KR102274180B1 - Road paving material composition to reveal natural stone texture and method for paving road using the same - Google Patents

Abstract

A road paving method having a natural stone surface according to an embodiment of the present invention comprises: a foundation layer laying step of installing any one selected from asphalt concrete or cement concrete to form a foundation layer; a first pavement coating step of forming a first pavement coating layer by spraying cement paste on the upper portion of the base layer; A natural stone spraying step of spraying a natural stone having a particle size of 3 to 19 mm on the surface of the first pavement coating layer; a second pavement coating step of forming a second pavement coating layer by spraying cement paste on top of the first pavement coating layer sprayed with natural stone; and a finishing step of compacting the surface while spraying water on the second pavement coating layer so that the natural stone can be exposed to the outside within 30 minutes after the second pavement coating layer is installed.

Description

Road paving material having a natural stone surface and a road paving method using the same {ROAD PAVING MATERIAL COMPOSITION TO REVEAL NATURAL STONE TEXTURE AND METHOD FOR PAVING ROAD USING THE SAME}

The present invention relates to a road pavement material and a road pavement method using the same, and more particularly, natural stone contained as an aggregate makes the natural stone protrude to the pavement surface to improve the surrounding landscape, improve slip resistance, and excellent durability of the pavement surface and to a road paving material having a uniform natural stone surface and a road paving method using the same.

In general, a road is laid for the passage of people, bicycles, automobiles, etc., and has excellent durability to withstand repeated loads such as vehicles and vehicles passing on the road, and is not damaged due to climate change. It must be free from harm and must be packaged so as not to harm human body

Conventionally, road pavement includes asphalt pavement, cement pavement, resin pavement, etc. depending on the material used. Among them, cement pavement includes cement concrete pavement, color permeable concrete pavement, etc. It is also paved by adding aggregates having a predetermined particle size, such as soybean gravel, crushed stone, etc.

In particular, the natural stone protrusion pavement method, in which natural aggregate is mixed with cement and installed, is installed so that the input natural aggregate is exposed over the surface of the paved road so that it can be seen with the naked eye, thereby forming a nature-friendly feeling and improving the aesthetics of the pavement has an advantage in

As described above, the natural stone protrusion paving method is to mix cement and water with natural aggregates such as soybean gravel having a particle size of about 10 mm or less, and then pave the pavement on the road, then spray the surface of cement to act as a binder. A paving method was used to expose the aggregate to the surface by peeling it off.

However, when watering occurs, the aggregate is lifted during watering and the strength of the pavement is lowered, so that it is difficult to walk or move after curing, and when the watering amount is increased or the watering pressure is increased to expose the natural aggregate to the road surface There was a problem in that the value of paved roads decreased due to an increase in the loss of cement and aggregates.

In addition, watering is difficult in the winter season, and there is a problem of causing secondary damage such as safety accidents such as slipping of pedestrians due to watering.

Therefore, after paving with cement concrete and curing, an epoxy primer is sprayed on the top, and natural stone is mixed with an oil-based resin such as epoxy or urethane or an acrylic resin and installed, and then a method of finishing using a trowel or a heating roller has been developed.

However, resins such as epoxy are not only vulnerable to UV rays, but also cause yellowing, making it difficult to maintain the natural color of natural stone, and have a problem in that durability is lowered due to low adhesion, and maintenance costs are increased accordingly.

Therefore, the present inventor uses natural stone as an aggregate, mixes cement, water, water-soluble resin and admixture, etc. to install it alone or forms a lower layer, then sprays a high fluidizer or emulsion resin and compacts it with a roller to extrude the natural stone to the surface. A paving method with a natural stone surface was developed.

However, when installing the cement mixture mixed with cement and aggregate, the time is delayed, so when installing, it is compacted after spraying a release agent such as a high-softening agent, but there is a problem that the natural stone does not protrude smoothly, so it can be installed in time. It had difficulties in construction, such as requiring a technician.

In addition, it requires production equipment such as a cement mixing mixer, and it is difficult to produce on-site due to problems such as securing a place to store various materials. It was difficult to secure, and there was a limit to the implementation of a uniform surface.

KR 10-1042522 B1 (2011.06.13) KR 10-2016-0141989 A (2016.12.12)

The present invention has been devised to solve the above problems, and provides a road paving material having a natural stone surface, in which natural stone protrudes to the pavement surface, improves slip resistance, and can improve nature-friendly aesthetics, and a road paving method using the same .

In addition, the present invention provides a road paving material having a natural stone surface having excellent adhesion to improve the quality and durability of the pavement surface, and a road paving method using the same.

In addition, the present invention provides a road paving material having a natural stone surface capable of improving the uniformity of a pavement surface while reducing pavement time and paving costs by minimizing the use of aggregate, and a road paving method using the same.

The technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art from the description of the present invention.

