JP2557296B2 - Elastic pavement material and construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic pavement material and a construction method thereof. The elastic pavement material of the present invention is used not only as an outdoor pavement for road surfaces but also as an indoor floor material.

[0002]

2. Description of the Related Art Conventionally, a walking mat such as various sports facilities, parks, amusement parks, resort facilities, or exteriors of various buildings has a rubber mat or non-woven fabric formed of a vulcanized rubber powder into a predetermined shape using a binder. Layer mats are used.

As conventional techniques for molding vulcanized rubber powder into a predetermined shape with a binder, there are a pavement type that is constructed on site and a so-called interlock type that is preliminarily formed into a predetermined shape so that they fit together.

However, each of these conventional techniques has the following drawbacks.

That is, the on-site construction has a long construction period. B. It takes a long time to completely cure, and it is necessary to block traffic. There are drawbacks peculiar to on-site construction.

On the other hand, the interlock type is
(A) Since it is usually a stationary construction, it takes time and effort to level the construction site. B. Since it is originally intended for simple construction, one piece is a small tile that can be handled with one hand, so it takes time to align the lines in a certain pattern.

Further, the non-woven fabric single-layer mat becomes stiff with use and deteriorates in walking feeling. B, irregularities on the construction surface appear on the surface. C. It has drawbacks such as difficulty in absorbing water once absorbed.

[0008]

The terms used in the present invention will now be clarified. Usually, "pavement" means laying and hardening stones, asphalt, concrete, etc. on a road, but in the present invention, indoor floors, verandas of various buildings, exterior parts such as terraces, golf courses, walkways such as parks, etc. Interpret in a broad sense such as laying on. Further, in the art, the unevenness of the floor surface and the road surface is called "landlessness" (flick), and the present invention follows this.

The present inventors have studied the above-mentioned drawbacks of the prior art and have formulated a problem to be solved. The problem to be solved by the present invention is that the construction can be carried out easily and quickly on site,
In addition, after the construction, it is necessary to develop an elastic paving material that can maintain the same or better finish and physical properties than the conventional on-site construction type.

Another problem to be solved by the invention is to establish a method for constructing the elastic pavement material of the present invention simply and quickly.

[0011]

[Means for Solving the Problems] A means for solving the problems is to bond an elastic layer formed by molding a vulcanized rubber powder with a binder into a predetermined shape and a non-woven fabric of a predetermined thickness and preliminarily integrate them. is there.

The present inventors have taken into consideration the above-mentioned drawbacks and advantages of the prior art in the development process of the present invention.

Among the conventional techniques, the on-site construction type is so-called road pavement. Therefore, the troublesome work of treating the unevenness of the road surface in advance is not required. In this conventional technique, the most time-consuming work, which is affected by unstable factors such as weather and traffic, is a work of spreading vulcanized rubber powder on the surface of a ground such as asphalt and spreading and curing it.

On the other hand, the interlock type of the prior art is a simple laying construction, but it takes a long time to perform the work for treating the unevenness of the base.

Therefore, the surface of a certain type of base material is provided with a function of spreading and curing vulcanized rubber powder with a binder in advance and the base material itself having a function of adjusting the unevenness, and the two conventional techniques described above are used together. The pavement material of the present invention has both advantages.

The present invention thus achieved is vulcanized rubber powder.
An elastic layer in which the powder is cured into a predetermined shape with a binder, and
A non-woven fabric layer adhered to the paved surface side of the elastic layer.
It is an elastic pavement material that is integrated as a whole. Starting
The elastic layer of the bright elastic pavement material is vulcanized rubber powder cured with a binder. This is most effective in the water permeability effect and non-slip effect, which are becoming essential requirements for paving materials.
This is because it works effectively.

The binder used in the present invention is arbitrarily selected from urethane-based binders, polybutadiene-based binders and the like, but urethane-based binders are preferable in consideration of various physical properties such as durability, weather resistance and elasticity in terms of price. .

The non-woven fabric used in the present invention is mainly made of polypropylene, polyethylene, polyester, nylon and rayon, or a fiber obtained by mixing them, and is a fiber which is heat-melted at 100 to 170 ° C. It is manufactured by mixing. The thickness of the non-woven fabric can be selected arbitrarily, but considering the workability and cost, it is 3 to 15 m.
A range of m is preferred.

