Floor structure having improved heat dissipation function using EPDM elastic pavement material for sports facilities and construction method thereof

Abstract

According to an aspect of the present invention, a floor structure having an improved heat dissipation function and using an EPDM elastic pavement material for sports facilities includes a multilayer structure of an upper layer, an intermediate layer, and a lower layer, wherein the upper layer is obtained by dispersing a heat dissipation additive composite in a matrix formed of a mixture of EPDM rubber particles and a polyurethane binder, the intermediate layer is a buffer layer having shock absorption and heat conduction functions, and the lower layer is a base layer having waterproof and adhesive functions.

Description

Floor structure using EPDM elastic paving material for sports facilities with enhanced heat dissipation function and construction method thereof

[0001] The present invention relates to a floor structure and construction method using an EPDM (Ethylene Propylene Diene Monomer)-based elastic paving material used in sports facilities, sports fields, playgrounds, etc., and in particular, to a floor structure and construction method that effectively disperses heat accumulation caused by sunlight to suppress the rise in surface temperature and exhibits optimal performance during the on-site mixing process.

[0002] Flooring materials installed in sports facilities, athletic fields, and playgrounds must possess various functional characteristics, such as shock absorption, slip resistance, and durability, to ensure user safety and provide a pleasant exercise environment. EPDM elastic paving materials, widely used for this purpose, are manufactured by mixing EPDM rubber particles with a polyurethane binder and offer advantages such as shock absorption, durability, and weather resistance.

[0003] However, floor structures using conventional EPDM elastic paving materials have a problem where the surface temperature rises significantly when exposed to sunlight for extended periods. Generally, the surface temperature of flooring materials in outdoor sports facilities often rises considerably higher than the ambient temperature during the summer.

[0004] Furthermore, since most existing EPDM elastic paving materials are manufactured as finished products in factories and installed on-site, it is difficult to reflect the specific characteristics of the site environment, and modifications or improvements after installation are not easy. In particular, there were limitations in achieving optimized performance under various climatic conditions and usage environments, and re-installation was frequently required.

[0005] Furthermore, while there were various patents regarding elastic paving materials containing EPDM and their installation methods based on existing technologies, most of them lacked consideration for heat dissipation effects. Additionally, there were issues such as poor economic feasibility due to the large amount of photocatalytic material added to the rubber chips, and a failure to consider optimization during the on-site mixing process.

[0006] The present invention aims to solve the problems associated with conventional EPDM elastic paving materials for sports facilities. One objective of the present invention is to provide a sports facility floor structure with improved heat dissipation capabilities and a construction method thereof, which can resolve user inconvenience and safety issues caused by excessive surface temperature rise of the sports facility flooring material.

[0007] Another objective of the present invention is to provide a sports facility floor structure and a construction method thereof that can prevent the deterioration of durability and premature deterioration of the paving material itself due to high temperatures.

[0008] Another objective of the present invention is to provide a construction method for a sports facility floor structure that can be customized to the site environment and can exhibit performance optimized for various climatic conditions and usage environments.

[0009] Another objective of the present invention is to provide an economical sports facility floor structure and a method for constructing the same that can exhibit effective heat dissipation performance with only a small amount of additives in the production process.

[0010] Another objective of the present invention is to provide a sports facility floor structure with improved thermal management performance and a method for constructing the same by applying innovative technologies such as photothermal conversion and a multi-stage curing protocol.

[0011] However, the purpose of the present invention is not limited to what has been described above, and implementing all effects intended to be achieved in the present invention falls within the scope of the problems intended to be solved by the present invention.

[0012] The present invention provides the following technical means to achieve the above objective.

[0013] According to one aspect of the present invention, a floor structure using an EPDM elastic paving material for sports facilities with enhanced heat dissipation function comprises a multilayer structure of an upper layer, an intermediate layer, and a lower layer, wherein the upper layer is a matrix formed of a mixture of EPDM rubber particles and a polyurethane binder in which a heat dissipation additive composite is dispersed, the intermediate layer is a cushioning layer having shock absorption and heat conduction functions, and the lower layer is composed of a base layer having waterproofing and adhesive functions.

[0014] In particular, the above-mentioned heat dissipation additive composite exhibits effective heat dissipation performance even when added in a small amount of 0.08 to 0.12 weight percent based on the total amount of EPDM rubber particles and polyurethane binder. This is a very innovative feature compared to general additives, which require more than a few percent to show an effect.

