KR101069820B1 - Repair method of concrete pavement - Google Patents

Abstract

A concrete pavement repair method is disclosed. Concrete pavement repair method according to an embodiment of the present invention, in the concrete pavement method, using a pavement treatment vehicle equipped with a water jet device for spraying high pressure water and a suction device for suctioning sludge in the rear, to crush the concrete degradation unit Deterioration unit removal step of suction removal at the same time; A concrete placing step of placing concrete on a part where sludge is eliminated in the deterioration part removing step; And a finishing step of finishing the surface of the concrete poured in the concrete pouring step so as to be flat with the existing concrete pavement surface.

Description

Repair method of concrete pavement

The present invention relates to a repair method for concrete pavement.

In general, the road surface of concrete pavement is subject to plastic deformation, detachment, freezing, thawing and freezing due to the external environment, that is, continuous load transfer, ground behavior and momentary impact due to severe temperature change and traffic load. Cracks may occur in the vertical or horizontal direction on the pavement surface due to the penetration of chloride used to remove the palladium.

Once these cracks occur, air and moisture can penetrate into the micro cracks of the cracks, accelerating the crack progression and worsening the failure state, and accumulating fatigue due to expansion, shrinkage and uneven settlement of the concrete. In this state, when an overloaded vehicle passes the road, the concrete road surface may be cracked or damaged.

In general, concrete roads are cut at regular intervals with a cutter to form grooves, which are called joints, and these joints are constructed to prevent the concrete roads from being damaged by expansion or contraction according to the season.

However, when the joint is filled with water, there is a high risk of damaging the concrete road around the joint while freezing and expanding in winter, and when the fine particles such as sand and soil are filled, the concrete road cannot be expanded and can be broken.

In addition, the tire is applied to the edge of the joint as the vehicle passes by the edge of the joint is damaged or detached and damaged in the expanded state of the joint, the concrete road surface becomes uneven and uneven, if this phenomenon persists As a result, road peeling and microcracks occur around the joint.

A lot of research and development is being carried out on the construction method and materials for repairing cracks and joints of concrete pavement, but according to the conventional concrete pavement repair method, considerable time is delayed until opening of repair road. There was a problem that obstructs the flow of traffic.

In addition, since a large number of highly skilled workers are required to construct a large number of working hours by manual work, construction cost is reduced due to increase in labor cost and delayed work time, and road life is reduced due to deterioration in construction quality of unskilled workers. There were various problems such as being shortened.

The present invention devised to solve the problems as described above, while reducing the time required for the repair work, it is intended to disclose a concrete pavement repair method that can ensure the quality of the concrete repair, significantly reducing the construction cost .

The present invention for achieving the object as described above, in the concrete pavement method, is installed on the driving body 501, the rear of the driving body 501 and sprays high-pressure water toward the concrete road surface (CR) to the concrete road surface ( The water jet apparatus 520 for chipping CR and the water jet apparatus in a downwardly open shape to form around the water jet apparatus 520 a suction port for suctioning sludge including concrete crushed matter chipped by the water jet apparatus 520. 520 has a bracket 521 spaced apart from the outside and a bellows structure capable of stretching and flexing to form a transport path of the concrete crushed material sucked through the suction port, and the connection portion of the bracket 521 is detachably assembled. By using the pavement treatment vehicle 500 equipped with the suction device 540 having the suction hose 541, the adhesion between the existing concrete and the newly poured concrete can be increased. The concrete deterioration unit is crushed to form the unevenness for the suction and at the same time to remove the concrete debris, and when the suction device 540 only needs to be operated for the treatment of the contaminated portion around the pavement repairing part currently in operation, the suction hose ( A deterioration unit removing step (S1) of using the independent portion of the water jet apparatus 520 by removing the 540 from the bracket 521; Placing concrete containing 8 to 16% by weight of cement, 3 to 6% by weight of water, 28 to 59% by weight of coarse aggregate, and 30 to 50% by weight of coarse aggregate, on the part where sludge was removed in the deterioration part removing step (S1). Concrete pouring step (S2); The concrete pavement repair method comprising a; and the finishing step (S3) to finish the surface of the concrete poured in the concrete placing step (S2) to be flat with the existing concrete pavement surface as the technical gist.
Here, the pavement processing vehicle 500, the rail 533 is installed in the transverse direction at the rear of the traveling body 501, the waterjet device 520 and the suction device 540 is coupled to the rail 533 Sliding device 530 is provided with a slider 531 to be moved along the sliding; is configured to include, the deterioration step removing step (S1), the pavement treatment vehicle 500 along the vertical joint of the concrete pavement While driving, when the waterjet apparatus 520 and the suction apparatus 540 are positioned on the horizontal line of the concrete pavement, the slider 531 is moved along the rail 533 while the driving body 501 is stopped. It can be made while moving in the horizontal direction.
In addition, the pavement vehicle 500 has a shape bent upward (outer) or upward (inside) on the continuous surface of the bracket 521 to reinforce the strength of the bracket 521, the horizontal or vertical And a bending part 521a continuously formed in the direction.

