KR20170110861A - Precast block for repairing road and repairing construction method using the same - Google Patents

Abstract

The present invention relates to a precast block for road maintenance and a repairing method using the precast block for road maintenance. The precast block for road repair has a predetermined shape of an ascon or concrete material, and has at least one grouting movable hole ; And a plurality of grouting outlet holes communicating with the grouting inlet grooves are formed on a surface of the grouting inlet groove, wherein an open side of the grouting inlet groove is formed in the grouting hole A discharge pillar connected to the bottom surface of the body so as to communicate with the bottom surface of the body; A first height adjusting tab inserted into one side of the body so as to vertically move a supporting foot connected to a lower portion along a longitudinal direction of the body through a screw rotation; And a second height adjusting tab having the same structure as the first height adjusting tab and inserted into the other side of the inside of the body opposite to the mounting position of the first height adjusting tack And suggests a way to perform fast and efficient repair work.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast block for road maintenance,

The present invention relates to a precast block for road maintenance and a repair and construction method using the precast block.

Most roads prepared by asphalt road pavement are vulnerable to moisture, so if the load continues to be generated by automobiles passing the road in the situation where water is continuously supplied through rainfall or heavy snowfall, So that a pot hole is formed.

Such a port hole is not only a breakage phenomenon of a package but also causes a step on a road surface to cause a traffic accident caused by a puncture of a tire or a deviation of a traveling track of a vehicle.

Therefore, in recent years, various construction equipments and construction methods have been proposed in order to solve defects such as port holes in the surface layer and to repair the packing property of the road.

Prior art documents related to the prior art for restoring road pavement by repairing the portholes formed in the surface layer are disclosed in Korean Patent Application No. 10-2011-0096520 entitled " Ascone pavement repair method and structure thereof " Quot; prior art ").

However, the cause of the failure on the road such as the port hole is not caused only by the moisture, but the micro crack generated by the insufficient and poor work of the surface compaction process during the pavement construction process is gradually becoming larger and larger, The failure factors are manifested due to the provision of the water pressure or the water pressure that rises through the gap of the soft ground due to the capillary shape of the ground water flowing on the auxiliary layer located below the surface layer and the base layer.

Therefore, the conventional techniques for repairing construction equipment and methods including the conventional technology are not suitable for repairing and repairing damage due to defects in the base layer and the auxiliary layer, , The human, physical, and economic factors required for construction were inefficiently generated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to effectively repair and recover defective factors such as port holes generated over the surface layer, the base layer and the auxiliary layer constituting the road, And a precast block used for the road maintenance construction method.

According to an aspect of the present invention, there is provided a precast block for road repair according to the present invention. The precast block for road repair according to the present invention comprises: a body having a predetermined shape of an ascon or a concrete material and having at least one grouting movable hole along a longitudinal direction from an upper surface to a lower surface; And a plurality of grouting outlet holes communicating with the grouting inlet grooves are formed on a surface of the grouting inlet groove, wherein an open side of the grouting inlet groove is formed in the grouting hole A discharge pillar connected to the bottom surface of the body so as to communicate with the bottom surface of the body; A first height adjusting tab inserted into one side of the body so as to vertically move a supporting foot connected to a lower portion along a longitudinal direction of the body through a screw rotation; And a second height adjusting tab having the same structure as the first height adjusting tab and inserted into the other side of the inside of the body opposite to the mounting position of the first height adjusting tack.

The body is provided with an annular structure having a predetermined diameter along the longitudinal direction from the upper surface to the lower surface at an intermediate portion and having an opened inner open space, and the at least one grouting agent moving hole At least one grouting branch hole branched from the at least one grouting movement hole is formed so as to communicate with the inner open space.

A plurality of position fixing pins may be provided on the lower surface of the body so as to protrude downward.

According to another aspect of the present invention, there is provided a repair and construction method using a precast block for road repair according to the present invention, Step A; Performing a compaction of the inside of the installation groove to smooth a seating surface for installing the precast block; A step D of installing a precast block including a body provided with at least one grouting element moving hole in the installation groove in which compaction is performed; And a step E of injecting the grouting agent into the grouting moving hole of the precast block supported by the installation groove at a high pressure, wherein the precast block installed through the step D is made of an ascon or a concrete material A body having at least one grouting movement hole along the longitudinal direction from the upper surface to the lower surface; And a plurality of grouting outlet holes communicating with the grouting inlet grooves are formed on a surface of the grouting inlet groove, the open end of the grouting inlet groove being formed in the grouting inlet groove, The grouting material injected into the grouting movement hole of the precast block through the step E is guided by a plurality of grouting grooves formed in the discharge pillar of the precast block, High-pressure injection and curing through the discharge hole to fill the clearance between the installation groove and the precast block and to reinforce and support the precast block seated in the installation groove.

