KR102328912B1 - Construction method of non-slip paving composition - Google Patents

Abstract

The present invention relates to a constructing method of an anti-skid road paving material, which comprises the steps of: applying masking tape to the road surface; applying an anti-skid road paving material; and removing the masking tape. By using the anti-skid road paving material containing hydrotalcite with intercalated fluorine ions to be used in places where the slip resistance of the road surface is low, roads that require high visibility due to poor flatness and vertical alignment of the road, intersections where there are many slip accidents, children's protection areas, and elderly protection areas, the slip resistance of the pavement surface is increased, and through this, it is possible to drive safely for drivers and to protect pedestrians and facilities.

Description

Construction method of non-slip packaging material.{CONSTRUCTION METHOD OF NON-SLIP PAVING COMPOSITION}

The present invention relates to a construction method of an anti-slip pavement material, and more particularly, a place where the slip resistance of the road surface is lowered and the flatness and vertical line of the road are poor by using an anti-slip pavement material containing a methyl methacrylate resin. A method of constructing an anti-slip pavement material that can increase the slip resistance of the pavement surface by applying it to this highly required road, intersections that are prone to slip accidents, children's protection areas, and elderly protection areas, so that drivers can drive safely and pedestrians and facilities are protected. is about

Use anti-slip pavement materials to form pavement surfaces in places with low slip resistance, roads requiring high visibility due to poor flatness and vertical alignment, intersections where slip accidents are common, children's protection areas, and elderly protection areas This increases the slip resistance of the road, which enables safe driving of drivers and the protection of pedestrians and facilities. As an anti-slip packaging material used for such pavement construction, an MMA-based packaging material containing methyl methacrylate (MMA) resin is widely used.

In order to improve the anti-slip properties in the construction of the non-slip packaging material, products with improved anti-slip packaging materials are being developed. For example, Korean Patent Publication No. 10-1094429 discloses an MMA-based packaging material containing an MMA resin including an EPS solution and a trimethylopropane trimethacrylate (TMPTMA) crosslinking agent as a main component. When installed, the construction is fast and the anti-slip effect can be maintained for a long time.

In addition, in Korea Patent Publication No. 10-1471065, MCPDCS-silica copolymer and MMA resin are included, so that when it is constructed as an MMA-based packaging material, it has excellent ductility, thermal stability, crack prevention ability and restoration power as well as anti-slip function. The durability of the product is remarkably improved, and the curing time after construction is shortened so that construction is convenient, and since heavy metals or environmental hormone-inducing substances are not added, eco-friendly MMA-based packaging materials are provided.

Looking at this prior art, it can be seen that the packaging material can be improved by adding a polymer component capable of improving physical properties in order to improve the properties of the MMA-based anti-slip packaging material.

Republic of Korea Patent Publication No. 10-1094429 Republic of Korea Patent Publication No. 10-1471065

The present invention has been devised in view of the prior art as described above, and by applying an effective anti-slip pavement to the anti-slip construction of a road, the anti-slip properties can be improved, and the visibility required on the pavement after construction can be implemented well. Its purpose is to provide a possible construction method.

The construction method of the non-slip pavement of the present invention for solving the above problems includes the steps of applying a masking tape to the road surface, applying the non-slip pavement, and removing the masking tape, the non-slip paving material is characterized in that it is a mixture of a main agent and a curing agent containing methyl methacrylate resin, ethyl acrylate monomer, 1,4-butanediol diacrylate, hydrotalcite intercalated with fluorine ions, and silica sand. .

In addition, when the road surface is concrete, the step of forming a primer layer by applying and curing a primer before performing the step of applying the anti-slip pavement material may be additionally performed.

In addition, the subject is 10 to 20 parts by weight of methyl methacrylate resin, 20 to 30 parts by weight of methyl methacrylate monomer, 10 to 15 parts by weight of ethyl acrylate monomer, 10 to 15 parts by weight of 1,4-butanediol diacrylate , 40 to 50 parts by weight of hydrotalcite intercalated with fluorine ions and 10 to 20 parts by weight of silica sand.

