Method for repairing road surface

Abstract

To prevent displacement of a road surface repair slab while maintaining easy and quick construction as a road surface repair method for temporarily restoring a road surface when the road surface of an expressway on which a heavy vehicle travels or the road surface of a runway on which an aircraft takes off and lands is damaged by an accident or construction.SOLUTION: After the road surface repair slabs 1 are arranged in the construction section 4 slightly wider than an outer shape of the arranged road surface repair slabs 1 while leaving a gap between an inner wall surface 41 of the construction section 4 and a side surface 12 of the road surface repair slab 1, crushed stones 8 are filled in the gap between the inner wall surface 41 of the construction section 4 and the side surface 12 of the road surface repair slab 1, and grout 7 is filled in the gap between the crushed stones 8.SELECTED DRAWING: Figure 15

Description

[Technical Field]

[0001] The present invention relates to a road surface repair method for temporarily restoring a road surface damaged by an accident or construction work. [Background technology]

[0002] When temporarily repairing a road surface damaged by an accident or construction work, a road surface repair method is used in which one or more road surface repair slabs are arranged in a construction area that is rectangular in plan view and cut out to surround the damaged area (Patent Document 1, Patent Document 2). The road surface repair method disclosed in Patent Document 1 involves providing flat road surface repair slabs (blocks for temporary road repair) that are rectangular in plan view with interlocking convex strips or concave grooves on opposing sides (Patent Document 1, Utility Model Registration Claims). The road surface repair slabs arranged in the construction area (groove) are connected by interlocking corresponding convex strips and concave grooves.

[0003] The road surface repair method disclosed in Patent Document 2 involves burying sand or gravel in a construction area (excavation site), and arranging hollow road surface repair slabs (temporary restoration blocks) in the construction area so that the interiors are filled with sand or gravel, with the bottoms (one-sided openings) open and the sides connected by reinforcing partition plates (Patent Document 2, Claims 1, 3, and 4).The road surface repair method disclosed in Patent Document 2 has the advantage that the road surface repair slabs arranged in the construction area are filled with gravel or crushed stone to stably fix them in place, and the hollow structure of the road surface repair slabs also makes them lightweight. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Publication No. 60-111906 [Patent Document 2] Japanese Patent Application Publication No. 63-000504 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional road surface repair methods ensure that the outer shape of the road surface repair panels to be arranged is the same as the construction area to prevent the road surface repair panels from moving. However, it is difficult to form the construction area to be the same as the outer shape of the road surface repair panels to be arranged, and gaps occur between the inner surface of the construction area and the side of the road surface repair panels, making it impossible to prevent the road surface repair panels from shifting out of position. The road surface repair method disclosed in Patent Document 1 connects the road surface repair panels to each other, and the road surface compensation method disclosed in Patent Document 2 fills the inside of the road surface repair panels with sand or gravel to prevent the road surface repair panels from shifting out of position, but these are not sufficient.

[0006] Thus, the road surface repair methods disclosed in Patent Documents 1 and 2, which provide insufficient prevention of displacement of the road surface repair plate, are not suitable for temporary restoration of road surfaces that require firm positioning of the road surface repair plate, such as the road surface of a highway where heavy vehicles travel or the road surface of a runway where aircraft take off and land. Therefore, measures to prevent displacement of the road surface repair plate while maintaining easy and quick construction were studied as a road surface repair method for temporarily restoring the road surface of a highway where heavy vehicles travel or the road surface of a runway where aircraft take off and land are damaged due to an accident or construction work. [Means for solving the problem]

[0007] What was developed as a result of the study is a road surface repair method in which road surface repair slabs that are square in plan view are arranged in a construction area that has been excised to surround the damaged area in order to temporarily restore road surface damaged by an accident or construction work.The road surface repair slabs are arranged in a construction area that is slightly wider than the outer dimensions of the road surface repair slabs to be arranged, leaving a gap between the inner wall surface of the construction area and the side of the road surface repair slabs, and then crushed stone is filled in the gap between the inner wall surface of the construction area and the side of the road surface repair slabs, and grout is filled in the gaps between the crushed stone.In this invention, the term "arranging" is used to refer to both cases, including when only one road surface repair slab is placed in a construction area, and when multiple road surface repair slabs are arranged closely or with spaces between them.

