JP2022034287A - Manufacturing method of composite flat plate for pavement - Google Patents

Abstract

To provide a manufacturing method of composite flat plates for pavement which is comfortable to walk on and has high durability.SOLUTION: A manufacturing method of composite flat plates for pavement includes the steps of: providing convex parts at four positions equidistant from the center of the square on the diagonal line of the square on the surface of a composite flat plate; providing recesses at four positions equidistant from the center of the square on the diagonal of the square on the surface to be joined to the composite flat plate; applying a water-resistant adhesive to at least either a surface having the convex part of the composite flat plate or a surface having the concave part of the composite rubber flat plate, and laminating each convex part and each concave part to make them fit onto each other; and crimping the laminated composite flat plate and the composite rubber flat plate using a crimping frame having a certain width including four sides of a square.SELECTED DRAWING: Figure 2

Description

The present invention relates to a method for producing a water-permeable composite flat plate for pavement.

Conventionally, various paving blocks have been proposed. For example, the permeable pavement block disclosed in Patent Document 1 is a permeable pavement block obtained by kneading incinerated ash of incinerated residue in the form of particles or fragments obtained by heat-treating domestic waste such as raw garbage with a polyurethane resin binder. A block base material, a black chip having a size of about 3 mm obtained by crushing waste tires at a low temperature, and a surface rubber material obtained by mixing a gray chip of gray virgin rubber with a binder are put into a mold and pressed to form. It is water permeable and has two layers, a block base layer and a water permeable surface rubber layer.

Further, the permeable pavement composite material disclosed in Patent Document 2 is a pavement composite material composed of an upper layer material of a permeable rubber chip mat and a lower layer material of a permeable concrete block, and the lower layer material is inverted. It has a shape in which a square cone is cut right beside, and is characterized in that the vertical and horizontal lengths of the upper layer material in a plan view are somewhat longer than the vertical and horizontal lengths of the joint surface of the lower layer material.

Further, the pavement floor plate disclosed in Patent Document 3 includes a plate-like body having water permeability and elasticity, and one or a plurality of protrusions provided on the surface of the plate-like body, and is a first plate-like body. Includes a rigid second plate-like body joined to the back surface of the.

Japanese Patent Application No. 2001-317003 Utility Model Registration No. 3070124 Utility model registration No. 3006371

On sidewalks, cushion pavement materials have been proposed in order to reduce the impact when a pedestrian falls, but conventional general cushion pavement materials do not have sufficient cushioning properties or have cushioning properties. However, there was one with low durability. In order to realize a barrier-free society, pavement materials that are soft, safe, and highly durable are required to reduce injuries caused by falls on sidewalks.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method for manufacturing a pedestrian-friendly and highly durable composite flat plate for pavement.

(1) In order to achieve the above object, the present invention has taken the following measures. That is, the method for manufacturing a composite flat plate for paving according to the present invention is a method for manufacturing a composite flat plate for paving having water permeability, which is made of concrete and has water permeability and has a square two-dimensional shape. In the step of creating, a step of providing convex portions at four positions at equal distances from the center of the square on the diagonal line of the square on the surface of the composite flat plate, and a step of providing a two-dimensional shape by synthetic rubber. In the step of creating a composite rubber flat plate formed into a square congruent with the composite flat plate, at four positions equidistant from the center of the square on the diagonal line of the square on the surface to be joined to the composite flat plate. A water-resistant adhesive is applied to at least one of the step of providing the concave portion and the surface having the convex portion of the composite flat plate and the surface having the concave portion of the composite rubber flat plate, and each of the convex portions and the respective concave portions are fitted. Includes a step of laminating so as to fit, and a step of crimping the laminated composite flat plate and the composite rubber flat plate using a crimping frame having a certain width including the four sides of the square. It is characterized by that.

(2) Further, the method for manufacturing a composite flat plate for pavement of the present invention is characterized by further including a step of laminating a plurality of composite flat plates and curing them for a predetermined time after the step of crimping.

