JP2003025485A - Woody composite structure material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a woody composite structure material having a light weight and a high strength by incorporating durability of at least 30 years or more in the case of installing a natural timber outdoors. SOLUTION: The woody composite structure material comprises the natural timber as a core, a coating material made of a cement mortar or a concrete having a waterproofness and a corrosion resistance as well as a weather resistance and coating molding a circumference of the timber and finishing the coating material in a required shape, and a fastening means provided at the core material to fix the coating material to each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses cedar, cypress, and other natural wood as a core material, and the surrounding area is covered and molded with a covering material made of cement mortar or concrete having waterproofness, corrosion resistance and weather resistance. The obtained wood-based composite structural material is related.

[0002]

2. Description of the Related Art Wood such as cedar logs is widely used as a structural material for utility poles, cross girders, wood girder bridges and the like. When wood is used outdoors and exposed to the elements, it will corrode prematurely.
Therefore, when wood such as cedar logs is used outdoors as a structural material, a special antiseptic treatment is applied.

As a conventional preservative treatment, for example, creosote oil and an oily wood preservative such as tar pitches are directly applied to or dyed on the surface of wood in accordance with Japanese Industrial Standard (JIS) K2439, and absorbed and impregnated. there were. Also, as specified in JIS K1570, phenols, inorganic fluoride-based wood preservatives, chromium / copper / arsenic compound-based wood preservatives, alkylammonium compound-based wood preservatives, chromium / copper / zinc compound-based wood A chemical solution comprising a water-soluble wood preservative such as a preservative, a copper / alkylammonium compound-based wood preservative, and a fatty acid metal chlorine-based wood preservative has also been pressure-injected into the wood by JISA9002. Furthermore, it is also practiced to coat the wood surface with a water-soluble emulsion paint kneaded with a wood preservative, and to protect the wood surface with the coating film.

However, these preservative-treated wood-based structural materials have a relatively short service life of 10 to 20 years, whichever treatment is performed. For this reason, there are many restrictions on the use and the place of use as a structural material.

Further, the service life is greatly influenced by the quality of wood and the use conditions, and it is difficult to guarantee the quality, so that the places to be used have to be restricted in the end.

Further, since the appearance is emphasized, the cost required for the appearance processing of the wood becomes large, and the stored chemical liquid injected under pressure flows out to the outside, so that there is always a possibility of environmental pollution. Since wood preservatives such as heavy metals are included, there remains a problem in the final disposal method of the wood, and processing equipment costs such as pressure injection equipment and external lumber equipment are large overall, so preservative processing materials are 6-10 There was a problem that the cost was about doubled.

[0007]

As described above, the conventional wood-based structural materials are natural wood and are pollution-free, and despite their high strength and luxury supply, their antiseptic treatment is not possible. There is a problem that it becomes a neck, and the places of use as outdoor structures are largely limited.

Further, since the conventional wood-based structural materials are used as they are after being subjected to antiseptic treatment, poisonous gas is generated when they are burned, and there is a risk that heavy metals will be eluted if they are landfilled. There was a problem that it was not established.

Therefore, according to the present invention, the antiseptic treatment of wood can be eliminated or facilitated, the useful life can be extended to at least 30 years, and the final disposal method can be facilitated. In addition, the external shape can be arbitrarily shaped. It is an object of the present invention to provide a wood-based composite structural material that can be used and has improved versatility.

[0010]

In order to solve the above problems, the present invention comprises a wood-based composite structural material as set forth in the claims.

That is, the wood-based composite structural material of the present invention uses natural wood as a core material, and the surrounding area is covered and molded with a covering material made of cement mortar or concrete having waterproofness, corrosion resistance and weather resistance, and a required shape. The core material is provided with fixing means for fixing the covering materials to each other.

As the core material, various natural woods such as cedar, cypress, pine, kunugi, oak, fir and beech can be used alone or in combination. In general, material logs that have been removed from the branches and brought into the market are peeled by applying a machine such as a water jet or a rotating roller, and a fixing means is provided for this to put them in a concrete formwork, such as columnar shape, square shape, box shape, etc. Finish into any shape. Although lumber products may be used, the cost increases when timber is used. Therefore, if possible, use raw materials without sawing. It is preferable that the surface of the wood be somewhat roughened because it also serves as a slip stopper for the covering material.

The core material is not limited to one log,
A bundle of a plurality of logs or timber can be used. However, it is necessary that the timbers are tied together firmly by using tightening fasteners such as through bolts and metal bands. The timbers can be joined together by connecting a plurality of timbers in the vertical direction.

