JP2004324161A - Method of repairing pavement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily, rapidly and safely repair pavement. <P>SOLUTION: A repair material 4 with an ordinary temperature asphalt paving material 6 divided and bagged beforehand is thrown into a pothole 3 or other places to be repaired. Traffic can be released immediately after construction, and the ordinary temperature asphalt paving material 6 in bags 5 is solidified receiving rolling compaction with the running of vehicles. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to pavement repair. The present invention can be applied to repair of cracks, depressions, and the like in addition to local small holes or potholes formed on the asphalt pavement surface. In the following, a case of a pothole will be described as a typical example of a repair target.
[0002]
[Prior art]
As shown in FIG. 1, an asphalt pavement 1 is formed on a roadbed 2 on which gravel or crushed stone is spread and hardened by a mixture 1 in which asphalt and an aggregate (such as pebbles) are mixed. In the asphalt pavement, the surface layer is scattered and scattered by the tire of the car, and the pothole 3 is easily formed. The formation of the pothole 3 hinders safe driving of the vehicle. In addition, if the pothole is left, peeling may proceed and the damaged portion may be enlarged.
[0003]
Conventionally, repair of a pothole is performed in the following procedure. First, refuse, foreign matter, and the like at the repair location are removed and cleaned. Next, a tack coat is applied by spraying an asphalt emulsion to improve the adhesiveness. After that, the heated asphalt pavement material is filled and spread, and compacted with a rammer (rolling machine) or the like to make the same height as the surrounding road surface. Depending on the depth of the pothole, double-layer finishing may be performed.
[0004]
In addition, although the above-mentioned repair can be performed by setting a traffic regulation on a road with a small traffic volume, it may not be possible to restrict the traffic on a road with a heavy traffic volume, and the repair work can be completed in a short time. There is a need. Therefore, emergency treatment may be performed using a room temperature asphalt pavement material that hardens even at room temperature. After filling an appropriate amount from a container such as a large bag containing 25 kg into a portion to be repaired with a scoop or the like, leveling using a scoop or a rake or the like, rolling is performed using a rammer or the like.
[0005]
[Patent Document 1]
JP-A-8-148331 (paragraph number 0002)
[Patent Document 2]
JP-A-8-302201 (paragraph number 0002)
[0006]
[Problems to be solved by the invention]
The repair method using the heated asphalt pavement material is not suitable for simple repair of a pothole or the like because it requires time and equipment for heating.
[0007]
Room temperature asphalt pavement materials have the advantage that they require no heating, can be operated quickly, and can be opened to traffic immediately after construction. However, there is a problem that if the vehicle passes before it is sufficiently hardened, it will peel off and fly. In addition, there is a method of coating with a mat-like asphalt material, but it is not suitable for simple repair of a pothole or the like due to its high cost.
[0008]
The main object of the present invention is to make it possible to repair pavements simply, quickly and safely.
[0009]
[Means for Solving the Problems]
The pavement repair method according to the present invention solves the problem by directly feeding a repair material in which a room temperature asphalt pavement material is packed in a bag into a repair target portion.
[0010]
If a relatively long time for repair can be ensured, rolling can be performed after the repair material is charged into the repair target location. As a result, the hardening of the room temperature asphalt pavement material is accelerated earlier and reaches a predetermined strength, as compared with a case where the rolling of the automobile is expected.
[0011]
The bag containing the room temperature asphalt pavement is preferably made of a flexible material. This is to ensure that the repair material is filled without gaps regardless of the shape of the portion to be repaired such as a pothole. In addition, when a plurality of repair materials are supplied, the bag should have flexibility in order to minimize the gap between them. In general, a flexible material often has elasticity, but elasticity is not always necessary.
[0012]
All the repair materials have the same content, and a plurality of materials having different content may be used. For example, by preparing one in which the contents are gradually changed, it is possible to flexibly adapt according to the size and shape of the repair target portion.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows a state in which the repair material 4 has been put into the pothole 3 of the asphalt pavement shown in FIG. 1, and FIG. 3 shows a state in which the repair material 4 has been subjected to rolling pressure and has the same height as the surroundings. . In this way, the repair material 4 which is made by packing the room-temperature asphalt pavement material into the pothole 3 and other places to be repaired is directly charged as it is.
[0014]
