JP2007146647A - Method of repairing road including curbstone, and road structure including curbstone formed by the repair method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrain curbstone laid on a vehicle access road going over the curbstone from a driveway and crossing a sidewalk to lead to a road side, from being lifted and springing up to result in damage such as cracking due to alternate load received when a passing vehicle crosses the sidewalk in a road with the curbstone laid at a boundary between the driveway and the sidewalk, to repair an already damaged part of curbstone of the road in a short time, and to shorten a curing time after repair to shorten a passing limited time followed by repair work to thereby return the repaired road early to public use. <P>SOLUTION: After removing the damaged curbstone from an existing concrete foundation, a surface layer of the existing concrete foundation is chipped off to form an uneven structure, and a resin concrete floor slab formed by mixing inorganic filler powder and silica sand into thermosetting synthetic resin is formed on the surface layer of the uneven structure. Curbstone formed by impregnating synthetic resin into a bottom face and hardening it after applying substrate treatment to the bottom face is disposed and joined onto the resin concrete floor slab, and the disposed joint part is heated and hardened. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a road repair method including a curb (curb concrete block) that separates a roadway and a sidewalk, and a road structure formed by the repair method.

  On ordinary roads, the curb laid at the boundary between the roadway and the sidewalk plays an extremely important role in preventing traffic accidents and maintaining the safety of pedestrian and vehicle traffic. On the other hand, in an environment where the traffic volume of vehicles and pedestrians increases, the damage to the curb installation places on the road is also increasing, and the current situation where these damaged conditions are neglected is seen throughout the country. In particular, in the curb laid on the vehicle approach road that crosses the curb from the roadway and crosses the sidewalk to the side of the road, it receives an alternating load frequently when crossing the sidewalk of a passing vehicle, so due to the alternating load, Many curb damages such as curb lift, bounce, and cracking have occurred. Therefore, in order to maintain the safety of road traffic, repair the damaged curb of the road that has already occurred in a short time, and shorten the curing time after the repair to reduce the traffic limit time associated with repair work as much as possible. Therefore, it is strongly desired to return the repair road to public use at an early stage, and there is a need for a means for a newly installed curb to withstand damage factors over a long period of time.

However, in the past, in repairing damaged curb stones on roads, a mortar floor slab was placed on the existing concrete foundation, a new curb was placed on the mortar floor slab, and the mortar had to dry. The curb is fixed on the existing concrete foundation, and the road structure including the conventional curb and the repair method have low durability and the repair of the curb fixing part against vibrations from the passing vehicles and the above-mentioned alternating load. Since the curing after completion takes a long time, the early opening of the road after repair work is also restricted, and it is not cost-effective. Moreover, there is no useful technical proposal to replace the conventional road structure including the curb and the repair method for the damaged curb. Incidentally, in the technical field to which the present invention belongs, Japanese Patent Laid-Open No. 6-81111 (Patent Document 1), Japanese Patent Application Laid-Open No. 11-293616 (Patent Document 2), Japanese Patent Application Laid-Open No. 2006-322281 (Patent Document 1). Patent Document 3) and the like can be seen, but none of them is conscious of the actual road conditions and social expectations for them, and cannot respond to the above social demands.
Japanese Patent Laid-Open No. 6-81111 Japanese Patent Laid-Open No. 11-293616 Japanese Patent Laid-Open No. 2006-322281

  In view of the road actual situation and social necessity as described above, the present invention is a road in which a curb is laid on the boundary between the roadway and the sidewalk. The curbstones laid on the vehicle approach road that crosses the roadside are prevented from causing damage such as lifting, jumping, cracking, etc. due to the alternating load received when crossing the sidewalk of a passing vehicle. The purpose is to repair the damaged road curb in a short time, shorten the curing time after repair, reduce the traffic restriction time associated with the repair work, and quickly return the repair road to public use. .

  The road structure repair method including the curb according to the present invention, which was devised to solve the above-mentioned problems, is a road in which a curb is laid on the boundary between the roadway and the sidewalk, after removing the damaged curb from the existing concrete foundation, The surface layer of the existing concrete foundation is removed to form a non-land structure, and on the surface layer of the non-land structure, a resin concrete floor slab composed of a thermosetting synthetic resin and inorganic filler powder and silica sand is formed. A curb stone impregnated and hardened with a synthetic resin is disposed on the bottom surface of the concrete floor slab after being ground-treated in advance, and the curving stone is heated and cured.

  The road structure including the curb according to the present invention, which has been devised to solve the above problems, is obtained by suspending the surface layer of an existing concrete foundation from which the curb has been removed on a road laid with a curb at the boundary between the roadway and the sidewalk A resin concrete floor slab composed of a thermosetting synthetic resin and inorganic filler powder and silica sand is formed on the surface layer of the non-land surface structure. It is a road structure in which curb stones impregnated and cured with resin are arranged and joined, and the arranged joints are heated and cured.