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In addition, the concrete composition may further comprise a polymer of 5 to 35% by weight of the cement.

In addition, the polymer, SB (60-70% styrene, 30-40% butadiene) latex, polyacrylic ester (PAE, emulsion), ethylene vinyl acetate (EVA, ethylene-Vinyl Acetate) emulsion, epoxy resin, Acrylic resin, polyester, water-soluble methyl methacryl resin (MMA, MethylMethAcrylate resin) can be configured to include any one.

According to the present invention having the above-described configuration, by using a pavement treatment vehicle equipped with a water jet device for injecting high pressure water and a suction device for sucking sludge, while removing the concrete deterioration unit from the pavement through the high pressure water and suction removal can do.

Accordingly, the simple operation of running and operating the pavement repairing device without the need to sequentially and independently crush and cut the concrete deterioration part and remove the crushed sludge from the cut surface by using a high pressure water spray device. By one process corresponding to the deterioration step removal step can completely remove the concrete deterioration unit.

In addition, the concrete deterioration part that is broken and dropped from the road surface by the waterjet device at the rear of the running body is quickly removed and cleaned on the road surface by the suction device installed adjacent to the waterjet device, resulting in scattering of debris or contaminated sludge. Innovative reductions in the risks and contamination of surrounding spaces and workers can be achieved.

Therefore, the degree of contamination of the worker or the surrounding space is not clearly defined in the process of spraying the high pressure water, and after the use of the high pressure water is completely terminated, it is possible to solve the temporal and spatial difficulties that could be caused by debris and water removal. Therefore, the time required for repair work can be shortened more, construction cost can be significantly reduced, and the work environment can be improved.

In addition, the high-strength concrete composition according to an embodiment of the present invention, by replacing the majority of the fine aggregates with the oxidized slag having a uniform density than natural aggregates, and greatly reduce the expensive cement content, it is possible to improve the overall strength of the concrete, In addition to expanding the usability of industrial waste, preventing concrete deterioration due to depletion of natural aggregates, it is possible to obtain economic effects of cost reduction.

In addition, the high-strength concrete composition according to an embodiment of the present invention, by reducing the cement content, significantly lowers the heat of hydration generated during the concrete hydration reaction to suppress the expansion and contraction of the initial concrete, the largest cause of cracking in concrete It can drastically reduce the amount of dry shrinkage acting as a function, maximize the watertightness of concrete, increase the waterproofness, and greatly increase the fluidity, which can greatly reduce the quantity used in concrete production.

1-a flowchart showing a concrete pavement repair method according to an embodiment of the present invention
Figure 2-main part side view showing a pavement treatment vehicle according to an embodiment of the present invention
Fig. 3-Yobusa perspective view of Fig. 2
4 is a conceptual diagram showing a concrete pavement state in the process of applying the concrete pavement repair method according to an embodiment of the present invention
5-Graph of measuring and comparing the concrete internal temperature according to the composition of the present invention and the existing concrete

1 is a flow chart illustrating a concrete pavement repair method according to an embodiment of the present invention, Figures 2 and 3 is a main portion side view, a main portion perspective view showing a pavement treatment vehicle 500 according to an embodiment of the present invention, respectively. .

Concrete pavement repair method according to an embodiment of the present invention, relates to a concrete pavement method, referring to Figure 1, the deterioration part removing step (S1), concrete pouring step (S2), finishing step (S3) Through a simple process, complete removal of the concrete pavement deterioration part and concrete pouring can be completed and finished.

In the deterioration unit removing step (S1), as shown in FIGS. 2 and 3, the pavement treatment vehicle 500 including the waterjet device 520 for injecting high pressure water and the suction device 540 for injecting sludge is provided. While running and moving, the deteriorated part of the concrete pavement is removed from the road surface through high pressure water and suction is removed.