(3) Further, the method for manufacturing a composite flat plate for pavement of the present invention is characterized in that a protrusion or a slit for guiding a visually impaired person is provided on the surface of the rubber flat plate for pavement.

According to the present invention, it is possible to realize a pedestrian-friendly and highly durable composite flat plate for pavement.

It is a perspective view of the composite flat plate 1 for pavement which concerns on this embodiment. It is a flowchart which shows the manufacturing method of the composite flat plate for pavement which concerns on this embodiment. It is a top view of the composite flat plate which concerns on this embodiment. It is a side view of the composite flat plate which concerns on this embodiment. It is a figure which shows the aspect of the surface layer surface of the rubber flat plate 5 for composites. It is a figure which shows the aspect of the surface layer surface of the rubber flat plate 5 for composites. It is a figure which shows the aspect of the surface layer surface of the rubber flat plate 5 for composites. It is a figure which shows the state of crimping using a crimping frame 6. It is a figure which shows the state of stacking a plurality of composite flat plates for pavement, and performing crimp curing. It is a top view of the completed composite flat plate 1 for pavement. It is a side view of the completed composite flat plate 1 for pavement.

The present inventor pays attention to accurate positioning when laminating the composite flat plate and the composite rubber flat plate, and provides four convex portions on the surface of the composite flat plate and the back surface of the composite rubber flat plate. It has been found that the composite flat plate and the composite rubber flat plate can be accurately positioned and bonded to each other by providing the four recesses in the above, and the present invention has been made.

That is, the method for manufacturing a composite flat plate for paving according to the present invention is a method for manufacturing a composite flat plate for paving having water permeability, which is made of concrete and has water permeability and has a square two-dimensional shape. In the step of creating, a step of providing convex portions at four positions at equal distances from the center of the square on the diagonal line of the square on the surface of the composite flat plate, and a step of providing a two-dimensional shape by synthetic rubber. In the step of creating a composite rubber flat plate formed into a square congruent with the composite flat plate, at four positions equidistant from the center of the square on the diagonal line of the square on the surface to be joined to the composite flat plate. A water-resistant adhesive is applied to at least one of the step of providing the concave portion and the surface having the convex portion of the composite flat plate and the surface having the concave portion of the composite rubber flat plate, and each of the convex portions and the respective concave portions are fitted. Includes a step of laminating so as to fit, and a step of crimping the laminated composite flat plate and the composite rubber flat plate using a crimping frame having a certain width including the four sides of the square. It is characterized by that.

As a result, the present inventor has made it possible to realize a pedestrian-friendly and highly durable composite flat plate for pavement. Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

[Structure of composite flat plate for pavement]
FIG. 1 is a perspective view of a pavement composite flat plate 1 according to the present embodiment. The pavement composite flat plate 1 is made of concrete, has water permeability, and has a composite flat plate 3 having a square two-dimensional shape. The composite flat plate 3 is formed of water-permeable porous concrete, suppresses the generation of puddles in rainy weather, and exhibits a joint water-permeable function. The infiltrated water will contribute to the conservation of groundwater and urban greening. Further, a joint keeper 3d is provided on the side surface of the composite flat plate 3. Since this joint keeper 3d is provided, the construction joint can be passed through and beautiful construction can be performed. In addition, continuous toothing work with ordinary concrete flat plates and interlocking blocks is possible.

Further, the pavement composite flat plate 1 has a composite rubber flat plate 5 formed of synthetic rubber into a square having a two-dimensional shape congruent with the composite flat plate 3. That is, in the present embodiment, a virgin rubber color chip (EPDM) made of a highly elastic and high-density material having excellent durability can be used on the surface layer surface. This makes it possible to improve the walking feeling and passability of a person on the sidewalk. The composite rubber flat plate 5 can be colored in various colors in consideration of the landscape of the construction site and the like. Further, the composite flat plate 3 and the composite rubber flat plate 5 are bonded to each other by an adhesive 7.