[0015] The heat dissipation additive composite of the present invention comprises 30-40 wt% of photothermal conversion ceramic microparticles having heat reflection and near-infrared wavelength conversion functions, 25-35 wt% of thermally conductive inorganic particles, 20-30 wt% of visible light responsive photocatalytic material, 5-10 wt% of dispersion stabilizer, and an organic binder constituting the remainder of the matrix. This multifunctional composite exhibits superior heat dissipation performance through a synergy effect compared to a single-function additive.

[0016]

[0017] Visible light-responsive photocatalytic materials have a structure in which ferrocene-derived iron oxide is deposited on an inorganic oxide, and they exhibit photoactivity in a wavelength range of 400 nm or longer, making their activity in the visible light region superior to that of general photocatalysts. In addition, photothermal conversion ceramic microparticles fundamentally reduce heat generation by absorbing near-infrared wavelengths that generate heat in sunlight and converting them into the visible light region.

[0018] The middle layer is designed to include breathable channels with a diameter of 1-5 mm to provide heat dissipation and moisture control functions. These breathable channels serve as passages that allow heat generated in the upper layer to be rapidly transferred and dispersed to the lower layer.

[0019] According to another aspect of the present invention, a method for constructing a floor structure using an EPDM elastic paving material for sports facilities with enhanced heat dissipation function comprises the following steps. First, a heat dissipation additive complex is mixed on-site with EPDM rubber particles and a polyurethane binder. Subsequently, a lower layer having waterproofing and adhesive functions is constructed, an intermediate layer having shock absorption and heat conduction functions is constructed, and then an upper layer is constructed using the mixture.

[0020] In particular, during the on-site mixing stage, 80g to 120g of a heat dissipation additive complex is added based on a total weight of 100kg of EPDM rubber particles and binder, and the mixture is uniformly mixed for 5-10 minutes at a temperature above room temperature. This on-site mixing method can be customized to suit the environmental conditions of the construction site, thereby enabling optimal performance.

[0021] In addition, the construction method of the present invention includes a self-diagnostic curing step that secures an optimal curing time through surface thermal image analysis using a thermal imaging camera after the construction of each layer. This step consists of an initial curing step performed at room temperature for 4-6 hours according to a multi-stage curing protocol, an intermediate stabilization step performed at 30-40 degrees for 2-3 hours, and a final curing step performed at room temperature for 24-48 hours. If non-uniform curing is detected during the final curing step, it may include an additional step of promoting curing locally using an external heat source to ensure uniform quality.

[0022] Through these means of solving the problem, the present invention effectively resolves the issues of excessive surface temperature rise and lack of field adaptability of the conventional technology, and at the same time, can achieve an excellent heat dissipation effect with only a small amount of additive.

[0023] A sports facility floor structure according to one embodiment of the present invention can effectively disperse heat accumulation caused by sunlight and suppress the rise in surface temperature through a multi-layer structure and a heat dissipation additive composite, thereby providing an excellent temperature reduction effect of about 5 to 10 degrees indoors and about 15 degrees on-site compared to general products.

[0024] A sports facility floor structure according to one embodiment of the present invention has the advantage of excellent cost efficiency and the ability to enable construction optimized for various environmental conditions by adding only a small amount of heat-dispersing additive composite relative to EPDM rubber particles and binder, and adopting an on-site mixing method.

[0025] A sports facility floor structure according to one embodiment of the present invention has the effect of fundamentally reducing heat generation and effectively suppressing the rise in surface temperature by introducing photothermal conversion ceramic microparticles that absorb near-infrared wavelengths (700-1400 nm) of sunlight and convert them into the visible light region.

[0026] A sports facility floor structure according to one embodiment of the present invention has the effect of obtaining an additional temperature reduction effect by providing surface moisture activation and evaporative cooling effects through photocatalytic reactions, wherein a visible light-responsive photocatalytic material exhibits photoactivity in a wavelength range of 400 nm or more.

[0027] A construction method for a sports facility floor structure according to one embodiment of the present invention has the effect of minimizing internal stress and ensuring uniform quality and long-term durability by applying a self-diagnostic curing step using a thermal imaging camera and a multi-stage curing protocol (initial curing - intermediate stabilization - final curing) during the construction process.

[0028] A sports facility floor structure according to one embodiment of the present invention provides heat release and moisture control functions through an intermediate layer structure including a breathable channel, thereby preventing heat accumulation and creating a comfortable usage environment, which has the effect of significantly improving the safety and convenience of users.