According to the anti-slip pavement construction method according to the present invention, since an effective anti-slip pavement material is applied to the anti-slip pavement construction of the road, the anti-slip properties can be improved, and the visibility required on the pavement surface after construction can be well realized. show the effect.

1 is a process diagram showing a method of constructing an anti-slip packaging material of the present invention.
2 is a state (a) and sectional view (b) of a construction road surface according to an embodiment using the anti-skid pavement material of the present invention, and a state (c) and sectional view (d) of a construction road surface according to another embodiment.

Hereinafter, the present invention will be described in more detail. The terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. It should be interpreted as meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

The construction method of the anti-slip packaging material according to the present invention proceeds in the same order as the conventional construction method as shown in FIG. 1 . That is, it is performed including the steps of applying a masking tape to the road surface, applying an anti-slip pavement, and removing the masking tape.

In the present invention, there is a technical feature in optimizing the anti-slip packaging material applied to the construction method. That is, the anti-slip packaging material is a mixture of a main agent and a curing agent including methyl methacrylate resin, ethyl acrylate monomer, 1,4-butanediol diacrylate, hydrotalcite intercalated with fluorine ions, and silica sand. It consists of a mixture.

That is, as shown in Fig. 2(a), the anti-slip pavement material may be applied only to a certain portion of the road surface for construction, or as shown in Fig. 2(c), the anti-slip pavement material may be applied to the entire road surface for construction. The anti-slip pavement material may be constructed to a thickness of 2.5 ± 0.5 mm, and may be applied in the same color as the pavement color of the road, and may be constructed in a separate color to increase visibility, as shown in Fig. 2(b) and As in (d), a coating film may be formed within the thickness range.

The construction method of the anti-slip packaging material will be described in detail as follows.

For the road surface that has been prepared for construction, clean foreign substances such as dust, sand, floating stones, and laitance on the road surface with an airbrush, vacuum cleaner, brush, broom, and blower. At this time, oil and oils are removed using a burner, iron brush, etc., and the surface is treated using a mechanical surface treatment machine to clean the road surface. After cleaning the road surface, check the dry condition, and if there is a wet part, dry it completely using a touch lamp and a fan.

In this way, a masking tape is attached to the cleaned road surface to determine the construction location.

An anti-slip pavement is applied here for construction. If the road surface is asphalt, the non-slip pavement can be applied immediately. However, if the road surface is concrete, a primer is installed and installed to increase the stability of the coating film, and then the anti-slip material is installed. Apply the packaging material. When installing a primer, the anti-slip packaging material should be applied to a sufficiently cured surface.

When installing a primer, a primer that satisfies the physical properties shown in Table 1 should be used.

Test Items unit Quality standards 1 type 2 types density g/mL 1.0 ± 0.10 Viscosity (25℃) mPa.s 20 or more and 300 or less housekeeping time min 25 or less VOC content % 400 or less

For the application of the anti-slip packaging material, the ratio of the main agent and the curing agent is adjusted according to the application area and the pot life, and a container of an appropriate size is selected and an amount suitable for the working conditions is mixed immediately before installation. That is, after mixing the main agent containing MMA and the curing agent according to the appropriate ratio for 3 to 5 minutes using a high-speed stirrer, the anti-slip packaging material is applied in the construction section using a spray-type equipment, a rubber roller, a special roller, etc. apply evenly to

When the anti-slip packaging material is applied and cured for a certain period of time, a coating film is formed. When completely cured, it is difficult to remove the masking tape, so the masking tape must be removed immediately after the application is completed.

In addition, it is preferable to cure through natural curing for less than 2 hours after construction of the anti-slip packaging material.

Therefore, the anti-slip packaging material must be cured within 2 hours after construction to exhibit the characteristics of the anti-slip coating film.

As described above, the non-slip packaging material includes a methyl methacrylate resin, an ethyl acrylate monomer, 1,4-butanediol diacrylate, hydrotalcite intercalated with fluorine ions, and a curing agent including silica sand. A mixture of these is used as a packaging material. It was found that when such a packaging material is used, the quality of the coating film does not change depending on the conditions of the construction site and stable quality can be secured.