Here, step A is a step of providing an installation groove in which a sub-base layer formed in a lower part of a base layer is exposed through cutting over a surface layer and a base layer of a road ground around a construction site, The column is inserted and fixed in the auxiliary layer, and the grouting agent injected from the plurality of grout discharging holes on the surface of the discharge column of the precast block through the step E is filled up to the surface layer from the auxiliary layer.

In the step A, step A-1 is performed to cut the periphery of the side of the block to be removed from the layer extending over the surface layer and the base layer by performing cutting perpendicular to the surface to the base layer region of the road surface around the construction site. And step A-2 of separating the block from the auxiliary layer by lifting the block separated from the surface layer and the ground layer from the side of the side surface through step A-1.

The grouting agent injected and injected at the high pressure through the step E is prepared by mixing an additive prepared by combining at least one of a main and cement mortar, a waterproofing agent, and a water glass provided as an asphalt.

The precast block installed through the step (D) includes a first height adjusting tab inserted into one side of the body so as to vertically move the support leg connected to the lower portion along the longitudinal direction of the body through screw rotation. And a second height adjusting tab having the same structure as the first height adjusting tab and inserted into the other side of the inside of the body opposite to the mounting position of the first height adjusting tack, A step D-1 for supporting the pre-cast block by supporting the first height-adjusting tab and the second height-adjusting tab on the seating surface; And at least one of the first height-adjusting tab and the second height-adjusting tab is screw-rotated so that the inclination of the pre-cast block seated in the installation groove through the step (D-1) Step-2.

After the step D and before the step E, an elastic caulking member is inserted into the gap between the installation groove and the precast block to form a watertight space, and a predetermined pressure And an E 'step of applying Eq.

According to another aspect of the present invention, there is provided a repair and maintenance method using a precast block for road repair according to another embodiment of the present invention, A step A for providing an installation groove; A step B for installing a specific construction structure in the center of the installation groove; Performing a compaction of the inside of the installation groove to smooth a seating surface for installing the precast block; A step D of installing a precast block including a body provided with at least one grouting element moving hole in the installation groove in which compaction is performed; And a step E of injecting the grouting agent into the grouting movement hole of the precast block supported and mounted on the installation groove, wherein the precast block installed through step D is made of ascon or concrete material And at least one grouting movement hole extending in the longitudinal direction from the upper surface to the lower surface and having at least one grouting movement hole extending in the longitudinal direction from the upper surface to the lower surface, A body having at least one grouting branch hole branched from the grouting movement hole to communicate the grouting movement hole and the inner open space; And a plurality of grouting outlet holes communicating with the grouting inlet grooves are formed on a surface of the grouting inlet groove, the open end of the grouting inlet groove being formed in the grouting inlet groove, The grouting material injected into the grouting movement hole of the precast block through the step E is guided by a plurality of grouting grooves formed in the discharge pillar of the precast block, High pressure injection and hardening through the discharge hole and the at least one grouting branch hole to fill the clearance between the installation groove and the precast block and between the inner open space and the installation structure, And the constructing structure is reinforced and supported.

Here, step A is a step of providing an installation groove in which a sub-base layer formed in a lower part of a base layer is exposed through cutting over a surface layer and a base layer of a road ground around a construction site, The column is inserted and fixed in the auxiliary layer, and the grouting agent injected from the plurality of grout discharging holes on the surface of the discharge column of the precast block through the step E is filled up to the surface layer from the auxiliary layer.

In the step A, step A-1 is performed to cut the periphery of the side of the block to be removed from the layer extending over the surface layer and the base layer by performing cutting perpendicular to the surface to the base layer region of the road surface around the construction site. And step A-2 of separating the block from the auxiliary layer by lifting the block separated from the surface layer and the ground layer from the side of the side surface through step A-1.

The grouting agent injected and injected at the high pressure through the step E is prepared by mixing an additive prepared by combining at least one of a main and cement mortar, a waterproofing agent, and a water glass provided as an asphalt.

The precast block installed through the step (D) includes a first height adjusting tab inserted into one side of the body so as to vertically move the support leg connected to the lower portion along the longitudinal direction of the body through screw rotation. And a second height adjusting tab having the same structure as the first height adjusting tab and inserted into the other side of the inside of the body opposite to the mounting position of the first height adjusting tack, A step D-1 for supporting the pre-cast block by supporting the first height-adjusting tab and the second height-adjusting tab on the seating surface; And at least one of the first height-adjusting tab and the second height-adjusting tab is screw-rotated so that the inclination of the pre-cast block seated in the installation groove through the step (D-1) Step-2.

