organic peroxides. Specific examples of organic peroxides include diacyl peroxide-based, peroxyester-based, hydroperoxide-based, dialkyl peroxide-based, ketone peroxide-based, peroxyketal-based, alkylperester-based, percarbonate-based, etc. The following are listed.

The addition amount of the curing agent is preferably 10 in total of the radical crosslinkable resin (A) and the polymerizable unsaturated monomer (B).
It is 0.1 to 6 parts by weight with respect to 0 parts by weight. You may use the said hardening | curing agent in combination of 2 or more types.

The radical crosslinkable resin composition of the present invention comprises
It is also preferable to include a curing accelerator, and examples of the curing accelerator include metal soaps such as cobalt naphthenate (I
I), cobalt (II) octylate, zinc octylate and the like, and examples of the metal chelate compound include vanadium acetyl acetate and cobalt (II) acetyl acetate. Examples of amines include known ones such as aniline and N, N-dimethylaniline.

The amount of the curing accelerator added is preferably 0.1 to 100 parts by weight of the radical crosslinkable resin (solid content).
Use 5 parts by weight. In the present invention, amine-based accelerators are preferred. The curing accelerator may be added to the resin in advance, or may be added at the time of use.

It is preferable to add a polymerization inhibitor to the resin composition of the present invention. As the polymerization inhibitor, trihydrobenzene, hydroquinone, 1,4-naphthoquinone, parabenzoquinone, tolhydroquinone, hydroquinone monomethyl ether. , P- (tert-butyl) catechol, 2,6-di (tert-butyl) -4-methylphenol and the like. The amount used is 10 to 10 in the composition.
1000 ppm is preferred.

A wax is preferably added to the resin composition of the present invention in order to improve the air-curability of the resin surface. As the wax, a paraffin wax and / or a polar wax can be used alone or in combination. The polar wax has a polar group and a non-polar group in its structure. , Emanone 3199, 3299 (manufactured by Kao Corporation), Rikemar S-71-D, S-200 (RIKEN VITAMIN Co., Ltd.)
Manufactured), NPS-8070, NPS-9125, OX-W
Examples include compounds such as EISSEN-8 (manufactured by Nippon Seiro Co., Ltd.) and Diakarna PA-30 (manufactured by Mitsubishi Chemical).

The amount of the wax added is 10 in total of the radical crosslinkable resin (A) and the polymerizable unsaturated monomer (B).
0.1 to 5 parts by weight, preferably 0.2
~ 2.0 parts by weight are used.

The paint or the resin composition may be sprayed on the pavement by a spraying method, a casting method, or a pouring method. When the surface of the void portion of the pavement is coated with a resin, spraying is performed. The method is good. The amount of spraying may be appropriate, but in the case of a drainage pavement having a thickness of 5 cm, it is 0.5 to 4 kg / m ² , preferably 0.
It is 7 to ² kg / m ² .

In the present invention, after spraying the resin liquid, air is blown onto the surface of the pavement by a mechanical device such as an air compressor or a blower before the resin liquid forms a film. After spraying, the resin liquid remains in the surface of the pavement or in the voids near the surface, but when the air is blown, the resin liquid disperses in a mist state and the resin also enters the internal voids where natural permeation is difficult and It will adhere to the surface and be coated.

The air is blown while the resin liquid does not form a film, and it is not necessary to continue until the resin liquid hardens, but the time from the spraying of the resin liquid to the air blowing is preferably within 10 minutes. . 1-10 poise (25 ℃)
When spraying a resin liquid having a viscosity of 0.
It is preferably 5 to 6 m ³ / m ² , and the maximum value of the blowing wind speed is preferably 8 to 60 m / sec, more preferably 10 to 40 m / sec on the pavement surface. In particular, at a discharge wind speed of less than 8 m / sec, the effect of dispersing the resin liquid is small.

As the nozzle shape for blowing air, various cross-sectional shapes such as a circle, an ellipse, an egg, a rectangle, and a polygon can be used (see FIGS. 1 to 5). The width of the nozzle must be set so that the target wind speed can be obtained.
It is preferably m to 4 mm. In the slit-shaped nozzle, a rectifying partition may be provided inside the nozzle to make the wind velocity uniform (see FIG. 6), or a rectifying protrusion or groove may be provided. It is desirable that the air is blown substantially vertically to the surface of the pavement, but if it is difficult to adjust the air volume, the nozzle mounting angle may be adjusted. Further, To include putting atomized liquid resin in the void part of the pavement body, it is that the pressure of the air gap portion is so cause variation in a plurality of times. The method is to change the amount of air blown with time.