[0008] The road surface repair method of the present invention involves creating a gap between the inner wall surface of the construction section and the side of the road surface repair slab by creating a construction section that is slightly wider than the outer dimensions of the road surface repair slabs to be arranged, filling the gap with crushed stone, and then filling the gaps between the crushed stone with grout. The crushed stone fills the gap between the inner wall surface of the construction section and the side of the road surface repair slab regardless of its size or shape, indirectly restraining the road surface repair slab in position in the construction section. The grout filled into the gaps between the crushed stone forms a solidified mass that hardens the crushed stone, maintaining the state of positional restraint of the road surface repair slab by the crushed stone.

[0009] In the road surface repair method of the present invention, when filling gaps in the crushed stone with grout, the grout may be injected through injection holes that penetrate from the top to the bottom of the road surface repair slab, thereby filling the gap between the plane of the construction area and the bottom surface of the road surface repair slab. The injection holes enable the injection of grout between the plane of the construction area and the bottom surface of the road surface repair slab. The grout injected between the plane of the construction area and the bottom surface of the road surface repair slab adheres the road surface repair slab to the plane of the construction area and directly restrains the road surface repair slab in position relative to the construction area.

[0010] The road surface repair plate used in the road surface repair method of the present invention may have one or both of a plurality of spaced apart convex portions or concave portions. When a road surface repair plate with convex portions or concave portions on its side is filled with crushed stone in the gap between the inner wall surface of the construction area and the side surface of the road surface repair plate, the crushed stone is filled in the gaps excluding the convex portions and including the concave portions. The crushed stone filled in the gap between the inner wall surface of the construction area and the side surface of the road surface repair plate gets caught between adjacent convex portions and in each concave portion, more firmly restricting the position of the road surface repair plate relative to the construction area.

[0011] In the road surface repair method of the present invention, when arranging road surface repair panels within a construction area, the height and inclination of the road surface repair panels can be adjusted by adjusting the protrusion amount of a height adjustment tool protruding from the underside of the road surface repair panel and abutting the lower end of the height adjustment tool against the plane of the construction area. The height adjustment tool adjusts the posture of the road surface repair panels arranged in the construction area, making the upper surfaces of the roadbed repair panels flush with the surrounding road surface and with each other, and the upper surfaces of the arranged road surface repair panels. The height adjustment tool also creates a gap between the plane of the construction area and the underside of the road surface repair panel, allowing grout injected from the injection hole to spread throughout the entire construction area. [Effects of the Invention]

[0012] The road surface repair method of the present invention fills the gaps between the inner wall surface of the construction section and the side of the road surface repair slab with crushed stone and fills the gaps in the crushed stone with grout. Since the construction section only needs to be larger than the outer dimensions of the road surface repair slab to be lined up, there is no need to precisely cut the road surface, thereby reducing the labor and time required for road surface repair. However, the crushed stone and solidified grout that fill the gaps between the inner wall surface of the construction section and the side of the road surface repair slab indirectly restrain the road surface repair slab from being positioned in the construction section, thereby achieving a strong repaired road surface. Furthermore, filling the gaps between the plane of the construction section and the underside of the road surface repair slab with grout directly restrains the road surface repair slab from being positioned in the construction section, achieving an even stronger repaired road surface.