The step (D) may further include: a D'-1 step of installing a precast block having an inner open space corresponding to a construction structure located at the center of the installation groove on a seating surface; And a D'-2 step of interconnecting the inner side surface forming the inner open space of the pre-cast block installed in the installation groove and the outer side surface of the construction structure facing the inner side by using fixing bolts.

After the step D and before the step E, an elastic caulking member is inserted into the clearance between the installation groove and the precast block and the gap between the inner open space and the constructing structure to form a watertight space And applying a predetermined pressure to the elastic caulking member in a downward direction.

According to the present invention, the following effects can be obtained.

Firstly, it can effectively eliminate bad factors that cause road joining affecting surface layer and auxiliary layer including surface layer of pavement, and restore roadway packing.

Second, it is possible to fill the gap between the precast block and the installation groove through the grouting technique after the cutting around the construction site, and effectively fix the defects between the precast block and the installation groove through the hardening, and furthermore, And the supporting force can be effectively reinforced.

Third, in the process of installing standardized precast blocks to correspond to each installation groove standard, it is easy to correct the position through height adjustment tack, and stable and well balanced positioning and fixing is provided through the exhaust post and position fixing pin. Lt; / RTI >

Fourth, the precast block and the grouting agent injection are performed in a state where a specific construction structure such as a manhole structure is positioned inside, thereby restoring the packing property of the road maintenance and efficiently providing a stable installation of the construction structure have.

Fifth, after the vertical cutting operation at the periphery of the construction part, the water jet cutting is performed in the horizontal direction, the cutting process for forming a fast and precise installation groove can be performed.

Sixthly, the grouting agent moving and discharging through the grouting moving hole and the discharging hole of the precast block from the grouting device is performed by inserting the gap generated between the precast block and the ground and the constructing structure using the caulking member It is possible to minimize the compaction defects by providing a high level of pressure compared to the process of performing the placement and compaction of the final packaging material by using the conventional small compaction device and to prevent leakage of the grouting material moving upward from the bottom, The work for making uniform and flat can be facilitated.

1 is a perspective view showing a structure of a precast block according to a first embodiment of the present invention.
2 is a perspective view showing a structure of a precast block according to a second embodiment of the present invention.
3 is a perspective view showing a structure of a precast block according to a third embodiment of the present invention.
4 is a flowchart showing a maintenance method using a precast block according to the first embodiment of the present invention.
5 is a cross-sectional view briefly showing a maintenance type using a precast block according to a first embodiment of the present invention shown in FIG.
6 is a conceptual view for explaining a cutting process and an advancing mode for providing a mounting groove at the periphery of a construction site.
7 is a flowchart showing a maintenance and repair method using a precast block according to a third embodiment of the present invention.
FIG. 8 is a cross-sectional view briefly showing a maintenance type using a precast block according to a third embodiment of the present invention shown in FIG. 3. FIG.

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, in which the technical parts already known will be omitted or compressed for the sake of brevity.

1. Description of structure and components of precast block

(1) First Embodiment: A cylindrical pre-cast block 100,

1 and 5, a cylindrical pre-cast block 100 according to a first embodiment of the present invention includes a body 110; A discharge column 120; And includes a first height adjustment tab 130 and a second height adjustment tab 140.

The body 110 is a block structure made up of asphalt (asphalt concrete) or concrete alone and having a predetermined shape, and has a grouting movement hole 110H for providing a movement path of the grouting agent along the longitudinal direction from the upper surface to the lower surface At least one is provided.

In addition, a plurality of position fixing pins 115 protruding downward are provided on a lower surface of the body 110 to provide a certain level of fixing and supporting force from the ground surface when the precast block 100 is installed.

In the case of the cylindrical precast block 100 of the present embodiment, it is preferable that one grouting element moving hole 110H is formed at the center portion. Under the grouting element moving hole 110H, the lower surface of the cylindrical body 110 The discharge column 120 is connected.

The discharge pillar 120 is a cylindrical structure having a grouting inlet groove 120H opened at one side thereof and a plurality of grouting hole holes 120H 'communicated with the grouting inlet groove 120H on the surface thereof. And the upper end side (the side contacting the lower surface of the body 110) to communicate the grouting inlet hole 120H and the grouting element moving hole 110H, and the lower side (the side facing the ground) A needle portion 125 of the structure is provided to provide ease of insertion and fixation into the ground.

In other words, the discharge pillar 120 is inserted into a ground surface (specifically, an auxiliary layer F3) having a cylindrical needle structure having a needle portion 125 at a lower end thereof to stably fix the body 110 on the ground The grouting agent injected at a high pressure through the grouting agent transfer hole 110H of the body 110 connected to the injection pipe of the separate grouting injection device through the plurality of grouting agent discharge holes 120H 'formed on the surface, (120H), and then branched in a plurality of directions so as to be discharged in the form of a high-pressure spray.