The resin liquid adhering to the surfaces of the voids forms a film and cures to complete the coating. The coating amount of the resin liquid is preferably 0.01 to 1.
2 kg / m ^2, the resin composition for spraying the drainage pavement, preferably 0.01~1.5kg / m ^2, and more preferably from 0.01 to 1 kg / m ^2.

The drainage performance of the drainage pavement can be represented by a constant water level permeability coefficient. Usually, the constant water level hydraulic conductivity of the drainage pavement during new paving is 1 to 0.01 cm / sec, and the constant water level hydraulic conductivity in a clogged state is smaller than 0.01 cm / sec. When it becomes clogged, function recovery work is performed by washing with high pressure water. The initial constant water level hydraulic conductivity of the drainage pavement of the present invention is 0.2 to 0.6 cm / sec, but even if the constant water level hydraulic conductivity decreases to about 0.005 cm / sec, the constant water level hydraulic conductivity can be maintained by washing. Recovers to almost the initial state.

FIG. 8 is a conceptual diagram of a resin coating machine used in the present invention. A resin liquid tank A3 and the resin solution (hardener) tank B4 Prefecture, resin liquid sent to the resin solution spray nozzle 11 via a valve 14 are mixed in the nozzle 11, the valve 14 is generated by the electric compressor 5
Is blown to the road surface together with the air sent through.

FIG. 9 is a plan view and a side view of a self-propelled mechanical device for carrying out the present invention. This is to generate air on a self-propelled machine such as an automobile by the coating machine device and the engine type compressor 6 shown in FIG. 8, and blow the air from the air nozzle 1 to the road surface through the air pipe 7 and the air valve 13. Since this spraying is performed immediately after spraying the resin liquid, it is preferable that the air nozzle 1 and the resin spray nozzle 11 are adjacent to each other.

[0035]

[Examples] The effect of spraying air on a drainage pavement after spraying a radically crosslinkable resin composition (hereinafter referred to as a resin solution) having a high solid content and a liquid at room temperature will be described.
Marshall specimens of drainage pavement with a target porosity of 25% (10 cm × 10 cm × 6.5 cm, compacted on both sides 50 times) were prepared, and specimens that do not spray resin solution, just sprayed resin solution Specimen (resin liquid spray amount 0.3,
0.6, 0.9, 1.2 kg / m ² ), and immediately after spraying the resin liquid, a test piece was treated with a wind speed of 20 m / sec for 2 seconds, 5 seconds, and 20 seconds (resin liquid spraying rate was 0. 3, 0.6,
0.9, 1.2 kg / m ² ) was prepared. For spraying the resin liquid, the Marshall specimen was dried at 90 ° C. for 6 hours and left at room temperature for 6 hours.

The composition of the Marshall specimen is 85 crushed stone No. 6
% (Aggregate weight ratio), No. 7 crushed stone 8% (same), coarse sand 4%
(Same), stone powder 3% (same), asphalt 4.6% (weight ratio), high-viscosity modified asphalt binder (manufactured by Nippon Oil Co., Asphalt Ecofalt TA, Penetration 58,
A softening point of 93.5 ° C. and a viscosity of 60 ° C. of 100 × 10 ⁴ ps or more) were used.

As for the radical crosslinking resin composition which is liquid at room temperature, the vinyl ester resin composition is 60% by weight, the air-drying unsaturated polyester resin composition is 25%, 6% cobalt naphthenate is 0.5% by weight, and 135 ° F paraffin is used. It was obtained by mixing 0.2% by weight of wax and 0.4% by weight of N, N-dimethylparatoluidine. The vinyl ester resin composition comprises 138 g of an epoxy resin (Epiclon 860 manufactured by Dainippon Ink and Chemicals, Inc.) and bisphenol A113.
g of bisphenol type vinyl ester resin obtained by heating and reacting 273 g of methacrylic acid with a conventionally known method.
It was obtained by dissolving in MA (methyl methacrylate) (nonvolatile content: 75%). Further, the air-drying unsaturated polyester resin composition comprises triethylene glycol 431 g, diethylene glycol 305 g, phthalic anhydride 255 g, PMA.
A (1,2,3,6-tetrahydro-3-methyl-phthalic anhydride) (477 g) and maleic anhydride were heated, dehydrated and condensed by a conventionally known method to obtain an air-drying unsaturated polyester, which was dissolved in 500 g of MMA. Obtained (nonvolatile matter 75%).
The physical properties of the radical-crosslinking resin composition that was liquid at room temperature were a nonvolatile content of 64%, a viscosity of 3.0 ps (25 ° C.), and a curing time of 12 minutes.

