Method for constructing outdoor ground or outdoor court

Abstract

To provide a construction method of a high-quality outdoor ground or outdoor coat allowing the deformation of an ascon layer expanded or contracted caused by the different thermal expansion coefficients of the ascon layer composed of asphalt or the like and a surface layer.SOLUTION: An outdoor ground or an outdoor coat 1 is constructed by forming a surface layer 5 including rubber chips or a hard coat on an ascon layer 3 for preventing the protrusion and crack of the ascon layer 3 composed of asphalt or concrete. A slit 30 having a different thermal expansion coefficient between the ascon layer 3 and the surface layer 5 and having a gap capable of deforming the ascon layer 3 expanded or contracted caused by warming is formed on an upper surface 31 of the ascon layer 3, and the surface layer 5 is formed on the ascon layer 3 formed with the slit 30 through an insulating sheet.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention is directed to an outdoor ground or outdoor court. To This belongs to the technical field of construction methods, and more specifically, it is an outdoor ground or outdoor court that allows the deformation of the asphalt layer, which expands or contracts due to the different thermal expansion coefficients between the asphalt layer and the surface layer, and prevents the asphalt layer from swelling or cracking. To This relates to construction methods. [Background technology]

[0002] As a technology relating to outdoor grounds or courts, for example, in Patent Document 1 below, the applicant has developed an all-weather athletics track structure characterized by forming a topping layer by scattering and adhering regular or irregular rubber chip material or elastic plastic chip material onto the surface of an open-grained asphalt concrete layer formed during the construction process of an all-weather athletics track, or onto the surface of a rubber chip urethane layer laid over the open-grained asphalt concrete layer, and applying adhesive to the entire surface of each scattered and adhered chip material to coat each chip material with the adhesive and also to adhere each coated chip material (see claim 1 in Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 4-85402 Summary of the Invention [Problem to be solved by the invention]

[0004] The thermal expansion coefficients of the asphalt or concrete layer and the surface layer containing rubber chips or hard coat applied thereon are different. Therefore, as the surface layer is exposed to sunlight for a long period of time, the asphalt concrete layer will expand and contract.The asphalt concrete layer will also expand and contract due to the rise in temperature caused by global warming in recent years. As a result, since the surface layer is bonded to the asphalt concrete layer, the difference in thermal expansion coefficients causes the surface layer above the expanding and contracting asphalt concrete layer to bulge and crack. In this regard, the same problem occurs with the surface of the open grain asphalt concrete layer in Patent Document 1 and the rubber chip urethane layer laid over it.

[0005] Therefore, the object of the present invention is to allow the deformation of the asphalt layer, which expands or contracts due to the different thermal expansion coefficients between the asphalt layer and the surface layer, and to prevent the asphalt layer from swelling or cracking, thereby producing a high-quality outdoor ground or outdoor court. To To provide a construction method. [Means for solving the problem]

[0006] The invention described in claim 1 as a means for solving the problem Is, A A construction method for an outdoor ground or outdoor court (1) that forms a surface layer (5) containing rubber chips or hard coat on the asphalt or concrete asphalt or concrete asphalt layer (3) that prevents the asphalt or concrete layer (3) from swelling or cracking. A step of forming slits 4 having voids that allow the asphalt concrete layer 3 to deform when the asphalt concrete layer 3 expands or contracts due to the different thermal expansion coefficients of the asphalt concrete layer 3 and the surface layer 5 or due to global warming on the upper surface 31 of the asphalt concrete layer 3 when the asphalt concrete layer 3 is poured; forming the surface layer 5 on the asphalt concrete layer 3 in which the slits 30 are formed; The construction method for an outdoor ground or court is characterized by comprising the steps of:

[0007] Claim Section 2The invention described in the above is a construction method for an outdoor ground or outdoor court 1, in which a surface layer 5 containing rubber chips or hard coat is formed on an asphalt or concrete asphalt layer 3 that prevents the asphalt layer 3 from swelling or cracking, A step of forming slits 30 having voids that allow the asphalt concrete layer 3 to deform when it expands or contracts due to the different thermal expansion coefficients of the asphalt concrete layer 3 and the surface layer 5 or due to global warming on the upper surface 31 of the asphalt concrete layer 3 beforehand when the asphalt concrete layer 3 is poured; A step of laying an insulating sheet 4 on the asphalt concrete layer 3 in which the slits 30 are formed, which separates the asphalt concrete layer 3 from the surface layer 5; forming the surface layer 5 on the insulating sheet 4 laid on the asphalt concrete layer 3; The construction method for an outdoor ground or court is characterized by comprising the steps of:

[0008] Claim 3 The invention described above is characterized in that the slits 30 are formed in a grid pattern on the upper surface 31 of the asphalt concrete layer 3. 1 or 2 This is a construction method for an outdoor ground or outdoor court described above.

[0009] Claim 4 The described invention is characterized in that the insulating sheet 4 is adhered to the surface layer 5. Section 2 This is a construction method for an outdoor ground or outdoor court described above.