In the deteriorating part removing step (S1), the concrete deterioration part having a lower strength than the injection energy provided by the waterjet device 520 is crushed, and the sludge including the crushed concrete deterioration part and water is discharged. At the rear portion or the circumference of the 520, suction and removal are performed by a pressure difference formed by the suction device 540.

The pavement processing vehicle 500 according to an embodiment of the present invention has a configuration that includes a driving body 501, the waterjet device 520, the suction device 540, and the sliding device 530.

The driving body 501 is provided with a reference surface that can be mounted and mounted on the rear of the waterjet device 520, the suction device 540, the sliding device 530, a frame capable of supporting the load, and automatically by a wheel member, Or it moves and moves along the work progress path manually.

By installing the waterjet device 520, the suction device 540, and the sliding device 530 at the rear of the driving body 501, the structure and size of the waterjet device 520 and the suction device 540 can be designed and manufactured. In doing so, the constraints caused by interference with other components and equipment can be minimized.

In addition, even in the process of removing the deterioration unit (S1), the position can be easily moved as needed without fear of interference with other equipment, the operator is behind the running body 510 the waterjet device The working state and the result by the 520 and the suction device 540 can be immediately confirmed, and the efficiency of the work can be achieved.

The waterjet apparatus 520 is installed at the rear bottom of the driving body 501 to spray the high pressure water downward at a position adjacent to the concrete road surface CR, and the pavement handling vehicle 500 according to an embodiment of the present invention. In the waterjet apparatus 520, the rotating shaft 523, the swivel (swivel) 524, and has a configuration including a plurality of high-pressure nozzle (525).

The rotating shaft 523 is installed on the bracket 521 (described below) in a vertical direction with respect to the concrete road surface CR, and the swivel 524 is formed at the bottom of the bracket 521 at the rotating shaft 523. Rotatably coupled to the high pressure nozzle 525 is radially coupled around the swivel 524.

In order to operate the waterjet device 520, a water tank 561 and a high pressure pump for supplying water to the waterjet device 520 to supply high pressure pressure to the waterjet device 520 are provided. The rotating shaft 523 is connected to the high pressure hose 524a for providing the high pressure water to supply the high pressure water to the high pressure nozzle 525.

The plurality of high pressure nozzles 525 draw a circular trajectory having a radius corresponding to a distance from the center of the swivel 524 by the rotation of the rotary shaft 523 to the swivel 524, each of which is the circular trajectory. Through the width corresponding to the diameter of the, the high-pressure water is sprayed toward the concrete road surface (CR) to chip the concrete road surface (CR).

When the three high pressure nozzles 525 are radially connected to the swivel 524, one of the high pressure nozzles 525 moves by 120 ° while drawing a circular trajectory from the reference position (0 °). Clockwise), the other high pressure nozzle 525 moves from -120 ° to 0 ° and another high pressure nozzle 525 located at 120 ° moves to 240 ° (-120 °). In this case, high pressure injection is performed uniformly over the whole area within the designated width corresponding to the diameter of the circular trajectory.

When water is made into jets of ultra high pressure and ultra high speed as described above and sprayed on the structure to be dismantled, it can selectively destroy only the deteriorated concrete by causing the scour action to the concrete, and if the scour action into the solid continues further, When the pressure of the water is applied to the wall inside the scoured solid, the impact fracture in which the solid is peeled off starts, causing an explosive destructive action.

Accordingly, concrete having a lower strength than the spraying energy provided by the waterjet apparatus 520 is crushed, and a healthy portion having a high strength remains, and effectively removes deteriorated concrete, but does not affect the healthy portion at all. Rather, it is possible to increase the adhesion between the existing concrete and the newly poured concrete by the uneven formation.

That is, by spraying water of a certain pressure to the existing structure to dig through the pores of the material to remove the fragile parts, the remaining structure maintains more than the required strength, and in addition to the evaluated deterioration part to the concrete strength reduction site damaged by other deterioration action It can maximize the repair effect by exposing the healthy part of the initial construction state while removing it completely.

The suction device 540 is a suction port (not shown) to quickly suck and remove the concrete crushed material, water, etc., crushed, separated from the pavement by the waterjet unit 120 by the pressure difference with the atmospheric pressure. The waterjet apparatus 520 may be positioned adjacent to one side of the waterjet apparatus 520 or positioned around the waterjet apparatus 520.