[Manufacturing method of composite flat plate for pavement]
FIG. 2 is a flowchart showing a method of manufacturing a composite flat plate for pavement according to the present embodiment. Further, FIG. 3A is a plan view of the composite flat plate according to the present embodiment, and FIG. 3B is a side view of the composite flat plate according to the present embodiment. In FIG. 2, first, a water-permeable composite flat plate is prepared (step S1). Here, as shown in FIGS. 3A and 3B, the composite flat plate 3 according to the present embodiment is provided with a taper 3a on the four sides of a square, and a convex portion 3c is provided on the surface 3b. ing. That is, the convex portions 3c are provided at four positions equidistant from the center of the square on the diagonal line of the square on the surface 3b of the composite flat plate 3.

The following table shows the specifications of the water-permeable composite flat plate. The two-dimensional shape is a square having the same length and width, and in FIG. 2, "a = b = 300 (mm)". The thickness (h) is 50 (mm). The bending crack load is 6.25 (kN) or more, and the hydraulic conductivity is 1 × 10 ^-4 or more.

In addition, the following table shows "JIS A 5371: 2016 Precast Unreinforced Concrete Product Annex B (Specification) Pavement / Boundary Blocks Recommended Specifications B-1" Flat Plate "Compliant Standards".

The calculation of the bending crack load described above will be described. The bending crack load is obtained from the bending strength of concrete.
Bending crack load (F) = 2/3 x (b · d ² ) / L x σ
here,
F: Bending crack load (N)
b: Effective width of transparent horizontal plate (mm)
d: Thickness of flat plate (mm)
L: Span (mm)
σ: Bending strength of concrete (N / mm ² )
When the effective width of the transparent horizontal plate is 300 (mm), the bending crack load is obtained as follows.
Bending crack load (F) = ^2/3 x (300.502) / 240 x 3 = 6250 (N) = 6.25 (kN)

In addition, the following table is a recipe compounding table of the composite flat plate according to this embodiment.

Next, in FIG. 2, the rubber flat plate 5 for composite is created (step S2). Here, the synthetic rubber is used to create a composite rubber flat plate 5 having a two-dimensional shape formed into a square congruent with the composite flat plate 3. Then, recesses are provided at four positions equidistant from the center of the square on the diagonal line of the square on the surface to be joined to the composite flat plate 3. The following table shows the raw material physical property values of the composite rubber flat plate 5.

複合用ゴム平板５の成型方法は、「加熱・加圧プレス成型」であり、寸法は、「２９６（ｍｍ）×２９６（ｍｍ）」である（±１．５ｍｍ）。厚さは、１０（ｍｍ）であり（±１．０ｍｍ）、重量は、１．２０ｋｇ（±０．１５ｋｇ）である。

The molding method of the rubber flat plate 5 for composite is "heating / pressure press molding", and the dimensions are "296 (mm) x 296 (mm)" (± 1.5 mm). The thickness is 10 (mm) (± 1.0 mm) and the weight is 1.20 kg (± 0.15 kg).

4A to 4C show aspects of the surface layer surface of the composite rubber flat plate 5. FIG. 4A shows a composite rubber flat plate 5a which is generally used and has a striped pattern in which various colors are applied. FIG. 4B shows a composite rubber flat plate 5b used for guiding a visually impaired person, which is colored yellow and has protrusions indicating the meaning of a warning. FIG. 4C shows a composite rubber flat plate 5c used for guiding a visually impaired person, which is colored yellow and has a slit indicating the meaning of the guidance. On the back surface of the composite rubber flat plate 5a shown in FIG. 4A, recesses 4a are provided at four positions equidistant from the center of the square on the diagonal line of the square, and the recesses 4a are formed in the composite flat plate 3 Fits with the convex portion 3c of. Recesses 4b are also provided at four positions on the back surface of the composite rubber flat plate 5b shown in FIG. 4B, and recesses 4c are also provided at four positions on the back surface of the composite rubber flat plate 5c shown in FIG. 4C.