The core material is provided with fixing means for closely fixing the coating materials to each other. The fixing means is provided for firmly adhering or adhering the wood and the covering material, and is performed by insizing by a V-cut groove or the like, nailing, a fixing band, scrap metal fitting, or the like. When the fixing band is applied, the covering material can be fixed by the squid effect of the protrusion. That is, by applying a fixing band, it is possible to improve the adhesion with the coating mortar or concrete around the wood, and suppress the sliding action that acts between the coating layer and the core wood that occurs when internal stress acts, The stress level can be increased. In order to increase the strength of the covering material itself, a metal reinforcing material such as a reinforcing bar or a wire mesh can be used. It is preferable that the reinforcing member and the fixing means are firmly bonded to each other.

The cement mortar includes resin-mixed cement mortar. Mortar or concrete,
A formulation that is highly waterproof, corrosion resistant, and weather resistant is required. Regarding waterproofness, the control value of the hydraulic conductivity of mortar or concrete made with the composition described below is 100 x 10
If it is about ^-12 cm / S or less, a highly watertight mortar or concrete can be obtained and the durability of the core wood can be secured. A waterproofing agent may be mixed in for sufficient waterproofness. Corrosion resistance and weather resistance are required to withstand more than 30 years in water or air. Normal Portland cement can meet these requirements well, and usually concrete is sufficient.

The outer shape is determined by the mold. In the case of manufacturing a long columnar structural material using logs, the logs are put into a mold of the shape and cement mortar or concrete is cast around the logs to form a cylindrical structural material.
It is also possible to use a rectangular frame as a form material and a prismatic structural material. Further, a plurality of timbers are joined by using fasteners, and cement mortar or concrete is cast around the timbers to form a structural material having an arbitrary shape such as a box shape. Furthermore, a structural material having a complicated shape can be formed by fastening timber to a shape close to a finished shape in a bridge girder or the like and applying a uniform cement mortar or concrete covering material around the timber. The thickness of the coating material of cement mortar or concrete must be such that cracks do not occur and the waterproofness is not destroyed, and in the case of cement mortar, it is preferably 5 mm or more. In the case of concrete, it is necessary to make it at least twice the size of the coarse aggregate mixed therein. These thicknesses vary depending on the properties of cement mortar or concrete. In the case of resin-mixed cement mortar, the compounding agent is dense and the mutual adhesiveness is great, so a slightly small value, for example 3 to 5 mm
The above can be done.

Since the wood-based composite structure constructed as described above uses wood as the core material, it has high strength and shearing force, and is tough. In addition to the strength of the core material, the overall strength provides a lightweight and tough structural material due to a synergistic effect with the strength of the covering material fixed around the core material.

The durability can be guaranteed for 30 years or more. Actually, durability of 50 years or more can be expected. The present inventor takes out wood that is normally buried in concrete for 40 years or more,
We have confirmed its durability. As a result, the wood was sound with no decay. In addition, a sardine and three-leaf clover were embedded in concrete and left unattended for 12 years. As a result, the sardine was preserved in a smoked state without rot, and the three-leaf clover retained its blue color. We have received experimental reports.

[0019] Even in the case of dismantling a house over 40 years old with a mortar wall on which a lath wire mesh is laid on a plate material and mortar is applied on it, the plate material retains the color at the time of construction and the strength is also reduced. The absence is a common occurrence. From these points, the wood-based composite structural material of the present invention has a durability of at least 30 years or more, and since the strength of the core material is guaranteed during this period, slab materials such as roofs, U-shaped groove lids, floor slabs, It can be widely used for exterior structures such as cross girders, retaining structures, wooden girder bridges, river structures, stairs, artificial fishing reef structures, etc. If the supply of a spoilage factor such as oxygen is cut off, the durability of the wood itself is inherently permanent, even if water is supplied.

According to the present invention, natural wood is used as a core material, and a metal piece for assembling wood and other members is provided on the core material so as to protrude, around the core material, or around the core material. Around the metal piece is covered and molded with a coating material made of cement mortar or concrete having waterproofness, corrosion resistance and weather resistance to finish it into a required shape, and the core material is fixed to fix the coating material to each other. Means are provided.

The other member means another wood-based composite structural material or other structural material. Structural materials are often used in combination with each other, and when they are combined, it is usual to bolt through through bolts, fastening bands, or metal pieces to each other, or weld them together.