[0013] When a road surface repair plate with multiple convex or concave portions on its side is used, crushed stone can be caught between adjacent convex portions or in each concave portion, more firmly restraining the road surface repair plate relative to the construction area, resulting in a stronger repaired road surface. Furthermore, when a road surface repair plate with a height adjustment device is used, the top surface of the roadbed repair plate and the surrounding road surface, as well as the top surfaces of the road surface repair plates arranged side by side, are made flush with each other, resulting in a repaired road surface without any steps. The gap between the plane of the construction area and the bottom surface of the road surface repair plate created by the height adjustment device allows grout to be distributed throughout the entire construction area, ensuring that the road surface repair plate is directly and securely restrained in position by the construction area, resulting in a stronger repaired road surface. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view of an example of a road surface repair plate used in the present invention, seen from the top side. [Figure 2] FIG. 2 is a perspective view showing a defective portion of a road surface to be repaired. [Figure 3] FIG. 1 is a perspective view of a road surface showing repair procedure 1 in which a construction section has been formed in the road surface repair method using the road surface repair plate of this example. [Figure 4] FIG. 1 is a cross-sectional view of a road surface showing repair procedure 1 in which a construction section has been formed in the road surface repair method using the road surface repair panel of this example, viewed from the long side of the road surface repair panel. [Figure 5] This is a perspective view of the road surface showing repair procedure 2 in which a restored roadbed is formed in the construction area in the road surface repair method using the road surface repair plate of this example. [Figure 6] This is a cross-sectional view of the road surface, viewed from the long side of the road surface repair panel, showing repair procedure 2 in which a restored roadbed is formed in the construction area in the road surface repair method using the road surface repair panel of this example. [Figure 7] This is a perspective view of the road surface showing repair procedure 3 in which a vinyl sheet is laid in the work area in the road surface repair method using the road surface repair plate of this example. [Figure 8] This is a cross-sectional view of the road surface, viewed from the long side of the road surface repair panel, showing repair procedure 3 in which a vinyl sheet is laid in the work area in the road surface repair method using the road surface repair panel of this example. [Figure 9] This is a perspective view of the road surface showing repair procedure 4 in which two road surface repair panels are placed in the construction area in the road surface repair method using the road surface repair panels of this example. [Figure 10] This is a cross-sectional view of the road surface, viewed from the long side of the road surface repair panel, showing repair procedure 4 in which two road surface repair panels are placed in the construction area, in the road surface repair method using the road surface repair panel of this example. [Figure 11] This is an oblique view of the road surface showing repair procedure 5, in which crushed stone is filled into the gap between the inner surface of the construction section and the side of the road surface repair plate in the road surface repair method using the road surface repair plate of this example. [Figure 12] This is a cross-sectional view of the road surface, viewed from the long side of the road surface repair panel, showing repair procedure 5 in which crushed stone is filled in the gap between the inner surface of the construction area and the side of the road surface repair panel in the road surface repair method using the road surface repair panel of this example. [Figure 13] This is a perspective view of the road surface showing repair procedure 6 in which grout is injected onto the underside of the road surface repair plate in the road surface repair method using the road surface repair plate of this example. [Figure 14] This is a cross-sectional view of the road surface viewed from the long side of the road surface repair panel, showing repair procedure 6 in which grout is injected onto the underside of the road surface repair panel in the road surface repair method using the road surface repair panel of this example. [Figure 15] This is a perspective view of the road surface showing repair procedure 7 in which grout is injected around the road surface repair plate in the road surface repair method using the road surface repair plate of this example. [Figure 16] This is a cross-sectional view of the road surface seen from the long side of the road surface repair panel, showing repair procedure 7 in which grout is injected around the road surface repair panel in the road surface repair method using the road surface repair panel of this example. [Figure 17] This is a perspective view of a road surface showing repair procedure 4 in which two road surface repair panels are placed in a construction area in a road surface repair method using another example of road surface repair panels. [Figure 18] This is a cross-sectional view of the road surface, viewed from the short side of the road surface repair plate, showing repair procedure 5 in which crushed stone is filled in the gap between the inner surface of the construction area and the side of the road surface repair plate in a different example of a road surface repair method using a road surface repair plate. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The road surface repair method of the present invention utilizes a road surface repair slab 1 that is rectangular in plan view, as shown in Figure 1, for example. The road surface repair slab 1 in this example is a flat slab of a precast concrete block that is rectangular in plan view, with its long sides twice its short sides, and is equipped with reinforcing steel bars (not shown) inside. There is no limit to the number of road surface repair slabs 1 used in the road surface repair method of the present invention, and one or more may be used side by side to suit the construction area 4. The road surface repair method of this example uses two identical road surface repair slabs 1 that are flipped horizontally and with their side surfaces 12 in contact with each other (see Figure 9 and others below).

