JP2001032397A - Terminate prevention structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a termite prevention structure of a building capable of protecting a thermal insulating material used for a thermal insulating footing from termite harm. SOLUTION: A termite prevention structure of a building A is so constituted that the inside of a thermal insulating material 4 adhered to an outside face 1a of at least the circumferential rise section 1 of a mat foundation 3 having the circumferential rise section 1 provided to the circumferential part of the building A and a footing slab 2 is physically prevented from a termite getting into a framework B and a floor framing C through the inside thereof. Then, a lath net 7 is stretched at least within the scope of a specific height on the ground from a lower edge 4f adhered to a concrete sub-slab 5 executed downward of the mat foundation 3 on the surface not adhered to the mat foundation 3 of the thermal insulating material 4 or the footing slab 2 and, at the same time, polypropylene fiber compounded mortar 9 is applied to an upper edge 4e of an outside face 4a of the thermal insulating material 4 from a corner angle 8 of a lower edge 7d of the lath net 7 and the mat foundation 3 or concrete sub-slab 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a termite-preventing structure for a building for physically preventing termites from passing through a heat insulating material used for a heat-insulating foundation of a building and entering a shaft or floor. .

[0002]

2. Description of the Related Art As is well known, a basic heat insulating method for arranging a heat insulating material on an outer peripheral portion of a foundation of a building is not only used in cold regions,
It is also spreading in warm regions. The insulation is disposed outside or inside, or on both sides, of the outer peripheral portion of the foundation. Among them, as the exterior finish of the insulation material arranged outside,
Mortar is often applied.

[0003]

However, in the above-described construction examples, cracks may occur due to the characteristics of the mortar for exterior finishing, and as a result, not only the design property is impaired, but also the gaps between the cracks are generated. There is a risk that termites will invade and break through the heat insulating material, and further pass through the inside of the heat insulating material and also penetrate into the upper frame and floor.

[0004] The present invention has been made in view of the above-described problems, and physically prevents termites from passing through the interior of a heat insulating material used for a heat insulating foundation and entering a shaft or floor. It is an object of the present invention to provide an ant-control structure for a building that can be prevented effectively and effectively.

[0005]

Means for achieving the above object are as follows. First, the above-mentioned outer peripheral rising portion of a solid foundation having an outer peripheral rising portion provided on an outer peripheral portion of a building and a foundation slab. A termite passes through the inside of a heat insulating material in which the inner surface is in close contact with the outer surface of the base slab and the outer surface of the base slab, and the lower surface is in close contact with the upper surface of abandoned concrete constructed below the base slab. A termite structure for a building that physically prevents entry into a set, wherein a lath net is stretched from a lower edge of the outer surface of the heat insulating material that is in close contact with the discarded concrete to at least a predetermined height above the ground. And applying the fiber-containing mortar.

Second, a termite passes through at least the inside of a heat insulating material which is in close contact with the outer surface of the outer peripheral rising portion of a solid foundation having an outer peripheral rising portion and a foundation slab provided on the outer peripheral portion of the building. And a termite structure of a building that physically prevents intrusion into the floor set, which is in close contact with the solid foundation on the surface that does not adhere to the solid foundation of the heat insulating material or the discarded concrete installed below the foundation slab. In other words, a lath net is stretched over at least a range from the lower edge to a predetermined height above the ground, and the fiber-containing mortar is applied.

Third, termites are physically prevented from passing through the inside of the heat insulating material which is in close contact with the outer surface of the foundation slab of the building, and entering the shaft and floor set installed on the foundation slab. The termite structure of a building to be built, the surface of the heat insulating material not in close contact with the base slab is in a range of at least a predetermined height above the ground from the lower edge in close contact with this base slab or discarded concrete constructed below the base slab. And the fact that a lath net is stretched and a fiber-containing mortar is applied.