The first height adjustment tab 130 and the second height adjustment tab 140 are formed on the body 110 so as to move the support feet 135 and 145 connected to the lower portion along the longitudinal direction of the body 110, The first height adjusting tab 130 is installed on the body 110 and the second height adjusting tab 140 is disposed at a first position on one side of the body 110, Is preferably provided at the other second position opposite to the first position.

This supports the body 110 in a balanced manner through the support legs 135 and 145 of the first height adjustment tab 130 and the second height adjustment tab 140. Even when the degree of inclination is adjusted, So that it can be done.

The first height adjustment tab 130 and the second height adjustment tab 140 that are intended to be installed are designed so that the seating surface on which the precast block 100 is installed is not evenly parallel to the ground surface and has a constant slope, If the slope is inclined to a certain angle, the road maintenance work can be performed correspondingly.

Accordingly, when the first height adjusting tab 130 is screwed, one side of the body 110 moves upward or downward, and when the second height adjusting tab 140 is screwed, the other side of the body 110 moves up or down .

(2) Second embodiment: A precast block 100 '

Referring to Fig. 2, a precast block 100 'for a mountain rim girder according to a second embodiment of the present invention will be described. The precast block 100' for a mountain rim girder has a body 110; A discharge column 120; And a position fixing pin (not shown).

The precast block 100 'for a mountain-side riser according to the second embodiment has a shape such that the shape of the body 110' is "■" on the basis of a cross-sectional shape, and a shape for providing a moving water channel Respectively.

The precast block 100 'for a mountain-rim girder includes the same structure as the discharge column 120 and the plurality of position fixing pins 115 of the precast block 100 according to the first embodiment But the shape of the body 110 'is modified according to the object to be used, so that the shape of the body 110 is not limited to the cylindrical shape.

According to the design, the pre-cast block 100 'for a mountain-rim end-point has a body height such as the first height-adjusting tab 130 and the second height-adjusting tab 140 of the precast block 100 according to the first embodiment And tilt adjusting means can be additionally provided.

(3) Third Embodiment: A precast block 100 " of an annular cylindrical structure,

3 and 8, a precast block 100 '' of an annular cylindrical structure according to a third embodiment of the present invention will be described with reference to FIGS. 3 and 8. The precast block 100 '' having an annular cylindrical structure is described. Includes a body 110; A discharge column 120; And includes a first height adjustment tab 130 and a second height adjustment tab 140.

The precast block 100 '' of an annular cylindrical structure according to the third embodiment is a precast block 100 '' that is used when a construction for constructing a manhole structure M or MT is installed in the installation groove H, As the block 100 ", the discharge pillar 120 of the precast block 100 according to the first embodiment described above; A first height adjusting tab 130, a second height adjusting tab 140; And the pin for fixing the position 115, and shows the difference in the position and the number of positions of the corresponding structures. Accordingly, the discharge pillar 120 according to the third embodiment; A first height adjusting tab 130, a second height adjusting tab 140; And the position fixing pin 115 will be omitted.

Specifically, as shown in FIG. 3, the body 110 constituting the precast block 100 '' having an annular cylindrical structure according to the third embodiment has a central portion having a predetermined length along the longitudinal direction from the upper surface to the lower surface And is provided with an annular structure having an inner open space 100T having an open diameter.

The grouting branch hole 110H 'branched from the at least one grouting element moving hole 110H is formed in the body 110 so as to communicate the at least one grouting element moving hole 110H and the inner open space 100T. ) Are formed.

Here, the inner open space 100T is located in the corresponding space, and is preferably provided in a shape corresponding to the shape of the construction for installation installed in the installation groove H.

In other words, the precast blocks as in the first to third embodiments as described above are standardized and can be quickly replaced with each other depending on the size, shape and purpose of the construction site peripheral portion (CT) Efficient maintenance work can be achieved.

2. Description of various embodiments of repairing method using precast block

(1) Repair and Construction Method Using Precast Block According to First Embodiment

A detailed description will be made of the process of the maintenance and construction method using the precast block 100 according to the first embodiment of the present invention with reference to the flowchart of FIG. 4 and the sectional schematic view of FIG. 5 to FIG.

(1) -1. Step of forming an installation groove <S100>

In this step, as shown in FIG. 6 (a), a precast block 100 is installed to install a peripheral portion (CT) of a construction site where a defective day such as a pot hole or a ground crack is generated, And the mounting groove H is provided in correspondence with the shape and the size of the mounting groove.

