JP2958343B1 - Pavement layer and method for forming the same - Google Patents

Abstract

An object of the present invention is to provide a pavement layer that is environmentally friendly, has excellent water permeability, does not allow water pools, and has excellent weather resistance, and has excellent practicality, and a method for forming the same. is there. SOLUTION: A resin layer 2 is provided on an upper surface of a wood fiber layer 1 formed by hardening wood fibers with a biodegradable binder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement layer which is environmentally friendly and has excellent weather resistance and a method for forming the same.

[0002]

2. Description of the Related Art Methods of treating wood-based waste generated by cutting, pruning, etc. of trees include a method of incineration as waste or a method of composting into fertilizer. General.

However, in the above-mentioned treatment method, the method of composting into fertilizer has a problem that the processing speed is slow because it takes a long time for wood-based waste material to become fertilizer.

Recently, incineration (open burning) at logging sites has been banned in principle, and a large amount of wood-based waste material that cannot be incinerated has been generated. This wood-based waste material has to be transported and disposed of as general waste. Have been forced to handle.

[0005] As a method for recycling such woody waste materials, a woody pavement method has been proposed.

However, the conventional wood paving method has the following disadvantages.

[0007] Pulverized wood-based waste materials are hardened with a synthetic resin binder, but these binders do not biodegrade and adversely affect the environment. In addition, when these binders are used, the wood pavement layer has poor water permeability.

Since the wood pavement layer has poor weather resistance, the surface of the wood pavement layer tends to be uneven in a short period of time.

The present invention solves the above problems,
Both wood fibers and binders are biodegradable, so they are environmentally friendly.
In addition, the present invention provides a pavement layer which is excellent in water permeability, cannot form water pools and the like, and has excellent weather resistance and excellent practicality, and a method for forming the same.

[0010]

The gist of the present invention will be described with reference to the accompanying drawings.

The present invention relates to a pavement layer characterized in that a resin layer 2 is provided on an upper surface of a wood fiber layer 1 formed by hardening wood fibers with a biodegradable binder.

A step of solidifying the wood fiber with a biodegradable binder to form the wood fiber layer 1;
Forming a resin layer 2 by applying a resin to the upper surface of the pavement layer.

[0013] Further, the present invention relates to a method for forming a pavement layer according to the second aspect, wherein a plant-based binder is used as the binder.

Further, in the method for forming a pavement layer according to any one of claims 2 and 3, a method for forming a pavement layer is characterized in that calcium hydroxide is mixed into a binder to increase the solidification rate. It is.

[0015] Further, in the method for forming a pavement layer according to any one of claims 2 to 4, a method for forming a pavement layer, comprising using wood waste generated at a construction site as wood fiber. It is.

Further, the present invention relates to the method for forming a pavement layer according to any one of claims 2 to 5, wherein a room-temperature-curable resin is used as the resin.

[0017]

Since the wood fibers and the binder constituting the wood fiber layer 1 are biodegraded, the wood fiber layer 1 is more environmentally friendly, and the wood fiber layer 1 is more water-permeable than common pavement materials such as asphalt. Excellent, can't puddle.

Since the resin layer 2 is provided on the upper surface of the wood fiber layer 1, the upper part of the wood fiber layer 1 (the surface of the pavement layer) has excellent weather resistance.

Since the present invention is constructed as described above, both the wood fibers and the binder are biodegraded, so that it is environmentally friendly, has excellent water permeability, cannot form water pools, and has excellent weather resistance. It becomes a pavement layer excellent in practicality and a method for forming the same.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment of the present invention and will be described below.

In this embodiment, a resin layer 2 is formed on the upper surface of a wood fiber layer 1 formed by hardening wood fibers with a biodegradable binder.
Is provided.

As the wood fibers, small wood fibers (wood chips) or fibrous wood fibers (wood fibers) obtained by pulverizing a wood-based waste material generated at a construction site or the like with a pulverizer are used.

As the biodegradable binder, a plant-based adhesive is used. As the plant-based adhesive, it is extremely low cost to use konjak flour as a main component, which is generated in large quantities during konjak milling. However, some are used for livestock feed, but most are currently disposed of.)

As the resin forming the resin layer 2, a synthetic polymer agent (such as an epoxy resin agent) that cures at room temperature is used.
This resin is selected so that the resin layer 2 can maintain a constant surface layer state in any weather (weather conditions such as rainfall, high temperature, low temperature, etc.), that is, a resin having good weather resistance.