Fourth, termites are physically prevented from passing through the inside of the heat insulating material closely attached to the outer surface of the rising portion of the cloth foundation installed on the outer peripheral portion of the building and entering the shaft and floor. The termite structure of a building, in which a lath net is stretched from the lower edge of the heat insulating material not in close contact with the cloth base to at least a predetermined height above the ground, to provide a fiber-containing mortar. Has been applied. Fifth, the lath net and the fiber-containing mortar are stretched and applied to at least a region up to an upper edge of the heat insulating material. Sixth
Further, the fiber of the fiber-containing mortar is polypropylene.

Seventh, the lath net is made of a corrosion-resistant material that is resistant to termite secretions. 8th
The net of the lath net has a maximum dimension of 2 in the cross section of the head of the termite in at least one direction.
That is, the size is twice or less.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the termite structure of a building A according to the first embodiment has, for example, an outer peripheral rising portion 1 and a foundation slab 2 provided on the outer peripheral portion of the building A. Outer surface 1a of the outer peripheral rising portion 1 of the solid foundation 3
And the inner side surface 4b is in close contact with the outer side surface 2a of the base slab 2,
Further, it is physically required that the termites 6 pass through the interior of the heat insulating material 4 in which the lower surface 4d is in close contact with the upper surface 5c of the discarded concrete 5 constructed below the foundation slab 2 and penetrate into the shaft set B and the floor set C. And a lower edge 4f of the outer surface 4a of the heat insulating material 4 which is in close contact with the waste concrete 5.
To a predetermined height L above the ground, a lath net 7 is stretched, and a corner 8 between the lower edge 7d of the lath net 7 and the abandoned concrete 5 is placed on the outer surface 4a of the heat insulating material 4. Edge 4
The mortar 9 containing polypropylene fiber was applied to the range up to e.

As shown in FIGS. 1 and 2, the solid foundation 3 has an outer peripheral rising portion 1 which is constructed in a sectional view, for example, in a rectangular shape on the outer peripheral portion of the building A, and which has a thicker outer peripheral portion, for example. And the base slab 2. Below this foundation slab 2, abandoned concrete 5 is applied over a wider area than the foundation slab 2 as needed.

It is to be noted that, in addition to the rising portion 10 continuously constructed as a partition as in this embodiment, an independent columnar body or the like may be constructed inside the outer peripheral rising portion 1. Further, the shape and the working height of the base slab 2 are not particularly limited, and a flat slab may be formed at a lower position.

The heat insulating material 4 is made of, for example, a synthetic resin foam plate, and its inner surface 4b is in close contact with the outer surface 1a of the outer peripheral rising portion 1 and the outer surface 2a of the base slab 2, and its lower surface 4d. Are in close contact with the upper surface 5c of the waste concrete 5.

The heat insulating material 4 is adhered to the outer peripheral rising portion 1 and the foundation slab 2 with an adhesive or the like, or adheres to the concrete when the foundation slab 2 or the like is cast with the heat insulating material 4 disposed. You can do it.

In this embodiment, the lower surface 4d of the heat insulating material 4 is in close contact with the upper surface 5c of the discarded concrete 5. However, the present invention is not limited to this. There may be some gaps. In this case, the gap may be filled with a filler such as mortar.

The termite 6 is an incompletely metamorphic insect living in a social life related to cockroaches, and is a general term for the termite (Isoptera) Isoptera. Examples of such termites 6 include various termites such as Yamato termite and house termite.

