KR100505302B1 - Method for reinforcement work of a paved road and a pavment structure thereof - Google Patents

Abstract

The present invention relates to a method of reinforcing a road pavement structure and a road pavement structure using the method.

The present invention embeds a reinforcing material 20 including a urethane mesh in an adhesive mortar 10 applied to a predetermined portion of the surface of the upper layer of the road surface, and coats the primer 30 on the adhesive mortar 10. 30) it provides a road pavement structure, characterized in that the urethane chip is installed and chopped in the upper layer to form the urethane surface layer 40 of the elastic body.

The present invention can form a new elastic surface layer made of urethane on the sidewalk block or permeable concrete upper surface of the existing construction can enhance the durability of the road surface, and can improve the city view.

Description

Reinforcement method of road pavement structure and road pavement structure using method {Method for reinforcement work of a paved road and a pavment structure

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road pavement method, in particular, by adhering an adhesive mortar on a surface of an existing road surface that has been flattened to prevent corrosion of the road surface and separation by moisture and other foreign substances, while impregnating a urethane net in the adhesive mortar The present invention relates to a method of reinforcing road pavement structures without defects because the pavement structure does not easily fall off due to the urging of urethane chips, thereby providing a flexible durability to the load, and a road pavement structure using the method.

In general, sidewalk blocks and roads for driving vehicles need the ability to improve permeability and urban aesthetics in terms of urban engineering, and in terms of construction and economics, robust durability against ground subsidence and loads such as vehicle weight. Must have

Groundwater must be infiltrated under normal conditions to preserve groundwater and maintain the normal strength of the ground.

However, as the city grows and expands, asphalt and concrete pavements cover most of the earth's surface, preventing water from infiltrating naturally into the ground, thereby drastically reducing the amount of groundwater, causing ground to subside and slowing the growth of trees. It is changing the ecological environment of the underground organisms, and if there is a heavy rain in the pavement area, it is difficult to drain, causing problems such as disturbing the operation or even flooding the rivers. Therefore, when paving the road, a pavement method should be considered in which rainwater can naturally penetrate the ground. Underwater flooding of rainwater is important for the safe operation of vehicles by preventing freezing of road surfaces during the winter months.

According to these demands, in recent years, urban development and landscaping work are required to have permeable pavement for the purpose of introducing rainwater into the ground naturally. Various products such as permeable asphalt or permeable concrete have been developed. The addition of colored paints has improved the bleak urban environment in which roads have been paved by conventional asphalt or concrete.

However, permeable asphalt changes rapidly according to the climate, and not long after construction, the physical properties except permeability are not significantly different from general asphalt. In other words, general asphalt has brittleness at high temperatures below freezing during winter, causing damage due to cracks. It hardens to form an irregular road surface. The same phenomenon is still observed in permeable asphalt.

In the case of permeable concrete, there are no changes due to the climate, but the pores are easily clogged by dust or pollutants. To solve this problem, if the pores are large, the strength is reduced due to the high pores, so that there is a limitation that it cannot be applied to the general road.

Known permeable concrete can satisfy the permeation efficiency as it is, but considering the porosity for permeation, the strength is relatively low, the bending strength is about 20 ~ 25kg / ㎠ is provided as a standard. While permeable concrete with such bending strength becomes permeable, cracking occurs due to impact and load acting on the road surface and bending stress acting on the space to be settled as the fine settlement of the ground occurs as a long-term use.

In addition, a road surface such as concrete may impact tires or pedestrians 'walking, resulting in severe vibration and noise in the vehicle, and pedestrians' impact on the spine and cerebrum from the back of the foot, which may adversely affect public health. There is a problem.

In addition, conventional permeable concrete or permeable asphalt used color paints to improve the aesthetics of the city, and attempted to improve the road environment, which has been mostly gray color until now, but such an attempt can only be constructed with a single color road. As a result, it was not very effective in improving the urban aesthetics, but rather, the harmful substances were leaked, causing pollution to the environment.

 What is required to be improved from conventional permeable concrete and asphalt is to give the bending strength and tensile strength which are desperately required in the paving work, and to improve the degree of crack prevention, cushioning and urban aesthetics of the finished package. Whether or not it can.

However, the conventional permeable concrete itself composed of a mixture of aggregate and cement could not satisfy all of the above conditions.

Therefore, if a new surface layer is formed on the surface of the existing pavement, and the surface layer can flexibly respond to bending stress and compression stress by itself and can alleviate the impact from the vehicle while having its own durability, the conventional road It will be able to solve the difficulties caused by the repair and construction caused by the durability problem in the.

Most sidewalk blocks and roads on roads are corroded, always moist, and attached to dust and other debris, which is very likely to separate the road surface from the primer. After construction, there is a high possibility of a defect occurring.

It is an object of the present invention to form a surface layer comprising a reinforcement made of urethane mesh and civil engineering fibers on top of the primer while improving the bonding strength by laying an adhesive mortar on the road surface, thereby providing cracks with durability, compressive strength and bending strength. It is to provide a method of reinforcing a road pavement structure that can be prevented and a road pavement structure using the method.