  And, according to the road structure including the curb formed by the repair method according to the present invention, the surface layer of the existing concrete foundation is removed to increase the surface area to a desired position on the surface layer of the uneven structure. Because the curb is securely and firmly fixed in a stable state through the resin concrete floor slab, the curb can withstand vibrations caused by vehicle traffic over a long period of time and does not easily peel off the existing concrete foundation. As for curbs laid on the vehicle approach road that crosses the curb from the roadway and crosses the sidewalk to the side of the road, the alternating load applied due to the traffic of vehicles that frequently enter and exit the vehicle approach path on the sidewalk for a long time It can withstand and suppress damages such as curb lift, bounce, and cracks. In addition, when repairing a curb breakage on a road that has already occurred, after removing the damaged curb from the existing concrete foundation, the surface layer of the existing concrete foundation is removed to form a non-land structure. A thermosetting resin concrete floor slab is formed, and a curb stone pre-treated with a bottom surface and impregnated and hardened with a synthetic resin is disposed and bonded on the resin concrete floor slab. Because it can be heated and cured automatically, the repair can be completed in an extremely short time, and the curing time after the repair can be shortened, greatly reducing the time limit for traffic associated with repair work. Thus, the repair road can be returned to public use at an early stage. Therefore, it has a great effect as an emergency repair measure for roads.

  One of the best embodiments of the present invention is that, on a road in which a curb is laid at the boundary between the roadway and the sidewalk, the damaged curb is laid on a vehicle approach road that crosses the sidewalk from the roadway to the side of the road. After removing from the existing concrete foundation, the surface layer of the existing concrete foundation is lifted to form a non-land structure, and on the surface layer of the non-land structure, a resin concrete floor composed of a thermosetting synthetic resin and inorganic filler powder and silica sand. A step of forming a plate, placing a curb stone impregnated and hardened on the bottom surface of the resin concrete floor slab after pretreatment of the bottom surface in advance and bonding it, and heating and curing the arranged joint This is a method for repairing road structures including curbs.

  In another preferred embodiment of the present invention, in a road in which a curb is laid at the boundary between the roadway and the sidewalk, the curbstone damaged by being laid in a vehicle approach road that crosses the sidewalk from the roadway, crosses the curbstone to the roadside. A resin concrete floor slab made of thermosetting synthetic resin and inorganic filler powder and silica sand is formed on the surface layer of the non-land structure formed by removing the surface layer of the existing concrete foundation. A road structure road structure including a curb, in which a curb stone impregnated and hardened with a synthetic resin is disposed and bonded on a floor slab, and the disposed joint is heat-cured.

  The present invention will be described below with reference to the drawings. FIG. 1 is a plan view of an essential part of a road structure including a curb showing an embodiment of the present invention. FIG. 2 is a partial cross-sectional view taken along line 1A-A 'of the road structure including the curb. FIG. 3 is a partial cross-sectional view taken along the line 1B-B 'of the road structure including the curbstone.

  In the figure, 1, 1a is a curbstone, 2 is a roadway, 3 is a sidewalk, and curbstones 1 and 1a are laid on the boundary between the roadway 2 and the sidewalk 3 to divide the roadway 2 and the sidewalk 3. Reference numeral 4 denotes a vehicle approach road that crosses the sidewalk 3 from the roadway 2 to the side of the road, and the curb 1 a is laid at the boundary between the roadway 2 and the sidewalk 3 at the entrance of the vehicle entrance path 4. 5 and 6 are a parking lot and a store located on the side of the road, respectively. A vehicle heading from the road 2 to the parking lot 5 or the store 6 crosses the sidewalk 3 along the vehicle entrance path 4 over the curb 2a from the road 2. Go in and out of the parking lot 5 and the store 6. Since the curb 2a is frequently subjected to a large alternating load due to the load of the vehicle that frequently reciprocates on the vehicle approach path 4, in the conventional road structure including the curb, the curb is caused by the alternating load. The curb corresponding to 1a was often damaged.

  7 is an existing concrete foundation of a road. When repairing a damaged curb laid on the existing concrete foundation 7 according to the present invention, the damaged curb is removed from the existing concrete foundation, and then the existing concrete foundation 7 The surface layer of the non-land structure 7a is removed, and a resin concrete floor slab 8 is formed on the surface layer of the non-land structure 7a. The resin concrete floor slab 8 is formed by mixing inorganic filler powder and silica sand. On the floor slab 8, the curb 1 or curb 1a impregnated and hardened with a synthetic resin is preliminarily treated and bonded to the bottom slab 8. The curb is hardened in a short time by hot air forced heating. After the curing, the curb joint 10 is filled with pre-prepared mortar. In addition, CL is a roadway center line and GL is a roadway pavement surface line.

