Method for attaching tactile tiles and pavement structures

Abstract

This invention provides a method for firmly adhering tactile paving tiles made of synthetic resin to a rubber road surface. [Solution] The method of the present invention includes the steps of: degreasing and cleaning a rubber road surface 2; applying a primer to the degreasing and cleaning rubber road surface 2 to form a primer layer 4; applying a liquid epoxy resin to the upper surface of the primer layer 4 to form an epoxy resin layer 6; and bonding a tactile tile 10 made of synthetic resin to the upper surface of the epoxy resin layer 6 via an adhesive 8.

Description

【Technical Field】 【0001】 The present invention relates to a method for adhering a Braille tile made of synthetic resin to a rubber pavement, and a paving structure in which a Braille tile made of synthetic resin is adhered to a rubber pavement. 【Background Art】 【0002】 Braille tiles are laid on paving structures with road surfaces paved with asphalt or concrete in order to warn visually impaired people of the possibility of danger ahead or to guide the walking direction. Braille tiles are formed in a sheet shape from, for example, a synthetic resin material and are firmly adhered to the paving structure with an adhesive (see, for example, Patent Document 1). 【Prior Art Documents】 【Patent Documents】 【0003】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2005-105811 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0004】 Braille tiles may be laid not only on paving structures with road surfaces paved with asphalt or concrete but also on paving structures having a rubber pavement. Examples of paving structures having a rubber pavement include paving structures laid at railroad crossings. This paving structure has a rubber pavement in order to reduce vibration and noise. In addition, the rubber pavement has the advantage that it can be detached in a short time. 【0005】 However, when a Braille tile made of synthetic resin is adhered to a rubber pavement with an adhesive, there is a problem that the Braille tile and the rubber pavement are not firmly adhered and the Braille tile is easily peeled off from the rubber pavement. 【0006】 The object of the present invention is to provide a method for firmly adhering synthetic resin braille tiles to a rubber road surface, and a pavement structure in which synthetic resin braille tiles are firmly adhering to a rubber road surface. [Means for solving the problem] 【0007】 According to the present invention, the following method for adhering braille tiles is provided that solves the above problems. That is, A method for adhering tactile tiles made of synthetic resin to a rubber road surface, The process of degreasing and cleaning the aforementioned rubber road surface, The process involves applying a primer to the degreased and cleaned rubber road surface to form a primer layer, The steps include applying a liquid epoxy resin to the upper surface of the primer layer to form an epoxy resin layer, A method is provided which includes the step of bonding the braille tile to the upper surface of the epoxy resin layer via an adhesive. 【0008】 Preferably, the primer contains an ethylene vinyl acetate copolymer as its main component. It is desirable that the adhesive and the braille tiles contain the same synthetic resin as their main component. The synthetic resin is preferably an acrylic resin. It is advantageous that the synthetic resin is a methyl methacrylate resin. The rubber road surface has recesses formed in it, and it is preferable to fill the recesses with the epoxy resin layer. The rubber road surface is, for example, used for railway crossings. 【0009】 Furthermore, the present invention provides the following pavement structure that solves the above problems. That is, "A pavement structure in which tactile tiles made of synthetic resin are adhered to a rubber road surface, A primer layer formed on the degreased and cleaned rubber road surface, An epoxy resin layer formed on the upper surface of the primer layer, A pavement structure is provided, comprising: the tactile tile bonded to the upper surface of the epoxy resin layer via an adhesive. [Effects of the Invention] 【0010】 In the method of the present invention, a primer layer is formed on the degreased and cleaned rubber road surface, an epoxy resin layer is formed on the upper surface of the primer layer, and a tactile tile made of synthetic resin is bonded to the upper surface of the epoxy resin layer via an adhesive. This allows the tactile tile to be firmly bonded to the rubber road surface. Therefore, the problem of tactile tiles easily peeling off the rubber road surface is resolved. 【0011】 Furthermore, the pavement structure of the present invention comprises a primer layer formed on the upper surface of a degreased and cleaned rubber road surface, an epoxy resin layer formed on the upper surface of the primer layer, and a tactile tile made of synthetic resin bonded to the upper surface of the epoxy resin layer via an adhesive. As a result, the tactile tile is firmly bonded to the rubber road surface. Therefore, the problem of the tactile tile easily peeling off the rubber road surface is resolved. [Brief explanation of the drawing] 【0012】 [Figure 1] Schematic diagram of a rubber road surface cross-section. [Figure 2] A schematic cross-sectional view of a rubber road surface with a primer layer formed on it. [Figure 3] A schematic cross-sectional view of a rubber road surface in which an epoxy resin layer is formed on the upper surface of the primer layer. [Figure 4] A schematic cross-sectional view of a rubber road surface in which tactile paving tiles are bonded to the upper surface of an epoxy resin layer via adhesive. [Modes for carrying out the invention] 【0013】 The braille tile bonding method and pavement structure according to the present invention will be described below with reference to the drawings. 