KR101079724B1 - Method constructing grooves for non-slip of paved road - Google Patents

Abstract

The present invention relates to a groove construction method for preventing slippage of a pavement road surface, comprising: cleaning and drying a road surface of an asphalt or concrete to be worked; Applying a primer to the road surface; Attaching barrier films in parallel in the transverse or longitudinal direction of the road surface; Applying a resin on the primer and the barrier film; Spraying a friction increasing material on the resin; Removing the barrier film so that the applied primer is exposed to a road surface; And applying a coating material to the friction increasing material and the exposed primer. According to the present invention, since the grooving can be performed without damaging the pavement surface, it is possible to reduce the time and cost for forming the grooving by partially cutting the pavement surface, and to prevent cracking of the entire pavement due to cutting of the pavement surface. There is an effect that can be prevented.

Asphalt, concrete, road, pavement, groove, primer, paint

Description

Groove construction method to prevent slippage of pavement surface {METHOD CONSTRUCTING GROOVES FOR NON-SLIP OF PAVED ROAD}

The present invention relates to a groove construction method for preventing slippage of a pavement road surface, and more particularly, a frictional force increasing material is installed on a pavement road surface at a predetermined thickness, and the frictional force increasing material is constructed at a predetermined interval between the frictional force increasing materials. By forming a groove, the present invention relates to a groove construction method for preventing slipping of a paved road surface, which can be grooved without damaging the paved road surface.

In general, it is not necessary to use a special anti-slip mixture if it is a heat mixture with sufficient mixing design and construction in consideration of the materials used, but it is not necessary to use a special anti-slip mixture, but it is necessary to use an emergency slope section, a curved section, an intersection point of a slope section, a misalignment section, a front section of a pedestrian crossing with many pedestrians, etc. In places requiring the same attention and in places where severe slippage is expected, such as a snowy cold region, it is necessary to take measures against slippage.

As a pavement method of increasing the sliding resistance, there is a method of increasing the sliding resistance of the mixture itself, a method of spraying or adhering hard aggregate on the road surface, and a method of roughening the surface by grooving.

The method of increasing the sliding resistance of the mixture itself is a method of using modified asphalt to increase the durability of the road surface, or using an open or modified asphalt mixture to secure the roughness of the road surface, and to harden all or part of the aggregate. There is a method using the aggregate, which is a mixed aggregate of Topeka, using a strong aggregate and a soft aggregate mixed with a strong aggregate after a certain period of time to exhibit an anti-slip effect. This is to prevent the slip by using the protruding fine aggregate, vibration and noise occurs when driving the vehicle due to the protruding fine aggregate is not suitable as a road paving method for high speed driving.

The method of spraying or adhering hard aggregate on the road surface generally uses a particle diameter in the range of 1.0 to 3.3 mm on the surface of the mixture immediately after installation, or a method of applying voltage by spraying 5 mm hard aggregate, or as a binder. There is a knit method to bond by using. This method has a structural problem of having a lower anti-slip effect than the method of increasing the slip resistance of the mixture itself.

The grooving method is an SM method that is a concrete pavement or a mixture of emulsified asphalt and crushed stone to increase the sliding resistance and drainage ability of the pavement to prevent hydroplaning when water film is formed on the road surface. In order to prevent sliding accidents, grooves are made on the pavement surface, also called safety equipment installation space.

This grooving method is applied to prevent slipping, water film phenomenon, and slip prevention by improving drainage, preventing ice freezing, improving driving safety, and reducing noise.In fact, according to the Korea Transport Institute, road departure accidents after installing grooves It is reported to have decreased by about 38%.

1 shows a cross-sectional view of a road on which a general grooving method is constructed.

As shown, the grooves of the pavement are divided into texturing and grooving according to the width of the pavement unit spacing. The width of the unit pattern from the center of the valley to the center of the next valley ( The length of W) is more than 1.7 mm in grooving, and smaller cases are classified as texturing.

When the grooving is classified by pattern, the grooving is divided into a longitudinal grooving which forms a groove horizontally with a driving direction of a vehicle or an aircraft, and a lateral grooving that cuts perpendicularly to the traveling direction.

Longitudinal grooves for longitudinal grooving are suitable for curves, slopes, straight roads and overpasses that are susceptible to side winds, which increase the grip of tires and stabilize steering during cornering, and are resistant to side winds on straight roads. Prevent accidents.

The horizontal groove of the lateral grooving is applied to prevent drowsy driving by warning sound and vibration transmitted from the tire when driving, and to reduce the warning, and to reduce the braking distance at the entrance section of intersection, pedestrian crossing, toll station, and wet road surface in rainy weather. can do.