In one embodiment of the pavement processing vehicle 500, the suction port is formed around the waterjet device 520 by installing the bracket 521 spaced apart from the outside of the waterjet device 520 in a downwardly open shape. Accordingly, the cleaning and drying can be reliably performed without remaining sludge remaining throughout the maintenance area affected by the waterjet device 520 regardless of the moving direction of the waterjet device 520. .

As the deterioration part is removed (S1), in addition to the concrete deterioration part, as the concrete is hardened to remove the latent (laitance), which is a fine substance that rises and sinks on the surface of the concrete or mortar due to the increase in moisture, It is possible to prevent micro cracks caused by oil and to secure concrete adhesion.

The bracket 521 may prevent the concrete fragments cut by the waterjet apparatus 520 from protruding to the outside and become a hazard to the worker or contaminate the surroundings, while being coupled to the sliding device 530. It has a strength capable of supporting the load of the waterjet device 520 and other components of the suction device 540.

If the bending portion 521a bent upwards (outside) or upwards (inside) on the continuous surface of the bracket 521 is formed continuously in the horizontal or vertical direction, the bending portion 521a may be bent or curved. In comparison with the structure which consists only of a flat surface, strength can be reinforced.

The bracket 521 provides the concrete crushed material shatterproof wall for the waterjet device 520 and the waterjet device 520 and the suction device 541 while providing the suction port for the suction device 541. It is to provide a skeleton to be connected to the sliding device (530).

The suction device 540 may include a bracket 521, a differential pressure forming means (not shown) such as a suction hose 541, a collection box 564, a blower, and a vacuum pump.

The suction hose 541 has a bellows structure that can be stretched and bent to form a conveying path of the concrete crushed material sucked through the suction port, and the concrete crushed material transported through the suction hose 541 is collected 564. ), The differential pressure forming means forms a differential pressure for sucking and transporting the concrete crushed material from the suction port to the collection box 564.

The pavement processing vehicle 500 according to an exemplary embodiment of the present invention sucks concrete debris inside the bracket 521 by a structure in which the suction end of the suction hose 540 is coupled to the bracket 521. However, if the connection between the suction hose 540 and the bracket 521 is formed to be detachably assembled, the suction hose 540 may be separated from the water jet apparatus 520 as necessary.

Accordingly, in the process of performing the deterioration part removing step (S1), when only the suction device 540 is required for the treatment of the contaminated part around the packaging repair part currently being operated, the bracket 521 is removed from the bracket 521. The water jet apparatus 520 may be separated and used independently of the water jet apparatus 520, and the water jet apparatus 520 may also be used independently of the suction apparatus 540.

The sliding device 530 is coupled to the rail 533 and the bracket 521 which are installed in the transverse direction (left and right directions when the traveling body 501 is moved forward) at the rear of the traveling body 501. And a slider 531 which is slidably moved in the horizontal direction along the rail 533.

The rail 533 is mounted on a base 532 coupled to provide a frame having a shape extending in the lateral direction to the rear of the driving body 501, the length of the base 532 to the rail 533. Is the movable width of the waterjet apparatus 520 and the suction apparatus 540, that is, the repairable width while the driving body 501 is stopped or traveling straight.

In one embodiment of the present invention, the bracket 521 is connected to the slider 531 by the elevating device 581, the elevating device 581 is installed to extend the length of the cylinder member in the vertical direction. Can be configured.

While moving to the next working position, the water jet device 520 and the suction device 540 are moved upward by using the elevating device 581 to secure driving, and when the next working position is reached, the concrete pavement repair work is performed again. (The deterioration unit removing step (S1)) may be performed.

In driving the driving body 501 forward and backward and moving the slider 531 left and right, the operator may drive or move the driving body manually, but the driving body 501 and the slider 531 may be used. It is also possible to perform the deterioration removing step (S1) by having a controller for controlling the movement of the), automatically driving and moving at a predetermined speed and direction according to the set programming content.

In using the pavement treatment vehicle 500, a narrow road surface having a width corresponding to the horizontal length of the base 532 to the rail 533 of the sliding device, or the trajectory of the high pressure nozzle 525 among the concrete road surfaces. It is suitable for repairing a part of the road surface where local damage has occurred to the corresponding width, and in particular, for repairing the joint portion of the road surface.