【0014】 (Degreasing and cleaning process) In the method for adhering Braille tiles according to this embodiment, first, a step of degreasing and cleaning the rubber pavement is performed. Specifically, the rubber pavement is degreased and cleaned using a cloth impregnated with a degreasing cleaner such as acetone or alcohol and cleaning tools such as a brush. Dirt adheres to the laid rubber pavement due to walking, wind, rain, etc. Also, even if the rubber pavement is new, there may be a release agent or the like remaining when the rubber pavement was molded. If foreign substances such as dirt and release agent are present on the rubber pavement, it may have an adverse effect on the adhesiveness of the rubber pavement. Therefore, the rubber pavement is degreased and cleaned to remove foreign substances. 【0015】 FIG. 1 shows an example of the rubber pavement 2 to be degreased and cleaned in this step. The rubber pavement 2 can be formed from an appropriate synthetic rubber material such as styrene-butadiene rubber (SBR). Such a rubber pavement 2 can be laid at a railroad crossing. Specifically, it can be laid inside the width direction (between the rails) or outside the width direction (outside the rails) of a pair of rails. 【0016】 A plurality of recesses 2a for anti-slip are formed in the rubber pavement 2 of this embodiment. The shape of the recess 2a can be arbitrarily set. For example, it may be a square cross-sectional shape extending in a direction perpendicular to the paper surface at intervals in the left-right direction in FIG. 1. The dimensions of the recess 2a are, for example, about 3 mm to 7 mm in width and about 3 mm to 7 mm in depth. When degreasing and cleaning the inside of such a recess 2a, it is preferable to use a brush to thoroughly degrease and clean the inside of the recess 2a. Note that the rubber pavement to be degreased and cleaned in this step is not limited to one with recesses formed, and it may also be one without recesses. 【0017】 (Step of forming a primer layer) After degreasing and cleaning the rubber pavement 2, a step of applying a primer to the degreased and cleaned rubber pavement 2 to form a primer layer is carried out. Examples of the primer used in this step include those obtained by diluting an ethylene vinyl acetate copolymer (main component) with an appropriate organic solvent and those obtained by diluting a polyurethane (main component) with an appropriate organic solvent. The applicator for applying the primer may be a roller, a brush, a spray gun, etc. Using such an applicator, a primer is applied to the degreased and cleaned rubber pavement 2. Then, the applied primer is dried to form a primer layer 4 on the degreased and cleaned rubber pavement 2 as shown in FIG. 2. The film thickness of the primer layer 4 is about several μm to several tens of μm. 【0018】 (Step of forming an epoxy resin layer) After forming a primer layer 4 on the degreased and cleaned rubber pavement 2, a step of applying a liquid epoxy resin to the upper surface of the primer layer 4 to form an epoxy resin layer is carried out. In this step, an applicator such as a spatula or a palette knife is used to apply a liquid epoxy resin to the upper surface of the primer layer 4. Then, the applied epoxy resin is cured to form an epoxy resin layer 6 on the upper surface of the primer layer 4 (see FIG. 3). When the recess 2a is formed in the rubber pavement 2 as in this embodiment, it is preferable to fill the recess 2a with the epoxy resin layer 6. It should be noted that the liquid epoxy resin used in this step is preferably selected to have an appropriate curing time according to various construction conditions such as the construction time and the temperature. 【0019】 (Step of adhering the braille tiles) After forming an epoxy resin layer 6 on the upper surface of the primer layer 4, a step of adhering a synthetic resin braille tile via an adhesive to the upper surface of the epoxy resin layer 6 is carried out. In this step, an applicator such as a spatula or a palette knife is used to apply an adhesive 8 to the upper surface of the epoxy resin layer 6, and then the braille tile 10 is adhered to the upper surface of the epoxy resin layer 6 via the applied adhesive 8 (see FIG. 4). The protrusions 10a formed on the upper surface of the braille tile 10 are linear protrusions or dot-like protrusions for walking or dot-like protrusions for warning. 【0020】 It is desirable that the adhesive and braille tiles used in this process contain the same synthetic resin as their main component. When the adhesive and braille tiles contain the same synthetic resin as their main component, the adhesive and braille tiles melt together, resulting in a strong bond between them. The synthetic resin contained as the main component in the adhesive and braille tiles is preferably an acrylic resin, and methyl methacrylate resin is particularly advantageous. In addition to the above-mentioned synthetic resin as the main component, the adhesive contains aggregates, hardeners, etc. The braille tiles, in addition to the above-mentioned synthetic resin as the main component, contain aggregates, fillers, colorants (e.g., pigments, dyes), etc. 【0021】 As described above, in the braille tile bonding method of this embodiment, a primer layer 4 is formed on the degreased and cleaned rubber road surface 2, an epoxy resin layer 6 is formed on the upper surface of the primer layer 4, and the braille tile 10 made of synthetic resin is bonded to the upper surface of the epoxy resin layer 6 via an adhesive 8. Therefore, the braille tile 10 can be firmly bonded to the rubber road surface. Consequently, the problem of the braille tile 10 easily peeling off the rubber road surface 2 is resolved. 【0022】 In this embodiment, the rubber road surface 2 has recesses 2a formed therein, and these recesses 2a are filled with an epoxy resin layer 6. Therefore, even if a force is applied to peel the tactile tiles 10 from the rubber road surface 2 in the direction indicated by arrow A in Figure 4, the hardened epoxy resin layer 6 catches on the recesses 2a, thus suppressing the peeling of the tactile tiles 10 from the rubber road surface 2. 