KR100966791B1 - Pavement method - Google Patents

Abstract

PURPOSE: A method for paving a road using a skid-proof polymer cement paste composite with water retentivity and semi-rigidity is provided to remarkably reduce maintenance costs by using a polymer cement paste composite for a long time. CONSTITUTION: A method for paving a road using a skid-proof polymer cement paste composite with water retentivity and semi-rigidity is as follows. An asphalt concrete mixture is spread and is hardened(S18). A skid-proof color polymer cement paste composite is injected into the asphalt concrete mixture(S16). Silica or silica glass is scattered in the asphalt concrete(S15). The skid-proof color polymer cement paste composite is re-injected to the asphalt concrete mixture(S14). The asphalt concrete mixture is cured.

Description

Road paving method using anti-slip color polymer cement paste composition having anti-stiffness and water retention property {PAVEMENT METHOD}

The present invention relates to a road pavement method using an anti-slip color polymer cement paste composition having semi-rigidity and water retention. More specifically, in the case of new road construction, the asphalt concrete laying and compacting step having a 15-30% porosity Composition of the non-slip color polymer cement paste having anti-stiffness and water retention, and having the anti-stiffness and water retention after spraying with silica sand or silica glass having a particle size of 5-20 mesh The second step is to inject the composition of the non-slip color polymer cement paste, the curing step after the injection is completed, and the coating step of the surface coating coating for strengthening the surface as necessary after curing, and to coat the existing asphalt concrete or cement concrete When the surface cleaning step of the original asphalt concrete or cement concrete, binder Coating step, coating step of composition of anti-slip color polymer cement paste having anti-stiffness and water-retaining property mixed with silica sand of 5 ~ 20 mesh, curing step after coating and curing as needed The present invention relates to a road pavement method using an anti-slip color polymer cement paste composition having anti-stiffness and water retention, which is made of a coating step of a top coat for a surface reinforcement.

Conventional paving methods for road pavement are concrete and asphalt bars, and asphalt is a paving method with flexibility. Recently, atmospheric temperature rises due to warming, resulting in long-term high temperature and heavy traffic and traffic congestion. Due to the plastic deformation of the asphalt road pavement, the pavement is frequently damaged and the pavement life is shortened. Therefore, the maintenance cost of the road increases, and the heat island phenomenon occurs due to the temperature rise of the pavement due to long-term high temperature. There is a disadvantage in that the discomfort increases during road driving and walking by. In addition, in the case of color asphalt pavement, color pigments and discoloration are promoted by heating colored pigments together in the manufacture of asphalt mixture, and flows by softening of asphalt occur in summer, resulting in wheel marks and contaminants caused by stickiness of pavement surface. As it is attached, the discriminating power is reduced and it is vulnerable to plastic deformation, so the discriminating power is decreased over time and the risk of accidents due to the deformation of the road increases, which requires frequent repairs, resulting in inconvenience due to traffic interference and maintenance costs. There was a lot of difficulty in management.

On the other hand, rigid color road pavement has the advantages of excellent durability, but there is a limit that the color expression power is significantly reduced in addition to the disadvantages that the bending performance can be cracked on the road and a lot of dust and noise occurs.

Therefore, it is a reality that there is a need for a semi-rigid paving material that can contribute a lot to the durability and economical efficiency of the pavement by securing the flow resistance of the conventional pavement and long life of the pavement. In addition, for environmentally friendly road pavement, water retention should be provided, and the polymer cement paste excellent in bending property, coloration property, and adhesiveness is urgently needed by improving disadvantages of color pavement materials.

In addition, in the case of conventional polymer cement pastes, color pigments were used as they are, so color development was not continued, discoloration and discoloration were more severe, and injection and painting could not be used in parallel. Due to the large number of processes by spraying, the work was inconvenient. In the present invention is excellent in color, causing the driver's alert, high friction, can be stopped quickly in the event of an accident, it is suitable for use in pavement such as crosswalks, intersections, school zones or accidents around the school, durable It can be applied to roads with heavy traffic, especially roads with heavy vehicles, and can be used by replacing only emulsions for injection and painting, and reducing the process by mixing silica sand directly in the field. Workability can be improved.

In order to solve the problems of the prior art as described above, the anti-slip color polymer cement paste having anti-stiffness and water retention (durability) according to the present invention and the road paving method using the same,

Laying step of laying and compacting the asphalt concrete mixture; An injection step of injecting an anti-slip color polymer cement paste composition having semi-rigidity and water retention property into the asphalt concrete which has undergone the laying step; A spraying step of spraying silica sand or silica glass on the asphalt concrete which has been injected; A reinjecting step of injecting an anti-slip color polymer cement paste composition having anti-stiffness and water retention into the asphalt concrete that has been sprayed; Curing step of curing the asphalt concrete that has undergone the re-injection step.