Another object of the present invention is to install an adhesive mortar on the surface of the road to improve the binding force with the primer while forming a urethane resin layer on the top of the reinforcement made of a urethane net, or civil fiber fibers to the buffer to act as a buffer It is to provide a method of reinforcing a road pavement structure and a road pavement structure using the method.

Another object of the present invention is to install an adhesive mortar on the road surface to improve the binding strength with the primer while forming a urethane resin layer on top of the reinforcement made of urethane network, or civil fiber fibers on the top of the existing general roads It is to provide a method of reinforcing a road pavement structure that can be easily performed at low cost and easy to repair the permeable road including, and a road pavement structure using the method.

Permeable road paving method of the present invention for achieving the above object,

A first step (S1) of inspecting the surface of the constructed road to flatten, curve, and clean the curvature of the road surface;

A second step (S2) of applying adhesive mortar to the flat work surface arranged in the first step (S1);

A third step (S3) of attaching a reinforcing material to the upper part of the adhesive mortar constructed in the second step (S2);

A fourth step (S4) of applying a primer on the reinforcing material attached to the road surface in the third step (S3);

A fifth step (S5) of disposing a urethane chip in which a binder is mixed on a surface on which the primer is applied in the fourth step (S4);

Forming a new urethane surface layer comprising a reinforcement on the existing road surface by the sixth step (S6) to cure by curing the urethane layer laid in the fifth step (S5).

In the road pavement structure by the reinforcement method of the road pavement structure, the reinforcing material 20 is embedded in the adhesive mortar 10 applied to a predetermined portion of the surface of the upper layer of the road surface, and the primer 30 on the adhesive mortar 10. It is characterized in that the urethane chip is laid and compacted on the upper layer of the primer 30, the urethane surface layer 40 of the elastic body is formed.

As such, the present invention forms an adhesive mortar layer between primers installed to install a urethane chip on the surface of a sidewalk block or a vehicle road, thereby strengthening the binding force of the reinforcement materials such as the primer and the urethane mesh against corrosion and moisture and other foreign matters on the road surface. The urethane chips, which have been compacted, are not separated from each other, and thus durability can be maintained even after construction, thereby eliminating problems associated with defect repair.

An embodiment of the present invention will be described in detail as follows.

2 and 3 show the state of the pavement structure formed by the present invention.

First stage

As permeable concrete previously constructed, 260 to 380 kg of portland cement per m3, 80 to 180 kg of water, and the weight ratio of 13 mm sieve is 100%, and the weight ratio of 8 mm sieve is 70-100% The percent by weight of the 2.5 mm sieve is 1400-2200 kg of aggregate having a particle size distribution of l-15%; 2 to 35 kg of admixture; A concrete mixture composed of 7 to 20 kg of pigment is installed and permeable concrete (100) having a porosity of 10 to 30% is inspected, and the surface of the road surface is inspected, and a grader for deformations such as cracks and bends is generated. Use a scraper or the like to flatten, clean, and clean up.

2nd step

The adhesive mortar 10 is applied to the flat work surface arranged in the first step S1.

The adhesive mortar 10 is suitable for KS F 4716 and uses a mixture of portland cement uniformly with acrylic synthetic resin.

3rd step

The reinforcing material 20 is attached to the adhesive mortar 10 constructed in the second step (S2).

The reinforcing material 20 attached to the adhesive mortar 10 is placed on the uncured adhesive mortar, so that the adhesive mortar is wrapped slowly. This adhesive mortar is gradually cured while receiving the reinforcing material 20, 1 to 3 hours.

The reinforcing material attached to the adhesive mortar 10 may be a mesh made of urethane or civil fiber.

The thickness of the urethane used here is 0.2 ~ 0.3mm, the grid spacing is a mesh-like structure consisting of a mesh of 0.5 ~ 1.5mm.

Geosynthetic fiber reinforcement materials are synthetic synthetic fibers such as nylon, polyester, polyacrynitril, polyethylene, polypropylene, rayon, spandex, etc. Porous fabrics formed by weaving the same synthetic fibers, such as geogrids, geonets and the like.

Geogrid is manufactured by specially making holes in the shape of a lattice grid while compressing the polymer into a plate shape and drawing it in a single or biaxial direction. In the drawing process, small holes are usually elliptical or circular with a size of 10 to 50 mm. It has a large hole in the shape and the molecular arrangement is well adjusted, resulting in high strength.

The geonet is made of polyethylene and has two sets of parallel structures that intersect at an angle. The strands at each intersection are melted and glued together and consist of semi-rigid monofilaments. This is a widely spread three-dimensional tangled structure.

In addition, the reinforcing material may be used for the purpose of preventing the cracking of concrete, and improve the mechanical properties by using the fiber composite material and non-woven fabric and fabric for concrete reinforcement. As the reinforcing fibers, carbon fibers, metal fibers, aramid fibers and the like may be used.