More specifically, the subject is 10 to 20 parts by weight of methyl methacrylate resin, 20 to 30 parts by weight of methyl methacrylate monomer, 10 to 15 parts by weight of ethyl acrylate monomer, 10 to 15 parts by weight of 1,4-butanediol diacrylate It may include 40 to 50 parts by weight of hydrotalcite intercalated with fluorine ions and 10 to 20 parts by weight of silica sand.

In addition, as the curing agent, a curing agent commonly used may be used. That is, benzoyl peroxide, di-t-butyl peroxide, cumine hydroperoxide, t-butyl peroxy-2-ethylhexanoate, t-butyl peroxy benzoate, azobis dimethyl valeronitrile, azobis isobuty Any one of nitrile may be used, and benzoyl peroxide may be preferably used. It was found that even with such a conventional curing agent, it was possible to increase the curing speed and surface strength of the coating film after curing due to good compatibility with the subject matter according to the present invention.

In addition, when it is necessary to give a color to the constructed floor, a desired color may be realized by adding a colorant to the subject matter. In this case, the colorant is mixed in the range of 10 to 30 parts by weight. If the content of the colorant is too small, there is a problem that it is difficult to implement the color. can be

Methyl methacrylate (MMA) resin constituting the subject matter is a component widely used in flooring along with acrylic resin. It is preferable to use an ethyl acrylate monomer blended with the MMA resin, through which processability, long-term storage, curing speed when mixed with a curing agent, and physical properties can be improved, and suitable physical properties can be obtained by mixing within the above range can The content range of each component constituting the subject matter is selected in consideration of processability, long-term storage, curing speed when mixed with a curing agent, and physical properties.

In the present invention, hydrotalcite intercalated with fluorine ions is used as a filler, and when such a filler is contained, it improves dispersibility and water repellency in the construction process of the anti-slip packaging material according to the present invention, unlike commonly used fillers. It is understood that it shows the performance of suppressing the sliding phenomenon that may occur due to moisture on the road surface.

The hydrotalcite is a kind of layered double hydroxide (LDH), which can cause an acid-base reaction, and is a material used as a catalyst, a carrier, an adsorbent, an ion exchanger, and the like. The hydrotalcite may include a material having a chemical structure of [M ²⁺ _1-x M ³⁺ _x (OH) ₂ ][A ^n- ] _x/n mH ₂ ^{O, in this case, M 2+} Examples of Mg ²⁺ include Ni ²⁺ , Zn ²⁺ , and Cu ²⁺ , and M ³⁺ includes Al ³⁺ , Ga ³⁺ , Cr ³⁺ , and Fe ³⁺ , and x is It can have a value from 0.17 to 0.33. In the hydrotalcite, various kinds of anions, including carbonate anions, are inserted in the interlayer structure to perform ion exchange.

In the present invention, the interlayer structure of the hydrotalcite is ion-exchanged by substituting fluorine ions, and the hydrotalcite is used as a waterproofing agent.

Specifically, the hydrotalcite intercalated with the fluorine ion may be prepared as follows. 700 parts by weight of an aqueous solution of 40% by weight of magnesium nitrate (Mg(NO ₃ ) ₂ .6H ₂ O), 310 parts by weight of an aqueous solution of 10% by weight of sodium bicarbonate, and 40% by weight of aluminum nitrate (Al(NO ₃ ) ₃ .6H ₂ O) 45 parts by weight of an aqueous solution _{, 80 parts by weight of cryolite (Na 3} AlF ₆ ), and 40 parts by weight of sodium hydroxide were mixed with 300 parts by weight of water to prepare a dispersion, which was put into a hydrothermal synthesis reactor, and then hydrothermal reaction was performed for 1 hour. Doing so will give you a reactant. The unreacted material mixed with the reactant is washed with water to remove and dried to prepare hydrotalcite intercalated with fluorine ions. At this time, when the prepared hydrotalcite was analyzed by ICP/MS, it was found that the molar ratio of Mg/Al was 3 to 3.5. In addition, the content of fluoride ions is unknown, but when the hydrotalcite containing the fluoride ion intercalated and hydrotalcite containing carbonate are measured by XRD, the peak attributed to d ₀₀₃ appearing in the vicinity of 2θ 10.5° is the fluorine ion. It can be confirmed that fluorine ions are intercalated from the movement to the high-angle region by the exchange.