Therefore, in the present invention, the metal piece for assembling the other members is provided so as to protrude from the core material. This piece of metal contains
Drill holes for inserting bolts. The shape, mounting position, and number of metal pieces differ depending on the combination status of structures and the mounting method. Various techniques can be used with ordinary technology.

The present invention is the above-described wood-based composite structure, characterized in that an antiseptic and ant-preventive coating is provided between the core material and the coating material. This coating may be separately formed inside the coating material, or the coating material itself may have the function.

As the film having antiseptic property and ant-preventive property, those specified in JISK2439 and JISK1570 shown in the conventional example can be used. However, try not to use substances that are released into the water and pollute rivers as much as possible. Even though it is covered with mortar or concrete,
This is because there is a possibility that a crack will occur and some leakage will occur from that part. Further, it is possible to use a zeolite in which a chromium / copper / arsenic compound, a boron compound, cupric oxide, zinc chromate, an alkylammonium compound, and other components effective for wood preservative / ant control are adsorbed and supported.
Cement mortar or resin-mixed mortar and, if necessary, an appropriate extender are added to these zeolites to obtain a coating material. Antibacterial by coating these materials with antiseptic and ant-proof function,
It is possible to obtain a durable wood-based composite structural material having an excellent antifungal effect.

[0025] By using wood treated with antiseptic and ant as a core material,
In order to form a structural material having the function of suppressing the release of the chemical liquid to the outside, Na-type artificial zeolite is impregnated in a paint or cement mortar or other suitable coating material,
It is also possible to coat the surface of wood with this and form a film by coating. As a result, Na ions are replaced with harmful substances and adsorbed, so that the antiseptic treatment material containing harmful substances can be used as a recycled product of the structural material of the present invention.

Ions such as iron, copper and borate supported on zeolite have a sustained release property due to the ion adsorption function of the zeolite, the ion exchange function and the catalyst function. Each ion is not freely released into nature. Therefore, it does not cause environmental pollution. Ions that have been once adsorbed on zeolite and are effective for the preservation of wood are effective in preserving and controlling termite of wood due to the sustained release property of zeolite.
It can be functionally and stably maintained. Since there is no deterioration or leaching of the wood preservation solution, the durability of the wood is greatly improved and the reliability is improved. Since no harmful substances such as heavy metals remain in wood and concrete after the end of their useful life, the cost required for final disposal is low and natural reduction is possible.

In the antiseptic and ant-repellent coating of the present invention, the amount of the drug may be extremely small. This is because the present invention is basically not required to have antiseptic property and anti-termite property, and is intended to have a secondary effect when the coating material is cracked. In addition, in order to have antiseptic and ant-proof properties, in the case where zeolite is mixed in the mortar, since zeolite has the property of supporting various metal ions and releasing gradually, it is effective over a long period of several decades. It also has the advantage that it has extremely low toxicity and can be used with confidence. In any case, the antiseptic and ant-preventive coating for the secondary function of the present invention is economical and safe because the amount of the drug is small and the release amount can be suppressed to a minimum. .

The present invention is the above-described wood-based composite structural material, characterized in that a waterproof film layer is interposed between the core material and the covering material. As the waterproof film, a material having as large elasticity as possible, such as a solvent such as xylene, methanol, ethanol, isopropyl alcohol, or a silicone solution, is preferable.

By interposing a waterproof film layer around the core material, the waterproofness and airtightness can be maintained even if the mortar or concrete covering material is cracked, and the durability of the wood is improved by oxygen and moisture. It can prevent the sex from being disturbed.

As the waterproof film layer, a film of rubber or plastic resin is directly applied, or a waterproof coating is applied,
After the drying, a film can be formed around the core material. When the film is made of rubber, the waterproof film layer will not be destroyed for a long period of several decades even if the coating material is cracked and the material expands or contracts, ensuring the durability of the core material. Can be

By mixing an antiseptic and ant-preventive agent such as zeolite described above in the paint, a coating having antiseptic and ant-repellent properties in addition to waterproof property can be obtained. Due to the effect, it is possible to construct a wood-based structural material with extremely large durability.

The wood does not decay even if it is supplied with water unless oxygen is supplied. For example, large trees submerged in lake water do not decay over hundreds of years. Therefore, in the case of the waterproofed wood as described above, the circulating flow is eliminated by the waterproof film and oxygen is blocked, so that the wood does not decay and the durability becomes great.