As shown in FIG. 6, in this step S100, the auxiliary layer formed on the lower part of the base layer F2 through the cutting to the surface layer F1 of the road surface and the base layer F2, A step of providing a mounting groove H in which the upper surface F3 of the surface layer F1 is exposed to the upper side and a step of providing the mounting groove H of the upper surface F1 and the base layer F2, Proceed to construction.

The first height adjustment tab 130 and the second height adjustment tab 140 of the precast block 100 according to the first embodiment that are mounted on the installation hole H are supported by the support feet 135 and 145 Supports the body 110 on the auxiliary layer F3 and the discharge pillar 120 is inserted and fixed in the auxiliary layer F3 through the needle portion 125. [

6 (b), the process of forming the installation groove H through the step S100 is connected to a core drill (not shown) or a water jet injection device (not shown) The spray nozzle WN for spraying the spray nozzle WN is arranged vertically on the ground up to the base layer area F2 of the ground part CT of the construction site and cut to perform the cutting so that the periphery of the side face of the block B, F1) and the base layer F2 (Step A-1).

Thereafter, the process of lifting the block B, which is separated from the layer of the surface layer F1 and the base layer F2, upward to separate the block B from the auxiliary layer F3 (Step A-2) This is due to the fact that the auxiliary layer F3 is composed of a soil component due to the characteristics of each layer and does not require much force to separate the block B composed of the surface layer F1 and the base layer F2 .

This makes it possible to cut off the cutting in parallel with respect to a separate paper surface, thereby omitting the step of separating the auxiliary layer F3 and the block B from each other.

The separation process of the block B in which the side surface is separated from the layer of the surface layer F1 and the layer of the base layer F2 can be carried out by various methods. More specifically, the process of separating the block B from one side of the block B, A hole or a groove having a diameter capable of inserting an expansion member is vertically inserted into the hole or groove and then the expansion member is inserted into the hole or groove and then expanded so as to increase the internal adhesion, Can be separated.

Further, a hole having a predetermined diameter at one side of the block (B), most preferably at the center thereof, is pierced perpendicularly to the paper surface, and a portion of the tip end is elastically gathered inward by pressurization like a chuck member After the lifting member having the leg portion is inserted into the hole and then moved to the auxiliary layer F3 and the pressing is released, the leg is spread at the tip to support the lower surface of the base layer F2, To separate the block (B).

(1) -2. Compensation work step <S200>

In this step, as shown in FIG. 5, a process of making the seating surface for installing the precast block 100 is performed by performing compaction of the inside of the installation groove H formed through the front line step S100 .

In addition, this step corresponds to a step of pre-treating the space of the installation groove H so that a desired precast block can be installed.

(1) -3. Precast block installation step < S300 >

In this step, as shown in FIG. 5, the precast block 100 according to the first embodiment having the structure as described above is installed in the installation groove H which has been compaction and cleaned through the preceding step S200 .

The precast block 100 according to the first embodiment, which is seated in the installation groove H where compaction and cleaning have been completed, is mounted on the seating surface (the upper surface of the auxiliary layer F3) or the road surface (the upper surface of the surface layer F1) The process of adjusting the height and tilt is detailed in consideration of the degree of tilting.

More specifically, in this step S300, the support feet 135 and 145 of the first height adjustment tab 130 and the second height adjustment tab 140 are contacted on the seating surface to support the entire precast block 100 And the inclination of the precast block B seated on the installation groove H is parallel to the degree of tilting of the surface of the installation site peripheral portion CT 130) and the second height adjusting tab 140 (Step D-2) to adjust the height and tilt by screwing at least one of the tabs.

In addition, in the process of installing the precast block 100 in the installation groove H through the step S300, the discharge column 120 is inserted and fixed in the auxiliary layer F3, And acts as a grouting discharge means which will be described below.

(1) -4. Grouting agent injection step < S400 >

In this step, as shown in FIG. 5, the grouting injection device is connected to the grouting movement hole 110H of the pre-cast block 100, which is installed in the installation groove H through the preceding step S300, A process of high pressure injection of the grouting agent is performed.

Here, the grouting agent injected by the high pressure injection and the high pressure injection through the grouting spraying apparatus is a subject of asphalt, and materials prepared by combination of at least one of cement mortar, waterproofing agent and water glass can be further mixed Do.

In addition, the combination form of the additive is prepared differently according to the purpose of the repair work. Specifically, the cause of the failure factor to repair the peripheral portion (CT) of the construction site is caused by the penetration pressure of the water It is preferable that the grouting agent is provided by a combination of asphalt and waterproofing agent, and it is preferable that the grouting agent is provided by a combination of asphalt and cement mortar when the cause of the failure factor is caused by poor compaction or damage to the soft ground.

In addition, in the case where rapid curing is required according to the conditions of the repair work, it is preferable to include a water glass component in the grouting agent.