It is preferable to have a coating step of coating the top coat coating agent for surface reinforcement on the asphalt concrete undergoing the curing step.

The top coat coating agent for surface hardening is methyl methacryl-based acrylic emulsion (Tg value of 15 to 25 ℃, resin dispersion 55% by weight of dispersing aqueous solution) 88 ~ 94.3% by weight, dispersed ink 5-10% by weight, thickener 0.5-1.0 It is preferable that they are 0.1 weight%, an antifoamer 0.1-0.5 weight%, and a dispersant 0.1-0.5 weight%.

The asphalt concrete mixture is made of a mixture of modified asphalt, coarse aggregate, fine aggregate, and filler, and has a porosity of 15 to 30% to easily inject a non-slip color polymer cement paste composition having anti-stiffness and water retention. It is desirable to have.

The anti-slip color polymer cement paste composition having semi-rigidity and water retention is composed of a two-part type fast cement and an acrylic polymer dispersant for injection, and the fast cement and an acrylic polymer dispersion for injection are weight ratio 100. It is preferable to mix in a ratio of 40-40.

The fast cement type is, one kind of ordinary portland cement 35-50% by weight, lithium carbonate 0.5-1.0% by weight, calcium sulfo aluminate fastening material 30-50% by weight, calcium sulfo aluminate expanding material 3-5% by weight, 10-20% by weight of silica sand, 0.1-1.0% by weight of a coagulation delay agent, 0.1-1.0% by weight of a high softening agent, and 0.1-1.0% by weight of a powder defoaming agent. The injection-type acrylic polymer dispersion is a methyl methacryl-based acrylic emulsion. (Tg value 5-10 degreeC, dispersion aqueous solution of 45 weight% of resin) 88.5-94.7 weight%, 5-10 weight% of inks which disperse | distribution completed, 0.1-0.5 weight% of thickeners, 0.1-0.5 weight% of antifoamers, 0.1- dispersant It is composed of 0.5% by weight, the silica sand or silica glass is preferably a particle size of 5 to 20 mesh.

In order to solve the problems of the prior art as described above, a non-slip color polymer cement paste having a semi-rigidity and water retention according to the present invention and a road pavement method using the same,

A chipping step of roughly chipping the surface of the existing asphalt concrete or cement concrete road; A binder coating step of applying a binder on the road after the step of chipping; A mixing step of mixing the anti-slip color polymer cement paste composition and silica sand having semi-rigidity and water retention; A painting step of coating the mixture through the mixing step on the road through the binder coating step; Curing step of curing the asphalt concrete after the coating step; has.

It is preferable to have a coating step of coating the top coat coating agent for surface reinforcement on the asphalt concrete undergoing the curing step.

The top coat coating agent for surface hardening is methyl methacryl-based acrylic emulsion (Tg value of 15 to 25 ℃, resin dispersion 55% by weight of dispersing aqueous solution) 88 ~ 94.3% by weight, dispersed ink 5-10% by weight, thickener 0.5-1.0 It is preferable that they are 0.1 weight%, an antifoamer 0.1-0.5 weight%, and a dispersant 0.1-0.5 weight%.

The mixture of the mixing step is made of fast-hardening cement, acrylic polymer dispersion for painting, and silica sand, and mixed with the fast-hardening cement, acrylic polymer dispersion for injection and silica sand in a weight ratio of 100: 40-50: 55-65. Is preferred.

The fast cement type is, one kind of ordinary portland cement 35-50% by weight, lithium carbonate 0.5-1.0% by weight, calcium sulfo aluminate fastening material 30-50% by weight, calcium sulfo aluminate expanding material 3-5% by weight, 10-20% by weight of silica sand, 0.1-1.0% by weight of coagulation retardant, 0.1-1.0% by weight of high fluidizing agent, 0.1-1.0% by weight of powder defoamer, and the acrylic polymer dispersion for coating is methyl metaacrylic acrylic emulsion. (Tg value 5-10 ° C, dispersion aqueous solution of 60% by weight of resin) 84-93.8% by weight, 5-10% by weight of dispersed ink, thickener 1-5%, defoamer 0.1-0.5%, dispersant 0.1- It is composed of 0.5% by weight, the silica sand is preferably a particle size of 5 ~ 20 mesh.

As described above, according to the present invention, the non-slip color polymer cement paste having anti-stiffness and water retention properties and the road pavement method using the same have excellent workability and high frictional force, which is advantageous for rapid braking, so that bus stops and roads can be used. When used in roads, intersections, etc., it can produce an effect that can prevent accidents. In addition, it is excellent in brightness, does not discolor, and implements various colors, so it is excellent in preventing accidents and visual and aesthetic effects by increasing the driver's awareness when used in safety zones such as school zones, bus lanes, and bicycle lanes around the school.