The present invention is the above-mentioned wood-based composite structural material, characterized in that the outer surface of the covering material is provided with a skin for environmental protection. What is the eco-friendly skin?
For the purpose of aesthetic presentation, it means that the surface is uneven and has a woody finish, or that it is coated with zeolite-containing mortar that carries trace element ions such as Ca, Mg, NH4, Fe, etc., corresponding to the aquatic ecosystem. .

According to the wood-based composite structural material of the present invention obtained as described above, the original characteristics such as high strength, light weight and pollution-free nature of wood are fully utilized, and it is used because of conventional corrosion. It can be used for various applications that were difficult to do. Since it can be processed with simple equipment, the production cost is low and the range of use is increased. Specifically, wooden guard fences on roads, earth barriers on embankments,
It can be applied to structures such as sill work, retaining structures, stairs, river structures, bridge girders, and artificial reef structures. In addition, since the external shape of the conventional log can be arbitrarily set, it is possible to provide a prismatic material, a box-shaped body, and other structural materials of various shapes, and it is possible to expand the design range of various structures. .

Since the wood can be used as it is by simply removing the bark, the cost of sawing can be basically omitted, the waste produced by the scrap materials is not discharged, and all the produced materials are utilized to construct a zero emission system. it can.

[0036]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 shows an embodiment of the present invention.
In the above, a coating 2 having antiseptic and anti-termite properties is applied around the core material 1, and a coating material 3 of ordinary cement mortar or concrete or resin mortar is applied around the core material 1 to provide an aesthetic appearance. A wood-like epidermis 4 is provided. The covering material 3 in this example is assumed to be made of concrete. The coating 2 is assumed to be cement mortar mixed with zeolite. 42c width test for concrete coating strength
m, length 50 cm, thickness 12 cm U-shaped groove cover, the composite material of wood covered with concrete was 55% lighter than pure concrete and the strength was 35 KN against the standard value of 30 KN. It had high strength. In the present embodiment as well, it is lightweight and has high strength.

The core material 1 is obtained by cutting a log of a fixed length, which has been brought into the wood market, to a desired length and peeling the bark with a water jet or the like. The bark may be manually peeled off and used as a roofing material or the like.
It is preferable to use a roller-type machine for peeling and having many small scratches on the surface.

The core material 1 is provided with an insizing 5 such as a V-cut, which serves as a fixing means for the covering material 3. Although not shown, reinforcing bars may be used if necessary. When reinforcing reinforcing bars are used, the reinforcing bars arranged in the longitudinal direction around the core material 1 and the spiral reinforcing bars arranged at equal intervals in the circumferential direction are weld-stopped, and the core material 1 is fixed by using a nail material or the like. It is preferable to firmly fix it to

The coating film 2 is formed as thin as possible. Specifically, a thin coating of cement mortar mixed with zeolite is sufficient. For this purpose, the cement mortar may be diluted to an appropriate concentration. It is possible to mold the coating film 2 with a mold, but this is disadvantageous because the molding operation requires time and effort.

The cement mortar is compounded with a high performance water reducing agent at a W / C ratio of about 30%. The standard volume ratio is water: cement: sand = 1: 1: 20. The mortar flow is preferably about 250 to 300. Mortar flow is 750
~ 800 mm of high flow concrete is used.

Zeolites mixed in cement mortar are chromium / copper / arsenic compounds, boron compounds, second oxides.
Copper, zinc chromate, alkylene ammonium compound,
Other wood preservatives are used by adsorbing and supporting effective ingredients. The amount of zeolite mixed in the cement mortar is set as low as possible so that the effect can be achieved by applying the zeolite to the core material 1. Specifically, it is 5 to 50%, preferably 10 to 100 parts by weight of cement.
It is about 30%. The coating may be spray coating with a mortar gun. When using a mortar gun, the thickness is 3 to 5 mm, but there is no problem. When artificial zeolite is used as an antiseptic treatment measure for wood, about 20 to 30% of the unit cement amount is mixed with the outer ratio.

A pair of metal pieces 6 are provided near both ends of the core material 1.
Is installed. The metal piece 6 is for assembling and joining the structural materials to each other, and needs to be firmly fixed to the core material 1. The metal piece 6 has a hole 7 for inserting a bolt.

