JP2593771B2 - Freezing prevention road - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antifreezing road suitable mainly for paved roads in cold snowy regions.

[0002]

2. Description of the Related Art In cold regions, snow that has accumulated on the road surface or shoulders of asphalt-paved or concrete-paved roads is melted by daytime warm air or rainfall, and this molten water flows over the road surface and flows. Freezes on the road surface due to a decrease in temperature at night or the like.

[0003] The amount of molten water flowing on the road surface varies depending on the amount of snow, the slope of the road surface, and the like.
When flowing down an amount of m or more and flowing on a long flat road surface, the water depth becomes 0.5 mm or more, and the water accumulates on the road surface due to surface tension. If this freezes, an ice burn is formed on the road surface, which causes slippage when the vehicle is running, and also poses a danger to pedestrians walking.

[0004] The following method is known as a measure for preventing the molten water from flowing on the road surface and freezing at low temperatures such as at night. a. A pipe is buried under the road surface, and a heating medium such as hot water or antifreeze is circulated through the pipe to heat the road surface. Alternatively, a heating wire is buried under the road surface to heat the road surface. b. A snow melting agent is sprayed on the road surface in advance to promote melting of snow or lower the freezing point. c. A snow melting agent is previously mixed with the pavement material to promote the melting of snow or to reduce the freezing point. Further, after the freezing, the frozen ice is removed by human power or the like.

[0005]

However, the road surface heating system has a problem that it requires a large-scale construction, a long construction period, and a large cost for the construction. In addition, the method of spraying the snow melting agent on the road surface in advance or mixing the snow melting agent with the pavement material has a limited effective time and is complicated, and it is difficult to remove frozen ice by freezing after freezing. However, there is a problem that the removal of frozen ice requires a large amount of manpower on a wide and long road.

The present invention has been made in view of the above circumstances. It is an object of the present invention to solve the problem that snow accumulated on the road surface and shoulders of a road melts due to warm air and rain during the day and flows on the road surface. It is an object of the present invention to provide an antifreezing road capable of preventing molten water from freezing on a road surface due to a decrease in temperature at night or the like and causing an accident such as a slip.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a method of manufacturing a vehicle, comprising a method of forming a structure having a width of 4 to 10 mm and a depth of 4 on a road surface of a road paved with asphalt, concrete or the like. 10 ~ 10mm concave groove
It is to provide a large number at 35 mm intervals.

[0008] On the road surface, the width 4-1 extending in the width direction of the road
By providing a large number of concave grooves of 0 mm and a depth of 4 to 10 mm at intervals of 10 to 35 mm, the road surface is partitioned at intervals of 10 to 35 mm. The road surface of the road has a length of 10 to 35 mm, so that the surface tension becomes less effective, the molten water flows into the groove, and the depth of the molten water on the road surface is about 0.15 mm. When the depth of the molten water reaches about 0.15 mm,
Even if this freezes, the ice thickness becomes 0.15 mm or less, and the ice is broken by the foot pressure applied by the tires during running of the vehicle, so that slip can be prevented.

The width of the groove is 4 to 10 mm, preferably 6
The depth is about 4 mm, preferably about 6 mm. If the width exceeds 10 mm, the driver feels foreign objects, and the road surface becomes uneven, and the vehicle vibrates. If the width of the groove is smaller than 4 mm, the groove is liable to be crushed or clogged. When the depth of the groove is 10 mm or more, the formation of the groove becomes complicated, and when the depth is less than 4 mm, clogging is liable to occur.

The interval between the grooves is 10 to 35 mm, preferably about 20 to 35 mm. If it is smaller than 10 mm, the braking force of the vehicle may decrease during drying. The pavement may be either asphalt or concrete,
For asphalt pavement, the dynamic stability (DC) is 30
Hard asphalt pavement of 00 times / mm or more is preferred.
With such hard asphalt pavement, there is no danger of softening when the temperature rises in summer or the like, or crushing due to the addition of vehicle weight. In addition, for asphalt pavement, after completion of pavement,
It is preferable to form a concave groove on the road surface after increasing the density of the asphalt mixture by opening the traffic for two months or more.

The method of forming the grooves is not particularly limited. For example, a road surface cutting machine having one or a plurality of blades in parallel at a predetermined interval may be used to form the grooves after the pavement. Can be formed in the width direction of the road.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show the asphalt-paved road of the first embodiment, where 1 is a subgrade. On this subgrade 1, a subgrade 3, a base layer 4 and a surface layer 5 are provided as a pavement 2. The roadbed 3 and the base layer 4 are constructed by a known construction method.
It plays a role of dispersing the traffic load propagated from the vehicle and transmitting it to the subgrade 1. The base layer 4 has a role of uniformly transmitting the load from the surface layer portion 5 to the roadbed 3.

The surface layer 5 is composed of 45% by weight of crushed stone as coarse aggregate heated to 165 ° C. and sand 3 as fine aggregate.
6% by weight and stone powder (filler) 12 heated to 180 ° C.
% By weight and 7% by weight of Nichifalt HDS as binder
Are mixed with a mixer, and a fluid-resistant asphalt mixture having high dynamic stability, which is spread and rolled and compacted according to a conventional method, is formed.