The grouting material thus prepared is injected into the grouting material transfer hole 110H of the precast block 100 through the step S400 and the grouting inlet grooves 120H formed in the discharge column 120 and the plurality of grouting materials The precast block 100 placed in the installation groove H is filled with the gap G1 between the installation groove H and the outer circumferential surface of the precast block 100 by injecting and curing the high pressure through the discharge hole 120H ' Reinforced and supported.

The grouting agent injected from the plurality of grouting agent discharge holes 120H 'on the surface of the discharge pillar 120 of the precast block 100 is sprayed in order from the auxiliary layer F3 upward to the surface layer F1 And fill up the empty space of each floor.

In addition, before the main step (S400) of high pressure injection of the grouting agent, an elastic caulking member 150 is first inserted into the gap G1 between the installation groove H and the precast block 100 A watertight space having a predetermined hermeticity is formed and the pressing plate 155 attached to the upper surface of the elastic caulking member 150 is pressed downward as shown in FIG. (Step E ') to maintain a predetermined pressure at a point of time when the present step S400 is completed.

This solves the problem of compaction failure caused by insufficient pressure using a conventional small compactor and prevents the leakage and overflow of the grouting agent gradually moving upward through the grouting high pressure spraying to provide a uniform and effective filling of the grouting agent, Curing, and compaction of the resin.

After completing the grouting high-pressure injection process, it is possible to complete the entire maintenance method by additionally cleaning and arranging the vicinity of the construction site of the road and completing the compaction.

(2) Repair and construction method using the precast block according to the third embodiment

A detailed description will be given of the process of the repair and construction method using the precast block 100 '' according to the third embodiment of the present invention with reference to the flowchart of FIG. 7 and the conceptual view of FIG.

(2) -1. Step of forming the groove for installation <S100 '>

In this step, as shown in FIG. 6 (a), a precast block 100 is installed to install a peripheral portion (CT) of a construction site where a defective day such as a pot hole or a ground crack is generated, And the mounting groove H is provided in correspondence with the shape and the size of the mounting groove.

In this step S100 ', an installation groove forming step S100 in the repairing method using the precast block 100 according to the first embodiment described above, a specific cutting process progressing form for forming the installation groove, H) are the same as the description of the structure of FIG.

(2) -2. Installation step of construction structure <S200 '>

In this step, as shown in FIG. 8, a specific construction for installation such as the manhole structure M or MT is installed at the inner center of the installation groove H formed through the preceding step S100 '.

(2) -3. Compensation work step <S300 '>

In this step, as shown in FIG. 8, the inner side of the installation groove H provided with the specific construction structure such as the manhole structure M, MT is subjected to the compaction through the pre-casting step S200 ' A process of making the seating surface for installing the main body 100 smooth is performed.

In addition, this step corresponds to a step of pre-treating the surrounding space except for the space for installing the constructing structures (M, MT) of the installation groove H so as to clean and clean the pre-cast block.

(2) -4. Precast block installation step < S400 &gt;

In this step, as shown in FIG. 8, the pre-cast block 100 '' according to the third embodiment having the structure as described above in the installation groove H having been compaction and cleaned through the preceding step S300 ' ) Is installed.

In this step S100 ', a precast block installation step (S300) in the repair method using the precast block 100 according to the first embodiment described above, a height and tilt adjustment type of the precast block, And the description of the insertion mode, function, and position in the discharge column 120 is the same.

Here, the shape of the inner open space 100T of the precast block 100 '' according to the third embodiment is similar to that of the specific construction structure, that is, the shape of the manhole structure M and MT, It is preferable to provide a shape corresponding to each other so as to be insertable into the main body.

In other words. The manhole structures M and MT are provided below the disk-shaped manhole M through a manhole support MT having a tapered shape so as to extend downward to support the same, The shape of the inner open space 100T of the inner tube 100 '' is opened in a cylindrical shape as shown in FIG. 3, and has an open shape so as to expand in diameter to taper in a specific section.

In this step S400 ', the manhole structures M and MT are inserted into the inner open space 100T of the precast block 100' 'and the inner open space 100T of the precast block 100' ', A separate fixing means may be provided for mutual coupling and connection of the first and second electrodes.

Specifically, a step of installing a precast block 100 '' having an inner open space 100T corresponding to the construction structures M and MT located at the center of the installation groove H on the seating surface 8, the inner side surface forming the inner open space 100T of the precast block 100 '' installed in the installation groove H and the inner side surface forming the inner side open space 100T ' (Step D'-2) in which the outer surfaces of the drag structures M and MT are interconnected by using the fixing bolts 160.