Lateral grooving is applied for the purpose of deceleration warning effect by shortening the braking distance, intentional noise generation and vibration, and is applied to the flat section of the section with weak drainage and the freezing accident in winter. .

Up to now, only lateral grooving has been applied in Korea to shorten braking distance, but curved longitudinal grooving method has excellent effects in driver's facility inducing effect and visibility, noise reduction, driving convenience and driving traction. It is widely applied to sections, slope sections, tunnel sections, etc., greatly contributing to the reduction of traffic accidents.

In this grooving method, various additional methods have been proposed in order to increase friction and meet expected effects.

For example, the 'dust-proof coating grooving method of the road surface' of Korean Patent Publication No. 10-2005-0047225 and the 'groove construction method of the road for children's protected area' of Patent No. 10-681878 are known.

In the former case, in the road surface forming method in which grooving is applied to the pavement surface, a groove coating step of applying a coating coating to the groove formed through the grooving step is included. This method, as shown in Fig. 2, is to form a groove and then apply a resin coating to the surface on which the groove is subsequently formed in order to promote road surface friction.

In this construction method, as shown in FIG. 2, the phenomenon that the grooves 2 formed by the grooves are filled with the resin 1 by the resin 1 applied after the grooving construction occurs, thereby preventing slippage and visibility. It is difficult to secure and the drainage effect is also reduced.

In the latter case, in the road grooving method of forming a plurality of continuous grooves on the pavement surface, a road cleaning step of removing foreign matter from the road and a series of distinctive colors distinguished from the general road surface on a completely dried road surface The paint layer forming step of applying the paint on the surface of the road surface, while cutting the continuous groove in a direction perpendicular to the driving direction of the road on which the paint layer is formed to absorb the dust generated at the same time, but the depth and width of the groove And a series of steps for forming the grooves having a depth of about 4 to 5 mm, a width of about 9 mm, and an adjacent groove of about 50 mm so that the ratio of adjacent grooves is about 1: 2: 10. Characterized in that consists of.

This construction method prevents grooves from clogging as in the above example by forming a paint layer on the road surface and then forming a groove. However, since the grooved structure has a certain groove formed at regular intervals from the road surface, there is a structural problem that the durability of the grooved structure is weakened and the buffering function cannot be exerted. There were limitations that could not improve the durability of the grooving structure or improve the cushioning function and tension.

In addition, the method of applying a frictional force increasing material over the entire road surface of the area where the speed of the vehicle, such as a child protection area, which is required to slow down the vehicle or the area where the sliding may be caused, is not conventionally a groove construction method (see FIG. 3). there was. However, in such a method, the shrinkage and expansion characteristics of the pavement road surface and the frictional force increasing material are different from each other, and thus there is a problem in that the anti-slip material is damaged during the shrinkage or expansion of the pavement road surface. In other words, since the shrinkage or expansion of the asphalt or concrete pavement material is made according to the season, if the degree of shrinkage or expansion of the asphalt or concrete and that of the friction increasing material differ from each other, there is a problem that the friction increasing material is separated from the pavement surface after construction. do. In addition, there is no place where the air or the like in the asphalt or concrete escapes, which is the cause of the occurrence of defects in the friction increasing material.

The present invention is to solve the above problems, an object of the present invention is to provide a groove construction method for preventing slipping of the pavement surface that can be grooved without damaging the pavement surface.

Another object of the present invention is to provide a groove construction method for preventing slippage of a pavement road surface that can absorb shrinkage or expansion of the pavement road surface by a groove.

Still another object of the present invention is to provide a groove construction method for preventing slippage of a pavement road surface for enhancing visibility by a driver.

According to a feature of the present invention for achieving the above object, the first invention relates to a groove construction method for preventing slipping of the pavement road surface, the step of cleaning and drying the road surface of the asphalt or concrete to be worked; Applying a primer to the road surface; Attaching barrier films in parallel in at least one of the transverse and longitudinal directions of the road surface; Applying a resin on the primer and the barrier film; Spraying a friction increasing material on the resin; Removing the barrier film so that the applied primer is exposed to a road surface; And applying a coating material to the friction increasing material and the exposed primer.

At this time, it is preferable to use the primer having a color.

In the second invention, in the first invention, in the attachment of the barrier film, the barrier film has a width of 1 to 10 cm, and the barrier film is attached at intervals of 10 to 30 cm in the transverse direction or spaced 3 to 15 cm in the longitudinal direction. It is characterized in that attached to.

The third invention is characterized in that in the second invention, the barrier film is attached in a matrix form along the transverse and longitudinal directions of the road surface.

In a fourth invention, in the third invention, the barrier film is an adhesive tape.