The covering material 3 made of concrete is molded by a mold (not shown) after the coating material 2 and the arm pieces 6 are applied to the core material 1 together with the skin 4 or before the skin 4 is formed. The water-cement ratio of concrete is 45% or less,
Use a high flow 750-800 mm slump flow with an appropriate amount of superplasticizer. It is also possible to mix zeolite with about 20% of wood-preserving ions supported in cement. In this case, the coating 2 described above may be omitted. Further, the coating 2 may be omitted, and the mixing of zeolite into the coating 3 may be omitted.
The reason is that it depends on the application of the structural material. That is, when there is no risk of cracking in concrete, no preservative is required, but when the member is subjected to bending stress, anticipation of cracking of the concrete is expected, and the antiseptic and anticorrosive effect of the wood is expected. Apply measures to coated mortar or coated concrete. The addition of the antiseptic and ant-preventing function is appropriately performed according to the properties and uses of the structural material.

Concrete is appropriately filled around the metal piece 6. Filling may be omitted if there is no concern about corrosion of the metal pieces. When concrete is filled around the metal piece 6, the arm 6a is formed.

The skin 4 is appropriately constructed depending on the type of structural material. For example, when the road protection fence is to be finished like wood, the color of the concrete 3 and the surface irregularities of a mold (not shown) may be appropriate and the skin 4 may be formed by a molding operation. By appropriately treating the surface of uncured concrete, a skin can be formed.

When the skin is finished like a wood, the surface is actually concrete and its content is real wood. In this case, the difference from the structure made of only wood is
The point is that the durability is completely different. The durability of wood alone is at most 10 to 15 years, even with the use of preservatives. On the other hand, the durability of the wood-based composite structural material of the present invention is expected to be at least 20 to 30 years, and actually 50 years or more.

When the thickness of the covering material 3 can be 40 mm or more, the coating film 2 can be omitted. This is because 40 mm concrete has high strength and sufficient waterproofness, and the core material inside can be sufficiently stored by itself.

From the above, as shown in FIG. 1, high strength,
Lightweight, long-term durability, and easy handling of wood-based composite structural material 8
Is obtained.

The tensile strength per unit square millimeter of concrete is 0.2 kg, which is a negligibly small value. On the other hand, cedar wood is excellent at 4.5 kg. On the other hand, the specific gravity of concrete is 2 to 3, whereas the specific gravity of cedar is 1 or less, although it depends on the degree of drying. Therefore, it is possible to obtain a wood-based composite structural material which is several times lighter in weight and several times higher in strength. Also, unlike logs, the outer shape can be designed in any size, so handling is convenient and it can be applied to various structures.

The coating 2 can also be used as a waterproof film. For example, a natural rubber or a flexible resin coating having a relatively large elongation is prepared, and zeolite having antiseptic and ant-preventive properties is mixed therein and applied to the core material 1. As a result, a waterproof film having antiseptic and antproof properties is formed around the core material 1. Even if the covering material 3 is cracked, the waterproof film is not broken, the waterproofness and airtightness are secured, and the core material 1 does not decay and has durability. Whether or not the coating 2 is provided is determined depending on the use of the structural material 8. Reliable waterproofing is required when used in the air, rather than in water. The reason is that in water, the coating material 3 cracks,
Even if water enters from there, it does not rot immediately because it is not a circulating flow. However, in fences and the like used for embankments, small animals such as ants may enter through the cracks and air may circulate to cause rapid decay. When antiseptic and ant-preventive zeolite is mixed in the core material 1, even if a crack is generated, the subsequent decay can be reliably prevented, and the durability can be remarkably improved.

FIG. 2 shows an example in which the fixing means for fixing to the core material 1 in the wood-based composite structural material 9 in which the covering material 3 is applied to the cylindrical core material 1 is composed of the snails 10 and the metallic fixing band 11. It is a longitudinal section (a) and a horizontal section (b) which show.

Since the mussels 10 are U-shaped and are driven in a large number around the core material 1, the core material 1 and the covering material 3 can be firmly and firmly fixed to each other and can be reliably attached. . The fixing band 11 is formed by connecting a pair of semicircular rings in a circular shape with bolts. The covering material 3 can be fixed at the portion protruding from the core material 1 to prevent the deviation.

FIG. 3 shows a wood-based structural material 13 in which two log-shaped core materials 1 and 1 are tightly bound by a plurality of binding bands 12 and a covering material 3 is applied around the binding bands 12 to finish into a prismatic shape. It is a longitudinal sectional view (a) and a transverse sectional view (b). Reinforcing bars 14 are reinforced to ensure the strength of the covering material 3. Further, in order to ensure the bundling of the core materials 1, through bolts 15 for inserting the core materials 1 and 1 are inserted, and nuts are fastened.