[0029] FIGS. 1 to 3 are data included in the test report for Example 1, which was tested indoors while comparing the embodiment and comparative example of the present invention. FIG. 1 is a schematic diagram showing the situation of the experiment conducted indoors, FIG. 2 is a thermal imaging camera image of samples measured indoors (comparative example (left) and embodiment (right)), and FIG. 3 is a table showing the maximum temperature measured according to the measurement time.

[0030] FIGS. 4 to 6 are data included in the test report for Example 2, which was tested outdoors while comparing the embodiment of the present invention with a comparative example. FIG. 4 is a photograph showing the situation of the outdoor test, FIG. 5 is a thermal imaging camera image of samples measured outdoors (comparative example (left) and embodiment (right)), and FIG. 6 is an image of samples introduced for temperature measurement.

[0031] Figure 7 is a graph showing indoor and field test surface temperatures measured in comparison between an embodiment of the present invention and a comparative example.

[0032] Figure 8 is the cover of a test report from the Korea Institute of Construction and Living Environment Testing, containing the data of Figures 1 to 7.

[0033]

[0034] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, various modifications may be made to the embodiments, and thus the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, and substitutions to the embodiments are included within the scope of the rights.

[0035] The terms used in the embodiments are for illustrative purposes only and should not be interpreted as intended to be limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0036] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the embodiments pertain. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0037] In addition, when describing with reference to the attached drawings, identical components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. In describing the embodiments, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the embodiments, such detailed description is omitted.

[0038] In addition, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the embodiments. These terms are intended only to distinguish the components from other components, and the nature, order, or sequence of the components is not limited by the terms. Where it is stated that a component is "connected," "combined," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but that another component may also be "connected," "combined," or "connected" between each component.

[0039] Components included in any one embodiment and components having common functions shall be described using the same names in other embodiments. Unless otherwise stated, the description in any one embodiment may also apply to other embodiments, and specific descriptions shall be omitted to the extent of overlap.

[0040]

[0041] The present invention relates to a floor structure using an EPDM elastic paving material for sports facilities with improved heat dissipation function and a method for constructing the same. The floor structure proposed in the embodiment of the present invention includes a multi-layer structure composed of an upper layer, a middle layer, and a lower layer, and each layer is designed to perform a specific function according to the purpose.

[0042] The upper layer consists of a mixture of EPDM (Ethylene Propylene Diene Monomer) rubber particles and a polyurethane binder, in which a heat dissipation additive complex is dispersed to prevent heat accumulation.

[0043] The aforementioned EPDM possesses excellent durability and elasticity and is one of the primary materials commonly used for flooring in sports facilities. Representative EPDM products include Dutral (ENI) and Keltan (Arlanxeo), which exhibit superior resistance to high temperatures and ultraviolet rays. The polyurethane binder provides appropriate flexibility and durability upon curing and serves to effectively bind the EPDM particles within the upper layer.

[0044] Common polyurethane binders include MDI (Methylene Diphenyl Diisocyanate)-based products and TDI (Toluene Diisocyanate)-based products, and in the present invention, an MDI-based binder may be preferred to maintain high weather resistance.

[0045]

[0046] One of the key elements of the present invention is a heat dispersion additive complex comprising one or more of photothermal conversion ceramic microparticles, thermally conductive inorganic particles, visible light-responsive photocatalytic materials, and dispersion stabilizers.

[0047] In this case, the photothermal conversion ceramic microparticles can perform the function of absorbing near-infrared (NIR) wavelengths that generate heat from sunlight and converting them into the visible light region.

[0048] The above photothermal conversion ceramic microparticles may include one or more selected from the group consisting of cerium oxide (CeO2), titanium oxide (TiO2), and iron oxide (Fe2O3). These have high photoactivity and can effectively convert heat transferred from sunlight to suppress the rise in surface temperature. If the amount of the above photothermal conversion ceramic microparticles is less than 30 weight%, there is a problem of reduced heat conversion effect, and if the amount exceeds 40 weight%, there is a problem of reduced mechanical strength.

[0049]

[0050] Thermally conductive inorganic particles can play a role in facilitating the movement of heat within the bottom structure to help maintain a uniform temperature distribution. The thermally conductive inorganic particles may include one or more selected from the group consisting of alumina (Al2O3), boron nitride (BN), and aluminum nitride (AlN). If the thermally conductive inorganic particles are included in an amount of less than 25 weight%, there is a problem that the heat dispersion effect is insufficient, and if they are included in an amount exceeding 35 weight%, there may be a problem that processability is reduced due to increased viscosity.