The road paving method using the anti-slip color polymer cement paste composition having anti-stiffness and water retention according to the present invention is excellent in load resistance and wear resistance, and thus paves roads, unloading places, parking lots, garages, factories, etc. When it is applied to, it can be used for a long time without frequent maintenance, which can reduce maintenance cost.

Hereinafter, with reference to the drawings will be described in detail. However, these drawings are for illustrative purposes only and the present invention is not limited thereto.

Anti-slip color polymer cement paste composition having anti-stiffness and water retention according to the present invention and a cross section of the road pavement method using the same are shown in FIG. 1.

Looking at the drawing,

For new injections, the asphalt concrete mixture is located at the bottom.

The asphalt concrete mixture is made of a mixture of modified asphalt, coarse aggregate, fine aggregate, and filler, and to secure a porosity of 15 to 30% so that anti-slip color polymer cement paste having anti-stiffness and water retention is easily injected. It features.

The asphalt concrete mixture is laid (S11) and compacted (S12).

The anti-slip color polymer cement paste composition having semi-rigidity and water retention properties is mixed using a hand mixer or the like (S13).

The anti-slip color polymer cement paste composition (S13) having anti-stiffness and water retention is a cement paste composed of a fast-hardening cement and a two-component type of acrylic polymer dispersion for injection.

Fast cement type is 35 ~ 50% by weight of ordinary portland cement, 0.5 ~ 1.0% by weight of lithium carbonate, 30 ~ 50% by weight of calcium sulfo aluminate fastener, 3 ~ 5% by weight of calcium sulfo aluminate expanding material, silica sand 10 ~ 20% by weight, 0.1 to 1.0% by weight of the coagulant delaying agent, 0.1 to 1.0% by weight of the high fluidizing agent, 0.1 to 1.0% by weight of the powder defoamer, the injection-type acrylic polymer dispersion is methyl metaacrylic acrylic emulsion (Tg value 5-10 ° C., 45% by weight of dispersion solution) 88.5 to 99.4% by weight, 5-10% by weight of dispersed ink, 0.1 to 0.5% by weight of thickener, 0.1 to 0.5% by weight of antifoam, 0.1 to 0.5% by weight of dispersant Consists of

The first common portland cement is used to increase the stability of acicular hydrate formation called Ettringite in the composition.

The lithium carbonate (Li ₂ CO ₃ ) serves as a coagulation accelerator to accelerate the calcium sulfo aluminate hardwood to start the first hydration action, bringing about the discoloration of color when used over 1.0% by weight.

The calcium sulfo aluminate hardwood material is a product obtained by pulverizing clinker produced by firing aluminate-based minerals, limestone and gypsum at about 5000 ~ 6000 cm2 / g of Blaine. It produces an acicular hydrate called Ettringite.

The calcium sulfo aluminate expander is composed of minerals such as C ₄ A ₃ and CaO, CaSO ₄ as the main component to produce an ettringite, which is a fine acicular or columnar crystalline high sulfate hydrate, during the curing process, thereby exhibiting expansion The structure of the hardened body is made compact and hardening shrinkage is minimized.

The silica sand (SiO ₂ ) acts as a filler in the cement hardened body to reduce the amount of hydration heat generated by the hydration reaction of the cement by reducing the amount of cement in the powder, so that when the temperature is high, such as summer, It prevents the generation of high heat by rapid hydration of the hardened body containing the cement.

The coagulation delay agent may be used alone or in combination of any one or more selected from the group consisting of citric acid, citric acid, tartaric acid, and sodium gluconate to ensure minimal working time.

The high fluidizing agent reduces the required unit quantity required for securing the consistency of cement paste, thereby reducing the excess amount other than the amount required for cement hydration, thereby densifying the internal structure of the cement hardened body, thereby improving water tightness and freezing. Improves melting resistance and enhances durability. In addition, viscosity and fluidity are simultaneously given to the cement paste that is not hardened, so that the pores of asphalt concrete can be easily injected without any vibration or vibration, and one or more selected from the group consisting of naphthalene, polycarboxylic acid, and melamine based It can be used.

The powder defoamer is added to reduce the amount of air due to the generation of entrained air and may be used alone or in combination of any one or more selected from the group consisting of polyether, silicon, ethyl alcohol and ethylene glycol.

The acrylic polymer dispersion forms a film in the cement paste cured body to improve warpage, tensile strength, adhesion strength, and water retention to improve durability such as neutralization, chloride ion penetration, and freeze-thawing. Mathacrylate) As an acrylic emulsion, a Tg value of 5 ~ 10 ℃ is used.

The ink is added to facilitate identification on the road, and the pigment must be dispersed at a softening degree of 6 NS or more, so that there is no dichroic color and excellent clarity, and the inorganic pigment is used because it is discolored by cement when the organic pigment is used.