【0023】 Furthermore, as described above, the pavement structure in which the synthetic resin braille tiles 10 are bonded to the rubber road surface 2 comprises, as shown in Figure 4, a primer layer 4 formed on the degreased and cleaned rubber road surface 2, an epoxy resin layer 6 formed on the upper surface of the primer layer 4, and braille tiles 10 bonded to the upper surface of the epoxy resin layer 6 via an adhesive 8, so that the braille tiles 10 are firmly bonded to the rubber road surface 2. Therefore, the pavement structure of this embodiment solves the problem of the braille tiles 10 easily peeling off from the rubber road surface 2. 【0024】 Here, we will describe the tests conducted by the inventors to confirm the effectiveness of the braille tile adhesion method and pavement structure according to the present invention. 【0025】 (Test 1) The inventors formed an adhesive layer with a predetermined test area on a rubber road surface using the sample shown below, and measured the adhesive strength between the rubber road surface and the adhesive layer using a Building Research Institute adhesive strength tester (manufactured by Sanko Techno Co., Ltd., model "Techno Tester R-10000ND"). Since the adhesive strength between the synthetic resin braille tiles and the adhesive layer is strong enough for practical use, in Test 1, the adhesive strength between the rubber road surface and the adhesive layer was measured without attaching the synthetic resin braille tiles to the adhesive layer. Rubber road surface: Kiyota Railway Industry Co., Ltd., product name "KG-type elastic structure level crossing" Primer: SomeQ Technology Co., Ltd., product name "Mitchakron Multi" Epoxy resin: Konishi Corporation, product name "Bond Quick Mender" Adhesive: An adhesive containing methyl methacrylate resin as its main component. Test area: 40mm x 40mm 【0026】 (Comparative example 1 of Test 1: Rubber road surface + adhesive layer) After degreasing and cleaning the rubber road surface, an adhesive layer was applied to form an adhesive layer. Then, the attachment of the Building Research Institute-type adhesive strength tester was bonded to the exposed surface of the hardened adhesive layer. The bonding area between the attachment and the adhesive layer was the same as the test area described above, and this was also the case in Comparative Examples 2-3 and the Example described below. The adhesive strength between the rubber road surface and the adhesive layer was then measured to be 0.4 N / mm². 2 The adhesive layer peeled off at the interface between the rubber road surface and the adhesive layer. 【0027】 (Comparative example 2 of Test 1: Rubber road surface + primer layer + adhesive layer) A primer layer was applied to a degreased and cleaned rubber road surface. Then, an adhesive layer was applied to the top surface of the primer layer to form an adhesive layer. After the adhesive layer hardened, an attachment of a building research institute adhesive strength tester was bonded to the exposed surface of the adhesive layer. The adhesive strength between the rubber road surface and the adhesive layer was then measured and found to be 0.4 N / mm². 2 This caused damage within the adhesive layer. 【0028】 (Comparative example 3 of Test 1: Rubber road surface + epoxy resin layer + adhesive layer) Liquid epoxy resin was applied to a degreased and cleaned rubber road surface to form an epoxy resin layer. Then, adhesive was applied to the top surface of the hardened epoxy resin layer to form an adhesive layer. After that, an attachment of a building research institute adhesive strength tester was bonded to the exposed surface of the hardened adhesive layer. The adhesive strength between the rubber road surface and the adhesive layer was then measured and found to be 0.8 N / mm². 2 As a result, the epoxy resin layer and adhesive layer peeled off from the interface between the rubber road surface and the epoxy resin layer. 【0029】 (Example of Test 1: Rubber road surface + primer layer + epoxy resin layer + adhesive layer) A primer layer was applied to a degreased and cleaned rubber road surface. Next, a liquid epoxy resin layer was applied to the top surface of the primer layer to form an epoxy resin layer. Then, an adhesive layer was applied to the top surface of the cured epoxy resin layer to form an adhesive layer. Finally, an attachment of a building research institute adhesive strength tester was bonded to the exposed surface of the cured adhesive layer. The adhesive strength between the rubber road surface and the adhesive layer was then measured and found to be 1.4 N / mm². 2 The attachment detached from the adhesive layer. Therefore, the adhesive strength between the rubber road surface and the adhesive layer could not be measured, but it was at least 1.4 N / mm². 2 It was confirmed that it exceeded [a certain value]. Therefore, the embodiment of the present invention has greater adhesive strength than any of the comparative examples 1 to 3 above. 【0030】 (Exam 2) The inventors conducted vibration tests (Type 3) as specified in JIS E3014 "Railway signaling safety components - Vibration test methods" using the sample shown below. Specifically, a primer layer was formed by applying a primer to a degreased and cleaned rubber road surface, then an epoxy resin layer was formed by applying a liquid epoxy resin to the upper surface of the primer layer, and then a tactile paving tile made of synthetic resin was bonded to the upper surface of the hardened epoxy resin layer via an adhesive. The above vibration tests were then performed on these samples. After the tests, it was confirmed that the tactile paving tile had not peeled off from the rubber road surface. Rubber road surface: Railway Track Materials Industry Co., Ltd., product name "TK-type plastic sheet level crossing" Primer: SomeQ Technology Co., Ltd., product name "Mitchakron Multi" Epoxy resin: Konishi Corporation, product name "Bond Quick Mender" Adhesive: An adhesive containing methyl methacrylate resin as its main component. Braille tiles: Braille tiles containing methyl methacrylate resin as the main component. [Explanation of Symbols] 【0031】 2: Rubber surface 2a: Recess 4: Primer layer 6: Epoxy resin layer 8: Adhesive 10: Braille tiles 10a: Protrusion