The paving material of the present invention is an elastic layer having a predetermined density and thickness, which is obtained by uniformly sprinkling a vulcanized rubber powder which has been kneaded with a binder in advance evenly on a release paper or an endless belt. The non-woven fabric is placed on one surface of the elastic layer, adhered, integrated and inverted to manufacture.

The pavement material of the present invention is manufactured in a long shape or in a predetermined shape.

The present invention further comprises vulcanized rubber powder in a vine.
Elastic layer cured into a predetermined shape with a der, one of the elastic layers
Non-woven fabric layer bonded to one side, and to the non-woven fabric layer
Elasticity consisting of a fixed layer
It is a paving material .

The material of the fixed layer used in the present invention is a material that supports a pavement material having a high flexibility, which is composed of an elastic layer and a non-woven fabric layer, and maintains the strength as a floor material or a pavement material, such as concrete, slate, or synthetic material. It is arbitrarily selected from a resin sheet, wood and the like.

The present invention provides a vulcanized rubber powder as a paving method.
An elastic layer in which the powder is cured into a predetermined shape with a binder, and
A non-woven fabric layer adhered to the paved surface side of the elastic layer.
Prepare an elastic pavement material that is integrated as a whole
And applying a petroleum resin adhesive to the paved surface,
Heat the paved surface coated with the resin adhesive at a specified temperature.
Melted petroleum resin adhesive, melted petroleum tree
Place the non-woven fabric layer surface of the elastic pavement material on the fat-based adhesive surface.
And the residual heat of the petroleum resin adhesive
More, by melting a part of the fibers constituting the non-woven fabric layer,
A shell consisting of welding a non-woven fabric layer with a petroleum resin adhesive
The method includes paving a pavement material on a surface to be paved. However,
The elastic pavement material of the present invention can be used even if it is placed directly on the surface to be paved.
It is not limited to the paving methods described above.
Not.

In the pavement material of the present invention, the asphalt road surface is heated to 100 to 150 ° C. with a burner or the like, and the petroleum resin adhesive is used to bond the pavement material with the nonwoven fabric layer facing downward. Furthermore, the fibers mixed in the non-woven fabric layer that heat-melt at 100 to 170 ° C. are melted by the heat from the asphalt and follow the unevenness of the road surface to cure at room temperature while absorbing the unevenness. Finished in the same manner as the construction type.

The pavement material of the present invention comprising an elastic layer, a non-woven fabric layer and a fixed layer is simply applied by laying it down or simply adhering it after treating the base with concrete, asphalt, sand or the like.

The present invention will be specifically described with reference to the following examples.

Example 1 1. Manufacture of elastic material (1) Preparation of vulcanized rubber powder Various used vulcanized rubber products such as used tires and weather strips are crushed with a roll or other crusher, and a magnetic separator and a specific gravity are used. After removing impurities such as metals and fibers by a suitable means such as a sorting machine, a vulcanized rubber powder having a predetermined size was produced through a screen having a predetermined mesh.

Spike resistance required for elastic pavement materials,
Considering various conditions such as non-slip property, water permeability, workability, and cost, it is preferable that the size of the vulcanized rubber powder used is distributed from large to small. That is,
A composition of 80 to 12 parts by weight having a size of 8 to 12 mesh and 100 parts by weight of 100 to 100 parts by weight of vulcanized rubber powder is preferable.

(2) Preparation of Binder As the binder, urethane type binder, which is appropriate in terms of physical properties and price, is used. Table 1 shows a blending example of the urethane-based binder.

[0029]

[Table 1]

Liquid resin such as isocyanate-terminated polybutadiene can be considered as a compounding example other than the above urethane binder.

(3) Manufacture of elastic material An elastic material is manufactured by kneading a compound containing 29 parts by weight of a binder per 100 parts by weight of vulcanized rubber powder of 8 to 32 mesh pass prepared by the method described above. did.

In this embodiment, 29 parts of the binder was added to 100 parts by weight of the vulcanized rubber powder to produce the elastic pavement material, but the binder is 5 to 40 parts by weight per 100 parts by weight of the vulcanized rubber powder. Can be added within the range.