The polypropylene fiber mortar 9 contains at least cement, fine aggregate and polypropylene fiber, and is applied in a state where a predetermined amount of water is mixed and kneaded. This polypropylene fiber may be one obtained by cutting a commercially available polypropylene fiber, but preferably has a length of 2 to 30 mm, a width of 0.1 to 2 mm, and a thickness of 20 mm.
A slightly flat shape such as 60 μm is most suitable for construction work and has good finish performance. Also, polypropylene fiber 5 per 100 parts by weight of cement and fine aggregate
Less than parts by weight is most suitable, if necessary, water reducing agent,
Admixtures, fillers, polymers and the like may also be included. For example,
For example, a cement adhesive based on a synthetic polymer such as styrene butadiene rubber (SBR) or polyvinyl acetic acid (PVAc) may be added, or a polymer cement having a lower cement content than the adhesive cement and a fine aggregate may be added. And has the advantage that the strength, crack resistance, adhesiveness, watertightness, abrasion resistance and the like can be further improved.

Furthermore, polypropylene fiber-containing mortar 9
In this case, a termite repellent can be added as necessary, and in this case, there is an advantage that the possibility of being bitten by a termite can be further reduced. In addition, as a termite repellent, zinc, copper, a zinc compound, a copper compound, etc. are mentioned, for example.

In the case of such a mortar 9 containing polypropylene fibers, the mortar surface strength is improved as compared with a normal mortar, so that cracks can be eliminated or extremely reduced, and the width of the cracks can be extremely reduced.
The termites 6 cannot penetrate the cracked gaps. Further, by using a lath net together, the mortar surface strength can be further improved.

The fiber-containing mortar is not limited to such polypropylene fiber-containing mortar, but may be inorganic such as glass fiber, ceramic fiber, metal fiber, nylon fiber, Saran fiber, vinylon fiber, viscose. Known various fibers such as organic fibers such as synthetic resins such as fibers may be used alone or a mixture of two or more fibers may be used. Among these fibers, polypropylene fiber is the most effective in terms of workability in kneading and applying mortar and material cost.

The lath net 7 is attached to a fastening member such as a nail, a screw, a staple or the like, an adhesive, or the heat insulating material 4 in advance, or is attached at a building site of the building A. When the fastening member is used, the fastening member may be made of, for example, copper, zinc, brass, or the like, or may be contained so as to exhibit a termite repellent effect. The lath net 7 is not limited to a metal such as a metal lath or a wire lath. For example, a stitch formed by weaving or knitting a fiber, filament, strand, or the like from ceramics, glass, synthetic resin, or the like. A sheet or the like may be used.

Here, when the termites 6 try to enter the inside of the heat insulating material 4, the termites 6 are vulnerable to light, wind and the like.
3, the outer surface 4a of the heat insulating material 4
If a lath net 7 is stretched and the mortar 9 containing PP fiber is applied to a range from at least a predetermined height L above the lower edge 4f in close contact with the discarded concrete 5, the termite 6
Since there is no gap through which the heat can enter, the heat insulating material 4 can be protected from damage by the termites 6. Therefore, the termite 6 passes through the inside of the heat insulating material 4 and the upper frame B or the floor C
There is an advantage that it can be prevented from invading.

It is sufficient that a lath net is stretched at least in the above range. However, in consideration of exterior finishing, a lath net 7 is stretched over the entire outer surface 4a of the heat insulating material 4, and a polypropylene fiber blend is formed. If mortar 9 is applied, there is an advantage that an exterior finish excellent in design without cracks can be obtained. Further, the lath net 7 is preferably made of a corrosion-resistant material that is resistant to termite secretions. Specific examples include, but are not limited to, stainless steel, a hardness that is resistant to secretions such as formic acid released from termites and that termites 6 cannot chew, preferably at least. Any material that has a Shore hardness of about 70 or an impact strength that cannot be crushed and has a service life of several tens of years under the use environment may be used. Further, preferably, the mesh of the lath net 7 has the head 6 of the termite 6 in at least one direction.
It is preferable to set the dimension to twice or less the maximum dimension H in the cross section a. If the soft body portion 6b of the termite 6b is dimensioned to be in contact with the stitches, the mortar 9 containing polypropylene fibers is cracked by an earthquake, and the mesh of the lath net 7 is exposed in the ground. Nevertheless, since termites dislike contact with the mesh, there is an advantage that termites can be reliably prevented from entering.

