JP2010275723A - Road surface mixed type marking line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a road marking line having long durability and suppressing a slip on the surface in rainy weather. <P>SOLUTION: White sand is scattered in a position to lay the marking line when the road surface maintains softness still in a warm state immediately after asphalt paving construction. Then rolling compaction is promptly performed with a tamper or a roller to pressurize so that the white sand enters the pavement surface. With these processes, the white sand can be pressure-mixed into the pavement surface and visualized as the marking line, and the slip on the surface by a conventional melting paint can be avoided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a road marking such as a lane boundary line and a road center line marked on a road surface.

  Conventionally, road markings such as a lane boundary line, a road center line, a pedestrian crossing, a parking lot demarcation line (hereinafter referred to as a marking line) are generally applied by a method using a meltable paint. Among them, as shown in (for example, see Patent Document 1), glass beads are mixed into a meltable paint to improve the visibility at night or in the rain using light reflections (for example, see Patent Document 2). Many have an anti-slip effect by providing irregularities on the surface, as in (.).

JP-A-5-156614 Japanese Patent No. 3091996

  However, in the method of applying a meltable paint, the applied marking line is often damaged due to peeling and cracking due to aging, and it is difficult to maintain the original shape of the marking line due to damage due to snow removal work and peeling due to freezing in snowy areas. It has become. In addition, the paint is worn out depending on the frequency of traffic and is extremely inferior in visibility. Therefore, it is necessary to construct a marking line every year. In addition, since the surface is made of paint, it is very slippery when it rains, and it is dangerous not only for vehicles but also for pedestrians and bicycles.

  Therefore, the present invention differs from the conventional method of applying a meltable coating material by pulverizing a white substance having hardness, for example, white natural stone, and having fine particles close to granular or powdery (hereinafter referred to as white sand). Use.

As for the construction method, when the road surface just after asphalt pavement construction is still warm and soft, spray white sand on the position where the marking line is laid. Immediately after that, it is rolled with a tamper or roller, and pressurized so that white sand enters the pavement surface. By these steps, white sand is pressed into the pavement surface and can be visually recognized as a marking line.

  Therefore, the marking line constructed using white sand has a rough surface unlike the painted surface, so it is difficult to slip even in rainy weather, and can be said to be safe for vehicles and pedestrians. In addition, it was possible to avoid the rain, which was dangerous because water was accumulated on the pavement surface surrounded by the marking line. Also, there is no influence on peeling or cracking, and it is possible to maintain the visibility of what is worn in the same way as the wear on the pavement surface even when the traffic is heavy.

Furthermore, it is also possible to draw letters and patterns on the road surface in the same way as paint by dissolving white sand with water or the like to make it into a liquid state and then adding pressure to the road surface.

Laying situation diagram Laying section enlarged view Laying section enlarged plan view Aa cross section BB cross section

  As for the form, the particle size of white sand will be explained first. The intrusion of pressurized mixture occurs both when the pavement surface is dense-grained asphalt concrete and the coarse-grained asphalt concrete with soundproofing and water permeability that is often seen recently. It seems appropriate to use white sand mixed with coarse particles to ensure thickness, for example, equivalent to aggregates of coarse asphalt concrete and fine particles to enhance visibility.

Next, the construction method will be described. Immediately after the completion of the asphalt pavement construction, construction in a state in which the road surface is kept warm and soft is desirable. However, when the road surface is cold or when it is to be constructed on an existing road surface, it is considered appropriate to lay white sand while heating the location of the marking line with a burner or the like and then immediately roll it. In addition, although the pavement surface must be soft, it can be constructed without heating by a burner because a certain degree of softness can be obtained when the road surface is hot like under hot summer.

Next, a method for laying white sand will be described. When a vehicle is used as a laying method by spraying, a spray tube 3 is provided in the vehicle 1 as shown in FIG. A white sand receiver 4 is provided at the tip of the spraying cylinder for evenly spraying the discharged white sand. Therefore, it is set to discharge a certain amount of white sand from the spray cylinder, and the spraying operation is performed while the vehicle is operated at the vehicle speed calculated from the discharge amount. Of course, it is the best method if it is possible to change the discharge amount to an appropriate amount according to the vehicle speed, but it is mechanically sophisticated.

Then, the laying formwork 5 for laying the discharged white sand in a line is attached to the vehicle by the laying formwork support part 7. It is desirable that the laying formwork 5 be installed in close contact with the road surface. However, when the work is carried out in close contact, it is affected by the difference in height of the road surface and the inclination of the vehicle, so that a load is applied to the laying formwork support part 7, and thus the support part needs to be treated by a biasing means. In addition, windshields 6 are attached to the upper and lower sides of the road surface appropriately so as not to affect the white sand laying on both sides of the laying formwork. Further, by using the windshield 6 and setting it, for example, 5 mm higher than the road surface, it is possible to spread the thickness of the dispersed white sand.

As another laying method, water, adhesive, or other liquid material for making white sand into an emulsion is mixed in the white sand, and then laid by the same application method as the conventional marking line construction method. A method of pressing is conceivable. However, considering that the road surface temperature of the coated surface is lowered in the case of construction in the emulsion, it is possible to construct at a time when the road surface temperature is high, or to heat and construct the emulsion raw material.

Finally, when explaining the color of white sand, for example, if the natural stone color used as white sand is white, lane boundaries, roadside lines, pedestrian crossings, etc., that is, road markings currently used as white I can respond. Moreover, if the color of white sand is used, for example, yellow of natural stone, it can be applied to the road center line of the overtaking prohibited area. Moreover, when the color of natural stone is not clear, a colorant can be added or it can respond flexibly. Of course, the color is not limited, and various correspondences are possible.

In addition, not only natural stones but also artificial stones, sand, porcelain, glass, resin, etc. can be used easily as long as they have strength that can be applied and heat resistance that can be applied.

DESCRIPTION OF SYMBOLS 1 Vehicle for laying 2 Road surface 3 Spreading cylinder 4 White sand receptacle 5 Laying formwork 6 Windshield 7 Laying formwork support part

Claims (2)

  The road marking line is obtained by pulverizing white or single-color natural stone, spraying the particles in the same shape as the road marking line immediately after the asphalt pavement construction, and then quickly rolling with a roller or the like and pressurizing the road surface. Road marking type marking line characterized by using as a.   The road surface mixed type marking line according to claim 1, wherein a raw material having a workable strength and heat resistance such as artificial stone, sand, ceramics, glass, and resin is used as a substitute for natural stone.

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