JP3189446U - Pavement - Google Patents

Abstract

[PROBLEMS] To provide sufficient water retention performance in actual use, and without using a chemical additive such as a cement-based solidifying agent or aggregating agent, at low cost and without increasing the load on the environment and the human body. To provide a pavement that makes it possible to prevent the fine powder of the pulverized product from being scattered and that the waste tiles can be sufficiently recycled and that weeds do not easily grow and are easy to use.
SOLUTION: A pavement 10 composed of waste tile pulverized material, on a road bed 12 formed on an original ground 20, has a particle size of 30 mm to 60% by weight. And a waste tile pulverized product mixture in which 70 to 40 weight percent of the waste tile pulverized product having a particle size of more than 3 mm and not more than 10 mm is laid at a layer thickness of 20 mm or more. The roadbed 14 and a surface layer 18 on which a waste tile pulverized product having a particle size of more than 2 mm and not more than 40 mm is laid.
[Selection] Figure 1

Description

  The present invention relates to a pavement.

Various proposals have been made so far for pavement bodies covering surfaces such as roads and parking lots. In recent years, some waste materials are effectively used by using the waste materials as materials constituting the pavement. As a pavement using such waste material effectively, for example, one disclosed in Patent Document 1 is known.
In Patent Document 1, a relatively large amount of waste tiles can be reused as a pavement material, and a high-value-added pavement is provided by utilizing the characteristics of earthenware waste tiles as a water retention layer. A possible paving technique is disclosed.

JP 2004-346580 A

The paving body described in Patent Document 1 is obtained by adding and aggregating a water-permeable water-retaining layer material kneaded by a mixer, with an aggregating agent added to the local soil and cement-based solidifying agent on the water-retaining layer. After that, it is formed by further spraying an aggregating agent on the upper surface of the water permeable water retaining layer. For this reason, there exists a possibility that the construction cost of a paving body will rise, and the load given to the environment and human body by use of a chemical additive may increase.
In addition, if a chemical additive such as a cement-based solidifying agent is not used, there is a problem that fine powder of waste tile ground material is scattered from the surface of the pavement.

Moreover, in the conventional pavement, only the waste tile pulverized product having a particle size of a predetermined size or more is used, and the waste tile pulverized product having a small particle size is hardly reused. For this reason, most of the fine powder of the waste tile pulverized product is disposed of, and there is a problem that the waste tile cannot be sufficiently recycled.
Furthermore, the pavement described in Patent Document 1 has a structure in which a large number of gaps exist inside, and air and sunlight can be easily inserted into the roadbed, so that there is a problem that weeds are likely to grow from the roadbed.

  Therefore, the present invention has sufficient water retention performance in actual use, does not use chemical additives such as cement-based solidifying agents and aggregating agents, and there is no risk of increasing the load on the environment or the human body at low cost. An object of the present invention is to provide a pavement that makes it possible to prevent the fine powder of the waste tile pulverized product from being scattered, and that the waste tile can be sufficiently recycled, and that weeds do not easily grow and are easy to use.

As a result of intensive studies to solve the above problems, the present inventors have conceived the following configuration.
That is, it is a pavement configured using waste tile pulverized material, and on the road bed formed on the original ground, the particle size is 30 to 60 weight percent of the waste tile pulverized product having a particle size of 3 mm or less, and the particle size is A roadbed in which a waste tile pulverized material mixture in which 70 to 40 weight percent of waste tile pulverized material of greater than 3 mm and less than 10 mm is mixed at 100 weight percent is laid with a layer thickness of 20 mm or more, and the roadbed A pavement characterized by having a surface layer on which a crushed waste tile having a particle size of more than 2 mm and not more than 40 mm is laid.
Thereby, since the chemical additive is not used, the load with respect to an environment or a human body can be eliminated. Moreover, the fine powder of waste tile ground material can also be used effectively. In addition, it is possible to provide a low-cost and easy-to-use pavement that prevents the fine powder of the waste tile pulverized material from scattering from the roadbed constituting the pavement and makes it difficult to grow weeds.

  Moreover, it is preferable that the layer thickness of the said surface layer is 20 mm or more. Thereby, scattering of the fine powder of the waste tile ground material from the roadbed can be prevented more reliably.

  It is also preferable that a culvert is laid on the roadbed or the roadbed. Thereby, even if it is a case where moisture is locally supplied to the pavement, moisture can be dispersed throughout the pavement.