A road paving method having a natural stone surface according to an embodiment of the present invention comprises: a foundation layer laying step of installing any one selected from asphalt concrete or cement concrete to form a foundation layer; a first pavement coating step of forming a first pavement coating layer by spraying cement paste on the upper portion of the base layer; A natural stone spraying step of spraying a natural stone having a particle size of 3 to 19 mm on the surface of the first pavement coating layer; a second pavement coating step of forming a second pavement coating layer by spraying cement paste on top of the first pavement coating layer sprayed with natural stone; and a finishing step of compacting the surface while spraying water on the second pavement coating layer so that the natural stone can be exposed to the outside within 30 minutes after the second pavement coating layer is installed; It is room temperature asphalt concrete installed at room temperature of 25°C or low-temperature asphalt concrete installed at 40-80°C, and the cement concrete is installed at room temperature including water, cement, sand gravel, admixture, and emulsion resin, and the natural stone is sprayed The step is a particle size screening process of selecting the natural stone to have a particle size of 3 to 19 mm; a watering process of supplying water so that the selected natural stone contains moisture inside to prepare a water-hydrated natural stone; and a natural stone spraying process of spraying the wet natural stone on the top of the pavement coating layer using a spraying screen having a mesh ball having a diameter of 20 mm or more, wherein the spraying screen includes, wherein the natural stone is uniformly sprayed on the first pavement coating layer It is characterized in that the natural stone is sprayed through a mesh hole formed in a mesh shape with an open upper portion and an internal space formed therein, and spaced apart from each other in the longitudinal and lateral directions on the bottom surface.

More preferably, in the road pavement method having a natural stone surface according to an embodiment of the present invention, before the first pavement coating step, 5 to 200 parts by weight of water, 0.5 to 4 parts by weight of an admixture, and coating based on 100 parts by weight of cement A coating preparation step of preparing a cement paste by mixing 5 to 30 parts by weight of an additive with cement; may further include.

In this case, the admixture is one selected from a water reducing agent or a high fluidization agent, and the coating additive is preferably an emulsion resin.

In the coating preparation step, the cement paste may be characterized in that it further comprises 50 to 500 parts by weight of silica sand or sand having a particle size of 5 mm or less with respect to 100 parts by weight of cement.

In the first and second pavement coating steps, it is preferable to spray 0.3 to 2 kg of cement paste per 1 m 2 .

In the natural stone spraying step, natural stone contains at least one of natural stone color aggregate, coated color aggregate, soybean gravel, elvan stone, and coated color glass, and the coated color aggregate or coated color glass is a resin mixture 1 to 100 parts by weight of natural stone or glass. It is prepared by mixing 100 parts by weight and 0.5 to 3 parts by weight of the pigment, the pigment is at least one selected from an inorganic pigment, a pearl pigment, a phosphorescent pigment, and a fluorescent pigment, and the resin mixture is 100 parts by weight of a resin selected from an oil-based resin or an emulsion resin Cement is used as needed, and the cement may be characterized in that it is prepared by mixing 500 parts by weight or less.

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More preferably, the road paving method having a natural stone surface according to an embodiment of the present invention may further include an asphalt concrete preparation step of preparing asphalt concrete before the foundation layer installation step.

The asphalt concrete preparation step is an aggregate heating process in which 20 to 80 parts by weight of aggregate is heated to a temperature of 100 to 150° C. with respect to 100 parts by weight of the total aggregate determined in the mixing design to prepare the heated aggregate; A first coating process of preparing a coating mixture in which a first coating layer is formed by adding 1 to 4 parts by weight of asphalt and 0.001 to 0.05 parts by weight of an asphalt modifier to the heated aggregate based on 100 parts by weight of the total aggregate and mixing; Among the total aggregates determined in the formulation design, the remaining aggregate at room temperature remaining used in the first coating process is added to the coating mixture, and 0.1 to 0.5 parts by weight of filler is mixed with respect to 100 parts by weight of the total aggregate to prevent particles from sticking together. A mixed cooling process of cooling to room temperature to prepare a base material; and a second coating process of manufacturing asphalt concrete by adding 10 to 100 parts by weight of process oil based on 100 parts by weight of asphalt to the base agent to form a second coating layer on the surface of the base agent.

The asphalt modifier is preferably prepared by mixing a reforming base, a process oil, and a stiffness modifier, and the reforming base is at least one selected from styrene-butadiene-styrene (SBS) or styrene isoprene styrene (SIS), and the process oil is aromatic oil. , naphtha oil, and at least one selected from paraffin oil, and the stiffness modifier has a particle size of 3 mm or less and at least one selected from LDPE (low density polyethylene), HDPE (high density polyethylene), and EVA (ethylene-vinyl acetate copolymer). can be characterized.

The cement concrete may be characterized as either water-permeable cement concrete having a porosity of 15% or more or non-permeable cement concrete having a porosity of 8 to 14%.

According to an embodiment of the present invention, it is possible to pave a road having a uniform natural stone surface, which has the effect of paving a nature-friendly road, and the base layer is partially protruded together with natural stone to further improve the aesthetics of the landscape pavement. can have an effect.

In addition, it is possible to shorten the construction time, there is an effect that can reduce the construction cost by minimizing the consumption of natural stone.

In addition, there is an effect of minimizing material loss and paving a road having a natural stone surface with improved durability.

1 is a flowchart showing a road paving method having a natural stone surface according to an embodiment of the present invention.

The objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and examples taken in conjunction with the accompanying drawings. In the present specification, in adding reference numbers to the components of each drawing, it should be noted that only the same components are given the same number as possible even though they are indicated on different drawings. Also, terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The present invention separates and sprays natural stone from cement concrete, asphalt concrete and cement paste to secure the uniformity of the pavement while minimizing the amount of aggregate used, and secures the most important natural stone protrusion uniformity as a characteristic of natural stone projecting pavement, cement concrete Alternatively, a separate mixing process for mixing asphalt concrete and natural stone aggregate for spraying can be omitted, thereby facilitating installation and shortening the construction time.

Hereinafter, a road paving method having a natural stone surface according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a flowchart showing a road paving method having a natural stone surface according to an embodiment of the present invention.

As shown in Figure 1, the road pavement method having a natural stone surface according to an embodiment of the present invention comprises a step of laying a base layer to form a base layer and a first pavement coating layer by spraying cement paste on the upper part of the base layer. The first pavement coating step, the natural stone spraying step of spraying natural stone on the surface of the first pavement coating layer, the second pavement coating step of spraying the cement paste again to form the second pavement coating layer, and compaction while spraying water so that the natural stone is exposed to the surface including finishing steps.

The foundation layer installation step is a process of forming a foundation layer by laying cement concrete prepared by mixing aggregate and cement or asphalt concrete prepared by mixing aggregate and asphalt, etc. on the road surface. use aggregate.

More specifically, if the weight percentage passing through a standard sieve of 4.76 mm (No. 4 sieve) in the particle size distribution of the aggregate used for the cement concrete or asphalt concrete used is 10% or less, it is classified as a water-permeable pavement material and exceeds 10% In this case, it is classified as a non-permeable packaging material.

At this time, even for non-permeable packaging materials, it is preferable that the passing weight percentage is less than 30%, because it forms a space through which the cement paste washed by the water sprayed in the finishing step can flow in, and the washed cement paste becomes the base layer. This is because it is possible to prevent the deterioration of the quality such as the surface strength of the pavement surface due to a separate watering treatment to remove the washed cement paste while improving the durability of the base layer by allowing it to flow into the interior.

In other words, when selecting aggregates, the selection of aggregates based on the standard sieve (No. 4 sieves) is to secure the quality of the base layer and to achieve the purpose of porosity.

Among the final quality items, the porosity is 15% or more for water-permeable packaging materials and 8 to 14% for non-permeable packaging materials. In the case of water-permeable packaging materials, if the porosity is 15%, water permeability can be secured even if the pores are clogged by washed cement paste. In the case of impermeable packaging materials, the porosity of 8 to 14% is because the voids are blocked by the washed cement paste, making it impermeable.

The porosity of 8% or more in the non-permeable pavement material is to secure a space for the washed cement paste to penetrate from the surface. If there are no pores, the cement paste flows to the surface, contaminating the surroundings and causing irregularities in the pavement. can

On the other hand, as the asphalt concrete used in the present invention, it is preferable to use room temperature asphalt concrete installed at room temperature of 15 to 25 ° C or low temperature asphalt concrete installed at 40 to 80 ° C.

This is because, when the cement paste is sprayed on the upper part of the asphalt concrete to be installed at a temperature of 80 ° C or higher, as the sprayed cement paste is hardened by the heat of the asphalt concrete, the natural stone to be sprayed cannot be fixed and its function is lost, This is because packaging at a high temperature takes a long time to cool.

More specifically, the road paving method having a natural stone surface according to an embodiment of the present invention further includes an asphalt concrete preparation step of preparing asphalt concrete that can be used at room temperature or at a low temperature of 40 to 80° C. before the foundation layer installation step. can do.

The asphalt concrete preparation step includes an aggregate heating process of preparing heated aggregate by heating some of the aggregates determined in the mixing design, a first coating process of forming a first coating layer on the surface of the heated aggregate to prepare a coating mixture, and a room temperature state in the coating mixture It includes a mixing cooling process of preparing a base agent by adding and cooling the remaining aggregates and fillers, and a second coating process of manufacturing asphalt concrete by coating the process oil on the base agent.

In the aggregate heating process, 20 to 80 parts by weight of aggregate prepared by mixing new aggregate or new aggregate and regenerated aggregate according to the mixing design is heated to a temperature of 100 to 150 ° C to remove moisture remaining inside.

At this time, when heating to less than 100 ℃, the asphalt and the modifier are not coated and productivity is lowered, and when heated to more than 150 ℃, the aggregate heating cost increases and may cause deterioration of the quality of the asphalt added thereafter, so it is limited to the above range do.

When the aggregate heating is completed, in the first coating step, asphalt and an asphalt modifier are added to the heating aggregate and mixed to form a first coating layer on the surface of the heating aggregate to prepare a coating mixture.

At this time, the asphalt is preferably added in an amount of 1 to 4 parts by weight based on 100 parts by weight of the total aggregate, because when the asphalt is added in an amount of less than 1 part by weight, the formation of the first coating layer is not smooth, and when it exceeds 4 parts by weight Afterwards, in the process of cooling to room temperature, particles adhere to each other, which not only reduces workability, but also requires heating to a temperature of 80°C or higher for separation between particles, as it may lose its advantages as a road repair agent at room temperature or low temperature. limited to the above range.