In addition, in order to improve slip resistance and abrasion resistance, silica sand having a particle size of 95% or more of particles passing through a 4.75mm mesh and 80% or more of particles remaining in a 2.36mm mesh is used, and the silica sand has a water absorption rate of 3.0 % or less and the wear rate should satisfy the physical properties of 30% or less.

In addition, 1,4-butanediol diacrylate is used as an acrylic crosslinking agent, and improves the reactivity between the MMA resin and the ethyl acrylate monomer to improve the strength after application of the anti-slip packaging material.

The subject can be prepared as follows. First, an ethyl acrylate monomer is added to a reaction tank, and a methyl methacrylate resin is added while stirring at 70 to 80° C., stirred for about 3 hours, and then cooled to room temperature to prepare a resin mixture. If silica sand, a filler, and other additives are added to the resin mixture and stirred for additional 10 to 30 minutes, the main agent can be prepared. A mixture obtained by mixing 1 to 10 parts by weight of a curing agent in the range of 1 to 10 parts by weight based on 100 parts by weight of the main agent is used as an anti-slip packaging material.

A test was conducted to evaluate the properties of the coating film by performing floor construction using the anti-slip packaging material according to the present invention.

The anti-slip packaging material contains 25 parts by weight of MMA resin, 10 parts by weight of ethyl acrylate monomer, 10 parts by weight of 1,4-butanediol diacrylate, and 43 parts by weight of hydrotalcite intercalated with fluorine ions having an Mg/Al molar ratio of 3 and 15 parts by weight of silica sand having a particle size of 95% or more of particles passing through the 4.75mm mesh and 80% or more of particles remaining in the 2.36mm mesh, and 2 parts by weight of BPO as a curing agent. In addition, the subject constituting the anti-slip packaging material showed the physical properties shown in Table 2.

Test Items unit result density g/mL 1.0 ± 0.10 Viscosity (25℃) mPa.s 20 or more and 300 or less housekeeping time min 25 or less Drying time (curing) min 60 or less VOC content g/L % 400 or less tensile strength age 1 day 20 ℃ MPa 2 or more 7 days old -10 ℃ 20 or more 20 ℃ 7 or more 60 ℃ 0.5 or more elongation 7 days old -10 ℃ % 5 or more 20 ℃ over 40 60 ℃ 50 or more

In addition, the anti-slip packaging material prepared by mixing with the curing agent showed the physical properties shown in Table 3.

Test Items unit result Drying time (solidification) min 120 or less absorption rate % 1.0 or less salt water resistance - No abnormalities such as swelling or discoloration when soaked in 3% (W/V) saline for 96 hours. impact resistance - There is no cracking or peeling phenomenon due to the impact of the weight. Adhesive strength concrete MPa 1.5 or higher asphalt 1.0 or higher Compressive strength (1 day of age) MPa 20 or more accelerated weathering - No swelling or discoloration after 300 hours of testing. wear test
(500,000 times) wear rate % 1 or less slip resistance BPN 55 or more

It can be seen that the physical properties of such an anti-slip packaging material are applicable to a non-slip packaging method as being equivalent to a type 1 anti-slip packaging material normally required.

The following test evaluation was performed using the anti-slip packaging material.

Masking tape was applied to the asphalt concrete road surface of 3 sections divided into 100m2 area. A coating film was formed by mixing a main agent and a curing agent to prepare an anti-skid packaging material, and then applying it to the divided road surface using a tandem roller. The formed coating film was cured naturally for 1 hour. All of the constructed floors exhibited a coating thickness of 2.5±0.5 mm.