Thickening agent to prevent the precipitation of the pigment in the ink to increase the shelf life can be used alone or mixed with any one or more selected from the group consisting of methyl cellulose, acrylic, urethane.

The antifoaming agent is used to suppress bubbles generated when mixing the acrylic polymer dispersion, and may be used alone or in combination of any one or more selected from the group consisting of polyether, silicone, ethyl alcohol and ethylene glycol.

The dispersant may be used for stabilizing the inorganic pigment and may be used alone or in combination of any one or more selected from the group consisting of a deagglomerated wet dispersant.

The non-slip color polymer cement paste composition having anti-stiffness and water retention properties is mixed (S3) using a hand mixer or the like at a weight ratio of fast-hardening cement: acrylic polymer dispersion for injection = 100: 45 (S3). First injection (S14) using a rubber raker, a roller, a spray, or the like on (S12). If necessary, a vibration plate, a vibration roller, or the like is applied to extract bubbles therein, while sufficiently injecting a non-slip color polymer cement paste having anti-stiffness and water retention.

When the non-slip color polymer cement paste having anti-stiffness and water retention properties is injected, it should be carried out after the temperature of the asphalt concrete is 50 ° C or lower, and in order to prevent contamination and damage around the existing road surface before construction. Using precautions to protect the road surface using a vinyl sheet, etc., the construction end should take appropriate measures to prevent the non-slip color polymer cement paste, which has semi-rigidity and water retention properties, from flowing out.

Sprayed by spray or hand (S15) to prevent slipping of the silica sand or silica glass in the state in which the non-slip color polymer cement paste composition having the anti-stiffness and water retention properties is injected (S15), the particle size is 5 ~ 20 mesh It is preferable.

After spraying the silica sand or silica glass, a non-slip color polymer cement paste composition having semi-rigidity and water retention is injected into the secondary using a roller or a spray (S16).

After completion of the injection of the non-slip color polymer cement paste composition having the secondary semi-rigidity and water-retaining properties (S17) to be cured for a predetermined time (S17).

Methyl methacryl-based acrylic emulsion (Tg value 15 ~ 25 ℃, resin dispersion 55% by weight dispersion) 88 ~ 94.3% by weight, 5-10% by weight of the dispersion is completed, 0.5 ~ 1.0% by weight thickener on the cured package , Top coat coating agent for surface strengthening consisting of 0.1 ~ 0.5% by weight of antifoaming agent, 0.1 ~ 0.5% by weight of dispersing agent using a roller or spray, if necessary (S18).

The top coat for surface reinforcement is resistant to weathering and fouling resistance and maintains brightness for a long time and is coated for surface reinforcement, and the use of methyl methacrylate (Methyl Mathacrylate) Tg value of 15-25 ° C. is used to make it sticky. It does not remain, which improves pollution resistance.

The ink, thickener, defoamer, and dispersant are the same as the acrylic polymer dispersion for injection.

In the case of painting, the surface of the original asphalt concrete or cement concrete is roughened to a depth of 1 to 3 mm using a flattening machine, and then cleaned with a chirping or high pressure washer to remove foreign substances (S21).

Methyl methacryl-based acrylic emulsion (Tg value 5 ~ 10 ℃, resin dispersion of 35% by weight dispersion) 99.5 to 99.9% by weight, defoaming agent 0.1 to 0.5% by weight in order to enhance the adhesion to the asphalt concrete, Laura, Apply using a brush or spray (S22).

The binder is a methyl methacrylate acrylic emulsion that improves adhesion strength and improves durability such as chloride ion penetration and freeze-thawing. As the binder has a low Tg value of 5 to 10 ° C., it has excellent stickiness and elongation. do.

A non-slip color polymer cement paste composition and silica sand having semi-rigidity and water retention properties are mixed using a hand mixer or the like (S23).

The anti-slip color polymer cement paste composition (S23) having anti-stiffness and water retention is a cement paste composed of a fast-hardening cement, an acrylic polymer dispersion for painting, and silica sand.

Rapid-hardening cement is the same as for injection, and the acrylic polymer dispersion for painting is methyl metaacrylic acrylic emulsion (Tg value of 5 to 10 ° C., 60% by weight of a dispersion solution of resin) 84 to 93.8% by weight, and complete dispersion of ink 5 It consists of -10 weight%, the thickener 1-5 weight%, the defoaming agent 0.1-0.5 weight%, and the dispersing agent 0.1-0.5 weight%.

The methyl methacryl-based acrylic emulsion, ink, thickener, defoamer, and dispersant are the same as the acrylic polymer dispersion for injection.

The silica sand uses a particle size of 5 to 20 mesh.

The anti-slip color polymer cement paste composition having anti-stiffness and water retention properties is mixed using a hand mixer or the like at a weight ratio of fast-hardening cement: acrylic polymer dispersion for injection: silica sand = 100: 45: 60 (S23). Then, the paint is coated on the asphalt concrete (S22) on which the surface is arranged by using a roller and a spray (S24).