[0010] Claim to 5 The described invention is characterized in that the insulating sheet 4 is made of rubber or acrylic. 2 or 4 This is a construction method for an outdoor ground or outdoor court described above.

[0011] Claim to 6 The described invention is characterized in that the asphalt concrete layer 3 is formed on a crushed stone base layer 6. 1 or 2 This is a construction method for an outdoor ground or outdoor court described above. [Effects of the Invention]

[0012] According to the outdoor ground or outdoor court and construction method of the present invention, slits with gaps that allow the asconcrete layer, which expands or contracts due to the different thermal expansion coefficients of the asphalt or other material and the surface layer, to deform when the asconcrete layer is poured, and the surface layer is formed on top of the asconcrete layer with the slits formed therein. This allows the asconcrete layer, which expands or contracts due to the different thermal expansion coefficients of the asconcrete layer and the surface layer, to deform, preventing the asconcrete layer from swelling or cracking, thereby achieving a high-quality outdoor ground or outdoor court. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is an enlarged cross-sectional view showing the construction procedure of an outdoor court according to one embodiment of the present invention, showing the first process diagram showing the asphalt concrete layer pouring stage. [Figure 2] Following Figure 1, the second process diagram shows the stage where slits are formed on the top surface of the asphalt concrete layer. [Figure 3] Following Figure 2, the third process diagram shows the stage where an insulating sheet is laid on top of the asphalt concrete layer with slits formed. [Figure 4] FIG. 4 is an enlarged cross-sectional view of an outdoor court completed by forming a surface layer on the asphalt concrete layer on which the insulating sheet of FIG. 3 has been laid. [Figure 5] 5 is an enlarged cross-sectional view of a corner of the completed outdoor court in FIG. 4, viewed obliquely from above. [Figure 6] This is a partially cutaway plan view of an outdoor court with an insulating sheet laid on top of an asphalt concrete layer with slits formed in it. BEST MODE FOR CARRYING OUT THE INVENTION

[0014] The outdoor ground or outdoor court of the present invention To A preferred embodiment of the construction method will be described below with reference to the drawings. In this embodiment, construction of an outdoor court 1 (for example, approximately 36 m long and approximately 20 m wide) suitable for a hard court such as a tennis court will be described, but construction can also be carried out on an outdoor ground in the same way (see Example 2 described later). The outdoor court 1 is completed through the steps shown in Figures 1 and 2 (see Figure 5).

[0015] <First Example> The outdoor court 1 in this embodiment is formed by forming a surface layer 5 including a hard coat on an asphalt or concrete asphalt layer 3 that prevents the asphalt layer 3 from swelling or cracking. That is, slits 30 having gaps that allow the asphalt concrete layer 3 to deform as it expands or contracts due to the different thermal expansion coefficients of the asphalt concrete layer 3 and the surface layer 5 or due to global warming are formed on the upper surface 31 of the asphalt concrete layer 3, and an insulating sheet 4 is laid on top of the asphalt concrete layer 3 with the slits 30 formed thereon to separate the asphalt concrete layer 3 from the surface layer 5, and the surface layer 5 is formed on top of the insulating sheet 4. It is also possible to employ a configuration in which the insulating sheet 4 is not laid down (not shown).

[0016] Below, we will explain how to construct an outdoor court. FIG. 1 shows the stage of pouring an asphalt concrete layer 3 (first step). An asphalt or concrete layer 3 (40-70 mm thick) made of permeable asphalt or concrete is formed on a crushed stone base layer 6 (150 mm thick or more) that covers the entire area of ​​the outdoor court 1 (see Figure 4). Note that a culvert (not shown) may be provided below the crushed stone base layer 6. The thermal expansion coefficient of the asphalt concrete layer 3 is approximately 25×10 −6 ° C. In contrast, the thermal expansion coefficient of the layer 5, which will be described later, is approximately 70×10 −6 ° C.

[0017] FIG. 2 shows the step of forming slits 30 in the asphalt concrete layer 3 (second step). As shown in Figure 6, the slits 30 are formed in advance on the top surface 31 of the asphalt concrete layer 3 to be poured over the entire area of ​​the outdoor court 1 in a grid-like shape when viewed from above, with a predetermined depth. For example, the depth of the slits 30 is preferably about 10 mm, and the spacing between adjacent slits 30 is preferably about 250 mm. The slits 30 serve as a space for allowing deformation of the asphalt concrete layer 3 which expands or contracts due to the different thermal expansion coefficients of the asphalt concrete layer 3 and the surface layer 5, etc. In this embodiment, the slits 30 are shown as being formed in a grid-like shape when viewed in a planar direction, but they can also be formed in various other planar shapes, such as vertical rows, parallel rows, diagonal lines, and circles.

[0018] FIG. 3 shows the stage of laying the insulating sheet 4 (third step). An insulating sheet 4 is laid on the asphalt concrete layer 3 with the slits 30 formed therein to separate the asphalt concrete layer 3 from the surface layer 5 (see FIG. 6). Note that the insulating sheet 4 is not bonded to the asphalt concrete layer 3. The insulating sheet 4 is preferably made of water-permeable (or non-water-permeable) rubber or acrylic, and is approximately 1 mm thick to ensure a certain degree of weight. Its size is about the same as that of the asphalt concrete layer 3 with the slits 30 formed in it.