The fifth invention, in the first invention, the second invention or the third invention, after the barrier film removing step, characterized in that for applying the suboptimal paint to the exposed primer.

The sixth invention is characterized in that in the first invention, the second invention or the third invention, the friction increasing material is one of slug, silica, sand and SIC powder.

According to the groove construction method for preventing slippage of the pavement road surface according to the present invention, grooving can be performed without damaging the pavement road surface, thereby reducing the time and cost for partially cutting the pavement road surface to form grooving. In addition, there is an effect that can prevent the entire pavement crack due to the cutting of the pavement road surface.

In addition, according to the present invention, it is possible to absorb the shrinkage or expansion of the pavement surface by the groove, there is an advantage that can minimize the occurrence of cracks even in long-term use.

In addition, according to the present invention, there is an advantage that it is possible to enhance the visibility by the driver to drive safe day and night. In particular, the lane paint applied in the groove has a high brightness function, so that when the vehicle approaches the groove at night, the driver's light is reflected on the lane paint so that the driver can recognize the presence of the groove in advance. Can help the driver to drive safely.

Hereinafter, the groove construction method for preventing slippage of the pavement road surface according to the present invention will be described with reference to the accompanying drawings.

Figure 4 is a flow chart illustrating a groove construction method for preventing slipping of the pavement road surface according to the present invention, Figure 5 is a perspective view showing a construction state of the groove for slipping the pavement road surface according to the present invention, Figure 6 5 is a cross-sectional view taken along the line AA ′ of FIG. 5, and FIG. 7 is a perspective view illustrating the construction state of each step.

As shown, the groove construction method for preventing slippage of the pavement road surface according to the present invention is started from the step of cleaning the road surface 10 of the asphalt or concrete to be worked. At this time, the cleaning is to remove foreign matters such as dust from the work target road surface 10, and when cleaning using a liquid such as water, the road surface 10 should be completely dried in order to perform the next step (step S10 ).

When the cleaning step for the road surface 10 is completed as described above, as shown in FIG. 7A, the primer 20 is applied to the road surface 10. The primer 20 has good adhesion to the asphalt or concrete pavement road surface 10 or aggregate, and can be uniformly coated with rubber, iron leggings, etc., and has viscosity, wear resistance, impact resistance, durability, Water resistance, oil resistance and chemical resistance should be good. In addition, the primer 20 has a high elasticity to adapt to the deformation of the asphalt or concrete and climatic conditions, the curing time should be secured for at least 2 hours during natural curing at an ambient temperature of 6 ℃ or more.

The coating thickness of the primer 20 is not particularly limited, but is preferably about 2 to 3 mm. And since the primer 20 may be coated and used without applying the lane paint 60, it is preferable to have a specific color, for example, white or yellow, rather than transparent (step S20).

Next, the blocking film 30 is attached on the primer 20. The blocking film 30 may be attached only in one direction of the road surface 10, such as in the transverse direction or the longitudinal direction of the road surface 10, and as shown in FIG. 7B, to form a matrix in the transverse direction and the longitudinal direction. It may be attached. In this case, the blocking film 30 may be attached to the primer 20, and the barrier film 30 may be relatively easily removed from the primer 20, and preferably, an adhesive tape is used.

The barrier layer 30 preferably has a width of approximately 1 to 10 cm, and the barrier layer 30 is attached at intervals of 10 to 30 cm in the lateral direction, and the barrier layer 30 is spaced at intervals of 3 to 15 cm in the longitudinal direction. Attach 30).

In this case, the barrier film 30 is attached in the lateral direction of the road surface 10 to construct the lateral grooving, and to attach the barrier film 30 in the longitudinal direction to construct the longitudinal grooving. In addition, the attachment in the form of a matrix in the transverse direction and the longitudinal direction is intended to exhibit the effects of both the transverse and longitudinal grooving.

That is, the lateral grooving shortens the braking distance, generates intentional driving noise and vibration, and is mainly used for entrance sections of intersections, crosswalks, toll gates, and the like for deceleration warning purposes. On the other hand, longitudinal grooving is mainly for curves, slopes, straight roads, overpasses, etc. for the purpose of improving the driver's gaze-inducing effect and visual recognition, noise reduction, driving convenience, and driving traction. It is used (step S30).

Next, as shown in FIG. 7C, the resin 40 is coated on the primer 20 and the barrier film 30. Resin 40 is generally an epoxy resin and is applied to a thickness of approximately 3-4 mm. The epoxy resin 40 has a strong adhesion to the road surface 10 and the curing time is within about 6 hours, it is preferable to select a kind having sufficient tensile strength and elongation after curing. However, in the case of low temperature construction, an acrylic resin may be used as the resin 40 (step S40).