As described above, the core material 1 can be freely combined and constructed. It is also possible to combine a plurality of core materials in the vertical direction. It is necessary that the combined core materials are securely bonded to each other. The wood-based composite structural material 13 of the present invention
As for the structural material, the wood part is the mainstream, and the strength depends on the wood part. Therefore, in the core wood,
It is better not to provide bolt holes directly if possible. Arm reinforced reinforcing bars are laid in the assembly arm in such a way as to embrace the wood core. When bolt holes are provided, special consideration must be given to the strength and the water immersion property.

FIG. 4 is a perspective view showing the wood-based composite structural material 8 shown in FIG. Arm 6
a is horizontally arranged toward the inside. In the arrangement shown, the wood-based composite structural material 8 can be fixed to another structural material (not shown) by inserting a long bolt from the vertical direction into the hole 7 of the arm 6a.

FIG. 5 is a side view showing an example in which the wood-based composite structural material 8 shown in FIG. A long through bolt 17 is vertically passed through the hole 7 of the arm 6a and fixed. Stones and spherical porous concrete cables are packed inside.

The woodworking floor 16 constructed in this way is
It is installed in a river in a semi-filled state with its head protruding from the surface of the water, and is used for improving water quality, water quality, or the ecosystem. A large amount of microorganisms, aquatic plants, and small animals flourish in the spaces between the stones packed inside and inside the porous concrete cable, improving the habitat of living things in rivers. In the woodworking floor 16 of this example, since the wood-based composite structural material 8 is used, the durability is extremely long, at least 20 to 30 years,
It can contribute to the improvement of river environment for a long time.

FIG. 6 is a side view (a) and a rear view (b) showing an example in which the one-sided frame 18 of the earth retaining method is constructed by using the wood-based composite structural material of the present invention. In this example, the arm 6a shown in FIG. 4 is not used for mutual fixing, but an example of a wood-based composite structural material is shown in which long bolts (not shown) are fastened to each other through through holes provided in the core material 1.

As shown in FIG. 6, the one-sided frame 18 includes a pair of front pillars 19 and rear pillars 20 on the front and rear sides, and a cross bar 2 on the upper and lower side surfaces.
1, 22 and the cross bars 23, 24 are combined to form an outer frame. On the bottom, there are a large number of laid trees 25 on the front and back crossbars.
Are arranged in parallel in the front-rear direction, horizontal trees 26 are arranged in parallel in the side surfaces, and rear trees 27 are arranged in the front and back surfaces.
And the front trees 28 are arranged in parallel to form a cage-shaped container. The upper surface is open. Each member 19-28
Are each composed of the wood-based composite structural material of the present invention. A broken line penetrating each member indicates a bolt. The inside is filled with stones.

The one-sided frame 18 constructed by combining the wood-based composite materials 19 to 28 as described above has a durability of at least 20 to 30 years as in the case of the woodworking floor shown in FIG. It can be stopped and the mountain can be controlled. The front pillars 19 and the front trees 28 are exposed to the weather, and if cracks occur, ants may enter through the gaps and cause the wooden core material 1 inside to decay early. Therefore, the wood-based composite structural material having such a risk is appropriately provided with antiseptic and anti-termite functions as shown in FIG.

The same applies to the other members 20 to 27, but the member arranged on the back surface is semi-embedded in the soil,
Used in high water content. In such a case, the content of zeolite should be changed, a waterproof film should be applied, or zeolite should be added to the covering material 3 in order to increase durability in accordance with the state, and various antiseptic agents should be used. You can take anti-termite measures.

FIG. 7 is a front view (a), a plan view (b) and a side view (e) showing the double girder construction structure 29 in earth retaining work. The illustrated cross girder construction structure 29 is a combination of a large number of wood-based composite structural materials 1 similar to that shown in FIG.
This structure 29 has an earthwork 31 on the back surface on a substructure 30.
It is placed in a stable shape by diagonally covering. Stones 3 inside
2 is packed.

The double-girder construction structure 29 shown in FIG. 7 receives a pressure not to be defeated by the one-sided frame 18 shown in FIG. In the wood-based composite structure 1 of the present invention, wood is used as the core material 1, and since the same strength as that of the reinforcing steel-containing concrete can be obtained, it is possible to sufficiently withstand these pressures. Moreover, as already mentioned, it can be designed to last for at least 20 to 30 years, so that earth retaining can be performed safely for many years.