By placing the waterjet device 520 and the suction device 540 on the vertical joint of the concrete pavement and driving the traveling body 501 forward or rearward, the concrete deterioration unit continuously along the vertical joint of the concrete pavement Crushing and removal can be performed efficiently.

In addition, the water jet device 520 and the suction device 540 is positioned on the horizontal row of concrete pavement and the driving body 501 is stopped, and the slider 531 is left along the rail 533. By moving to the right side (horizontal direction), the concrete deterioration part can be efficiently broken and removed along the horizontal joint of the concrete pavement.

4 is a conceptual diagram illustrating a concrete pavement state in the process of applying the concrete pavement repair method according to an embodiment of the present invention.

Area A of FIG. 4 illustrates a concrete pavement state in which the upper portion of the concrete is deteriorated before repairing, and while the deterioration part is removed (S1), the concrete deterioration part is sprayed by high pressure water of the waterjet apparatus 520. It is crushed and separated as shown in region B, and is removed from the concrete road surface as shown in region C of FIG. 4 through the suction port of the suction device 540 formed around the waterjet apparatus 520.

In the concrete pouring step (S2), as shown in the region D of FIG. 4, in the deterioration part removal step (S1), the concrete is poured in the portion in which the sludge is removed, in the finishing step (S3) Finishing the surface of the concrete poured in the concrete pouring step (S2) to be flat with the paving surface.

The concrete composition to be poured in the concrete pouring step (S2), including 8 to 16% by weight of cement, 3 to 6% by weight of water, 28 to 59% by weight of fine aggregate, 30 to 50% by weight of coarse aggregate, 30 of the fine aggregate 100% may have a slag composition, and may further include 5 to 35% of the polymer by weight of the cement.

[Table 1] below shows the mixing example of the existing fast-hard polymer concrete (comparative example) and the concrete composition (Examples 1 to 4) according to the present invention, [Table 2] is in the comparative example and the present name It shows the effect of the mixing case of Examples 1 to 4 of the concrete composition according to. Embodiments of the present invention, in order to implement the strength of the concrete, the particle size of the slag was applied to 1.2 ~ 5.0mm.

Specification



W / B


S / a
Unit weight (kg / ㎥)

cement
water
Latex
Fine aggregate
Coarse aggregate

Comparative example

38%
55%
360
76
115
914
760
Example 1

34%
47%
300
41
96
1,158
972
Example 2

34%
47%
300
58
64
1,182
992
Example 3

36%
47%
260
39
83
1,219
1,023
Example 4

38%
47%
260
59
55
1,240
1,041

division



Slump (mm)


Air volume (%)
Compressive strength (kgf / ㎠)
Flexural strength (kgf / ㎠)

4 hours
1 day
4 hours
1 day

Comparative example

210
5.5
281
378
48
55
Example 1

230
4
348.1
460.0
77.9
81.4
Example 2

200
4
420.7
499.2
82.2
87.2
Example 3

180
3.6
337.0
430.0
83.0
86.1
Example 4

180
3.9
369.7
448.3
73.2
78.6

Looking at [Table 1], [Table 2], it can be seen that the concrete composition according to the embodiments of the present invention shows a much higher compressive strength even with less cement than conventional fast-hard polymer concrete (comparative) Can be.

On the other hand, [Table 3] and Figure 5 shows the concrete temperature change with time of the concrete composition of the Comparative Example and Examples 2, 4, the concrete composition according to the embodiment of the present invention is a conventional fast-rigid polymer concrete By using less cement than (Comparative Example), it can be seen that the internal temperature rise due to the heat of hydration is much smaller.

division

Comparative example
Example 2
Example 4
Temperature

32.7 ℃
30.3 ℃
0.4 ℃

Table 4 below shows the concrete dry shrinkage strain of the concrete composition of Comparative Examples and Examples 2 and 4, due to the reduction of the cement content of the concrete composition according to the embodiment of the present invention the fast-rigid polymer concrete ( It can be seen that the concrete drying shrinkage is significantly reduced than the comparative example. This reduction in drying shrinkage is a major issue that can prevent the early cracking of concrete.

division

Comparative example
Example 2
Example 4
Dry Strain Strain (%)

0.094
0.02
0.015

On the other hand, the waterproofness of concrete is evaluated by chlorine ion permeation test, and the electrode container is fixed on both sides of the concrete during the test, and the circuit is formed by using electrodes from these containers as terminals, and then passed through the electrolyte solution according to the measured voltage. As a method of evaluating the degree of permeability of concrete, the measured voltage is converted into a current value, and the total amount of electric charge passed is expressed as Coulomb.