After completion of the coating of the non-slip color polymer cement paste composition having the secondary semi-rigidity and water-retaining properties (S25) to allow curing for a predetermined time (S25).

On top of the cured package is coated with a top coat for surface strengthening using a roller or a spray as necessary (S26).

The top coat for surface hardening is the same as for injection.

The present invention will be described in detail through the following examples. However, these examples are for illustrative purposes only and the present invention is not limited thereto.

Example 1 Infusion

Type 1 ordinary portant cement 47.55 wt%, lithium carbonate 0.5 wt%, calcium sulfo aluminate fastener 35 wt%, calcium sulfo aluminate expander 4 wt%, silica sand 12 wt%, coagulation delay 0.15 wt%, high fluidization The inner diameter cement is mixed and prepared so as to be 0.3 wt% and 0.5 wt% of the powder defoaming agent, and the acrylic polymer dispersion is a methyl methacryl-based acrylic emulsion (Tg value of 5 to 10 ° C. and a dispersion solution of 45 wt% of resin) 89.4 wt% A water-soluble polymer emulsion was prepared in 10% by weight of the ink having completed dispersion, 0.3% by weight of thickener, 0.1% by weight of antifoaming agent, and 0.2% by weight of dispersant.

The fast-hard cement mixture and the water-soluble polymer emulsion were mixed at a weight ratio of 100: 45 to prepare a non-slip color polymer cement paste composition having anti-stiffness and water retention.

In addition, 90.3% by weight of a metaacryl-based acrylic emulsion (Tg value 15-25 ° C., 55% by weight of a dispersion solution of resin), 8% by weight of dispersed ink, 0.7% by weight of thickener, and 0.5% of antifoam. %, 0.5% by weight of dispersant.

Example 1-1 for Painting

A binder was prepared from 99.7% by weight of methyl methacryl-based acrylic emulsion (Tg value of 5 to 10 ° C., a dispersion solution of 35% by weight of resin), and 0.3% by weight of an antifoaming agent.

In addition, using the inner diameter cement of [Example 1 injection], the acrylic polymer dispersion for coating is 90% by weight of methyl methacryl-based acrylic emulsion (Tg value 5 ~ 10 ℃, 60% by weight dispersion aqueous solution) To prepare a water-soluble polymer emulsion, 8% by weight of the dispersed ink, 1% by weight of thickener, 0.5% by weight of antifoaming agent, and 0.5% by weight of dispersant, silica sand (No. 4) having a particle size of 14-16 mesh was selected.

The fast-hard cement mixture, water-soluble polymer emulsion and silica sand were mixed at a weight ratio of 100: 45: 60 to prepare a non-slip color polymer cement paste composition having anti-stiffness and water retention.

At this time, the top coat for strengthening the surface of [Example 1 injection] was used.

Example 2 Infusion

Except for using the methyl methacryl-based acrylic emulsion in [Example 1 injection] was prepared in the same manner except using an EVA resin (45% by weight dispersion solution).

[Example 2-1 Coating]

Except for using the methyl methacryl-based acrylic emulsion in [Example 1-1 for coating] was prepared in the same manner except using EVA resin (dispersion aqueous solution of 60% by weight resin).

Example 3 Infusion

Except for using the methyl methacryl-based acrylic emulsion in [Example 1 injection] was prepared in the same manner except using SBR Latex (dispersion aqueous solution of 45% by weight of resin).

Example 3-1 For Painting

Except for the methyl methacryl-based acrylic emulsion in [Example 1-1 for coating] was prepared in the same manner except using SBR Latex (dispersion aqueous solution of 45% by weight of resin).

Example 4 Infusion

Except for using the methyl methacryl-based acrylic emulsion in [Example 1 injection] was prepared in the same manner except using a powder resin (45% by weight dispersion solution).

Example 4-1 For Painting

Except for the methyl methacryl-based acrylic emulsion in [Example 1-1 for coating] was prepared in the same manner except for using a powder resin (45% by weight dispersion solution).

[Comparative Example 1 Injection]

Cement paste was mixed and prepared so that one kind of ordinary Portland cement was 79.6% by weight, 19.6% by weight of silica sand, 0.3% by weight of a high softening agent, and 0.5% by weight of powder defoaming agent.

In addition, the acrylic polymer dispersion of [Example 1 for injection] was used.

The fast-hard cement mixture and the water-soluble polymer emulsion were mixed at a weight ratio of 100: 45 to prepare an anti-slip color polymer cement paste composition.

At this time, the top coat for strengthening the surface of [Example 1 injection] was used.

[Comparative Example 1-1]

The cement paste of [Comparative Example 1 for injection] and the acrylic polymer dispersion and silica sand of [Example 1-1 for coating] were used.