Moreover, it is preferable that a perforated pipe is used as the underdrain, and it is more preferable that the perforated pipe is embedded in a concave groove excavated in the road bed.
More preferably, the inner space of the perforated pipe is filled with a water retention filler.
As described above, by using the perforated pipe as a culvert, once water is taken into the perforated pipe, rapid evaporation of water in the perforated pipe can be prevented by the outer peripheral surface of the perforated pipe. Thereby, it becomes possible to provide a pavement having better water retention performance.

  Moreover, it is also preferable that the waste tile pulverized material is composed of a plurality of types of waste tiles. Thereby, the pavement corresponding to the water retention performance and external appearance design which are requested | required in the construction site can be provided.

  According to the configuration of the pavement according to the present invention, it has sufficient water retention performance in actual use, and there is no risk of increasing the load on the environment and the human body at a low cost, while preventing the scattering of fine powder of waste tile ground material. It is possible to sufficiently recycle waste tiles, and to provide a pavement that is difficult to grow weeds and is easy to use.

It is sectional drawing of the pavement concerning 1st Embodiment. It is sectional drawing of the pavement concerning 2nd Embodiment.

  Hereinafter, an embodiment of a pavement according to the present invention will be specifically described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, a pavement 10 according to the present embodiment includes a roadbed 12 formed by excavating the original ground 20 and leveling the floor, and a waste tile crushed material laid on the roadbed 12. It has a roadbed 14 made of a mixture, a culvert 16 disposed on the roadbed 12, and a surface layer 18 laid on the rolled roadbed 14 and made of crushed waste tiles.

  The roadbed 14 laid on the roadbed 12 is a waste tile pulverized material mixture composed of a waste tile pulverized product having a particle size of 3 mm or less and a waste tile pulverized product having a particle size of more than 3 mm to 10 mm or less. is there. More specifically, with respect to the waste tile pulverized material mixture constituting the roadbed 14, the waste tile pulverized product having a particle size of 3 mm or less is 30 to 60% by weight, and the particle size is more than 3 mm to 10 mm or less. 70 to 40% by weight of the pulverized product is used, and the pulverized product is mixed so that the total of the weight percent of each waste tile pulverized product becomes 100%.

  In this way, by using waste tile pulverized material with a particle size of 3 mm or less, which has been disposed of in the past, as the roadbed material, the recycling rate of waste tile is improved and the amount of waste tile disposed of as waste is reduced. It can be greatly reduced. Further, since the particle size distribution state of the waste tile pulverized material in the waste tile pulverized material mixture becomes good, the roadbed 14 can be easily and reliably compacted. The roadbed 14 thus compacted has a high density, and the gaps in the roadbed 14 are reduced. That is, the supply of air and sunlight to the roadbed 14 is suppressed, and the roadbed 14 becomes hard, so that the roots of weeds hardly grow on the roadbed 14, and the herbicidal effect as the pavement 10 is improved.

  The waste tile pulverized product and the waste tile pulverized product mixture may be mixed as appropriate according to the water retention performance of the waste tiles. The waste tile pulverized material and the waste tile pulverized material mixture thus obtained can constitute the roadbed 14 and the surface layer 18 having desired water retention performance.

According to the results of the experiment conducted by the applicant, in the waste tile pulverized product having a particle size of 20 mm or less, the water retention rate of the waste tile pulverized product obtained from the waste tile called black Ibushi is comparable in particle size. It was more than 10 times the water retention rate of landscaping gravel and small grains, which are materials having dimensions. Similarly, the water retention rate of waste tiles obtained from unglazed tiles called red clay and white stones called stone stones is about 5 and 4 times the water retention rate of landscaping gravel and small grains. Met.
In addition, in the so-called powdered waste tile pulverized material that has been disposed of in the past, the water retention rate of the waste tile pulverized material obtained from the waste tile called black Ibushi is a material having the same particle size. The water retention rate of the mortar sand was 1.6 times. Similarly, the water retention rate of waste tile crushed material obtained from waste tile called unglazed red and waste stone called Ishizhou, which is red, is about 2.1 times and 1.3 times the water retention rate of mortar sand. It was about.
As described above, it is clear that the waste tile pulverized product has a high water retention rate as compared with soil having the same particle size.