Claims

[Claim 1] A method for adhering tactile tiles made of synthetic resin to a rubber road surface, The process of degreasing and cleaning the aforementioned rubber road surface, The process involves applying a primer to the degreased and cleaned rubber road surface to form a primer layer, The steps include applying a liquid epoxy resin to the upper surface of the primer layer to form an epoxy resin layer, A method comprising the step of bonding the braille tile to the upper surface of the epoxy resin layer via an adhesive. [Claim 2] The method according to claim 1, wherein the primer mainly contains an ethylene vinyl acetate copolymer. [Claim 3] The method according to claim 1, wherein the adhesive and the braille tile contain the same synthetic resin as a main component. [Claim 4] The method according to claim 3, wherein the synthetic resin is an acrylic resin. [Claim 5] The method according to claim 4, wherein the synthetic resin is a methyl methacrylate resin. [Claim 6] The method according to claim 1, wherein a recess is formed in the rubber road surface, and the recess is filled with the epoxy resin layer. [Claim 7] The method according to claim 1, wherein the rubber road surface is for use at railway crossings. [Claim 8] A pavement structure in which tactile tiles made of synthetic resin are adhered to a rubber road surface, A primer layer formed on the degreased and cleaned rubber road surface, An epoxy resin layer formed on the upper surface of the primer layer, A pavement structure comprising: the braille tile bonded to the upper surface of the epoxy resin layer via an adhesive.

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