In the present invention, the asphalt modifier is prepared by mixing a reforming base, a process oil, and a stiffness modifier.

More specifically, the asphalt modifier absorbs the process oil into a modified base selected from SBS or SIS, and is prepared by mixing one or more stiffness modifiers selected from EVA, LDPE, and HDPE having a diameter of 3 mm or less.

SBS and SIS used in asphalt modifiers are formed in the form of sponges and have excellent absorption rates, but when mixed with heated asphalt or heated process oil, the initial particle state is shrunk into elastic hard particles, making it difficult to melt. Because it has changing properties, the process oil is first absorbed, and a stiffness modifier is mixed to secure the elasticity and stiffness of asphalt concrete.

As the process oil, one or more selected from aromatic oil, naphtha oil, and paraffin oil may be used, and it is preferable to use 10 to 100 parts by weight based on 100 parts by weight of SBS.

Because, when the process oil is added in less than 10 parts by weight, there is a problem that it takes a long time to melt, and when it exceeds 100 parts by weight, the asphalt is softened and the quality is not stable and there is a problem that it does not harden, so it is limited to the above range .

The stiffness modifier may use at least one selected from EVA, LDPE, and HDPE, and it is preferable to use it by pulverizing it to 3 mm or less.

Accordingly, since SBS or SIS added as a reforming base is used together, both the rigidity and elasticity of the manufactured asphalt concrete can be improved, and thus the quality can be greatly improved.

In addition, it is preferable to mix 10 to 100 parts by weight of the stiffness modifier with respect to 100 parts by weight of the modified base, because when the stiffness modifier is less than 10 parts by weight, the effect of improving the stiffness is insignificant, and when it exceeds 100 parts by weight, the asphalt concrete produced It is limited to the above range because the rigidity of the pad is excessively improved, which may cause defects such as cracks on the pavement surface.

The asphalt modifier prepared as described above is preferably added in an amount of 0.001 to 0.05 parts by weight based on 100 parts by weight of the total aggregate, because when added in an amount of less than 0.001 parts by weight, the effect of using the modifier is insignificant, and when it exceeds 0.05 parts by weight, asphalt This is because there is a problem in that workability is deteriorated as the asphalt becomes high-viscosity and the process oil added later is assimilated.

When the coating mixture is prepared as described above, the remaining aggregate and filler remaining from the total aggregate determined in the formulation design are added to the coating mixture, mixed, and cooled to room temperature to prepare a base agent.

At this time, it is preferable that the remaining aggregates and fillers are input at room temperature, because the manufacturing time can be shortened by helping to cool the coating mixture prepared by using the heated aggregate heated to 100 to 150 ° C to room temperature, It has the effect of preventing the adhesion of particles.

The filler acts as a filler and as a particle separator, and at the same time, slaked lime, quicklime, stone powder, cement, etc. can be used, and the amount used is in the range of 0.1 to 0.5 parts by weight based on 100 parts by weight of the total aggregate. It is preferable to be

Because, when the filler is added in less than 0.1 parts by weight, there is a problem that not only is insufficient to serve as a filler, but also the asphalt-coated particles cannot be separated, and when the filler is added in excess of 0.5 parts by weight, the asphalt content must be increased This is because there is a problem that workability is reduced.

In addition, it is preferable that the filler is also input at room temperature like the rest of the aggregate, because the first coating process uses the heating aggregate as the main raw material, and there is an effect of primary cooling when mixed with the prepared high-temperature coating mixture. , there is an effect that can shorten the cooling time to room temperature.

As described above, when the base agent is prepared by adding the aggregate and filler at room temperature to the coating mixture in the mixing cooling process and then cooling to room temperature, process oil is added to the base agent in the second coating process to form a second coating layer on the base agent surface. to produce asphalt concrete.

In this case, the process oil is preferably used in an amount of 10 to 100 parts by weight based on 100 parts by weight of asphalt.

Because, when the process oil is added in an amount of less than 10 parts by weight, the asphalt is not sufficiently softened, and when it exceeds 100 parts by weight, the asphalt is excessively softened and the quality is not stable and hardened, so it is limited to the above range.

In addition, 5 to 100 parts by weight of naphtha oil can be added as needed to prepare the asphalt mixture at room temperature, because the asphalt mixture used at room temperature does not have a separate heating process to improve workability. This is because workability must be secured in this state.

On the other hand, in the step of laying the foundation layer according to an embodiment of the present invention, the foundation layer can be formed by installing cement concrete. Cement concrete is generally installed at room temperature, and water, cement, sand gravel, admixture, and emulsion resin are used. It may be prepared by mixing.

At this time, the amount of water used in the manufacture of cement concrete is to control the slump of the cement concrete, and the water-cement ratio (W/C) is preferably 30-50%.

This is because, when the water-cement ratio is less than 30%, the slump of the cement concrete produced is difficult to protrude the aggregate of the foundation mixture when watering less than 2 cm, and the workability is deteriorated. When the water-cement ratio exceeds 50%, the slump of the cement concrete It is limited to the above range because it makes compaction of the roller difficult for more than 10 cm.