[Table 5] below is a table evaluating the permeability characteristics according to the amount of passing charge measured through the chlorine ion permeation test as described above, [Table 6] is a measurement of the waterproofness of the concrete composition of Comparative Examples and Examples 2, 4 As shown, due to the decrease in the cement content and the increase in the slag content, when applying the concrete composition according to an embodiment of the present invention, it can be seen that the water resistance is much higher than the existing fast-hard polymer concrete.

coulomb

Permeability grade
More than 4000

High permeability
2000-4000

usually
1000-2000

lowness
100-1000

Very low
100 or less

Impervious

division

Comparative example
Example 2
Example 4
Waterproof measurement (Coulomb)

1,106
116
352

As described above, the high-strength concrete composition of the present invention, unlike the existing concrete composition, which has a low replacement ratio of slag, replaces most of the aggregates with oxidized slag having a uniform density, thereby increasing the density and filling properties of the concrete. By improving the strength and thus significantly reducing the expensive cement content, the cost saving effect can be obtained.

In addition, the high-strength concrete composition of the present invention can significantly reduce the heat of hydration by reducing the cement content, inhibit the expansion and contraction of the initial concrete, significantly reduce the amount of dry shrinkage, maximize the water tightness of the concrete to increase the waterproofness, fluidity In order to increase the amount of concrete used in the manufacture of concrete can be greatly reduced.

The existing concrete composition using oxidized slag has a very low replacement ratio of natural aggregates of slag, about 11 to 30%, and has a limitation in lowering the manufacturing cost because it has to maintain high cement content in order to maintain the strength of concrete. According to the embodiment of the present invention, by increasing the content of the oxidized slag in concrete significantly, it is possible to reduce the cost of cement by reducing expensive cement.

In addition, by using an oxide slag having a uniform density than natural aggregates, watertightness and filling properties are increased even with a small amount of cement, so that high-strength concrete having a strength of 400 kgf / cm 2 or more can be produced for 4 hours. In the hydration reaction, the heat of hydration generated inside can be greatly reduced to suppress the expansion and contraction of the initial concrete, and the amount of dry shrinkage, which is the biggest cause of cracking in concrete, can also be significantly reduced.

In addition, general concrete is not a complete waterproof body, but when using slag can maximize the water-tightness of the concrete, the water resistance is dramatically increased, the fluidity is greatly increased in the solid state due to the effect of spherical slag particles, used in the manufacture of general concrete The quantity to be reduced can be greatly reduced, and the reduction of the quantity can exhibit the effects of high strength, high performance, and shrinkage prevention.

The polymer is to improve the adhesion and water resistance between the concrete being poured in the concrete placing step (S2) and the existing concrete, consequently contributing to the durability of the concrete, the embodiments of the present invention applied SB latex SB (60 to 70% by weight, butadiene 30 to 40% by weight) latex, polyacrylic ester (PAE, Emulsion), ethylene vinyl acetate (EVA, ethylene-vinyl acetate) emulsion, epoxy It is preferable to include any one of a resin, an acrylic resin, polyester, and a water-soluble methyl methacrylate resin (MMA, MethylMethAcrylate resin).

The finishing step (S3) according to the known technology will be omitted because the detailed description, the coating curing agent is applied to the surface of the cast concrete to form and curing the film curing (membrane curing) step, the moisture in the poured concrete It may further include a moist curing to maintain the wet state for a predetermined period of time so as to supply water or to prevent the moisture dissipation of the concrete.

After concrete, condensation begins first by cement hydration reaction, and then hardening proceeds to express strength. Therefore, the necessary conditions as concrete must be prepared in the early stage. It is desirable to undergo further curing steps to protect concrete from harmful external influences.

In addition, in order to generate frictional force against the tire of the vehicle to prevent the vehicle from slipping, a predetermined distance (for example, 3 to 5 cm) and a predetermined depth (for example, 4 to 5 cm) are placed on the concrete surface that is poured by using a tinning machine. 6 mm) may further include a tining step of forming a non-slip joint (tinning groove).