By embedding such reinforcement in the newly constructed surface layer, improvements such as increased resistance to cracking, sharing of cracked portions, increased resistance to thermal changes and heat shrinkage, and improved durability can be expected.

In addition, when attaching the reinforcing material to the adhesive mortar 10, it is desirable to allow the reinforcing material to fuse with the adhesive mortar aggregate if possible.

In general, the tensile properties, fatigue properties, creep properties, concrete and reinforcement of the reinforcement, depending on whether the construction is carried out by the method of the present invention whether the sidewalk block, ordinary concrete road surface, or permeable concrete Adherence, etc., should be carefully reviewed and applied.

4th step

In the third step S3, the reinforcing material 20 is accommodated and the conventional primer 30 is applied to the upper surface of the hardened adhesive mortar.

5th step

In the fourth step (S4), the urethane chip in which the binder is mixed on the surface on which the primer 30 is applied is laid by roller or attraction force to form the urethane surface layer 40.

The urethane chip in which the binder is mixed preferably has a 100% through weight percentage of the 8 mm sieves, a 70% to 100% through weight percentage of the 5 mm sieves, and a 10 to 15% particle size distribution of the 2.5 mm sieves. 5-15 weight% of binders are mix | blended with respect to 85-95 weight% of such urethane chips.

As the binder, all admixtures including natural rubber and synthetic rubber, which can be added to cement mortar, for example, SBN, NBR, epoxy, acrylic, urethane resins can be used. Such binders may also typically be added as an emulsion.

The urethane chip is usually 100% by weight of the 8mm sieve, but one having a particle size larger than this may be used. However, when a large amount of urethane chips that do not pass through the 8mm sieve is included, it is preferable to be up to 5% or less per cubic meter since the appearance is uneven and the road surface is not uniform.

6th step

The urethane chip installed in the fifth step (S5) is compacted with a constant temperature roller, and the flattening operation using the rotor, and then cured for 4-6 hours to form a new urethane surface layer 40 on the existing road surface.

The urethane chip, which is an essential requirement in the present invention, has a color that is itself, and thus does not need to separately mix pigments conventionally added to concrete, and does not apply an aqueous inorganic paint or an oil-based epoxy paint to the installed surface. You do not have to.

According to the present invention, the road pavement structure in which the reinforcing material and the urethane surface layer are formed, the reinforcing material accommodated in the adhesive mortar increases the binding force with the adhesive mortar, thereby improving bending strength and compressive strength, thereby preventing settlement, warping, cracking, and detachment. .

In addition, as it is installed in the permeable concrete construction, it does not interfere with the normal porosity of 10-30% of the existing permeable concrete, and maintains an excellent permeability coefficient. Sufficient bending strength of 30kg / ㎠ and 100 ~ 300kg / ㎠ compressive strength can be maintained, which represents about 20-30% performance improvement compared to the existing road.

As described above, the present invention forms a reinforcement material including a urethane mesh on the surface layer of a road block or a permeable concrete pavement, and then applies a urethane chip to the upper surface thereof by applying a primer, thereby increasing friction and sliding phenomenon. There is no

In addition, it is possible to improve the mechanical stability of the road structure by exerting flexibility in compressive and bending stresses even if the paging progresses due to the binding force that improves the bending strength and tensile strength without impairing the permeability of the permeable concrete. The bonding and adhesion can be improved to prevent cracking.

Therefore, since there is no defect after construction, it can be effectively applied to repairing road paving or pedestrian sidewalk blocks that are newly installed, as well as paving roads constructed on soft ground.

1 is a flowchart showing a process sequence of an embodiment of the present invention.

Figure 2 is a perspective view separated some of the structure of the present invention

3 is a cross-sectional view of an embodiment of the present invention.

4 is an enlarged view of a portion A of FIG.

* Explanation of symbols for the main parts of the drawings

10: adhesive mortar 20: reinforcing material

30: primer 40: urethane surface layer

100: permeable concrete

Claims (4)

In inspecting the surface of the constructed road to flatten the curvature of the road surface, clean and clean it up, apply primer, and form a road pavement structure in which the binder is mixed with urethane chips. Applying an adhesive mortar on a flat working surface to install a urethane network to the urethane network is accommodated in the adhesive mortar and cured for 1 to 3 hours, and then to apply a primer on the cured adhesive mortar to attach a urethane network Reinforcement method of the road pavement structure, characterized in that. In inspecting the surface of the constructed road to flatten the curvature of the road surface, clean and clean it up, apply primer, and form a road pavement structure in which the binder is mixed with urethane chips. Road pavement structure, characterized in that the adhesive mortar containing the reinforcing material is formed between the flat working surface and the primer. 3. The pavement structure of claim 2, wherein the reinforcement is made of urethane net. The road pavement structure of claim 2, wherein the reinforcing material is selected from porous fabrics formed by weaving synthetic fibers such as nylon, polyester, polyacrylonitrile, polyethylene, polypropylene, rayon, spandex, and the like.