On the other hand, as shown in Figure 7d, the friction force increasing material 50 is sprayed on the resin 40. Slugger, silica sand, sand, SIC powder is used as the friction increasing material (50). The friction force increasing material 50 is evenly sprayed at 2-3 kg per m 2 using an airless spray of low pressure (20-25 PSI) before the resin 40 is cured.

The friction force increasing material 50 prevents water agglomeration of the road surface 10 to suppress water film phenomenon, increase frictional force of automobile tires, improve sliding resistance and steering, and increase the wear resistance, impact resistance, and water solubility of the epoxy resin. It serves to increase the corrosion resistance to the penetration of the chemical resistance resin (step S50).

Next, as shown in FIG. 7E, the applied primer 20 is exposed to the road surface 10 by removing the blocking film 30 attached above. In this case, the resin 40 and the frictional force increasing material 50 stacked on the barrier film 30 are also removed, thereby forming a groove between the portion where the frictional force increasing material 50 remains and the removed portion. That is, grooves are formed on the road surface 10 depending on the presence or absence of the friction force increasing material 50 (step S60).

In this state, the coating material 70 is applied to the friction force increasing material 50 and the exposed primer 20, thereby completing the construction. In this case, various kinds of coating materials 70 may be used, but it is preferable to use an unsaturated resin (step S80, see FIG. 7F).

When the curing of the coating material 70 is completed, the road surface 10 may be opened to allow passage of the vehicle. Alternatively, as in this embodiment, the step of applying the lane coating 60 to the exposed primer 20 may be further performed before the coating material 70 construction. That is, since the primer 20 performs a function of extending the life of the lane paint 60 applied on the primer 20, the lane paint 60 having a color on the exposed primer 20. The application allows the driver to recognize the presence of the groove before reaching the groove (see FIG. 7G).

Of course, although the primer 20 itself used in the present invention may exhibit a color, the lane paint 60 has better reflection performance for light than the primer 20, thereby improving visibility to the driver. That is, the lane coating 60 according to the present invention has a high brightness function, and it is preferable to use the photoluminescent paint, the luminous paint or the retroreflective paint. In particular, retroreflective paint is applied to paint the lines such as road markings at night so that the lines and the like can be easily seen at night, and the glass balls of diameter 1mm and up are sprayed so that 1/2 to 2/3 are submerged in the paint. When you illuminate the car's headlights, the light is reflected and the driver sees a bright line.

At this time, the color of the lane paint 60 will generally use white or yellow, but is not particularly limited thereto.

In the case of applying the lane coating 60 in this way, it is preferable to open the traffic on the road surface 10 after the lane coating 60 has been completely cured so that the vehicle can pass (step S70).

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

1 is a cross-sectional view of an asphalt pavement showing a general grooving construction state,

Figure 2 is a cross-sectional view of the asphalt pavement showing the grooving construction state according to the prior art,

Figure 3 is a photograph showing a state in which a friction force increasing material is installed on the pavement surface according to the prior art,

4 is a flowchart illustrating a groove construction method for preventing slippage of a pavement road surface according to the present invention;

5 is a perspective view showing a state in which the groove is constructed according to the present invention,

6 is a cross-sectional view taken along the line AA ′ of FIG. 5;

7 is a perspective view showing the construction state of each step.

Claims (6)

Cleaning and drying the road surface of the target asphalt or concrete; Applying a primer to the road surface; Attaching barrier films in parallel in at least one of the transverse and longitudinal directions of the road surface; Applying a resin on the primer and the barrier film; Spraying a friction increasing material on the resin; Removing the barrier film so that the applied primer is exposed to a road surface; And And applying a coating material to the friction increasing material and the exposed primer. The groove construction method for preventing slippage of a pavement surface. The method of claim 1, In the step of attaching the barrier film, the barrier film has a width of 1 ~ 10cm, the barrier film is attached to the interval of 10 ~ 30cm in the transverse direction or in the longitudinal direction of the pavement, characterized in that attached to the interval of 3 ~ 15cm Groove construction method to prevent slipping. 3. The method of claim 2, The blocking film is a groove construction method for preventing slipping of the pavement surface, characterized in that attached to the matrix in the transverse direction and longitudinal direction of the road surface. The method of claim 3, The blocking film is a groove construction method for preventing slipping of the pavement surface, characterized in that the adhesive tape. The method according to claim 1, 2 or 3, After the barrier film removing step, the groove construction method for preventing slipping of the pavement surface, characterized in that for applying the lane coating to the exposed primer. The method according to claim 1, 2 or 3, The friction increasing material is a slugger, silica sand, sand, the groove construction method for preventing slip of the pavement surface, characterized in that one of the powder.

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