In view of the fact that the tensile force of the concrete structure is reinforced and maximized by a metal structure such as a reinforcing bar, the constructing structures M and MT and the precast block 100 '' are subjected to a grouting agent to be injected, So that they can be more strongly interconnected.

(1) -5. Grouting agent injection step < S500 &gt;

In this step, as shown in FIG. 8, the grouting injection hole 110H of the pre-cast block 100 '', which is installed in the installation groove H through the preceding step S400 ' And the grouting agent is injected at a high pressure.

The grouting agent is injected into the grouting moving hole 110H and into the grouting moving hole 110H of the precast block 100 '' through this step S500 ', and at least one grouting branch hole 110H' The gap G1 between the installation groove H and the outer circumferential surface of the precast block 100 and the inner open space H1 through the grouting inlet grooves 120H and the plurality of grouting outlet holes 120H ' The pre-cast block 100 that is seated in the installation groove H is reinforced and supported by covering the gap G2 between the construction structures M and MT.

The grouting agent injected at a high pressure from the plurality of grouting agent discharge holes 120H 'on the surface of the discharge column 120 of the precast block 100' 'extends from the auxiliary layer F3 upward to the surface layer F1 It gradually rises and fills the empty space of each floor.

The gap G1 and the inner open space 100T between the installation groove H and the precast block 100 and the inner space 100T before the main step S500 'of performing the high pressure injection of the grouting agent, A water tight space having a predetermined hermetic property is formed by inserting an elastic caulking member 150 into a gap G2 between the elastic caulking member 150 and the upper surface of the elastic caulking member 150 The pressing plate 155 is pressed downward as shown in FIG. 5 to apply a predetermined pressure to the elastic caulking member 150 (step E ') and is maintained until the completion of the present step S500' .

This solves the problem of compaction failure caused by insufficient pressure using a conventional small compactor and prevents the leakage and overflow of the grouting agent gradually moving upward through the grouting high pressure spraying to provide a uniform and effective filling of the grouting agent, Curing, and compaction of the resin.

After completing the grouting high-pressure injection process, it is possible to complete the entire maintenance method by additionally cleaning and arranging the vicinity of the construction site of the road and completing the compaction.

The embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection is to be construed in accordance with the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100: Precast block
110: Body
110H: Grouting material moving hole 110H ': Grouting material
115: Position fixing pin
120: Exhaust pillar
120H: Grouting material inlet groove 120H ': Grouting material outlet hole
125: Needle portion
130: first height-adjusting tab
140: second height-adjusting tab
100T: Inner opening space
H: Installation home
F1: Surface layer
F2: Base layer
F3: Supporting layer

Claims (12)