As shown in FIGS. 4 and 5, the termite-prevention structure of the building A according to the second embodiment is configured such that, for example, the inside of the heat insulating material 4 closely attached to the outer side surface 22a of the foundation slab 22 of the building A is covered with termites 6. Is physically prevented from passing through and penetrating into the frame B and the floor C installed on the base slab 22, and the lath net 7 is formed on the entire outer surface 4a of the heat insulating material 4. At the same time, the upper edge 4e of the outer surface 4a of the heat insulating material 4 is extended from the corner 28 between the lower edge 7d of the lath net 7 and the discarded concrete 25 constructed below the foundation slab 22.
The mortar 9 containing polypropylene fiber is applied to the range up to the above.

In this embodiment as well, the lower surface 4d of the heat insulating material 4 is in close contact with the waste concrete 25. However, the present invention is not limited to this. There may be. In this case, the gap may be filled with a filler such as mortar. Further, the entire outer surface 4a of the heat insulating material 4 does not need to be covered with the lath net 7.

As described above, the lath net 7 is stretched over the entire outer surface 4a of the heat insulating material 4 and the lower edge 7d of the lath net 7 is provided.
If the mortar 9 containing polypropylene fibers is applied to a range from the corner 28 of the waste concrete 25 to the upper edge 4e of the outer surface 4a of the heat insulating material 4, the heat insulating material 4 can be formed in the same manner as in the first embodiment. There is an advantage that the intrusion of the termites 6 into the inside can be reliably prevented, and an exterior finish such as the outer side surface 4a of the heat insulating material 4 can be formed.

As shown in FIGS. 6 and 7, the termite-control structure of the building A according to the third embodiment is, for example, an outer surface 3 of a rising portion 31 of a cloth foundation 33 constructed on the outer peripheral portion of the building A.
1a, which physically prevents the termites 6 from passing through the interior of the heat insulating material 4 and adhering to the frame B and the floor set C, and the surface of the heat insulating material 4 which does not adhere to the cloth base 33. The lath net 7 is stretched in a range from the lower edge 4f to the upper edge 4e of the cloth base 33 which is in close contact with the base 32, and the corner between the lower edge 7d of the lath net 7 and the base 32. Part 3
A mortar 9 containing polypropylene fibers is applied to a range from 8 to the upper edge 4e of the outer surface 4a of the heat insulating material 4.

The cloth foundation 33 is constructed, for example, in a rectangular shape on the outer peripheral portion of the building A in plan view, and has a cross section formed by, for example, an inverted T shape from the rising portion 31 and the base portion 32.

Although the lower surface 4d of the heat insulating material 4 is in close contact with the base portion 32 in this embodiment as well, the present invention is not limited to this.
There may be some gaps. In this case, the gap may be filled with a filler such as mortar. Further, the lath net 7 does not have to be stretched over the entire outer surface 4a of the heat insulating material 4.

As described above, the lath net 7 is stretched in the above-described range of the heat insulating material 4, and at the corner 38 between the lower edge 7 d of the lath net 7 and the cloth foundation 33, the outside of the heat insulating material 4 is removed. Side 4a
If the mortar 9 containing polypropylene fibers is applied to the area up to the upper edge 4e, the same effect as in the first and second embodiments can be obtained.

Further, a cloth foundation 39 such as a partition foundation is provided inside the cloth foundation 33. However, the present invention is not limited to this. For example, an independent foundation such as a bundle foundation or a slab stone is provided. You may keep it. Further, the earth floor 42 is constructed such that the top end surface 33c of the cloth foundation 33 and the upper surface 42c thereof are substantially at the same height by the embankment 40 or the crushed gravel 41 raised inside the cloth foundation 33, This floor 42 is also
It may be installed at a lower position.