[0051] The visible light-responsive photocatalytic material is one of the important elements of the present invention and has a form in which ferrocene-derived iron oxide is deposited on an inorganic oxide. This structure is designed to have photoactivity in a wavelength range of 400 nm or more and reacts more effectively in the visible light region than titanium dioxide (TiO2), which is used as a general photocatalytic material. Through this, it can activate moisture on the surface to induce an evaporative cooling effect and can perform the function of lowering the surface temperature of the flooring material over the long term. If the above visible light-responsive photocatalytic material is included in an amount of less than 20 weight%, a problem of insufficient photoactivity may occur, and if it is included in an amount exceeding 30 weight%, a problem of excessive heat accumulation due to ultraviolet absorption may occur.

[0052] A dispersion stabilizer can help each additive to mix uniformly with the binder. The dispersion stabilizer may include one or more selected from the group consisting of polyacrylates, silicone-based compounds, and stearate-based compounds. It is preferable to include 5-10 weight percent of the dispersion stabilizer; if this weight percent range is exceeded, a problem may arise where uniform dispersion is not achieved.

[0053] In addition, an organic binder may be further included, and the organic binder may include one or more selected from the group consisting of polyurethane, epoxy, and silicone resin.

[0054]

[0055] The middle layer is a buffer layer with shock absorption and heat conduction functions, designed to effectively disperse external shocks while rapidly releasing heat downwards through multiple internally formed breathable channels.

[0056] The above-mentioned breathable channel has a pore structure with a diameter of 1 to 5 mm, and by facilitating internal airflow, it can maximize the thermal insulation effect and prevent the surface temperature from rising excessively.

[0057] In one embodiment, a shock-absorbing material may be introduced to complement the shock-absorbing function of the intermediate layer, and one or more of foamed polyurethane (Foamed PU) and styrene-butadiene rubber (SBR) chips may be used. These components each provide high elasticity and shock reduction effects. However, in the present invention, it may be preferable to apply foamed polyurethane considering long-term durability and elasticity.

[0058]

[0059] The sublayer serves as a base layer performing waterproofing and adhesive functions, and a special primer coating is applied to enhance adhesion to the construction site. The sublayer is designed to increase adhesion strength with the base surface while preventing moisture penetration, and for this purpose, it contains a waterproof polymer of a specific composition and microfillers. Polyurea or silicone resin may be used as the waterproof polymer, and silica (SiO2) or calcium carbonate (CaCO3) may be utilized as the microfiller.

[0060]

[0061] The construction method of the present invention proceeds in the order of first forming a lower layer, then laminating an intermediate layer, and finally applying an upper layer. The mixing of EPDM rubber particles and polyurethane binder in the upper layer is carried out on-site, at which time a heat dissipation additive complex is added in a ratio of 0.08 to 0.12 weight percent. This mixing method can be adjusted to achieve optimal performance depending on the construction environment, and after the construction of each layer is completed, surface thermal imaging analysis using a thermal imaging camera is performed to verify whether uniform curing has occurred. The multi-stage curing protocol of the present invention consists of initial curing, intermediate stabilization, and final curing stages, and if non-uniform curing is detected during the final curing stage, it can be corrected locally using an external heat source.

[0062]

[0063] According to another aspect of the present invention, a method for constructing a floor structure using an EPDM elastic paving material for sports facilities with enhanced heat dissipation function comprises the following steps. First, a heat dissipation additive complex is mixed on-site with EPDM rubber particles and a polyurethane binder. Subsequently, a lower layer having waterproofing and adhesive functions is constructed, an intermediate layer having shock absorption and heat conduction functions is constructed, and then an upper layer is constructed using the mixture.

[0064] In particular, during the on-site mixing stage, 80g to 120g of a heat dissipation additive complex is added based on a total weight of 100kg of EPDM rubber particles and binder, and the mixture is uniformly mixed for 5-10 minutes at a temperature above room temperature. This on-site mixing method can be customized to suit the environmental conditions of the construction site, thereby enabling optimal performance.

[0065] In addition, the construction method of the present invention includes a self-diagnostic curing step that secures an optimal curing time through surface thermal image analysis using a thermal imaging camera after the construction of each layer. This step consists of an initial curing step performed at room temperature for 4-6 hours according to a multi-stage curing protocol, an intermediate stabilization step performed at 30-40 degrees for 2-3 hours, and a final curing step performed at room temperature for 24-48 hours. If non-uniform curing is detected during the final curing step, it may include an additional step of promoting curing locally using an external heat source to ensure uniform quality.