[0016] The road surface repair panel 1 of this example is equipped with height adjustment tools 3 and grout injection holes 112. The height adjustment tools 3 of this example are long bolts that are threaded through and into height adjustment tool inserts 33 embedded between the bottom of height adjustment tool recesses 111 provided in the upper surface 11 and the lower surface 13, and the amount of threading into the height adjustment tool insert 33 is adjusted by turning the bolt head 31 visible in the height adjustment tool recess 111, thereby adjusting the protruding position of the lower end protruding from the lower surface 13. Four height adjustment tools 3 of this example are provided near the four corners near the diagonal of the upper surface 11. The road surface repair panel 1 of this example has hanging tool inserts 113 arranged near each height adjustment tool 2.

[0017] The injection holes 112 in this example are through holes with an inverted truncated cone cross section that penetrate from the top surface 11 to the bottom surface 13 of the road surface repair panel 1, and three of them are provided at equal intervals from the middle of the short side of the road surface repair panel 1 in a direction parallel to the long side. As will be described later, the road surface repair method in this example also injects grout 7 between the inner wall surface 41 and the side surface 12 of the construction section 4 (filling portion), so that although the grout 7 can be made to wrap around from the side surface 12 side to the bottom surface 13 side, the grout to the bottom surface 13 side of the road surface repair panel 1 is mainly filled from the injection holes. The road surface repair panel 1 in this example has a half groove 121 formed by splitting the injection hole 112 in half on one of the side surfaces 12 on the long side.

[0018] The road surface repair method of this example will be described. The road surface repair method of the present invention is used, for example, as shown in Figure 2, when temporarily repairing a defective area 51 where a portion of the road surface 5 is missing from both the existing roadbed 52 and the ground 6. The road surface 5 to be repaired includes not only general roads, but also expressways on which heavy vehicles travel and runways on which aircraft take off and land. The road surface repair method of this example assumes the road surface 5 of a runway (thickness 300mm-400mm) and uses the road surface repair plate 1 of this example (thickness 150mm) to achieve rapid and solid temporary repair.

[0019] In the first repair procedure 1, as shown in Figures 3 and 4, the road surface 5 is excised in a square shape in plan view surrounding the defect area 51, and the existing roadbed 52 and ground 6 are sealed with backfill 521, 61. Crushed stone is used for the backfill 521 of the existing roadbed 52, and soil and sand is used for the backfill 61 of the ground 6. In this example, the road surface repair method involves arranging the sides 12 of two road surface repair decks 1 so that they are in contact with each other and using them as a square surface material in plan view. As a result, the construction section 4 formed by excising the road surface 5 is a square in plan view that is slightly larger than the two road surface repair decks 1 lined up, so as to create a gap between the inner wall surface 41 of the construction section 4 and the side surfaces 12, which are the outer surfaces of the two lined up road surface repair decks 1. In repair procedure 1, the construction section 4 still has the existing roadbed 52 exposed.