More preferably, the cement concrete according to an embodiment of the present invention may further include an AE water reducing agent, which is an admixture for improving durability by reducing the amount of water used and forming the amount of air, facilitating exposure of natural stone, and improving strength.

More specifically, since the strength of cement concrete increases as the amount of water used decreases, a water reducing agent may be additionally used to improve its strength.

On the other hand, it is common to reduce the amount of air in cement concrete to prevent frost damage in winter, but in the present invention, since the amount of air is formed inside the cement concrete, it is possible to prevent freeze damage as well as to make the cement well disturbed to facilitate the protrusion of aggregates.

At this time, the admixture is used in an amount of 0.1 to 2 kg per 1 m 2 depending on the type, and an emulsion resin composed of one or more selected from epoxy, urethane, acrylic, EVA, and latex to improve adhesion is added to 100 parts by weight of cement. It may further include parts by weight.

In the present invention, AE water reducing agent was used as the admixture, and an admixture according to the quality standard KS F 2560 (admixture for concrete) may be used.

At this time, AE water reducing agent can be largely divided into acrylic type and naphtha type, and includes all of AE water reducing retardant, AE water reducing agent, AE water reducing impurity agent, high performance water reducing agent, and intrinsic assimilation agent depending on the season and usage to be installed. can do.

On the other hand, when the emulsion resin is included in less than 1 part by weight, the effect of use is insignificant, and when it exceeds 10 parts by weight, it is excessively used to reduce the quality and increase the cost, so it is limited to the above range.

In the present invention, as the base layer, water permeable cement concrete or impermeable cement concrete can be selected and used according to the requirements of the road to be paved, but in the case of a water permeable base layer, a porosity of 15% or more is used, and an impermeable base layer In the case of , it is preferable to use a porosity of 8 to 14%.

The reason is that, as described above, the strength of the pavement surface of the foundation layer can be improved by preventing the cement paste washed in water from flowing out to the outside during the finishing step, and it is possible to prevent contamination of the surrounding environment and furthermore, the natural stone can protrude smoothly. because it can be done.

In the step of laying the foundation layer according to an embodiment of the present invention, when the asphalt concrete or cement concrete prepared as described above is prepared, the asphalt concrete or cement concrete prepared in the step of laying the foundation layer is installed on the road surface to form the foundation layer.

When the formation of the base layer is completed, the first pavement coating layer is formed by spraying cement paste on the upper part of the base layer in the first pavement coating step.

At this time, it is preferable to spray 0.3 to 2 kg of cement paste per 1 m 2 according to various uses such as roadways, sidewalks, elasticity, and pitching.

Because, when the amount of cement paste applied is less than 0.3 kg per 1 m2, the effect of use is insignificant, and there is a problem in that the loss of the natural stone protruding on the surface increases, and when it exceeds 2 kg per 1 m 2, the cost increases, and the natural stone of the base layer is It is limited to the above range because it makes it difficult to develop the basic color.

More preferably, the coating and packaging method having a natural stone surface according to an embodiment of the present invention further includes a coating preparation step of preparing a cement paste before the first pavement coating step.

In the present invention, the cement paste is prepared by mixing 5 to 200 parts by weight of water, 0.5 to 4 parts by weight of an admixture, and 5 to 30 parts by weight of a coating additive to 100 parts by weight of cement.

In the present invention, the admixture is a high fluidity material or a water reducing material, and when added in less than 0.5 parts by weight, the effect of use is insignificant, and when used in excess of 4 parts by weight, the strength of the first packaging coating layer can be reduced, so it is limited to the above range It is preferable to do

On the other hand, the coating additive is an emulsion resin, and one or more of epoxy, acrylic, urethane, EVA, and latex is selected and used. When added in an amount of less than 5 parts by weight, there is a problem that the adhesion of the first packaging coating layer is lowered, and 30 parts by weight When it is added in excess, the manufacturing cost is increased, but the degree of improvement in the effect is insignificant, so it is limited to the above range.

More preferably, the cement paste according to an embodiment of the present invention may further include one or more selected from loess, charcoal, activated carbon, elvan, zeolite and sericite so that far infrared rays and anions can be emitted.

When the first packaging coating step is completed, a natural stone having a particle size of 3 to 19 mm and containing at least one of coated color aggregate, soybean gravel, elvan stone, and coated color glass is sprayed on the upper portion of the first packaging coating layer.

In this case, the coated color aggregate or coated color glass may be prepared by mixing 1 to 100 parts by weight of a resin mixture and 0.5 to 3 parts by weight of a pigment to 100 parts by weight of natural stone or glass, and the pigment is inorganic pigment, pearl pigment, photoluminescent pigment, fluorescent pigment It is one or more selected from pigments, and the resin mixture is preferably prepared by mixing 100 parts by weight of one resin selected from oil-based resin or emulsion resin and 500 parts by weight or less of cement.

At this time, when the pigment is added in less than 0.5 parts by weight, it is difficult to realize color and when it exceeds 3 parts by weight, it increases the cost, so it is limited to the above range, and when the resin mixture is less than 1 part by weight, the coating effect of aggregate or glass is insignificant, , if it exceeds 100 parts by weight, the cost is excessively increased and limited to the above range.