[0066]

[0067] The floor structure for sports facilities according to the present invention is designed to effectively solve the heat accumulation problem of EPDM elastic paving materials while maintaining shock absorption and durability. In particular, the heat dispersion additive composite of the present invention provides a high heat reduction effect with a relatively small amount compared to conventional rubber flooring materials, thereby simultaneously improving economic efficiency and ease of construction. The technical configuration of the present invention can be applied in various environments and utilized for various purposes, such as indoor and outdoor sports facilities, sports fields, and playgrounds. Furthermore, as shown in the drawings, the floor structure of the present invention is designed so that the functional roles of each layer are harmonized, and consideration has been given to maintaining continuous heat reduction performance even after construction.

[0068]

[0069] <Example>

[0070] In an embodiment of the present invention, to test the effects of the EPDM elastic paving material of the present invention, the floor structure using the same, and the construction method thereof, an impact-absorbing flooring material was constructed using the EPDM elastic paving material of the present invention with enhanced heat dissipation function, and experiments were conducted indoors and on-site to evaluate the thermal imaging performance of the paving material.

[0071]

[0072] FIGS. 1 to 3 are data included in the test report for Example 1, which was tested indoors while comparing the embodiment and comparative example of the present invention. FIG. 1 is a schematic diagram showing the situation of the experiment conducted indoors, FIG. 2 is a thermal imaging camera image of samples measured indoors (comparative example (left) and embodiment (right)), and FIG. 3 is a table showing the maximum temperature measured according to the measurement time.

[0073] FIGS. 4 to 6 are data included in the test report for Example 2, which was tested outdoors while comparing the embodiment of the present invention with a comparative example. FIG. 4 is a photograph showing the situation of the outdoor test, FIG. 5 is a thermal imaging camera image of samples measured outdoors (comparative example (left) and embodiment (right)), and FIG. 6 is an image of samples introduced for temperature measurement.

[0074] Figure 7 is a graph showing indoor and field test surface temperatures measured in comparison between an embodiment of the present invention and a comparative example.

[0075] Figure 8 is the cover of a test report from the Korea Institute of Construction and Living Environment Testing, containing the data of Figures 1 to 7.

[0076] Below, the embodiments in which the test report results included in FIGS. 1 to 8 above were obtained will be described in detail.

[0077]

[0078] <Example 1: Indoor Thermal Imaging Test>

[0079] First, indoor thermal imaging tests were conducted on two types of shock-absorbing flooring materials. The test samples consisted of an unapplied product using existing technology and an applied product containing the heat dissipation additive of the present invention. The experiment was performed using an infrared irradiator (Jeil Precision Industrial Machinery Co., Ltd.) and a thermal imaging camera (FLIR, E30).

[0080]

[0081] For the experimental method, a sample of shock-absorbing flooring was placed under a light irradiator, and light was irradiated onto the surface from a distance of 320 mm using a PHILIPS infrared lamp (INFRARED BR125 250W). A thermal imaging camera was fixedly installed at a height of 800 mm and a distance of 750 mm from the specimen. Temperature was measured at 1-minute intervals from the start of irradiation up to 10 minutes, then at 5-minute intervals up to 30 minutes, and at 10-minute intervals up to 60 minutes. The maximum temperature was evaluated by analyzing the recorded thermal imaging data.

[0082]

[0083] As a result of the experiment, the product without the application reached a maximum surface temperature of 75.4 degrees after 30 minutes, whereas the product with the application of the present invention was measured at 69.2 degrees, confirming a temperature reduction effect of approximately 6.5 degrees. This is analyzed to be because the heat dissipation additive composite used in the present invention effectively reflects or converts heat generated by sunlight, thereby exhibiting an effect of suppressing the rise in surface temperature.

[0084]

[0085] <Example 2: Outdoor Thermal Imaging Test>

[0086] In this embodiment, a thermal imaging test was performed on the shock-absorbing flooring installed on-site. The experimental conditions were set to be the same as those for indoor experiments, except that the irradiation distance of the infrared lamp was adjusted to 350 mm. The test was conducted at the Olympic Park Foreon Apartment (playground in front of Building 317), 1300 Amsa-daero, Gangdong-gu, Seoul.

[0087]

[0088] The experimental method was the same as the indoor experiment, measuring the surface temperature at 1-minute intervals up to 10 minutes; thereafter at 5-minute intervals up to 30 minutes, and at 10-minute intervals up to 60 minutes. As a result of the experiment, the product without the application reached a maximum surface temperature of 47.9 degrees after 30 minutes, whereas the product with the application of the present invention recorded 40.1 degrees, confirming a temperature reduction effect of approximately 7.8 degrees.