[0019] 4 and 5 show the stage of forming the surface layer 5 (fourth step). On top of the insulating sheet 4 laid on the asphalt concrete layer 3, a base surface layer 5 (8 mm thick) is formed by adhering (bonding) to the insulating sheet 4. For the surface layer 5, for example, a thin base coat of paint is applied, and then a top coat layer of special resin paint is applied on top of that to form a hard coat. Thus, a high-quality outdoor court 1 is completed that allows deformation of the asphalt concrete layer 3, which expands or contracts due to the different thermal expansion coefficients of the asphalt concrete layer 3 and the surface layer 5, and effectively prevents the asphalt concrete layer from swelling or cracking.

[0020] <Second Example> The surface layer 5 described above is an embodiment suitable for a hard-coat outdoor court 1, but a surface layer 5 containing rubber chips can also be implemented. In other words, even for an outdoor ground formed with a surface layer 1 made of rubber chips coated with urethane, by forming slits 30 on the upper surface 31 of the asphalt concrete layer 3 in the same manner as in the first embodiment above and then forming the surface layer 5 on top of that, a high-quality outdoor ground can be completed that effectively prevents the asphalt concrete layer 5 from swelling or cracking, just like the outdoor court 1.

[0021] Although the embodiments have been described above based on the drawings, it should be noted that the present invention is not limited to the illustrated examples and includes the range of design modifications and application variations that are normally made by those skilled in the art, provided that they do not deviate from the technical concept of the present invention. [Explanation of symbols]

[0022] 1 outdoor court 3 Asphalt layer 30 slits 31 Top side 4. Insulation sheet 5 Surface layer 6 Crushed stone base layer

Claims

1. An outdoor ground or court that has a surface layer containing rubber chips or hard coat formed on an asphalt or concrete asphalt layer that prevents the layer from swelling or cracking. An outdoor ground or outdoor court characterized in that slits having gaps that allow the asphalt concrete layer to deform as it expands or contracts due to the different thermal expansion coefficients of the asphalt concrete layer and the surface layer or due to global warming are formed on the upper surface of the asphalt concrete layer, and the surface layer is formed on top of the asphalt concrete layer with the slits formed.

2. An outdoor ground or court that has a surface layer containing rubber chips or hard coat formed on an asphalt or concrete asphalt layer that prevents the layer from swelling or cracking. An outdoor ground or outdoor court characterized in that slits having gaps that allow the asphalt concrete layer to deform as it expands or contracts due to the different thermal expansion coefficients of the asphalt concrete layer and the surface layer or due to global warming are formed on the upper surface of the asphalt concrete layer, an insulating sheet is laid on top of the asphalt concrete layer with the slits formed to separate the asphalt concrete layer from the surface layer, and the surface layer is formed on top of the insulating sheet.

3. A construction method for outdoor grounds or outdoor courts in which a surface layer containing rubber chips or hard coat is formed on an asphalt or concrete asphalt layer that prevents the layer from swelling or cracking. A step of forming a slit having a gap in the upper surface of the asphalt concrete layer in advance when the asphalt concrete layer is poured, the slit having a gap that allows the asphalt concrete layer to deform when the asphalt concrete layer expands or contracts due to the different thermal expansion coefficients of the asphalt concrete layer and the surface layer or due to global warming; forming the surface layer on the asphalt concrete layer in which the slits are formed; A construction method for an outdoor ground or an outdoor court, comprising:

4. A construction method for outdoor grounds or outdoor courts in which a surface layer containing rubber chips or hard coat is formed on an asphalt or concrete asphalt layer that prevents the layer from swelling or cracking. A process of forming a slit having a gap that allows the asphalt concrete layer to deform when the asphalt concrete layer expands or contracts due to the different expansion and contraction coefficients of the asphalt concrete layer and the surface layer or due to global warming, in advance on the upper surface of the asphalt concrete layer when the asphalt concrete layer is poured; A step of laying an insulating sheet on the asphalt concrete layer in which the slits are formed to separate the asphalt concrete layer from the surface layer; forming the surface layer on the insulating sheet laid on the asphalt concrete layer; A construction method for an outdoor ground or an outdoor court, comprising:

5. 5. The construction method for an outdoor ground or outdoor court according to claim 3 or 4, wherein the slits are formed in a grid pattern on the upper surface of the asphalt concrete layer.

6. 5. The construction method for an outdoor ground or an outdoor court according to claim 4, wherein the insulating sheet is adhered to the surface layer.

7. 7. The construction method for an outdoor ground or court according to claim 4 or 6, wherein the insulating sheet is made of rubber or acrylic.

8. 5. The construction method for an outdoor ground or an outdoor court according to claim 3 or 4, wherein the asphalt concrete layer is formed on a crushed stone roadbed layer.

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