According to an embodiment of the present invention having the configuration described above, when repair is required due to damage of the concrete pavement, the pavement treatment vehicle in a state in which partial traffic is blocked at a time when traffic is low, without bypass or long-term traffic blocking. 500) can be used to quickly open traffic by cutting and cleaning the deterioration part and laying concrete.

In other words, by developing and introducing new equipment for the repair of concrete roads and optimizing the concrete composition in consideration of economic efficiency, constructability and economic efficiency can be secured, and the adhesion and bonding strength of the existing concrete and newly poured concrete are integrated. It can be implemented, and can also ensure quality control and quality safety according to the implementation of excellent long-term strength and durability.

The present invention has been described with reference to preferred embodiments of the present invention, but the present invention is not limited to these embodiments, and the claims and detailed description of the present invention together with the embodiments in which the above embodiments are simply combined with existing known technologies. In the present invention, it can be seen that the technology that can be modified and used by those skilled in the art are naturally included in the technical scope of the present invention.

500: packaged vehicle 501: driving body
520: water jet device 521: bracket
523: axis of rotation 524: swivel
524a: High pressure hose 525: High pressure nozzle
530: sliding device 531: slider
532: base 533: rail
540: suction device 541: suction hose
561: water tank 564: collection container
CR: Concrete Road Surface

Claims (12)

In the concrete paving method,
The waterjet device 520 installed at the rear of the driving body 501 and the driving body 501 to inject high-pressure water toward the concrete road surface CR to chip the concrete road surface CR, and the waterjet device 520. Bracket 521 which is spaced apart from the outside of the waterjet apparatus 520 in a downwardly open shape to form a suction port for suctioning the sludge including the concrete crushed by the circumference of the waterjet apparatus 520, stretch and bend A pavement handling vehicle having a suction device 540 having a bellows structure capable of forming a conveying path of the concrete crushed material sucked through the suction port and having a suction hose 541 detachably assembled with a connection with the bracket 521. By using the 500, the concrete deterioration unit and the concrete crushing at the same time to form the unevenness to increase the adhesion between the existing concrete and the newly poured concrete When the suction unit removes water, and only the suction unit 540 needs to be operated for treatment of contaminants around the packaging repair unit currently in operation, the water suction hose 540 is detached from the bracket 521 so that the water jet is removed. Deterioration removing step S1 for use independently of the apparatus 520;
Placing concrete containing 8 to 16% by weight of cement, 3 to 6% by weight of water, 28 to 59% by weight of coarse aggregate, and 30 to 50% by weight of coarse aggregate, on the part where sludge was removed in the deterioration part removing step (S1). Concrete pouring step (S2); And
A finishing step (S3) of finishing the surface of the concrete poured in the concrete pouring step (S2) to be flat with the existing concrete pavement surface;
Concrete pavement repair method consisting of.
delete delete delete The method of claim 1, wherein the packaging vehicle 500,
A rail 533 which is installed in the transverse direction at the rear of the driving body 501, the water jet device 520 and the suction device 540 are coupled and a slider 531 sliding along the rail 533 is provided. Sliding device 530;
It is configured to include more
The deterioration unit removing step (S1),
While driving the pavement processing vehicle 500 along the vertical ply of the concrete pavement, when the waterjet device 520 and the suction device 540 is located on the horizontal ply of the concrete pavement, the traveling body 501 is stopped. Concrete pavement repair method made in the state, while moving the slider 531 in the transverse direction along the rail (533).
delete The method of claim 1,
The packaging processing vehicle 500,
A bending part 521a which is bent upwardly (outwardly) or upwardly (inwardly) on a continuous surface of the bracket 521 to reinforce the strength of the bracket 521 and is continuously formed in a horizontal or vertical direction;
Concrete pavement repair method comprising more.
delete delete The method of claim 1,
Concrete pavement repair method, characterized in that consisting of 30 to 100% of the fine aggregate.
The method of claim 10, wherein the concrete composition,
Concrete pavement repair method characterized in that it further comprises a polymer of 5 to 35% by weight of the cement.
The method of claim 11, wherein the polymer,
SB (60 ~ 70 wt%, Butadiene 30 ~ 40wt%) Latex, Polyacrylic Ester (PAE) Emulsion, Ethylene Vinyl Acetate (EVA) Emulsion, Epoxy Resin, Acrylic Resin, Poly Ester, water-soluble methyl methacryl resin (MMA, MethylMethAcrylate resin) comprising a concrete pavement repair method comprising a.

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