(4) Preparation of Nonwoven Fabric On a spunbonded nonwoven fabric having a thickness of 1 mm and made of polyester fiber as a raw material, polyester is used as a main material fiber and 100
A non-woven fabric was prepared by stacking single fibers mixed with fibers that melt at 170 ° C. at a temperature of 10 ° C. and needle punching with a thickness of 10 mm and a basis weight of 1,000 g / m ² .

2. Manufacture of elastic pavement material: The elastic material manufactured in the above 1 is evenly spread on the endless belt having a width of 1200 mm by a predetermined basis weight, and pressure and heat are applied to form an elastic layer having a thickness of 10 mm. did.

Then, on the elastic layer, the above-mentioned 1, (4)
After the non-woven fabric prepared in step 1 was placed, it was heated and pressed to bond it to form a long elastic pavement material.

3, Adhesive Strength Test The adhesive strength of the elastic layer and the non-woven fabric layer of the elastic pavement material manufactured as described above was 4 kgf / cm ² when tested by a Kenken type adhesive strength tester.

[0037]

[Construction Example 1] A 50 mm-thick asphalt is placed on the ground of the walking path of a golf course, and a concave portion having a depth of 1 to 5 mm and a convex uneven portion having a height of 1 to 5 mm are formed on the asphalt surface. It was intentionally provided.

Then, the asphalt surface is burned with a burner 1
When the pavement material manufactured in Example 1 was placed after heating to 00 to 150 ° C., the heat-melted fiber woven in the nonwoven fabric was melted by the heat retained by the asphalt, and the shape of the uneven portion was formed. The pavement surface was finished smoothly because it was completely followed and cured.

[0039]

[Embodiment 2] The elastic pavement material manufactured in Embodiment 1 is set to 300 m.
It was cut into a size of m × 300 mm. After placing the cut pavement material on the bottom of the 302 mm × 302 mm formwork with the non-woven fabric layer facing upward, concrete is poured and pressure is applied from above the concrete layer with a press plate without applying vibration.
A pavement material consisting of three layers of an elastic layer, a non-woven fabric layer and a concrete fixing layer was manufactured by dehydrating from the lower part of the frame with a suction box equipped with a porous plate for vacuum suction, integrating and immediately releasing the mold.

[0040]

[Construction Example 2] After arranging and leveling the sand foundation of the children's play plaza in the children's park, the elastic pavement material manufactured in Example 2 was constructed by the laying method, and the joints between the pavement materials were sanded. It was filled and the construction was completed.

[0041]

EFFECTS OF THE INVENTION (a) The construction can be carried out easily and quickly without being affected by various conditions such as weather. (B) Since it has the function of adjusting the unevenness itself, troublesome incidental work such as unevenness adjustment work can be reduced. C. Since it can be manufactured in a predetermined shape and standard in advance, any design can be designed.

Claims (3)

(57) [Claims] 1. A Lee, bonded to vulcanized rubber powder elastic layer was cured into a predetermined shape with a binder and b, in the pavement surface side of the elastic layer, 100 to
An elastic pavement material that is integrally formed of a nonwoven fabric layer that is manufactured by mixing fibers that melt at 70 ° C. Wherein b, the elastic layer to cure the vulcanized rubber powder into a predetermined shape by a binder; b, bonded to one surface of the elastic layer, 100-17
Non-woven fabric layer produced by mixing fibers that melt at 0 ° C ;
And, c, elastic pavement material comprising integrated as a whole consists of three layers of adhesive fixation layer on the nonwoven fabric layer. 3. A vulcanized rubber powder in a predetermined shape with a binder
Elastic layer that has been hardened into a shape , and on the paved surface side of the elastic layer
Incorporating bonded fibers that melt at 100-170 ℃
It is composed of a non-woven fabric layer manufactured by
Prepare an elastic paving material consisting of : b, apply a petroleum resin adhesive to the surface to be paved ; c, pave the surface to which the petroleum resin adhesive is applied at a predetermined temperature
To melt the petroleum resin-based adhesive by heating at the temperature; d.
It places the nonwoven fabric layer surface; and Ho, residual heat the petroleum resin-based adhesive's, the
Melted portions of the fibers constituting the nonwoven fabric layer, a petroleum resin
An elastic pavement material consists of welding the adhesive and the nonwoven fabric layer
A method of paving the surface to be paved .