When the anti-slip pavement was applied, different types of pavement were applied to the partitioned road surface. Section 1 was coated with the anti-slip packaging material of the above-described embodiment. In compartment 2, 20 parts by weight of methyl methacrylate and 10 parts by weight of 2-ethylhexyl acrylate, 15 parts by weight of methyl methacrylate resin, 40 parts by weight of silica sand mixed with No. 2 and No. 3 yarn in a volume ratio of 1:1, and average An anti-slip packaging material containing 2 parts by weight of BPO, a curing agent, was applied to 100 parts by weight of the main agent consisting of 35 parts by weight of silica having a particle size of 10 to 50 μm. In addition, in section 3, an MMA-based anti-slip packaging material of LK-NC01 standard commercially available from LK Construction Co., Ltd. was applied. The anti-skid packaging applied to compartments 2 and 3 meets both the quality standards according to Tables 2 and 3.

After taking a pre-cut part in the size of width × length × depth 200 × 200 × 20 mm from the constructed concrete floor as a specimen, it was placed in a thermo-hygrostat, and left at 60° C. for 800 hours, and then the change in physical properties was measured. In order to measure accelerated weather resistance, it was measured with an accelerated weather resistance device according to KS B 5549, and the wear rate was evaluated under the conditions of CS-17, 1 kg, and 1,000 cycles according to ASTM D 4060. In addition, a peel test was performed to evaluate the adhesion state of the surface.

As a result, after 800 hours, the wear state of section 2 was 32 mg, and the wear state of section 3 was found to be 40 mg, but when the non-slip packaging material of the present invention was applied, the wear state was found to be 22 mg. appeared to be in the best condition.

In addition, as a result of evaluating the sliding resistance performance according to KS F 2375, the sliding resistance performance of 79, 76, and 78 for divisions 1, 2, and 3 were respectively shown, but after 800 hours, for divisions 1, 2, and 3, It was confirmed that the sliding resistance performance of 77, 69, and 71 were respectively exhibited. These results indicate the tendency of the anti-skid performance to be maintained for a long time in the construction to which the anti-slip packaging material of the present invention is applied.

In addition, as a result of measuring the abrasion rate after 6 months of the thickness during construction of Sections 1, 2, and 3, Section 1 was 2.8%, Section 2 was 4.4%, and Section 3 was 4.3%, with Section 1 being the most It was found to exhibit excellent surface durability.

Therefore, it was confirmed that the anti-slip construction method of the present invention can provide relatively excellent quality anti-slip construction.

The right of the present invention is not limited to the embodiments described above, but is defined by what is described in the claims, and a person of ordinary skill in the art can make various modifications and adaptations within the scope of the claims. it is self-evident

Claims (3)

applying masking tape to the road surface;
applying an anti-slip packaging material;
removing the masking tape;
In the construction method of the non-slip packaging material comprising a,
The anti-slip packaging material includes 25 parts by weight of methyl methacrylate resin, 10 parts by weight of ethyl acrylate monomer, 10 parts by weight of 1,4-butanediol diacrylate, 43 parts by weight of hydrotalcite intercalated with fluorine ions, and It is a mixture of a main agent and a curing agent containing 15 parts by weight of silica sand,
The hydrotalcite intercalated with the fluorine ion is 40% by weight of an aqueous solution of magnesium nitrate (Mg(NO ₃ ) ₂ .6H ₂ O), 700 parts by weight, 10% by weight of an aqueous sodium hydrogencarbonate solution, 310 parts by weight, and 40% by weight 45 parts by weight of an aqueous solution of aluminum nitrate (Al(NO ₃ ) ₃ .6H _{2 O), 80 parts by weight of cryolite (Na 3} AlF ₆ ), and 40 parts by weight of sodium hydroxide were mixed with 300 parts by weight of water to prepare a dispersion, and the dispersion was hydrothermal A method of constructing an anti-slip packaging material prepared by performing a reaction, characterized in that the molar ratio of Mg/Al is 3.
The method according to claim 1,
Before performing the step of applying the non-slip packaging material, the construction method of the non-slip packaging material, characterized in that the additional step of forming a primer layer by applying and curing the primer.
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