When the slab floor 42 is not constructed inside the cloth foundation 33, the floor space formed inside the cloth foundation 33 may be replaced with the slab floor 42 for the purpose of, for example, moisture proofing. If necessary, a moisture-proof sheet or the like may be laid, and a pressing layer of concrete, dry sand, dry gravel, or the like may be provided thereon.

[0034]

As described above, according to the first aspect of the present invention, at least a predetermined height above the ground from the lower edge of the outer surface of the heat insulating material which is in close contact with the waste concrete,
Since the lath mesh is stretched and the fiber-containing mortar is applied, cracks are hardly generated on the surface, termites can be prevented from entering through crack gaps, and the heat insulating material can be protected from damage by termites. . Therefore, there is an advantage that termites can be prevented from passing through the interior of the heat insulating material and entering the upper frame or floor.

According to the second aspect of the present invention, the lath net is stretched in a range from the lower edge of the heat insulating material that does not closely contact the solid foundation to the solid foundation or the discarded concrete to at least a predetermined height above the ground. Since the fiber-containing mortar is applied, cracks are less likely to be generated on the surface, termites can be prevented from entering through crack gaps, and the heat insulating material can be protected from termite damage. Therefore, similarly to the effect of the first aspect, there is an advantage that intrusion of termites into the heat insulating material can be reliably prevented.

According to the third aspect of the present invention, the lath net is stretched in a range from the lower edge of the heat insulating material that is not in close contact with the base slab or the lower edge in close contact with the base slab or the discarded concrete to at least a predetermined height above the ground. Since the fiber-containing mortar is applied, cracks are less likely to be generated on the surface, termites can be prevented from entering through crack gaps, and the heat insulating material can be protected from termite damage. Therefore, similarly to the effects of the first and second aspects, there is an advantage that intrusion of termites into the interior of the heat insulating material can be reliably prevented.

According to the fourth aspect of the present invention, the lath net is stretched in a range from the lower edge of the heat insulating material not in close contact with the cloth base to a predetermined height above the ground from a lower edge in close contact with the cloth base. Since the fiber-containing mortar is applied, cracks are hardly generated on the surface, termites can be prevented from entering through crack gaps, and the heat insulating material can be protected from termite damage. Therefore, similar to the effects of the first to third aspects, there is an advantage that intrusion of termites into the interior of the heat insulating material can be reliably prevented.

According to the fifth aspect of the present invention, the lath net and the fiber-containing mortar are applied to a range from a lower edge of the heat insulating material which is in close contact with the discarded concrete or the like to an upper edge of the outer surface of the heat insulating material. Therefore, in addition to the effects of claims 1 to 4, there is an advantage that an exterior finish excellent in design without cracking can be obtained. According to the invention of claim 6, since the fibers of the fiber-containing mortar are made of polypropylene,
In addition to the effects of claims 1 to 5, there is an advantage that workability is good in kneading and coating of mortar, and material cost can be reduced. According to the invention of claim 7, since the lath net is made of a corrosion-resistant material resistant to termite secretions, in addition to the effects of claims 1 to 5, in addition to the effect of the fiber-mixed mortar due to an earthquake There is an advantage that the termite-controlling effect can be maintained even when the cracks are cracked and the lath net is exposed in the ground.

According to the eighth aspect of the present invention, the mesh of the lath net is at least twice as large as the maximum dimension in the cross section of the head of the termite in at least one direction, that is, the soft body of the termite Is a dimension that makes contact with the mesh, and because termites dislike it, in addition to the effects of claims 1 to 5, by any chance, the fiber-mixed mortar is cracked by an earthquake and the mesh of the lath mesh is in the ground. There is an advantage that the termite-controlling effect can be maintained even if it is exposed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a termite structure of a building according to a first embodiment.

FIG. 2 is an enlarged vertical sectional view of a main part near a heat insulating material in FIG. 1;

FIG. 3A is a plan view of a termite. (B) is a sectional view taken along line YY of (a).