[0020] In repair procedure 2, as shown in Figures 5 and 6, the construction section 4 is completed by forming a restoration roadbed 44 by laying crushed stone on the exposed existing roadbed 52, leaving a thickness equivalent to the road surface repair plate 1 (in this example, the thickness of the road surface repair plate 1 + the thickness of the grout 7 on the underside 13 side). In this example, the road surface repair plate 1 is thinner than the road surface 5 intended for the runway, and the insufficient thickness is made up by the restoration roadbed 44. The restoration roadbed 44 is a continuous portion of the existing roadbed 52, ensuring the strength of the temporarily restored road surface 5. Since the existing roadbed 52 and the restoration roadbed 44 may be made of the same crushed stone, repair procedure 1 and repair procedure 2 may be combined, simultaneously filling in the missing areas 51 of the existing roadbed 52 and forming the restoration roadbed 44. The surface of the restoration roadbed 44 becomes the plane 42 of the construction section 4.

[0021] In the next repair procedure 3, as shown in Figures 7 and 8, a vinyl sheet 43 is laid on the plane 42 of the construction area 4, which is the surface of the restored roadbed 44. Because the vinyl sheet 43 is thin, the surface of the vinyl sheet 43 is now the plane 42 of the construction area 4. In this example, the road surface repair method fills the space between the plane 42 of the construction area 4 and the underside 13 of the road surface repair deck 1 with grout 7, in an area surrounding the road surface repair deck 1 (see Figures 14 and 15 below). The vinyl sheet 43 prevents the grout 7 from seeping out of the construction area 4. In this example, the vinyl sheet 43 covers the plane 42 and inner wall surface 41 of the construction area 4, but it may be large enough to cover the plane 42.

[0022] In the next repair procedure 4, as shown in Figures 9 and 10, two road surface repair panels 1 are lined up in the construction area 4. The road surface repair panels 1 are stored with the height adjustment device 3 removed, and when construction begins, the height adjustment device 3 is attached by screwing it into the height adjustment device insert 33 from above. It is recommended that the lower end of the height adjustment device 3 protrudes from the underside 13 of the road surface repair panel 1. The two road surface repair panels 1 used in this example are lined up in the construction area 4 with the long side surfaces 12 on which the half-split grooves 121 are provided tightly against each other (in Figure 9, compare the horizontal orientation of the road surface repair panels 1 already lined up in the construction area 4 with that of the road surface repair panels 1 that are about to be lined up in the construction area 4).

[0023] The road surface repair plate 1 is placed in the construction area 4 by attaching, for example, a hook (not shown) to the insert 113 for the hanging device, and hanging it with a crane (not shown). In the construction area 4, a metal ground plate 32 is placed in a position corresponding to the height adjustment device 3 on a flat surface 42 covered with a vinyl sheet 43. The road surface repair plate 1 is placed in the construction area 4 with the lower end of the height adjustment device 3 abutting against the ground plate 32, and then the bolt head 31 of the height adjustment device 3 is turned to increase or decrease the amount of protrusion from the lower surface 13 to adjust the height and inclination, thereby ensuring continuity between the surface of the existing road surface 5 and the upper surface 11.

[0024] The road surface repair deck 1, which has ensured continuity between the surface and upper surface 11 of the existing road surface 5, has not yet been fixed in position, leaving a gap between the inner wall surface 41 and the side surface 12 of the construction area 4. Therefore, in repair procedure 5, as shown in Figures 11 and 12, crushed stone 8 is packed into the gap between the inner wall surface 41 and the side surface 12 of the construction area 4, and the road surface repair deck 1 is fixed in position in the construction area 4 (see enlarged portion of Figure 12). The size of the gap between the inner wall surface 41 and the side surface 12 of the construction area 4 into which the crushed stone 8 is packed does not matter, but it is desirable to make the gap between the inner wall surface 41 and the side surface 12 of the construction area 4 as equal as possible so that the crushed stone 8 can be packed evenly.