In addition, when the amount of cement in the resin mixture exceeds 500 parts by weight based on 100 parts by weight of the resin, it is difficult to express the required color or has a problem in that it is impossible to realize the color depending on the material used, so it is limited to the above range.

The natural stone prepared as described above is sprayed on the top of the first pavement coating layer by passing a screen having a mesh ball of 19 mm or more, that is, the maximum size of the natural stone, and it can be sprayed by using a silica sand or calcium chloride spraying device, or by manpower in a narrow place. .

More specifically, in the present invention, the natural stone spraying step includes a particle size selection process for selecting the natural stone to have a particle size of 3 to 19 mm, a water-retaining process for preparing the selected hydrated natural stone, and a natural stone spraying process for spraying the natural stone. .

The hydrating process is a process of preparing a hydrated natural stone by supplying water so that the natural stone contains moisture inside, and by preventing the cement paste of the first and second pavement coating layers from adhering to the surface of the natural stone in advance by moisture. It is possible to easily protrude the natural stone by watering, and by preventing the cement paste from drying out, there is an effect of improving the bonding strength with the natural stone.

To elaborate on slowing the drying rate of cement paste, if the aggregate contains moisture inside, it prevents water from being absorbed into the aggregate from the cement paste, thereby slowing the surface drying.

When the watering process is completed, the natural stone is sprayed using a spray screen during the natural stone spraying process.

In the present invention, the spray screen is provided in a mesh shape with an open upper portion and an inner space formed, and a plurality of mesh balls having a diameter of 19 mm or more are formed at regular intervals in the longitudinal and lateral directions at the bottom thereof.

Accordingly, there is an effect that the natural stone is uniformly sprayed on the first pavement coating layer by spraying the natural stone through the mesh balls formed spaced apart from each other.

If the aggregate is sprayed before compaction as described above, the aggregate is embedded in a state in which the surfaces of the base layer and the first pavement coating layer are disturbed, so that the position does not change during compaction with a roller, thereby realizing a uniform arrangement of natural stones.

At this time, when the aggregate is spread on the base layer and the cement paste is sprayed, not only the sprayed aggregate protrudes, but also the base layer protrudes, so that the pavement with a more natural pattern has an effect.

When the aggregate spraying is completed, in the second pavement coating step, 0.3 to 2 kg of cement paste per 1 m 2 is sprayed on top of the first pavement coating layer sprayed with natural stone to form a second pavement coating layer.

At this time, the sprayed cement paste has the effect of using the same cement paste used in the first pavement coating step to more firmly fix the natural stone and to improve the bonding force between the first pavement coating layer and the second pavement coating layer.

When the second pavement coating step is completed, compaction is performed simultaneously with watering so that natural stones can protrude from the surface of the second pavement coating layer in the finishing step.

At this time, the finishing step is preferably carried out within 30 minutes after the end of the second pavement coating step, because if it exceeds 30 minutes, the second pavement coating layer is excessively hardened, making it difficult to protrude the natural stone.

In the finishing stage, watering and compaction are performed using rollers, and if roller compaction is difficult, compaction can be performed with a compactor or manpower at the same time as watering.

On the other hand, the present invention can be used in locations that require medium and high strength, such as parking lots and roadways, and when low strength is required such as sidewalks, the first pavement coating step or the second pavement coating step is omitted, and the finishing step is performed. can

In this case, the finishing step is preferably carried out within 30 minutes after the completion of coating when the first packaging coating step or the second packaging coating step is omitted, and the reason is the same as described above.

The natural stone should be exposed to 70% or more and to have water permeability for road use. The thickness of the pavement should be 20cm, the porosity should be 15% or more, the permeability coefficient after construction should be 1×10 ^-2 or more, and the flexural strength should be 35kg/cm² or more. .

1. Step of laying the foundation layer

(1) In general, the road surface is cleared and the crushed stone layer and sub-base layer are laid down.

(2) The thickness of the base layer is 25mm, and the cement concrete used is as shown in Table 1, and the target porosity is 20%.

division water cement sand
(5 mm or less) aggregate
(25mm) admixture
(AE reducing agent) acrylic resin amount of material
(kg/㎡) 114 330 - 1,650 1.58 16.5

At this time, for the durability of the pavement and the smooth protrusion of aggregates in the foundation layer, the target air volume is 4±1%.

(3) The water permeable cement concrete mixed with the above formulation was laid at 25 cm, and the compaction was 20%, so that the pavement thickness after compaction was 20 cm, and finished using an asphalt finisher.

2. First packaging coating step

(1) Cement paste having the composition shown in Table 2 below was used.

division water cement emollient epoxy resin Silica sand (No. 8 sand) amount of material
(kg) 200 320 6 80 394

(2) 1.5 kg of cement paste was applied per 1 m 2 .

3. Natural stone spraying step

The natural stone spraying was carried out immediately after the first pavement coating step, and the used natural stone was selected as a natural stone having a specified color with a particle size of 13 mm and sprayed.

At this time, natural stone was sprayed using a spray screen in which 50mm mesh balls were repeatedly formed at intervals of 20mm for uniform spraying.

4. Second packaging coating step

2 kg of the cement paste of the first pavement coating step was sprayed per 1 m 2 .