FIG. 8 is a front view (a), a plan view (b), and a side view (c) showing a double-type double girder construction method. As shown in the figure, in the double girder construction structures 29a and 29b of this example, the double-girder-like structure 29a of 7 rows and 4 columns is assembled from the front side, and the structure 29b of 5 rows and 4 columns is assembled on the back thereof. The whole is composed.

The double girder construction structures 29a and 29b of this example are
Since it is assembled in multiple stages, the wood-based structure 1 located in the lower stage receives a larger pressure. Since the wood-based composite structure of the invention has high strength, it can be dealt with without any problems.

Further, the double girder construction structure 29a, 29 of this example
In the case of b, the structure 29b on the back side is always buried in the soil. Since the wood-based structural material 1 that is buried in the soil is in a more oxygen-deficient state, its antiseptic property and ant-proof property can be milder.

In the above-mentioned embodiments, examples of the structure are the woodworking floor, the one-sided frame, and the double-girder construction structure. It is widely applicable to artificial fishing reef structures with zeolite mixed in the skin, road pillar structures, road protection fences, other fences, and various structures that require high strength for many years.

Further, as the shape examples, examples of a cylindrical shape and a prismatic shape are shown, but since the outer shape is formed by a mold,
In addition to this, it is possible to correspond to any shape.

The present invention can be applied to recycling of wooden guard fences, for example. That is, it is difficult to incinerate or dispose of the protective fence that has undergone antiseptic treatment by landfill 2. Therefore, in the present invention, these objects to be recycled can be made harmless by covering them with, for example, cement or concrete mixed with Na-type artificial zeolite and substituting the harmful substances in the preservative with Na ions and confining them in the concrete. As a result, a pollution-free recycling system can be constructed.

FIGS. 9A to 9D are perspective views showing another mounting method of the arm. FIGS. 10A and 10B are perspective views showing a configuration example of another metal piece when the arm is attached. Figure 9
As shown in, wood-based composite structural materials 8A, 8B, 8C, 8
D shows a plurality of various arms 6a attached.
The wood-based composite structural material 8A shown in FIG. 9A is simply provided with a pair of front and rear arms 6a in the orthogonal direction. Figure 9 (b)
The wood-based composite structural material 8B shown in (1) is a side provided with a pair of arms 6a projecting in the horizontal direction at the front and rear, respectively. The hole 7 for inserting the bolt can be opened not only in the vertical direction but also in the horizontal direction. Wood-based composite structural material 8c shown in FIG. 9 (c)
Shows the side where a pair of front and rear arms 6a are provided by changing the position and angle with respect to the other arms. The wood-based composite structural material 8D shown in FIG.
This is the side where only one a is provided.

As shown in FIG. 10 (a), the metal piece for arm attachment is a metal piece 33 for holding the core wood 1,
The tubular metal piece 34 is inserted between the ring members extending in the arm tip direction to form a hole for inserting a bolt. The metal piece 35 shown in FIG. 10 (b) is different in that the ring portion is narrowed down and that the holding portion is single and one end is an open end. As shown in these examples, the metal pieces 33, 35 have a shape in which the core wood 1 is held, and for the holes for inserting bolts, a tube material for firmly joining the inserted bolts is used. , A strong arm can be configured so that it can be firmly coupled to other members.

The present invention is not limited to the above-mentioned embodiment, and various modifications can be carried out without departing from the gist of the present invention.

[0073]

INDUSTRIAL APPLICABILITY As described above, the present invention uses natural wood as the core material, and the surrounding area is covered and molded with a covering material made of cement mortar or concrete having high waterproofness, touch resistance and weather resistance to obtain a desired shape. Finishing, the core material is provided with fixing means for fixing the covering materials to each other, and is a wood-based composite structural material. Therefore, it is lightweight, has high strength, and is durable for at least 20 to 30 years. It is possible to provide a high-quality wood-based composite structure material.

By coating cement mortar or concrete around the core material to prevent decay and improve durability, the cost is low, processing costs are low, and high-quality structural materials can be provided at a particularly low price. . Moreover, since natural timber, which is currently in a state of oversupply that does not lose demand, can be used as it is, its industrial utility value is extremely high. A non-polluting wood-based composite structure can also be obtained by reusing an already-preserved wood-based structure to reuse the used wood-based structure and coating it with cement mortar or concrete mixed with Na-type zeolite.

Since the durability is exceptionally high and the stability can be guaranteed, the places where earth retaining works and girders are applied are widened, and
It can be applied as various external construction materials such as concrete lids, slabs, wooden girder bridges, stairs, road protection fences, etc. in addition to single-sided frames and double-girder construction structures.