  The waste tile pulverized material mixture that becomes the roadbed 14 is laid on the road floor 12 after a plurality of types of waste tile pulverized material are put into a mixing device (not shown) and sufficiently mixed. When laying the waste tile pulverized material mixture on the road bed 12, a culvert 16 may be laid as shown in FIG. The form of the underdrain 16 is not particularly limited, but a perforated tube is preferably used. In this embodiment, a perforated PVC pipe is adopted as an example of the perforated pipe. The waste tile pulverized material mixture laid on the road bed 12 is laid until it reaches a predetermined thickness while being compressed by a rolling device such as a vibration roller. The rolling can also be performed by so-called water tightening. It is preferable that the layer thickness dimension of the waste tile pulverized mixture (roadbed 14) after rolling is 20 mm or more. In the present embodiment, the layer thickness of the waste tile pulverized mixture (roadbed 14) after rolling is 75 mm.

The internal space of the perforated PVC pipe used as the underdrain 16 can be filled with the waste tile crushed material from which the glaze has been removed as the water retention filler 30. As the water-retaining filler 30 filled in the internal space of the perforated PVC pipe, it is preferable to use a waste tile pulverized product having a particle size of at least the same size as the waste tile pulverized product used for the surface layer 18.
According to the underdrain 16 filled with the water retention filler 30 as described above, the underdrain 16 can be provided with water retention while maintaining the drainage performance of the underdrain 16 when the water content of the roadbed 14 is saturated. In particular, according to the configuration of the underdrain 16 according to the present embodiment, the water supplied to the pavement 10 can be absorbed by the water retention filler 30 inside the perforated PVC pipe. Thereby, the water retention performance as the pavement 10 whole can be improved. Furthermore, the outer peripheral wall of the perforated PVC pipe can also contribute to the improvement of the water retention performance as the pavement 10 in that rapid evaporation of water taken into the internal space of the perforated PVC pipe is prevented.

  After the layer thickness of the roadbed 14 after rolling reaches a predetermined thickness or more, a waste tile pulverized material having a particle size of more than 2 mm and not more than 40 mm and having an appropriate color is laid on the roadbed 14, and a rolling device Thus, the pavement 10 is completed by forming the surface layer 18 by rolling until the layer thickness becomes 20 mm. By laying such a surface layer body 18, dust can be made hard to stand by preventing scattering of fine powder of the waste tile pulverized material mixture constituting the roadbed 14. Further, since the surface layer 18 is laid, sunlight can be prevented from being inserted into the roadbed 14, so that it is possible to provide the pavement 10 that is easy to use and does not easily grow from the roadbed 14.

According to the pavement 10 formed in this way, the surface layer 18 and the roadbed 14 have good water permeability during rainy weather, so that the surface layer 18 does not become muddy. Further, if waste ground pulverized material from which glaze has been removed in advance is used as the material for the roadbed 14 and the surface layer 18, it will not slip even in rainy weather, and water retention can be improved. That is, the pavement 10 can maintain good running performance even in rainy weather.
In addition, when the outside air temperature is low, moisture is retained by the waste tile pulverized material constituting the surface layer 18 and the roadbed 14, so that the pavement 10 does not freeze and the surface layer 18 and the roadbed 14 are lifted. Can be prevented.

  Further, when the outside air temperature is high, the waste tile pulverized material having a sufficiently large particle size is laid as the surface layer 18 with respect to the waste tile pulverized material used for the roadbed 14, and therefore the fine powder of the roadbed 14 may be scattered by drying. Is prevented. And if a user supplies water to the pavement 10 and makes the surface layer 18, the roadbed 14, and the water retention filler 30 retain water (water absorption) once, the water from the surface layer 18, the roadbed 14, and the water retention filler 30 Can be gradually evaporated. As a result, the ambient temperature around the pavement 10 can be lowered by the water spray effect, and the usability is good.

  Furthermore, even if the sun passes through the surface layer 18 and reaches the roadbed 14 because the roadbed 14 having a high density is formed by the waste tile pulverized mixture in which the particle size distribution is adjusted, The penetration depth of sunlight into the roadbed 14 can be extremely reduced. Further, since there is almost no gap in the roadbed 14, it has a structure in which roots such as air ingress and weeds are difficult to stick. As described above, since the roadbed 14 has a configuration in which weeds do not easily grow, the weedproof performance of the pavement 10 can be improved.