The cement paste mixture, the water-soluble polymer emulsion and the silica sand were mixed in a weight ratio of 100: 45: 60 to prepare a non-slip color polymer cement paste composition.

In addition, the binder of [Example 1-1 for coating] and the top coat for surface hardening were used.

[Comparative Example 2 Injection]

It was prepared in the same manner as in [Comparative Example 1 Injection] using the cement paste of [Comparative Example 1 Injection] and the polymer dispersion of [Example 2 Injection].

[Comparative Example 2-1 Coating]

It was prepared in the same manner as in [Comparative Example 1 Coating] using the cement paste of [Comparative Example 1-1 Coating] and the polymer dispersion and silica sand of [Example 2-1 Coating] in.

[Comparative Example 3 Injection]

It was prepared in the same manner as in [Comparative Example 1 Injection] using the cement paste of [Comparative Example 1 Injection] and the polymer dispersion of [Example 3 Injection].

[Comparative Example 3-1 Coating]

It was prepared in the same manner as in [Comparative Example 1 Coating] using the cement paste of [Comparative Example 1-1 Coating] and the polymer dispersion and silica sand of [Example 3-1 Coating] in.

[Comparative Example 4 Injection]

It was prepared in the same manner as in [Comparative Example 1 Injection] using the cement paste of [Comparative Example 1 Injection] and the polymer dispersion of [Example 4 Injection] at.

[Comparative Example 4-1 Coating]

It was prepared in the same manner as in [Comparative Example 1 Coating] using the cement paste of [Comparative Example 1-1 Coating] and the polymer dispersion and silica sand of [Example 4-1 Coating] in.

Test Example 1 Preparation of Test Specimen

Asphalt mixture for injection is 4.8% by weight of asphalt, 1.2% by weight of modifier, the largest aggregate size is 13mm (No. 78), 75% by weight of coarse aggregate using crushed crushed granite with 15% of 5mm sieve. 15% by weight of fine aggregate passed by 95% or more in 5mm sieve, 4% by weight of filling material which is limestone powder, and pressed by about 22% for easy injection of non-slip color polymer cement paste having anti-stiffness and water retention. An asphalt concrete specimen with a porosity of was prepared.

In addition, the asphalt mixture for coating is mixed with 6% by weight of asphalt, 45% by weight of coarse aggregate, 45% by weight of fine aggregate, 4% by weight of filler material, and pressed to prevent slippage having anti-stiffness and water retention. Asphalt concrete specimens having a porosity of about 4% for coating color polymer cement paste were prepared.

At this time, the specimens for indirect tensile strength test were cylindrical of φ100 mm × 50 mm, respectively, and the specimens for test such as repeated driving test, flexural strength test, and slip resistance were each manufactured to have a size of 300 × 300 × 50 mm 3.

After the first injection of each of the compositions prepared in Examples 1 to 4 Injection and Comparative Example 1 to 4 Injection for the prepared injection specimens, the silica sand (No. 4) having a particle size of 14 to 16 mesh was injected. After spraying evenly and curing each composition by secondary coating, the coating for surface reinforcement was coated with Laura to cure to prepare a test specimen for the packaging test of an anti-slip color polymer cement paste composition having anti-stiffness and water retention.

In addition, after coating and curing the respective compositions prepared in Example 1-1 for coating to 4-1 for coating and Comparative Example 1-1 for coating for 4-1 to the prepared coating specimen, the surface is strengthened. The coating agent for coating was cured with a roller to prepare a test specimen for packaging test of a non-slip color polymer cement paste composition having anti-stiffness and water retention.

Test Example 2 Strength Test

In order to compare the physical properties of the composition prepared according to the present invention and the composition prepared in Comparative Example, KS F 2477 (Method of testing strength of polymer cement mortar) and KS for each specimen prepared in Test Example 1 F 4916 (cement admixture polymer) was tested for compressive strength, flexural strength, and adhesive strength, and the results are shown in [Table 1 Injection] and [Table 1-1 Coating].

[Table 1 for injection]

Strength (N / mm2) Compression warp adhesion 3 hours 3 days 7 days 3 hours 3 days 7 days 3 hours 3 days 7 days Example 1 14.8 34.7 38.7 4.2 7.1 8.5 1.6 1.9 2.8 Example 2 15.1 34.8 38.5 3.9 8.5 9.4 1.5 1.7 2.4 Example 3 14.7 34.2 38.4 4.1 8.7 9.4 1.7 1.9 2.4 Example 4 14.9 34.3 38.4 4.0 8.4 9.6 1.5 1.8 2.7 Comparative Example 1 0 22.1 27.1 0 2.1 4.7 0 1.1 1.7 Comparative Example 2 0 22.4 26.5 0 3.7 5.1 0 1.4 1.8 Comparative Example 3 0 21.8 27.0 0 3.6 5.0 0 1.3 1.7 Comparative Example 4 0 22.2 27.2 0 3.8 5.0 0 1.4 1.6