Basically, since the chemical solution is not injected, the nature is not polluted, and there is no problem even if it is disposed of at the time of disposal without any pollution.

When a metal piece for assembling other members to each other is provided on the core material and an arm for assembling is provided, it is possible to assemble each other via the arm, and to assemble various structures by facilitating the assembly. be able to.

When a coating having antiseptic and ant-repellent functions is provided between the core material and the coating material, even if the coating material has a crack, the decay rate can be well controlled and the durability can be maintained. .

When the coating is composed of cement mortar mixed with zeolite supporting ions having antiseptic and ant-preventing functions, a film, or a paint, it is possible to surely prevent decay even if cracks occur, and durability is improved. Can be ensured. For waterproof rubber paints and films,
The effect is tremendous.

When an environment-friendly outer skin is provided on the outer surface of the covering material, it can be applied to various structures while exhibiting an aesthetic appearance and adapting to an ecological system.

[Brief description of drawings]

FIG. 1 is a vertical sectional view (a) and a horizontal sectional view (b) of a wood-based composite structural material according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view (a) and a horizontal sectional view (b) of a wood-based composite structural material according to another embodiment of the present invention.

FIG. 3 is a vertical sectional view (a) and a horizontal sectional view (b) of a wood-based structural material according to still another embodiment of the present invention.

FIG. 4 is a perspective view showing a wood-based composite structural material with an attachment arm of the present invention.

5 is a side view of a woodworking floor constructed by assembling the wood-based composite structural material of FIG. 4. FIG.

FIG. 6 is a side view (a) and a rear view (b) of a one-sided frame constructed by assembling the wood-based composite structural material of the present invention.

FIG. 7 is a front view (a), a plan view (b) and a side view (c) of a double girder construction structure constructed by being assembled with the wood-based composite structural material of the present invention.

FIG. 8 is a front view (a), a plan view (b) and a side view (c) when the soil retaining method shown in FIG. 7 is applied in a double manner.

FIG. 9 is a perspective view showing another mounting method of the arm.

FIG. 10 is a perspective view showing a configuration example of another metal piece for attaching an arm.

[Explanation of symbols]

1 ... Core material 2 ... Antiseptic film 3 ... Coating material 4 ... Epidermis 5… Insizing 6 ... Metal pieces 6a ... Arm 7 ... Hole for bolt insertion 8, 9, 13 ... Wood-based composite structural material 10 ... Kasugai 11 ... Fixed band 12 ... Tying band 14 ... Reinforcing bar 15, 17 ... Through bolt 16 ... Woodworking floor 18 ... One-sided frame 19 ... Front pillar 20 ... Rear pillar 21, 22, 23, 24 ... Yokogi 25 ... Shikiki 26 ... Yoko Nagi 27 ... Gosei 28 ... Maegarigi 29, 29a, 29b ... Double girder construction structure 30 ... Substructure 31 ... Tonami 32 ... stone

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4F100 AE01B AE01C AK01E AP01A                       AT00E BA03 BA04 BA05                       BA10B BA10C BA10E DD31                       GB07 JB02D JD05E JK01                       JL00 JL03                 4G052 AB24 AB30 AB45                 4G058 GA01 GA08 GC07 GE01 GE02                       GE04 GE06

Claims (5)

[Claims] 1. A natural wood is used as a core material, and the surrounding area is covered and molded with a covering material made of cement mortar or concrete having waterproofness, corrosion resistance and weather resistance to finish into a required shape, and the core material is covered with the covering material. A wood-based composite structural material comprising fixing means for fixing the materials to each other. 2. A natural wood is used as a core material, and a metal piece for assembling other members is provided on the core material so as to protrude from the core material, or around the core material, or around the core material and around the metal piece. Is coated and molded with a waterproof, touch-resistant and weather-resistant cement mortar or concrete covering material to finish it into the required shape, and the core material is provided with fixing means for fixing the covering materials to each other. A wood-based composite structural material characterized by the above. 3. The wood-based composite structural material according to claim 1, wherein an antiseptic and ant-preventive coating is provided between the core material and the coating material. Wood-based composite structural material. 4. The wood-based composite structural material according to claim 1, 2 or 3, wherein a waterproof coating or film layer is interposed between the core material and the covering material. -Based composite structural material. 5. The wood-based composite structural material according to any one of claims 1 to 4, wherein the outer surface of the covering material is provided with a skin for environmental protection. -Based composite structural material.