Hereinafter, the formation method of this embodiment will be described in detail. FIG. 1 shows a flowchart of the forming method.

The wood-based waste material is pulverized by a pulverizer into small pieces of wood fiber or fibrous wood fiber. In addition, the woody waste material generated at the construction site where the pavement layer is formed can be used by being crushed as it is.

Subsequently, konjac flour is mixed with the wood fiber as a plant-based adhesive. Water (or hot water) is also mixed. At this time, calcium hydroxide (Ca (O
The addition of H) ₂ ) can increase the solidification rate of the wood fiber. In addition, this mixing process can be easily performed even at a construction site. Further, sand or the like may be mixed in order to enhance the adhesive action of the binder.

Subsequently, the mixture is leveled in a pavement excavation section provided on the ground, left to stand for a predetermined time and solidified to form a wood fiber layer 1 (solidification time is usually 4 to 5 days, water It takes about one day when calcium oxide is added.)

Subsequently, the upper surface (surface layer) of the wood fiber layer 1 is coated with a synthetic polymer such as an epoxy resin and cured to form a resin layer 2. At this time, since the synthetic polymer is curable at room temperature, no special curing step is required.

The pavement layer formed by such a process has the following characteristics.

Unlike a pavement layer formed by a conventional wood pavement method, a biodegradable binder is used as a binder for solidifying the wood fibers, so that both the wood fibers and the binder are biodegraded and returned to the soil, and the environment is reduced. It will be kind.

The plant-based pressure-sensitive adhesive (konjak flying powder) used as a binder is particularly excellent in elasticity as compared with a conventionally used binder, so that it is more excellent in cushioning properties and is used in a footpath (field). ) And so on.

Since the konjac flour used as the binder as well as the wood fiber is originally disposed of, the raw material cost is extremely low and the pavement layer can be formed at an extremely low cost.

The water permeability of the wood fiber layer 1 is high, and water pools and the like do not occur.

Since the resin layer 2 is provided on the upper surface of the wood fiber layer 1, it has excellent weather resistance.

Since the wood fiber layer 1 is protected by the resin layer 2, the scattering of wood fibers shaved by walking or the like, which is a problem in the conventional wood pavement method, is suppressed.

The work of forming the pavement layer can be easily performed at the construction site, so that the workability is facilitated.

Further, this embodiment cannot withstand the traffic load of a car, and is suitable for parks and forests, a pavement for golf,
It is used for bicycle roads, pavement roads in schools, and pavement surfaces in exercise squares.

Since the present embodiment is constructed as described above, it is a pavement layer which is environmentally friendly, has excellent water permeability and is excellent in weather resistance and is extremely practical and a method for forming the same.

Hereinafter, experimental results for confirming the operation and effect of this embodiment will be described in detail.

Table 1 below shows the respective component ratios used in the experimental examples. The thickness of the wood fiber layer 1 is 3 to 5 cm, and the application amount of the top coat (resin layer 2) is 1.5 to 2.0 kg /.
m ² (about several mm or less in thickness). The resin forming the resin layer 2 was an epoxy resin.

[Table 1] Each of the experimental examples described above had the above characteristics, and was good as a pavement layer.

[Brief description of the drawings]

FIG. 1 is a flowchart of a forming method according to the present embodiment.

FIG. 2 is an explanatory partial cross-sectional perspective view of the present embodiment.

[Explanation of symbols]

 1 wood fiber layer 2 resin layer

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-242006 (JP, A) JP-A-2-236302 (JP, A) Patent 2639398 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E01C 7/30 E01C 5/14

Claims (6)

(57) [Claims] 1. A pavement layer characterized in that a resin layer is provided on an upper surface of a wood fiber layer formed by hardening wood fibers with a biodegradable binder. 2. A process for solidifying a wood fiber with a biodegradable binder to form a wood fiber layer, and applying a resin to the upper surface of the wood fiber layer to form a resin layer. Method of forming a pavement layer. 3. The method for forming a pavement layer according to claim 2, wherein a plant-based binder is used as the binder. 4. The method for forming a pavement layer according to claim 2, wherein a solidification rate is increased by mixing calcium hydroxide into a binder. 5. The method for forming a pavement layer according to claim 2, wherein a woody waste material generated at a construction site is used as the wood fiber. 6. The method for forming a pavement layer according to claim 2, wherein a room temperature curable resin is used as the resin.