The air was blown by adjusting compressed air with a discharge air velocity of 20 m / sec and an air volume of 0.188 m ³ / min with an air compressor, and a nozzle (a circular pipe with an inner diameter of 10 mm) was vertically moved upward from the surface of the specimen. The sample was rotated by swirling along the surface of the specimen while being separated by 3 cm.

To the Marshall specimen not coated with the resin solution and the Marshall specimen coated with the resin solution, muddy water prepared by suspending 80 g of black soil of 600 mesh or less with 400 cc of water was poured. The muddy water that had permeated the sample was once again tried to be completely clogged up to the upper surface of the sample. Specimens impregnated with mud in the air gap and dried at 60 ° C. 24 hours, black soil remaining on the top surface was created clogging specimen dropped with a brush.

After a pressure difference of 50 cm was applied to the clogged sample at a water head of 50 cm, 200 cc of saturated sodium bicarbonate aqueous solution was permeated into the sample, and sodium bicarbonate and an equivalent amount of oxalic acid aqueous solution were sprayed to generate bubbles. Then, the clogged soil was washed. The constant water permeability of the sample is measured after the Marshall sample is prepared, and for the sample sprayed with the resin solution, after coating the resin solution, after creating the clogged sample, after applying a differential pressure of 50 cm to the head, and after washing. It was

The water permeability after coating with the resin liquid is expressed as a percentage with respect to the constant water permeability coefficient when the Marshall sample is prepared, which is 100% for the sample not sprayed with the resin liquid,
Specimens that have just been sprayed with the resin solution are
m ²⁾ 0.3,0.6,0.9,1.2 becomes 84,79,62,40% respectively, specimens sprayed amount of blown air was sprayed resin solution (kg / m ² )
For 0.3, 0.6, 0.9 and 1.2, 92, 81, 69, 58% for a spray time of 2 seconds, 94, 83, 75, 65% for a spray time of 5 seconds, and a spray time It was 94, 85, 77 and 67% in 20 seconds. It was found that the test piece that had been sprayed with air had a higher hydraulic conductivity after painting than the test piece that had just been sprayed with resin liquid. It is considered that this was because the coating was uniformly dispersed in the voids of the above and cured to obtain a relatively uniform coating. In the specimen without air blowing, the resin liquid permeates only into the voids near the upper surface of the specimen, so that the resin coating film formed in this portion becomes thick and the water-passing ability of the entire specimen also decreases. It can be said that the spraying time of 5 seconds and the spraying time of 20 seconds are effective for dispersing the resin liquid.

The constant water permeability coefficient (cm / sec) after preparation of the clogged sample was set at 0.01 cm / sec, but it was 0.008 cm / sec for the sample not sprayed with the resin solution. The test sample that has just been sprayed with
m ² ) 0.3, 0.6, 0.9, 1.2, respectively 0.017, 0.022, 0.019, 0.009
cm / sec, and the test sample sprayed with air after spraying the resin solution had a spray rate (kg / m ² ) of 0.3, 0.6, 0.
9 and 1.2, 0.016, 0.020, 0.023, 0.015 cm at a spraying time of 2 seconds
/ Sec, 0.020, 0.035 at 5 seconds spray time,
0.033, 0.027 cm / sec, 0.017, 0.028, 0.032, 0.030 at 20 seconds spraying time
cm / sec. From these, it can be seen that the test piece coated with the resin liquid is less likely to be clogged than the test piece not coated with the resin liquid.
It can be seen that not easily sprouting clogging of the specimen was allowed to act wind speed in specimens coated with the resin solution.

The water permeability after washing is expressed as a percentage with respect to the constant water permeability coefficient when the Marshall sample was prepared, and it was 24% in the sample not sprayed with the resin solution, and the amount sprayed in the sample just sprayed with the resin solution. (Kg / m ² ) 0.3, 0.
44, 54, 4 for 6, 0.9, 1.2 respectively
6, 40%, and the test sample sprayed with air after spraying the resin solution had a spray rate (kg / m ² ) of 0.3, 0.6,
0.9, 1.2 respectively, 50, 60, 52, 54% at 2 seconds spraying time, 6 at 5 seconds spraying time
0, 67, 75, 63%, 5 at a spraying time of 20 seconds
It became 6, 67, 75 and 67%.