[0025] The road surface repair deck 1, now in a state where crushed stone 8 has been filled into the gap between the inner wall surface 41 and the side surface 12 of the construction section 4, is then fixed in position in the construction section 4 with its height and inclination adjusted by the height adjustment device 3. However, although the height and inclination are stable, simply filling the crushed stone 8 into the gap between the inner wall surface 41 and the side surface 12 of the construction section 4 is insufficient to fix the position horizontally. For this reason, in this example, grout 7 is filled into the gap between the flat surface 42 of the construction section 4 and the underside 13 of the road surface repair deck 1, and into the gap in the crushed stone 8 filled in the gap between the inner wall surface 41 and the side surface 12 of the construction section 4, respectively, to firmly fix the road surface repair deck 1 in position.

[0026] First, in repair procedure 6, as shown in Figures 13 and 14, grout 7 is injected from injection hole 112 in road surface repair deck 1 to fill the gap between the flat surface 42 of the construction area 4 and the underside 13 of road surface repair deck 1 with grout 7. The grout 7 filled in the gap between the flat surface 42 of the construction area 4 and the underside 13 of road surface repair deck 1 mainly adheres road surface repair deck 1 to the flat surface 42 of the construction area 4, preventing the road surface repair deck 1 from shifting position relative to the construction area 4. It is sufficient for the grout 7 filled from injection hole 12 to spread mainly over the entire underside 13 of the road surface repair deck 1, and although it may reach the crushed stone 8 slightly, it does not need to penetrate.

[0027] 15 and 16, the final repair procedure 7 is to fill the gaps in the crushed stone 8 packed in the gaps between the inner wall surface 41 and the side surface 12 of the construction section 4 with grout 7, solidify the crushed stone 8 into one piece, and fix the gaps in the crushed stone 8 packed in the gaps between the inner wall surface 41 and the side surface 12 of the construction section 4, thereby preventing the road surface repair deck 1 from shifting in position in the horizontal direction. The crushed stone 8 with the grout 7 filled in the gaps becomes a concrete-like part using the crushed stone 8 as aggregate, which also improves its strength and firmly fixes the road surface repair deck 1 in position so that it does not shift in the horizontal direction. The recess 111 for the height adjustment tool opening on the top surface 11 of the road surface repair deck 1 may be left as it is, or may be blocked by injecting grout 7, for example.

[0028] The simplest road surface repair method of the present invention, as shown in Figures 17 and 18, is when a different example road surface repair deck 2 without injection holes, half-split grooves, or height adjustment devices is placed directly on the construction area 4. The construction area 4 where the different example road surface repair deck 2 is placed has almost the same configuration as this example, with missing areas 52 filled with backfill 521, 61 to form a restored roadbed 44, and the inner wall surface 41 and flat surface 42 covered with a vinyl sheet 43. In the construction area 4 where the different example road surface repair deck 2 is placed, a different example road surface repair deck 2 without height adjustment devices is placed directly on the construction area 4, and therefore the restored roadbed 44 is made slightly thicker by a height corresponding to the adjustment width of the height adjustment device.

[0029] The road surface repair panel 2 of the alternative example is a flat slab of precast concrete block having rectangular upper and lower surfaces 21 and 23 in plan view, and has the same thickness as the road surface repair panel 1 of the present example. The road surface repair panel 2 of the alternative example has convex portions 222 and concave portions 223, which are transfer shapes of a horizontally long rectangle when viewed from the front, arranged alternately and at equal intervals in the arrangement direction on the side surface 22. The road surface repair panel 2 of the alternative example has convex portions 222 and concave portions 223 arranged alternately on the front, rear, and left and right sides. The convex portions 222 and concave portions 223 can also be applied to the road surface repair panel 1 of the present example. The road surface repair panel 2 of the alternative example has four hanging device inserts 113 arranged in the same positions as the road surface repair panel 1 of the present example.