A body having a predetermined shape of an ascon or a concrete material and having at least one grouting movable hole along a longitudinal direction from an upper surface to a lower surface;
And a plurality of grouting outlet holes communicating with the grouting inlet grooves are formed on a surface of the grouting inlet groove, wherein an open side of the grouting inlet groove is formed in the grouting hole A discharge pillar connected to the bottom surface of the body so as to communicate with the bottom surface of the body;
A first height adjusting tab inserted into one side of the body so as to vertically move a supporting foot connected to a lower portion along a longitudinal direction of the body through a screw rotation; And
And a second height adjusting tab having the same structure as the first height adjusting tab and inserted into the other side of the inside of the body opposite to the mounting position of the first height adjusting tack.
Precast blocks for road maintenance.
The method according to claim 1,
Wherein the body is provided with an annular structure having a predetermined diameter along the longitudinal direction from the upper surface to the lower surface at the central portion and having an opened inner open space,
Wherein at least one grouting branch hole branched from the at least one grouting movement hole is formed in the body so as to communicate the at least one grouting movement hole and the inner open space,
Precast blocks for road maintenance.
The method according to claim 1,
A needle portion having a tip end structure is provided at a lower end of the discharge column,
And a plurality of position fixing pins projecting downward are provided on the bottom surface of the body
Precast blocks for road maintenance.
A step A of cutting the peripheral portion of the construction site to correspond to the shape and size of the precast block to be installed and providing the installation groove;
Performing a compaction of the inside of the installation groove to smooth a seating surface for installing the precast block;
A step D of installing a precast block including a body provided with at least one grouting element moving hole in the installation groove in which compaction is performed;
And an E step of injecting the grouting agent into the grouting moving hole of the precast block supported and mounted on the installation groove at a high pressure,
The pre-cast block, which is installed through step D,
A body having a predetermined shape of an ascon or a concrete material and having at least one grouting movable hole along a longitudinal direction from an upper surface to a lower surface; And
And a plurality of grouting outlet holes communicating with the grouting inlet grooves are formed on a surface of the grouting inlet groove, wherein an open side of the grouting inlet groove is formed in the grouting hole And a discharge pillar connected to the lower surface of the body so as to communicate with the lower surface of the body,
The grouting agent injected into the grouting movement holes of the precast block through the step E is injected and cured at a high pressure through a plurality of grouting hole holes formed in the discharge column of the precast block, And the precast block seated in the installation groove is reinforced and supported
Repair and construction method using precast block for road maintenance.
A step A of cutting the peripheral portion of the construction site to correspond to the shape and size of the precast block to be installed and providing the installation groove;
A step B for installing a specific construction structure in the center of the installation groove
Performing a compaction of the inside of the installation groove to smooth a seating surface for installing the precast block;
A step D of installing a precast block including a body provided with at least one grouting element moving hole in the installation groove in which compaction is performed;
And an E step of injecting the grouting agent into the grouting moving hole of the precast block supported and mounted on the installation groove at a high pressure,
The pre-cast block, which is installed through step D,
An annular structure provided with an inner open space having a predetermined diameter along the longitudinal direction from the upper surface to the lower surface at an intermediate portion thereof and provided with at least one At least one grouting branch hole branched from the grouting movement hole to communicate the grouting movement hole and the inner open space; And
And a plurality of grouting outlet holes communicating with the grouting inlet grooves are formed on a surface of the grouting inlet groove, wherein an open side of the grouting inlet groove is formed in the grouting hole And a discharge pillar connected to the lower surface of the body so as to communicate with the lower surface of the body,
The grouting agent injected into the grouting movement holes of the precast block through the step E is injected through the plurality of grouting outlet holes formed in the discharge column of the precast block and the at least one grouting branch hole, Wherein the gap between the installation groove and the precast block and the gap between the inner open space and the installation structure is filled and the precast block and the installation structure mounted in the installation groove are reinforced and supported
Repair and construction method using precast block for road maintenance.
6. The method according to any one of claims 4 and 5,
The step A is a step of providing an installation groove in which a subsidiary layer formed in a lower part of a base layer is exposed through cutting over a surface layer and a base layer of a road ground around a construction site,
The grouting material injected from the plurality of grouting material discharge holes on the surface of the discharge column of the precast block through the step E is injected into the grouting material through the auxiliary material layer Characterized in that it is filled up to the surface layer
Repair and construction method using precast block for road maintenance.
The method according to claim 6,
In the step A,
A-1 step of separating the periphery of the side of the block to be removed from the layer covering the surface layer and the base layer by performing cutting perpendicular to the plane of the ground to the base layer region of the road surface around the construction site; And
And step A-2 of separating the block from the auxiliary layer by raising the block separated from the surface layer and the ground layer from the side of the side surface through step A-1.
Repair and construction method using precast block for road maintenance.
6. The method according to any one of claims 4 and 5,
The grouting agent to be injected and injected at the high pressure through the step E is prepared by mixing an additive prepared by combining at least one of a main and cement mortar, a waterproofing agent and a water glass provided as an asphalt.
Repair and construction method using precast block for road maintenance.
6. The method according to any one of claims 4 and 5,
The pre-cast block, which is installed through step D,
A first height adjusting tab inserted into one side of the body so as to vertically move a supporting foot connected to a lower portion along a longitudinal direction of the body through a screw rotation; And
And a second height adjusting tab having the same structure as the first height adjusting tab and inserted into the other side of the inside of the body opposite to the mounting position of the first height adjusting tack,
The step (D)
A step D-1 for supporting the pre-cast block by supporting the first height-adjusting tab and the second height-adjusting tab on the seating surface; And
A D-1 step of screwing at least one of the first height adjustment tab and the second height adjustment tab so that the inclination of the pre-cast block seated in the installation groove is parallel to the surface of the periphery of the installation site, 2 &lt; / RTI &gt;
Repair and construction method using precast block for road maintenance.
6. The method of claim 5,
The step (D)
A D'-1 step of installing a precast block having an inner open space corresponding to a construction structure located at the center of the installation groove on a seating surface; And
And a D'-2 step of interconnecting the inner side surface defining the inner open space of the precast block installed in the installation groove and the outer side surface of the construction structure facing the inner side surface using fixing bolts. To
Repair and construction method using precast block for road maintenance.
5. The method of claim 4,
A step of forming a water tight space by inserting an elastic caulking member in a gap between the installation groove and the precast block before proceeding to the step E after the step D, And a step of applying E '
Repair and construction method using precast block for road maintenance.
6. The method of claim 5,
After step D, before proceeding to step E, an elastic caulking member is inserted into the clearance between the installation groove and the precast block and the gap between the inner open space and the installation structure to form a watertight space And a step E 'of applying a predetermined pressure to the elastic caulking member in a downward direction
Repair and construction method using precast block for road maintenance.

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