[Table 1-1 Coating]

Strength (N / mm2) Compression warp adhesion 3 hours 3 days 7 days 3 hours 3 days 7 days 3 hours 3 days 7 days Example 1 17.4 32.4 35.1 2.7 3.6 5.1 1.4 1.6 1.9 Example 2 17.7 31.7 34.3 2.3 3.3 5.4 1.3 1.6 1.8 Example 3 16.8 32.2 33.7 2.4 3.3 4.8 1.4 1.7 1.8 Example 4 16.4 32.5 33.4 2.4 3.5 4.4 1.2 1.5 1.9 Comparative Example 1 0 17.5 21.4 0 1.2 2.4 0 1.1 1.2 Comparative Example 2 0 15.4 22.5 0 1.0 2.2 0 1.4 1.5 Comparative Example 3 0 17.8 21.7 0 1.0 1.7 0 1.3 1.5 Comparative Example 4 0 16.1 20.3 0 1.1 1.9 0 1.4 1.7

As can be seen from the above [Table 1 injection] and [Table 1-1 coating], the compressive strength, the bending strength, and the adhesive strength are 3 hours for Comparative Examples 1 to 4 injections and Comparative Examples 1 to 4 coatings. Although hardening was not performed properly, the non-slip color polymer cement paste composition having anti-stiffness and water retention of the present invention was used in Examples 1 to 4 injection and Example 1 to 4 coating specimens. Very good performance in 3 hours.

[Test Example 3] Flow time or flow and absorption rate, dry shrinkage rate test

In order to compare the physical properties of the composition prepared according to the present invention and the composition prepared in Comparative Example, KS F 4004 (absorption rate test method of concrete brick) for each specimen prepared in [Test Example 1], KS F Absorption rate, dripping time, and dry shrinkage test were carried out by 4044 (hydraulic cement shrinkage grout) and KS F 2424 (concrete length change test), and the results were shown in [Table 2 injection] and [Table 2-1 coating] ].

[Table 2 Injection]

Absorption rate (%) Descent time (seconds) Dry Shrinkage (× 10 ^-4 ) Example 1 Injection 28.7 11.8 2.3 Example 2 Injection 15.9 11.1 2.3 Example 3 Injection 15.4 11.4 2.2 Example 4 Injection 15.7 11.7 2.4 Comparative Example 1 Injection 10.5 14.5 3.7 Comparative Example 2 Injection 7.7 15.1 3.4 Comparative Example 3 Injection 7.9 14.8 3.6 Comparative Example 4 Injection 7.4 14.7 3.8

[Table 2-1 Coating]

Absorption rate (%) Flow value (mm) Dry Shrinkage (× 10 ^-4 ) Example 1-1 for painting 32.1 178 1.9 Example 2-1 24.5 176 2.1 Example 3-1 Coating 24.7 176 2.4 Example 4-1 23.8 177 2.1 Comparative Example 1-1 17.4 144 2.7 Comparative Example 2-1 11.8 148 3.2 Comparative Example 3-1 11.7 151 3.1 Comparative Example 4-1 12.1 145 3.5

As shown in [Table 2 for injection] and [Table 2-1 for coating], the anti-slip color polymer cement paste composition having anti-stiffness and water retention prepared in the present invention in water absorption, Example 1 It has been shown that the water absorption is excellent in the injectings 4 to 4-1 and in the examples 1-1 to 4-1, and in particular, in the case of injecting the examples 1 and 1-1. . In addition, in case of the dripping time, it is for measuring workability and ease of injection. When the dripping time is less than 9 seconds, the fluidity is too large to easily separate material from water and cement. The workability is lost, and in the case of a flow value of 200 mm or more, the fluidity is too large to cause separation of material and silica from water and cement, and when it is less than 140 mm, fluidity is lowered and workability is lost. Therefore, as a result of the above measurement, the anti-stiff and water-resistant non-slip color polymer cement paste composition prepared in the present invention satisfies the requirements for injecting into the small voids of asphalt concrete, which is the base of the pavement, It can be seen that the superiority. On the other hand, in the dry shrinkage rate, the specimens for Example 1 to 4 injection and Example 1-1 for coating to 4-1 coating were compared to Comparative Example 1 for injection 4 and injection for Comparative Example 1-1 to 4- 1 Since the shrinkage rate is lower than that of the coating material for painting, it can be seen that the defects in product defects due to shrinkage during construction are reduced by using the anti-slip color polymer cement paste composition having anti-stiffness and water retention properties prepared in the present invention. .