5. Final Steps

It was carried out immediately after the second pavement coating step, sprayed and compacted more than 5 times using a sprayable tandem roller, covered with plastic and cured for 3 days, and vehicle traffic was conducted after 14 days It was.

division flexural strength
(kg/cm²) Porosity (%) freeze thaw
(100 cycle%) thickness
(cm) pitcher coefficient
(cm/sec) Slip resistance (BPM) remark Test result 47.5 17.5 89 20±1 5.7×10 ^-2 65 standard 35 or more 15 or more 80 or more - 1×10 ^-2
More than over 60

Compressive strength and freeze-thaw were measured after curing by infiltrating the cement paste in the same amount as the on-site spraying amount, spraying aggregate and compacting the spraying.

For sidewalks, the protrusion of natural stone should be 80% or more and it should have impermeability (permeability coefficient of 1×10 ^-3 cm/sec or less). The pavement thickness is 10cm, the porosity is 10±2% or more, and the compressive strength is 180kg/cm². do it with

1. Step of laying the foundation layer

(1) In general, the road surface is cleared and the crushed stone layer and sub-base layer are laid down.

(2) The cement concrete used is shown in Table 4.

division water cement sand aggregate
(13mm) admixture
(AE reducing agent) latex amount of material
(kg/㎡) 110 275 158 1,620 1.4 2.7

(3) After laying the base layer to a thickness of 12 cm, it was compacted to a thickness of 10 cm with a fork crane and manpower.

2. First packaging coating step

(1) Cement paste having the composition shown in Table 5 below was used.

division water cement emollient acrylic resin Silica sand (No. 8 sand) amount of material
(kg) 200 280 4 200 316

(2) After spraying 2 kg of cement paste per 1 m 2 , compaction was performed with a combi roller within 30 minutes.

3. Natural stone spraying step

Set the particle size of the natural stone to 8mm, select a natural stone with about 20-30% black mixed as a gray layer, and spread it evenly using a spray screen with 25mm mesh balls on the top of the first pavement coating layer. The watering was compacted with a roller, and the test results are shown in Table 6 below.

division compressive strength
(kg/cm²) Porosity (%) freeze thaw
(100 cycle%) thickness
(cm) pitcher coefficient
(cm/sec) Slip resistance (BPM) remark Test result 215 17.5 87.5 10±1 5.5×10 ^-6 55 - standard 180 or more over 10 80 or more - 1×10 ^-3
Below over 40

Compressive strength and freeze-thaw were measured after curing by infiltrating the cement paste in the same amount as the on-site spraying amount, spraying aggregate and compacting the spraying.

Room-temperature asphalt concrete is used for walking because the space is narrow, and natural stone color aggregate with a particle size of 8 mm or less is used, and it has impermeability. and the porosity before the test was 10%.

1. Step of laying the foundation layer

(1) In general, the road surface is cleared and the crushed stone layer and sub-base layer are laid down.

(2) The base layer was formed using room temperature asphalt concrete, and the manufacturing process is as follows.

end. 700 kg of 13 mm aggregate is heated to 130° C. to prepare heated aggregate.

I. 20 kg of asphalt and 2.7 kg of asphalt modifier were added to the heated aggregate to prepare a coating mixture in which the first coating layer was formed.

At this time, 2.7 kg of the asphalt modifier was mixed with 1 kg of SBS and 0.5 kg of naphtha oil, and a modifier mixed with 0.3 kg of EVA and 0.9 kg of petroleum resin was used.

All. 300 kg of regenerated aggregate and 20 kg of calcium carbonate were added to the first coating mixture, mixed, and cooled to room temperature to prepare a base material.

la. After adding 15 kg of asphalt and 7.5 kg of aromatic oil and naphtha oil to 1000 kg of the base agent, respectively, the mixture was mixed to form a second coating layer to prepare room temperature asphalt concrete.

2. Natural stone spraying step

The natural stone was prepared by mixing 65% of red natural stone, 30% of gray natural stone, and 5% of coated color aggregate, and the natural stone was sprayed using a spray screen with a mesh ball of 25 mm.

3. Coating step

division water cement emollient epoxy resin Silica sand (No. 8 sand) amount of material
(kg) 200 320 6 80 394

4. Final Steps

It was carried out immediately after the second pavement coating step, sprayed and compacted more than 5 times using a sprayable tandem roller, covered with plastic and cured for 3 days, and vehicle traffic was carried out after 14 days, and the test results are shown in Table 8 below. It was.

division Stability (N) Flow value (1/100cm) Dynamic stability (times/mm) Porosity (%) pitcher coefficient
(cm/sec) remark Test result 21,550 35 4,750 10.5 4.5×10 ^-5 standard over 7,350 20-40 1000 or more 15 or less 1×10 ^-2
More than

Stability and dynamic stability were measured in a state in which the cement paste was permeated in the same way as the field application amount.

Although the present invention has been described in detail through specific examples, this is intended to describe the present invention in detail, and the room temperature road repair agent and method for manufacturing the same according to the present invention, and a field-produced low-temperature road repair agent using the room temperature road repair agent and It will be said that it is not limited to the manufacturing method, and that modification or improvement is possible by those skilled in the art within the technical spirit of the present invention.