Next, in FIG. 2, the composite flat plate 3 and the composite rubber flat plate 5 are crimped (step S3). First, the adhesive surface is cleaned, and a water-resistant adhesive (for example, a water-resistant urethane resin bond) is applied to at least one of the surface having the convex portion 3c of the composite flat plate 3 and the surface having the concave portion of the composite rubber flat plate 5. Then, the convex portions 3c and the concave portions are bonded so as to fit into each other. The bonding waiting time is 15 to 20 minutes. Here, plate bonding and air bleeding are performed. The water-resistant adhesive used here (for example, a water-resistant urethane resin bond) has the physical property values shown in the table below.

Further, in the production of the composite flat plate according to the present embodiment, the standard amount (reference) of the adhesive used is as shown in the table below.

Then, as shown in FIG. 5A, the laminated flat plate 3 and the composite rubber flat plate 5 are crimped to each other by using a crimping frame 6 having a certain width including four sides of the square (step S3). .. The crimping frame 6 has a cushioning property. By using the crimping frame 6 in this way, the crimping density of the outer peripheral portion of the pavement composite flat plate according to the present embodiment is strengthened.

Next, in FIG. 2, the second crimping is performed (step S4). In the second crimping, as shown in FIG. 5B, a plurality of pavement composite flat plates are stacked and crimping is performed for 12 hours or more. The crimping load shall be a load of 30 (kg / sheet) or more. At this time, the excess adhesive that has squeezed out is removed. When the second crimping process is completed, the product is packed.

FIG. 6A is a plan view of the completed pavement composite flat plate 1, and FIG. 6B is a side view of the completed pavement composite flat plate 1. Since the pavement composite flat plate 1 includes a composite flat plate 3 formed of water-permeable porous concrete, it suppresses the generation of puddles in rainy weather and exhibits a joint water-permeable function. The infiltrated water will contribute to the conservation of groundwater and urban greening. Further, since the joint keeper 3d is provided on the side surface of the composite flat plate 3, the joints can pass through and beautiful construction can be performed. In addition, continuous toothing work with ordinary concrete flat plates and interlocking blocks is possible. Further, since the composite flat plate 1 for pavement uses a virgin rubber color chip (EPDM), which is a highly elastic and high-density material with excellent durability, on the surface layer surface, it is possible to improve the walking feeling and passability of people on the sidewalk. It will be possible.

1 ... Composite flat plate for pavement 3 ... Composite flat plate 3a ... Tapered 3b ... Surface 3c ... Convex portion 3d ... Joint keeper 4a, 4b, 4c ... Recessed portion 5 ... Composite rubber flat plate 5a ... Composite rubber flat plate 5b ... Composite rubber flat plate 5c ... Rubber flat plate for composite 6 ... Crimping frame 7 ... Adhesive

Claims (3)

A method for manufacturing a composite flat plate for pavement having water permeability.
In the process of creating a composite flat plate having water permeability in concrete and having a two-dimensional shape of a square, the composite flat plate is equidistant from the center of the square on the diagonal line of the square on the surface of the composite flat plate. The process of providing convex parts at one position and
In the step of creating a composite rubber flat plate having a two-dimensional shape formed into a square congruent with the composite flat plate by using synthetic rubber, the square is formed on the diagonal line of the square on the surface to be joined to the composite flat plate. The process of providing recesses at four positions equidistant from the center of
A water-resistant adhesive is applied to at least one of the surface having the convex portion of the composite flat plate and the surface having the concave portion of the composite rubber flat plate, and the convex portions and the concave portions are bonded together so as to fit. Process and
A pavement composite flat plate comprising a step of crimping the laminated composite flat plate and the composite rubber flat plate by using a crimping frame having a certain width including the four sides of the square. Manufacturing method. The method for manufacturing a composite flat plate for pavement according to claim 1, further comprising a step of laminating a plurality of composite flat plates and curing them for a predetermined time after the crimping step. The method for manufacturing a composite flat plate for pavement according to claim 1 or 2, wherein a protrusion or a slit for guiding a visually impaired person is provided on the surface of the rubber flat plate for composite.

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