As a result, the curb is stable and strong in a stable position via a thermosetting resin concrete slab at the desired position on the surface layer of the non-land structure where the surface area of the existing concrete foundation is removed to increase the surface area. Because it is fixed to the curb, the curb can withstand vibrations caused by the traffic of the vehicle for a long time and does not easily peel off from the existing concrete foundation. The installed curb can withstand long-term alternating loads caused by the traffic of vehicles that frequently enter and exit the sidewalk, and can suppress damage such as curb lifting, jumping, and cracking. . In addition, when repairing a curb breakage on a road that has already occurred, after removing the damaged curb from the existing concrete foundation, the surface layer of the existing concrete foundation is removed to form a non-land structure. A thermosetting resin concrete floor slab is formed, and a curb stone pre-treated with a bottom surface and impregnated and hardened with a synthetic resin is disposed and bonded on the resin concrete floor slab. Because it can be heated and cured automatically, the repair can be completed in an extremely short time, and the curing time after the repair can be shortened, greatly reducing the time limit for traffic associated with repair work. Thus, the repair road can be returned to public use at an early stage.
In addition, CL is a roadway center line and GL is a roadway pavement surface line.

  As is clear from the above embodiment, according to the road structure including the curb according to the present invention and the repair method thereof, the curb is firmly bonded and fixed to the existing concrete foundation in a short time, and vibrations and alternations received from a passing vehicle are obtained. Withstands the load for a long time, and repairs of damaged curb points can be completed in a very short time, and the curing time after repair can be shortened. The repair road can be returned to public use at an early stage, and as a result, the cost-effectiveness of the repair work will increase. Therefore, it can be expected to be used in the road maintenance industry.

  The principal part top view of the road structure containing the curb which shows one Example of this invention.   The fragmentary sectional view which follows the FIG. 1A-A 'line of the road structure containing the curb.   The fragmentary sectional view which follows the FIG. 1B-B 'line of the road structure containing the curb.

Explanation of symbols

1: Curb 1a: Curb (curb laid at the vehicle entrance)
2: Roadway 2a: Pavement layer 3 of the roadway: Sidewalk 3a: Pavement layer 4 of the sidewalk: Vehicle approach path from the roadway across the curb to the side of the road across the sidewalk 5: Parking lot 6: Store 7: Existing concrete foundation 7a : Non-land structure 8: Resin concrete floor slab 9: Bottom surface of curb, synthetic resin-impregnated hardened part / Bottom of curb stone, arrangement joint 10: Joint part CL: Roadway center line GL: Roadway pavement surface line

Claims (4)

  After removing the damaged curb from the existing concrete foundation on the road where the curb is laid on the boundary between the roadway and the sidewalk, the surface layer of the existing concrete foundation is removed to form a non-land structure, and heat is applied to the surface of the non-land structure. A resin concrete floor slab formed by blending inorganic filler powder and silica sand into a curable synthetic resin is formed, and a curb stone that has been impregnated and cured with synthetic resin on the same bottom surface is prepared on the resin concrete floor slab in advance. A method for repairing a road structure including a curb characterized in that it is disposed and joined, and the disposed joint is heated and cured.   In a road with a curb at the boundary between the roadway and the sidewalk, after removing the damaged curb from the existing concrete foundation after removing the damaged curb from the roadway, crossing the curb and crossing the sidewalk to the side of the road, A surface of the surface of the non-land surface structure is formed, and on the surface layer of the surface of the non-land surface, a resin concrete floor slab composed of a thermosetting synthetic resin and inorganic filler powder and silica sand is formed. In addition, a curb stone with a synthetic resin impregnated and hardened on the bottom surface is preliminarily treated and bonded to the bottom surface, and the joint portion is heated and cured to repair the road structure including the curb. Method.   On a road with a curb at the boundary between the roadway and the sidewalk, a thermosetting synthetic resin with inorganic filler powder and silica sand on the surface of an uneven structure formed by removing the surface of the existing concrete foundation from which the damaged curb was removed A resin concrete floor slab is formed, and a curb stone impregnated and cured with synthetic resin is disposed on the bottom surface of the resin concrete floor slab, and the joint is heated and cured. Road structure including curb characterized by   In a road with a curb at the boundary between the roadway and the sidewalk, the surface of the existing concrete foundation is removed by removing the damaged curb from the roadway, crossing the sidewalk and crossing the sidewalk to the side of the road. A resin concrete floor slab composed of a thermosetting synthetic resin and an inorganic filler powder and silica sand is formed on the surface layer of the non-land structure, and the synthetic resin is formed on the bottom surface of the ground surface of the resin concrete floor slab. A road structure including a curb, characterized in that a curb stone impregnated and hardened is disposed and joined, and the joint part is heat-cured.

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