FIG. 4 is a longitudinal sectional view of a termite structure of a building according to a second embodiment.

FIG. 5 is an enlarged longitudinal sectional view of a main part near a heat insulating material in FIG. 4;

FIG. 6 is a longitudinal sectional view of a termite structure of a building according to a third embodiment.

FIG. 7 is an enlarged vertical sectional view of a main part near a heat insulating material in FIG. 6;

[Description of Signs] A Building B Frame set C Floor set 1 Outer circumference rising section 1a Outer side face 2 Foundation slab 2a Outer side face 3 Solid foundation 4 Insulation material 4a Outer side face 4b Inner side face 4d Lower face 4e Upper edge 4f Lower edge 5 Discarded concrete 5c Upper surface 6 Termite 7 Lath net 7d Lower edge 8 Corner 9 Mortar with polypropylene fiber 13 Ground 22 Foundation slab 22a Outer side 25 Discarded concrete 28 Corner 31 Rising section 31a Outer side 32 Base section 33 Cloth foundation 38 Corner

Claims (8)

[Claims] 1. A solid foundation having an outer peripheral rising portion and a foundation slab provided on an outer peripheral portion of a building, wherein an inner surface is in close contact with an outer surface of the outer peripheral rising portion and an outer surface of the foundation slab, and the foundation slab is provided. A termite structure of a building that physically prevents termites from passing through the interior of the heat insulating material, the lower surface of which is in close contact with the upper surface of the abandoned concrete constructed below, and penetrating into the shaft and floor sets; A termite-proof structure for a building, wherein a lath net is stretched and a fiber-containing mortar is applied to at least a predetermined height above the ground from a lower edge of the outer surface of the heat insulating material which is in close contact with the waste concrete. 2. A termite passes through at least the inside of a heat insulating material that is in close contact with at least the outer surface of the outer peripheral rising portion of a solid foundation having an outer peripheral rising portion and a foundation slab provided on the outer peripheral portion of the building. A termite structure of a building that physically prevents intrusion into the set, the bottom of which is in close contact with the solid foundation or the discarded concrete installed under the foundation slab on a surface that does not adhere to the solid foundation of the heat insulating material. A termite-prevention structure for a building, characterized in that a lath net is stretched and a fiber-containing mortar is applied from an edge to at least a predetermined height above the ground. 3. A building that physically prevents termites from passing through the interior of the heat insulating material that is in close contact with the outer surface of the foundation slab of the building, and from entering the frame and floor installed on the foundation slab. The termite structure of the heat insulating material, the surface of the heat insulating material not to be in close contact with the base slab, from the lower edge which is in close contact with this foundation slab or the discarded concrete constructed below the base slab, at least up to a predetermined height above the ground, An anti-termite structure for buildings, characterized in that a net is stretched and fiber-mixed mortar is applied. 4. A building that physically prevents termites from passing through the inside of a heat insulating material closely attached to an outer surface of a rising portion of a cloth foundation constructed on an outer peripheral portion of the building and invading a shaft and a floor. The termite structure of the above, in a range from the lower edge of the heat insulating material that does not adhere to the cloth foundation to a predetermined height above the ground from at least the lower edge that adheres to the cloth foundation,
A termite-proof structure for buildings, characterized in that a lath net is stretched and fiber-mixed mortar is applied. 5. The termite structure for a building according to claim 1, wherein the lath net and the fiber-containing mortar are stretched and applied to at least an area up to an upper edge of the heat insulating material. . 6. The termite structure according to claim 1, wherein the fibers of the fiber-containing mortar are polypropylene. 7. The termite structure according to claim 1, wherein the lath net is made of a corrosion-resistant material that is resistant to termite secretions. 8. The termite protection of a building according to claim 7, wherein the mesh of the lath net has a dimension not more than twice as large as a maximum dimension in a cross section of the head of the termite in at least one direction. Construction.