Test Example 4 Chloride Ion Penetration Depth Test

In order to compare chloride ion penetration depth between the composition prepared according to the present invention and the composition prepared in Comparative Example, JIS A 6203 (cement admixture polymer dispersion and ash oil) was used for each specimen prepared in Test Example 1. The test was carried out with a powder powder resin), and the results are shown in [Table 3].

[Table 3]

Example for injection Comparative Example One 2 3 4 One 2 3 4 Chloride ions
Penetration depth (mm) 1.3 2.1 2.4 2.3 7.2 8.6 8.4 8.7 Example For Painting Comparative Example 1-1 2-1 3-1 4-1 1-1 2-1 3-1 4-1 Chloride ions
Penetration depth (mm) 1.5 1.9 1.8 2.1 6.8 7.3 7.4 7.7

As can be seen from Table 3, the non-slip color polymer cement paste composition having anti-stiffness and water retention (preservation), prepared in the present invention, in the depth of chloride ion penetration, Examples 1 to 4 injection and Example 1- 1 to 4-1 coating specimens showed less chloride ion penetration depth than Comparative Examples 1 to 4 injection and Comparative Example 1-1 coatings to 4-1 coatings. It can be seen that it sufficiently prevents aging.

Test Example 5 Slip Resistance Measurement

In order to measure the sliding resistance of the anti-slip color polymer cement paste composition having anti-stiffness and water retention prepared according to the present invention, ASTM E303 (surface friction) was used for each specimen prepared in Test Example 1. Property measurement method), AASHTO T 278 (surface friction characteristics measured by the British pendulum tester) was tested, the results are shown in Table 4.

[Table 4]

Example for injection Example For Painting One 2 3 4 1-1 2-1 3-1 4-1 slip
Resistance (BPN) 123 119 121 108 142 133 134 127

As can be seen from Table 4, the anti-slip effect of the anti-slip color polymer cement paste composition having anti-stiffness and water retention properties produced in the present invention is excellent in slip resistance, thereby preventing accidents due to slip. It can be seen that there is an effect that can be done.

1 is a cross-sectional view of a novel injection pavement method using a non-slip color polymer cement paste composition having anti-stiffness and water retention in one embodiment according to the present invention.

2 is a cross-sectional view of a road paving method for painting an existing road using a non-slip color polymer cement paste composition having anti-stiffness and water retention in another embodiment according to the present invention.

Claims (11)

In the road paving method using a non-slip color polymer cement paste composition having semi-rigidity and water retention, A chipping step of roughly chipping the surface of the existing asphalt concrete or cement concrete road; A binder coating step of applying a binder on the road after the step of chipping; A mixing step of mixing the anti-slip color polymer cement paste composition and silica sand having semi-rigidity and water retention; A painting step of coating the mixture through the mixing step on the road through the binder coating step; Curing step of curing the asphalt concrete after the coating step; A top coat drafting step of coating a top coat coating agent for surface reinforcement on the asphalt concrete which has undergone the curing step; The fast cement type is, one kind of ordinary portland cement 35-50% by weight, lithium carbonate 0.5-1.0% by weight, calcium sulfo aluminate fastening material 30-50% by weight, calcium sulfo aluminate expanding material 3-5% by weight, 10 to 20% by weight of silica sand, 0.1 to 1.0% by weight of coagulation retardant, 0.1 to 1.0% by weight of high fluidizing agent, 0.1 to 1.0% by weight of powder defoamer, The acrylic polymer dispersion for painting is methyl metaacrylic acrylic emulsion (Tg value of 5 to 10 ° C., 60% by weight of dispersing aqueous solution), 84 to 93.8% by weight, dispersed ink 5 to 10% by weight, thickener 1 to 1 It consists of 5% by weight, antifoaming agent 0.1-0.5% by weight, dispersant 0.1-0.5% by weight, The silica sand pavement method using a non-slip color polymer cement paste composition having a semi-rigid and water-retaining (characterized in that the particle size of 5 ~ 20 mesh). The method of claim 1, The top coat for the surface strengthening, Methyl methacryl-type acrylic emulsion (Tg value 15-25 degreeC, resin dispersion 55 weight% dispersion aqueous solution) 88-94.3 weight%, 5-10 weight% of complete dispersion ink, 0.5-1.0 weight% of a thickener, 0.1-0.5 weight of antifoamer %, And 0.1 to 0.5% by weight of the dispersant, the road paving method using a non-slip color polymer cement paste composition having anti-stiffness and water retention. The method according to claim 1 or 2, The mixture of the mixing step, It consists of a fast-hardening cement, acrylic polymer dispersion for painting, and silica sand, and is characterized in that the fast-hardening cement, an acrylic polymer dispersion for injection and silica sand are mixed in a weight ratio of 100: 40-50: 55-65. And a pavement method using a non-slip color polymer cement paste composition having water retention properties. delete delete delete delete delete delete delete delete

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