When the asphalt pavement surface thus constructed is opened to traffic for about two months after completion of the pavement, the asphalt mixture is densified by the traveling vehicle, the density of the asphalt mixture increases, and the road surface 6 composed of the hard asphalt pavement surface is removed. It is formed.

Then, a large number of grooves 7 extending in the width direction of the road are formed on the road surface 6 by, for example, a road surface cutting machine having one or a plurality of blades in parallel at predetermined intervals. . The groove 7 is formed to have a width of about 4 to 10 mm, preferably about 6 mm, and a depth of about 4 to 10 mm, preferably about 6 mm. The interval between the concave grooves 7 is formed to be about 10 to 35 mm, preferably about 20 to 35 mm.

The large number of grooves 7 formed as described above do not cause the driver to feel a foreign object and do not give vibration to the vehicle during traveling. Further, the edge of the concave groove 7 is less likely to be crushed or clogged.

Therefore, in cold regions, etc., the snow accumulated on the road surface and shoulders of the road is melted by warm air and rain during the day, and even if the molten water flows on the road surface 6, the molten water on the road surface 6 flows into the groove 7. The water can flow down, and can be smoothly drained from the concave groove 7 to a drain port or the like, and it is possible to prevent the melted water from freezing on the road surface 6 due to a decrease in temperature at night or the like and forming a frozen layer.

That is, the road surface 6 in the longitudinal direction of the road is 1
The road surface is divided at intervals of 0 to 35 mm, and becomes a road surface having a length of 10 to 35 mm, so that surface tension becomes difficult to work, and most of the molten water flows into the concave groove 7. It is about 0.15 mm. Therefore, even if the molten water accumulated on the road surface 6 freezes, the ice thickness becomes 0.15 mm or less, and the tire is depressed by the tires during running of the vehicle to break the ice, so that slip can be prevented.

FIG. 3 shows a concrete-paved road according to the second embodiment. Reference numeral 8 denotes a subgrade. A roadbed 10 and a surface portion 11 are provided on the roadbed 8 as a pavement 9. The roadbed 10 is constructed by a known construction method, and plays a role of distributing the traffic load propagated from the surface layer portion 11 and transmitting the traffic load to the roadbed 8 as in the first embodiment. .

The surface layer 11 is made of gravel (coarse aggregate) 51.52.
Weight%, sand (fine aggregate) 28.38 weight%, cement 1
It is formed by paving according to a conventional method using a paving material made of cement concrete in which 4.36% by weight and 5.74% by weight of water are mixed in a concrete plant, and its road surface 12 is formed in the same manner as in the first embodiment. A number of similar grooves 13 are provided.

The width, depth and spacing of the grooves 13 are the same as those in the first embodiment. Snow accumulated on the road surface and shoulders of the road is melted by warm air and rain during the day, and Even if the molten water flows on the surface 12, the molten water on the road surface 12 flows down into the concave groove 13 and can be smoothly drained from the concave groove 13 to the drainage port. Freezing and formation of a frozen layer can be prevented.

In the first and second embodiments, a large number of grooves having the same width and the same depth are provided on the road surface at the same intervals. However, the width, depth and interval of the grooves are as follows. It may be partially changed depending on the condition of the road, for example, the location condition, the slope, the environment around the road, and the like.

[0023]

As described above, according to the present invention, a width of 4 to 10 m extending in the width direction of the road is provided on the road surface of the road paved with asphalt, concrete, or the like.
m, by providing a large number of concave grooves having a depth of 4 to 10 mm at intervals of 10 to 35 mm, snow accumulated on the road surface and shoulders of the road is melted by warm air and rain during the day, and the molten water flows on the road surface. However, most of the molten water flows down into the groove and is drained, so that the depth of the molten water on the road surface is at most about 0.15 mm. Therefore, even if the molten water accumulated on the road surface freezes due to a decrease in temperature at night or the like, the ice thickness is reduced to 0.15 mm or less, and the slip is prevented because the ice is broken by the tires when the vehicle is running and the ice is broken. it can. For this reason, unlike the conventional road surface heating system, construction does not require a great deal of cost, and it is semi-permanent compared to the method of spraying the snow melting agent on the road surface or mixing the snow melting agent with the pavement material. It is effective not only for the safety of the running of the vehicle but also for the walking of the pedestrian.

[Brief description of the drawings]

FIG. 1 is a plan view of a road showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line AA of FIG.

FIG. 3 is a sectional view of a road showing a second embodiment of the present invention.

[Explanation of symbols]

 6 road surface, 7 concave groove 12 road surface 13 concave groove

Claims (1)

(57) [Claims] 1. A width 4 extending in the width direction of a road on a road surface of a road paved with asphalt, concrete, or the like.
10 ~ 35mm, 4 ~ 10mm deep groove, 10 ~ 35m
An antifreezing road characterized by a large number of m-intervals.