(Second Embodiment)
FIG. 2 is a cross-sectional view of the pavement according to the second embodiment.
In the present embodiment, the configuration in which the underdrain 16 is laid together with the waste tile pulverized material mixture in the portion of the groove 13 excavated on the surface of the road bed 12 is different from the first embodiment.
The underdrain 16 laid in the groove 13 may be connected to drainage means (not shown) that discharges excess water in the construction target area of the pavement 10 to the outside of the construction target area of the pavement 10. It is good also as a form simply laid in the construction object area | region. When the underdrain 16 is simply laid in the construction target area of the pavement 10, the underdrain 16 mainly functions as a water retaining part, and therefore it is preferable to employ a larger underdrain 16 than in the first embodiment.

Since the configuration other than the concave groove 13 disposed on the road bed 12 is the same as that of the first embodiment, the member numbers in FIG. 2 are assigned the same numbers as the member numbers used in the first embodiment. The detailed description here is omitted.
The basic functions and effects of the configuration of the pavement 10 according to the second embodiment are the same as the functions and effects of the pavement 10 according to the first embodiment. The use amount of the waste tile pulverized material mixture is increased by the amount of the groove 13 provided in the road bed 12, and the recycling degree of the waste tile is improved. Moreover, the improvement of the water retention performance as the paving body 10 can be expected by increasing the amount of the waste tile pulverized material mixture used and laying the perforated PVC pipe as the underdrain 16 in the deep part.

Although the pavement 10 according to the present invention has been described above based on the embodiment, the technical scope of the pavement 10 according to the present invention is not limited to the above embodiment. For example, the pavement 10 in the present embodiment rolls the surface layer 18, but the rolling process to the surface layer 18 is not essential.
In the present embodiment, the layer thickness of the roadbed 14 after rolling is 75 mm, but the layer thickness of the roadbed 14 may be further increased according to the weight of the vehicle passing over the pavement 10. Moreover, about the roadbed 14 in the pavement 10 of the part which a heavy article does not pass, such as a park or a promenade, what is necessary is just to have a layer thickness of 20 mm or more.

Moreover, in the above embodiment, although the form which laid the cauldron 16 on the road bed 12 or the roadbed 14 was demonstrated, you may abbreviate the cauldron 16 laying. Further, the water retaining filler 30 filled in the inner space of the perforated PVC pipe which is the underdrain 16 is not limited to the waste tile pulverized material from which the glaze has been removed, and waste tile pulverization from which the glaze has not been removed. Or other known materials. And the filling of the water-retaining filler 30 into the inner space of the perforated PVC pipe as the underdrain 16 is not an essential requirement.
Further, for the surface layer 18, a waste tile pulverized product having a particle size of more than 2 mm and 40 mm or less is used. Can also be used. Moreover, it is also possible to display the parking space of a parking lot etc. by using for the surface layer 18 the waste tile ground material which consists of multiple types of waste tiles from which color differs.

DESCRIPTION OF SYMBOLS 10 Pavement body 12 Subgrade 13 Groove 14 Subbase 16 Underdrain 18 Surface layer 20 Original ground 30 Filling material for water retention

Claims (7)

It is a pavement composed of waste tile pulverized material,
On the road bed formed on the original ground, 30-60 weight percent of waste tile pulverized product having a particle size of 3 mm or less and 70-40 weight percent of waste tile crushed product of particle size of more than 3 mm and 10 mm or less are 100%. A roadbed in which a waste tile pulverized material mixture mixed so as to have a weight percentage is laid with a layer thickness of 20 mm or more,
On the roadbed, a surface layer in which waste tile pulverized material having a particle size of more than 2 mm and not more than 40 mm is laid,
A pavement characterized in that it has.   The pavement according to claim 1, wherein the surface layer has a layer thickness of 20 mm or more.   The pavement according to claim 1 or 2, wherein a culvert is laid on the roadbed or the roadbed.   4. A pavement according to claim 3, wherein a perforated pipe is used as the underdrain.   The pavement according to claim 4, wherein the perforated pipe is embedded in a concave groove excavated in the road bed.   The pavement according to claim 4 or 5, wherein the internal space of the perforated pipe is filled with a water retention filler.   The pavement according to any one of claims 1 to 6, wherein the waste tile pulverized material is composed of a plurality of types of waste tiles.

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