[0030] In another example, in repair procedure 4, two road surface repair panels 2 are lined up in the construction area 4 with the opposing convex portions 222 and concave portions 223 fitted together, and in repair procedure 5, crushed stone 8 is filled into the gap between the inner wall surface 41 and the side surface 22 of the construction area 4 to fix the position of the road surface repair panels 2 in the construction area 4. The road surface repair panels 2 are placed in the construction area 4 by attaching, for example, a hook (not shown) to the hanging tool insert 113, and being hung by a crane (not shown). The road surface repair panels 2, with the opposing convex portions 222 and concave portions 223 fitted together, are positioned relative to each other by the fitting of the convex portions 222 and concave portions 223, and are prevented from shifting position relative to each other (see the enlarged portion on the right in Figure 18).

[0031] Furthermore, the crushed stone 8 packed into the gap between the inner wall surface 41 and the side surface 22 of the construction section 4 not only fills the gap between the inner wall surface 41 and the side surface 22 of the construction section 4, but also fixes the position of the road surface repair plank 1 in the construction section 4 by sandwiching the convex portions 222 from above and below and by engaging with the concave portions 223 (see the enlarged portion on the left in Figure 18). As a result, when the road surface repair plank 2 of another example is used, the position is more firmly fixed by the crushed stone 8 compared to the road surface repair plank 1 of this example in which the crushed stone 8 is packed into the gap between the inner wall surface 41 of the construction section 4 and the side surface 12 which has no convex portions or concave portions.

[0032] In the repair procedure 7, the road surface repair plate 2 fills the gaps in the crushed stone 8 with grout 7, solidifying the crushed stone 8 into a single unit and fixing the gaps in the crushed stone 8 filled in the gaps between the inner wall surface 41 and the side surface 22 of the construction area 4, preventing the road surface repair plate 1 from shifting horizontally. The crushed stone 8 with the grout 7 filled into the gaps becomes a concrete-like part using the crushed stone 8 as aggregate, improving its strength and firmly fixing the road surface repair plate 1 in position so that it does not shift horizontally. By laying a vinyl sheet 43 covering the flat surface 42 and inner wall surface 41 in the construction area 4, the grout 7 does not spread to the surrounding area. [Explanation of symbols]

[0033] 1 Road surface repair version 11 Top side 111 Height adjustment recess 112 Injection hole 113 Insert for hanging device 12 Side 121 Half groove 13 Bottom side 2 Road surface repair version 21 Top side 213 Insert for hanging device 22 Side 222 convex part 223 Recess 23 Bottom side 3 Height adjustment tool 31 Bolt head 32 Ground plate 33 Height adjustment insert 4 Construction area 41 Inner wall surface 42 plane 43 Vinyl Sheet 44 Roadbed restoration 5 Road surface 51 Missing parts 52 Existing roadbed 521 Backfill 6 Ground 61 Backfill 7. Grout 8 Crushed Stone

Claims

1. A road surface repair method in which a square road surface repair plate is arranged in a construction area that has been cut out and surrounds the damaged area in order to temporarily restore the road surface that has been damaged due to an accident or construction work, This road surface repair method involves arranging road surface repair slabs in a construction area that is slightly wider than the outer shape of the road surface repair slabs to be arranged, leaving gaps between the inner wall surface of the construction area and the sides of the road surface repair slabs, and then filling crushed stone into the gaps between the inner wall surface of the construction area and the sides of the road surface repair slabs, and then filling grout into the gaps between the crushed stone.

2. A road surface repair method as described in claim 1, wherein when filling the gaps in the crushed stone with grout, the grout is injected through an injection hole that penetrates from the top to the bottom of the road surface repair plate, thereby filling the gaps between the plane of the construction area and the bottom surface of the road surface repair plate.

3. A road surface repair method as described in either claim 1 or 2, in which, when arranging road surface repair panels within a construction area, the height and inclination of the road surface repair panels are adjusted by adjusting the amount of protrusion of a height adjustment device protruding from the underside of the road surface repair panel and abutting the lower end of the height adjustment device against the plane of the construction area.

Images