All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

Claims (10)

A foundation layer installation step of forming a foundation layer by installing any one selected from asphalt concrete or cement concrete; A first pavement coating step of forming a first pavement coating layer by spraying cement paste on the upper portion of the base layer; A natural stone spraying step of spraying a natural stone having a particle size of 3 to 19 mm on the surface of the first pavement coating layer; a second pavement coating step of forming a second pavement coating layer by spraying cement paste on the first pavement coating layer sprayed with natural stone; and a finishing step of compacting the surface while spraying water on the second pavement coating layer so that the natural stone can be exposed to the outside within 30 minutes after the second pavement coating layer is installed;
The asphalt concrete is room temperature asphalt concrete installed at room temperature of 15 to 25° C. or low-temperature asphalt concrete installed at 40 to 80° C., and the cement concrete is room temperature including water, cement, sand gravel, admixture, and emulsion resin. installed in
The natural stone spraying step,
a particle size screening process of selecting natural stones to have a particle size of 3 to 19 mm; a watering process of supplying water so that the selected natural stone contains moisture therein to prepare a hydroused natural stone; and a natural stone spraying process of spraying the wetted natural stone on the top of the pavement coating layer using a spraying screen having a mesh ball having a diameter of 20 mm or more.
The spray screen is formed in a mesh shape with an open top and an inner space so that the natural stone can be uniformly sprayed on the first pavement coating layer, and a mesh ball formed at regular intervals in the longitudinal and lateral directions on its bottom surface. A road paving method having a natural stone surface, characterized in that the natural stone is sprayed through.
The method according to claim 1,
Before the first packaging coating step,
Based on 100 parts by weight of cement, 5 to 200 parts by weight of water, 0.5 to 4 parts by weight of an admixture, and 5 to 30 parts by weight of a coating additive are mixed with cement to prepare a cement paste; further comprising;
A road paving method having a natural stone surface, characterized in that the admixture is one selected from a water reducing agent or a high fluidization agent, and the coating additive is an emulsion resin.
3. The method according to claim 2,
In the coating preparation stage,
The cement paste is a road paving method having a natural stone surface, characterized in that it further comprises 50 to 500 parts by weight of silica sand or sand having a particle size of 5 mm or less based on 100 parts by weight of cement.
The method according to claim 1,
In the first and second pavement coating steps,
A road paving method having a natural stone surface, characterized in that the cement paste is sprayed at 0.3-2 kg per 1 m2.
The method according to claim 1,
In the natural stone spraying stage,
Natural stone contains at least one of natural stone color aggregate, coated color aggregate, soybean gravel, elvan stone, and coated color glass, and the coated color aggregate or coated color glass contains 1 to 100 parts by weight of a resin mixture in 100 parts by weight of natural stone or glass and a pigment Prepared by mixing 0.5 to 3 parts by weight, the pigment is at least one selected from inorganic pigments, pearl pigments, photoluminescent pigments, and fluorescent pigments, and the resin mixture is 50 to 500 parts by weight of cement 50 to 500 parts by weight of one resin selected from oil-based resin or emulsion resin. A road paving method having a natural stone surface, characterized in that the weight parts are mixed.
delete delete The method according to claim 1,
It further includes; an asphalt concrete preparation step of preparing the asphalt concrete before the foundation layer laying step;
Asphalt concrete preparation stage
An aggregate heating process of heating 20 to 80 parts by weight of aggregate to a temperature of 100 to 150° C. with respect to 100 parts by weight of the total aggregate determined in the formulation design to prepare heated aggregate;
A first coating process of preparing a coating mixture in which a first coating layer is formed by adding 1 to 4 parts by weight of asphalt and 0.001 to 0.05 parts by weight of an asphalt modifier to the heated aggregate based on 100 parts by weight of the total aggregate and mixing;
Among the total aggregates determined in the formulation design, the remaining aggregate at room temperature used in the first coating process is added to the coating mixture, and 0.1 to 0.5 parts by weight of filler is mixed with respect to 100 parts by weight of the total aggregate to prevent particles from sticking together. A mixed cooling process of cooling to room temperature to prepare a base material; and
A second coating process of manufacturing asphalt concrete by adding 50-100 parts by weight of process oil based on 100 parts by weight of asphalt to the base agent to form a second coating layer on the surface of the base agent; road pavement having a natural stone surface, including; Way.
9. The method of claim 8,
The asphalt modifier is prepared by mixing a reforming base, a process oil, and a stiffness modifier,
The modification base is at least one selected from styrene-butadiene-styrene (SBS) or styrene isoprene styrene (SIS), the process oil is at least one selected from aroma oil, naphtha oil, and paraffin oil, and the stiffness modifier has a particle size of 3 mm A road paving method having a natural stone surface, characterized in that at least one selected from the following and LDPE (low density polyethylene), HDPE (high density polyethylene), and EVA (ethylene-vinyl acetate copolymer).
The method according to claim 1,
cement concrete,
A road paving method having a natural stone surface, characterized in that it is either water permeable cement concrete having a porosity of 15% or more or impermeable cement concrete having a porosity of 8 to 14%.

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