[0089]

[0090] This shows a trend similar to indoor experiments, proving that the heat dissipation additive composite of the present invention effectively dissipates heat accumulated by sunlight even in outdoor environments.

[0091]

[0092] Flooring incorporating the EPDM elastic paving material with enhanced heat dissipation capabilities of the present invention provides a higher heat reduction effect compared to existing products, thereby reducing the risk of burns caused by rising floor temperatures in sports facilities and playgrounds during the summer. Furthermore, since the technology of the present invention provides the effect of improving thermal management performance while maintaining shock absorption and durability, it has the potential to be utilized in various environments.

[0093]

[0094] Although the embodiments have been described above with reference to the limited drawings, those skilled in the art can apply various technical modifications and variations based on the above. For example, suitable results may be achieved even if the described techniques are performed in a different order than described, and / or if the components of the described system, structure, device, circuit, etc. are combined or assembled in a form different from described, or replaced or substituted by other components or equivalents.

[0095] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below.

Claims

1. Includes a multilayer structure of upper layer, middle layer and lower layer, and The upper layer above is a matrix formed of a mixture of EPDM rubber particles and a polyurethane binder in which a heat-dispersing additive complex is dispersed, and The above intermediate layer is a buffer layer having shock absorption and heat conduction functions, and The above lower layer is a base layer having waterproof and adhesive functions, Floor structure using EPDM elastic paving material for sports facilities with enhanced heat dissipation function.

2. In Paragraph 1, The above heat dispersion additive complex Included in an amount of 0.08 to 0.12 weight% based on the total blending amount of the EPDM rubber particles and the polyurethane binder, Floor structure using EPDM elastic paving material for sports facilities with enhanced heat dissipation function.

3. In Paragraph 1, The above heat dispersion additive complex is, 30-40 wt% of photothermal conversion ceramic microparticles having heat reflection and near-infrared wavelength conversion functions; 25-35 wt% of thermally conductive inorganic particles; Visible light-responsive photocatalytic material 20-30 wt%; 5-10 wt% dispersion stabilizer; and The organic binder constituting the remaining matrix; comprising Floor structure using EPDM elastic paving material for sports facilities with enhanced heat dissipation function.

4. In Paragraph 3, The above visible light-responsive photocatalytic material is formed by depositing ferrocene-derived iron oxide on an inorganic oxide and has photoactivity in a wavelength range of 400 nm or more, and The above-mentioned photothermal conversion ceramic microparticles perform the function of absorbing near-infrared wavelengths that generate heat in sunlight and converting them into the visible light region. Floor structure using EPDM elastic paving material for sports facilities with enhanced heat dissipation function.

5. In Paragraph 1, The above intermediate layer includes breathable channels with a diameter of 1-5 mm and has heat release and moisture control functions, Floor structure using EPDM elastic paving material for sports facilities with enhanced heat dissipation function.

6. A method for constructing a floor structure using EPDM elastic paving material for sports facilities with improved heat dissipation function, A step of mixing on-site by adding a heat-dispersing additive complex to EPDM rubber particles and a polyurethane binder; Step of constructing a lower layer having waterproofing and adhesive functions; Step of constructing an intermediate layer having shock absorption and heat conduction functions; and A step of constructing an upper layer using the above mixture; comprising Construction method for floor structures using EPDM elastic paving material for sports facilities with enhanced heat dissipation function.

7. In Paragraph 6, The step of mixing at the above-mentioned site is, A method comprising adding 80g to 120g of a heat dispersive additive complex based on a total weight of 100kg of EPDM rubber particles and binder, and uniformly mixing for 5-10 minutes at a temperature above room temperature. Construction method for floor structures using EPDM elastic paving material for sports facilities with enhanced heat dissipation function.

8. In Paragraph 6, It further includes a self-diagnostic curing step that secures an optimal curing time through surface thermal image analysis using a thermal imaging camera after construction of each floor, and The above self-diagnosis curing step is, According to the multi-stage curing protocol An initial curing stage carried out at room temperature within 4 to 6 hours; An intermediate stabilization step performed at 30 to 40 degrees for 2 to 3 hours; and A final curing step carried out at room temperature for 24 to 48 hours; comprising, If non-uniform curing is detected in the final curing step described above, the method further includes a step of locally using an external heat source to promote curing. Construction method for floor structures using EPDM elastic paving material for sports facilities with enhanced heat dissipation function.

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