The above water permeability is expressed by the water permeability coefficient recovery rate (expressed as a percentage after resin liquid coating).
It was 24% for the specimens not sprayed with the resin liquid, and the sprayed amount (kg / m ² ) was 0.
51, 6 for 3, 0.6, 0.9, 1.2 respectively
8, 75, 100%, and the test sample sprayed with air after spraying the resin liquid has a spray rate (kg / m ² ) of 0.3,
0.6, 0.9, 1.2, 54, 74, 75, 93%, and a spray time of 5 at 2 seconds of spray time, respectively.
63, 81, 100, 97% in seconds, spray time 20
It was 59, 80, 98, 103% in seconds, and the clogging sample coated with the resin liquid had a constant hydraulic conductivity of more than 0.01 cm / sec and the clogging was slight, but only the spraying of the resin liquid However, it was revealed that excellent recoverability was exhibited, and it was also revealed that the combined use of air blowing was more effective.

[0045]

EFFECTS OF THE INVENTION A resin liquid is sprayed on a pavement surface, and then air is blown onto the pavement surface to allow the resin liquid to penetrate into the voids of the pavement while the sprayed resin liquid does not form a film. By forming a coating film on the surface of the body and the surface of the pavement voids, it is possible to coat the surface of more voids as compared with the method of only applying and permeating the resin liquid. It is possible to reduce the amount of resin liquid used when imparting color. Also,
It is possible to coat the surface of the voids in the deep pavement with resin liquid that prevents the adhesion of dust and earth and sand to the porous pavement such as drainage pavement, improving the clogging resistance of drainage pavement. As a result, it became possible to maintain the long-term function of the drainage pavement.

Since the function of the drainage pavement is maintained for a long period of time, it is possible to prolong the operation cycle of the function recovery work of the drainage pavement for removing the clogging substances, and to significantly reduce the road surface maintenance work amount. Furthermore, in the function recovery work, the surface of the void part of the drainage pavement is coated with resin liquid, so it is extremely easy to remove the clogging substances, and the work speed of the function recovery work vehicle can be increased. Therefore, it is possible to reduce traffic congestion and provide a safe working environment for workers.

[Brief description of drawings]

FIG. 1 is an example of a nozzle shape according to the present invention.

FIG. 2 is also an example of a nozzle shape.

FIG. 3 is also an example of a nozzle shape.

FIG. 4 is a side view of an example of the same nozzle shape.

FIG. 5 is a side view of an example of the same nozzle shape.

FIG. 6 is a plan view and a side view of an example of a nozzle shape.

FIG. 7 is a plan view and a side view of an example of a nozzle shape.

FIG. 8 is a conceptual diagram of a mechanical device for carrying out the coating of the present invention.

FIG. 9 is a plan view and a side view of a self-propelled mechanical device for carrying out the present invention.

[Explanation of symbols]

1: Air nozzle 1-2: Partition for rectification 1-3: Air flow 2: trolley 3: Resin liquid tank A 4: Resin liquid tank B 5: Electric compressor 6: Engine type compressor 7: Air piping 8: Airflow meter 9: Driver's seat 10: Generator 11: Resin liquid spray nozzle 12: Road surface 13: Air valve 14: Valve

─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Masaaki Sunada 3-16-203 Mizuo, Ibaraki-shi, Osaka Nichimo Green Town 8th Building (72) Inventor Toshio Mita 154,5 Okayama-cho, Kishiwada-shi, Osaka (72) Invention Shinya Ueno 1-5-8-402 Tomobuchi-cho, Miyakojima-ku, Osaka-shi, Osaka (56) References JP-A-8-253709 (JP, A) JP-A-5-222705 (JP, A) JP-A 11- 33413 (JP, A) JP 9-224807 (JP, A) JP 7-150582 (JP, A) Special table 10-500184 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) E01C 5/00-15/00

Claims (2)

(57) [Claims] 1. A spray of resin liquid on the surface of an open pavement, and before the sprayed resin liquid forms a film, the amount of air blown on the surface of the pavement is increased by a mechanical device.
While weak varied by blowing air is dispersed in mist in the void portion of the pavement body the resin solution, the resin solution opens, characterized in that to the film formed on the surface of the surface and the pavement gap portion of the pavement Method for coating granular pavement. Wherein Hirakitsubu pavement is coating methods open grain pavement according to claim 1, characterized in that the drainage paving porous pavement.