The repair material 4 is a bag 5 in which an appropriate amount of a normal-temperature asphalt pavement material 6 is sealed. The bag 5 does not necessarily have to be air-tight and water-tight, and it is sufficient that the contents do not spill out. Although the content is not particularly limited, it should be determined in consideration of the volume of potholes and other concave portions to be repaired which are usually experienced, and taking into account ease of handling and convenience in use. . Specific examples include a range of 0.2 kg to 50 kg, preferably 0.3 kg to 20 kg, and more preferably 0.5 kg to 10 kg. A plurality of types having different contents in stages may be prepared and used depending on the size and shape of the portion to be repaired.
[0015]
The room temperature asphalt pavement material 6 is a mixture of asphalt and an aggregate made of a mixture of coarse aggregate (crushed stone) and fine aggregate (sand) or an aggregate made of only fine aggregate and asphalt pavement at room temperature. Is possible. Since various types are commercially available, they can be appropriately selected from those and adopted.
[0016]
Examples of the material forming the bag 5 include cloth, paper, plastic, synthetic rubber, and synthetic leather. Any structure of a woven fabric, a knitted fabric, or a non-woven fabric may be used, and the fibers constituting them may be natural fibers or chemical fibers. Further, in addition to the form of a sheet or a film, it can be used in the form of a net. Furthermore, it is also possible to employ a bag having airtightness. Once constructed and the room temperature asphalt pavement material 6 has solidified, the bag 5 may be torn or lost. However, since the room-temperature asphalt pavement material 6 has a role of preventing scattering until the room-temperature asphalt pavement material 6 is sufficiently hardened, the room-temperature asphalt pavement material 6 that is damaged and included during transportation or construction spills out, and the pothole 3 to be repaired. It is necessary to have enough strength so that it does not easily break when it is put into the recess.
[0017]
It is preferable that the bag 5 is made of a material having a certain degree of flexibility so that the repair material 4 is filled into every corner of the recess such as the pothole 3. Flexible and stretchy fabrics such as nylon stockings may be more difficult to handle, but are suitable for packing in narrow gaps. The bag 5 may have a predetermined shape so that the room-temperature asphalt pavement material 6 is inserted, that is, the repair material 4 may have a specific three-dimensional shape such as a spherical shape, a rod shape, and a sheet shape. For example, bar-shaped repair materials are suitable for filling elongated cracks. The color of the bag 5 is usually preferably a dark color such as gray in the case of repairing asphalt pavement, but it is preferable that the bag 5 be of the same color in the case of repairing colored pavement.
[0018]
【Example】
An approximately circular pothole having a diameter of about 20 cm and a depth of about 4 cm formed on the pavement of the road was repaired in the following manner. First, a number of repair materials were prepared by weighing 1 kg of room temperature asphalt pavement material (product name "YK Ascon") and enclosing it in a bag made of nonwoven fabric. While waiting for the traffic light, the above three repair materials were put into the pothole. The time required during that time was 15 seconds. As a result of the operation of the vehicle, the room-temperature asphalt pavement material as a repair material was subjected to compaction, and reached sufficient strength after about one hour.
[0019]
【The invention's effect】
According to the present invention, the room-temperature asphalt pavement material which has been divided into small portions and packed in a bag is used as it is in the bag, so that the following effects can be obtained. That is, it is very easy to handle since it is only necessary to put an arbitrary number of repair materials into the pothole as it is according to the size of the construction site. In addition, since it is packed in a bag, the room temperature asphalt pavement material is not scattered to the surroundings, and it is almost unnecessary to clean up after the construction. Therefore, workability is greatly improved as compared with the conventional repair method. With the improvement of work efficiency, traffic can be opened immediately after construction. Thereafter, the room temperature asphalt pavement material is hardened by the rolling pressure caused by the passage of the vehicle. Even before it is completely cured, there is no peeling of the pavement surface and no scattering of aggregates after construction, and it is safe.
Furthermore, with the normal temperature asphalt pavement material packed in a bag, the contents, the content, the method of use, and any other items can be displayed on the bag.
[Brief description of the drawings]
FIG. 1 is a sectional view of an asphalt pavement having a pothole.
FIG. 2 is a cross-sectional view of asphalt pavement in a state where a repair material has been charged into a pothole.
FIG. 3 is a cross-sectional view of asphalt pavement in a state where the repair material has been subjected to compaction.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Asphalt pavement 2 Subgrade 3 Pothole 4 Repair material 5 Bag 6 Room temperature asphalt pavement material

Claims (3)

A pavement repair method characterized in that a repair material prepared by packing a room temperature asphalt pavement material in a bag in advance into a portion to be repaired is directly used. 2. The method of claim 1, wherein the bag is made of a flexible material. 2. A method for repairing a pavement according to claim 1, wherein a repair material having a stepwise different content is prepared.

Images