JP7787233B2 - Foundations and termite-proof structures - Google Patents

Description

The present invention relates to a foundation and a termite-proof structure for the foundation.

External insulation construction methods, in which insulation is installed on the outer periphery of the foundation (the side opposite the building), have long been known to provide high levels of insulation.

Since insulation installed around the perimeter of the foundation is in contact with the soil, there is a risk that termites may invade the building through the part of the insulation that is in contact with the soil. Therefore, methods have been proposed to protect insulation from termite damage. For example, Patent Document 1 below discloses a method in which a fibrous body is attached to the outside of the insulation and an anti-termite liquid is sprayed onto the fibrous body on-site.

Patent No. 4612962

However, with the method described in Patent Document 1, although the insulation material can be treated to be anti-termite at the time of installation, there is a problem in that the anti-termite properties deteriorate over time.

Therefore, the present invention has been made in consideration of the above circumstances, and provides a foundation and a termite-proof structure for the foundation that can continuously protect the insulation material from termites.

The foundation of the present invention comprises a base portion, an insulating layer arranged on the opposite side of the foundation portion from the building, and a communicating layer arranged on the opposite side of the insulating layer from the foundation portion, the communicating layer having a vertical communicating portion that is connected in the vertical direction and allows the anti-termite chemical liquid to pass through, and the anti-termite chemical liquid that has passed through the communicating layer can reach a position lower than the lower end of the insulating layer .

In a foundation constructed in this manner, the connecting layer, located on the opposite side of the insulation layer from the foundation section, has vertically connected sections that allow the anti-termite liquid to pass through. When anti-termite liquid is injected above the vertical connecting sections of the connecting layer, the liquid travels downward through the vertical connecting sections and reaches the soil, forming a liquid layer below the insulation layer where the anti-termite liquid has soaked into the soil. Therefore, by periodically injecting anti-termite liquid into the vertical connecting sections, the insulation layer (insulation material) can be continuously termite-proofed.
Furthermore, the anti-termite liquid can reach a position lower than the lower end of the heat insulating layer, so that the anti-termite liquid permeates into the soil at a position lower than the lower end of the heat insulating layer, thereby reliably preventing termites from reaching the lower part of the heat insulating layer.

In the foundation according to the present invention, the communicating layer may have a plurality of the vertical communicating portions and horizontal communicating portions that connect the vertical communicating portions to one another.

In a foundation constructed in this way, the connecting layer has horizontal connecting sections that connect multiple vertical connecting sections to each other. This allows the injected anti-termite liquid to pass horizontally through the connecting layer and spread over a wide area.

In the foundation of the present invention, the communication layer may be arranged over substantially the entire length of the insulation layer.

In a foundation constructed in this manner, the communication layer is arranged along almost the entire length of the insulation layer. This allows termite prevention along almost the entire length of the insulation layer.

In the foundation according to the present invention, the insulating layer and the communication layer may be joined together to form an integrated structure.

In a foundation constructed in this way, the insulation layer and the connecting layer are joined together and formed as a single unit. Therefore, the insulation layer and the connecting layer can be easily installed by simply attaching the integrated component to the foundation.

The foundation according to the present invention may also include a fiber layer containing nonwoven fabric on the side of the continuous layer opposite the insulating layer.

In a foundation constructed in this manner, a fiber layer containing nonwoven fabric is placed on the side of the connecting layer opposite the insulating layer. This allows for improved adhesion of mortar when it is applied to the outer periphery of the connecting layer.

The anti-termite structure for a foundation according to the present invention comprises a foundation having a foundation portion, an insulating layer arranged on the opposite side of the foundation portion from the building, and a connecting layer arranged on the opposite side of the insulating layer from the foundation portion, and a chemical solution layer formed below the connecting layer , the connecting layer having a vertical connecting portion that is connected in the vertical direction and allows the anti-termite chemical solution to pass through, and the chemical solution layer contains the anti-termite chemical solution that has passed through the vertical connecting portion.

In a termite-proof foundation structure constructed in this way, the connecting layer, located on the opposite side of the insulation layer from the foundation section, has vertically connected sections that allow the anti-termite liquid to pass through. When anti-termite liquid is injected above the vertical connecting sections of the connecting layer, the liquid travels downward through the vertical connecting sections and reaches the soil, forming a liquid layer below the insulation layer where the anti-termite liquid has soaked into the soil. Therefore, by periodically injecting anti-termite liquid into the vertical connecting sections, the insulation layer (insulation material) can be continuously termite-proofed.

The anti-termite insulation material of the present invention comprises an insulating layer having a first surface that abuts against the foundation of a building, a continuous layer provided on a second surface of the insulating layer opposite the first surface, and a fiber layer containing nonwoven fabric provided on the continuous layer opposite the insulating layer, the continuous layer having vertical continuous portions that communicate in a direction perpendicular to the thickness direction of the continuous layer and allow the anti-termite chemical solution to pass through.

In anti-termite insulation material configured in this way, the connecting layer located on the opposite side of the insulation layer from the foundation has vertically connected sections that allow the anti-termite chemical solution to pass through. When anti-termite chemical solution is injected above the vertical connecting sections of the connecting layer, the chemical solution travels downward through the vertical connecting sections and reaches the soil, forming a chemical solution layer below the insulation layer where the anti-termite chemical solution has soaked into the soil. Therefore, by periodically injecting anti-termite chemical solution into the vertical connecting sections, the insulation layer (insulation material) can be continuously termite-proofed.

The termite-preventing method for foundations according to the present invention comprises a foundation installation step of installing the above-described foundation, and a termite-preventing liquid injection step of injecting the termite-preventing liquid from above the vertical connecting portion.

In this foundation termite prevention method, when the termite prevention liquid is injected above the vertical connecting sections of the connecting layer during the termite prevention liquid injection process, the termite prevention liquid travels downward through the vertical connecting sections and reaches the soil, forming a liquid layer below the insulation layer where the termite prevention liquid has soaked into the soil. Therefore, by periodically injecting termite prevention liquid into the vertical connecting sections, the insulation layer (insulation material) can be continuously termite-proofed.

According to the foundation and the termite-proof structure for the foundation of the present invention, the insulation material can be continuously kept termite-proof.

1 is a schematic cross-sectional view showing a termite-proof structure for a foundation according to one embodiment of the present invention. 1 is a vertical cross-sectional view of a connecting layer of a termite-proof structure for a foundation according to one embodiment of the present invention. 1 is a diagram showing the configuration of a connecting layer of a termite-proof structure for a foundation according to one embodiment of the present invention. FIG. 1 is a front view showing a test specimen of a termite-proof structure for a foundation according to one embodiment of the present invention. 1 is a cross-sectional view showing a test specimen of a termite-proof structure for a foundation according to one embodiment of the present invention. FIG. 10 is a cross-sectional view showing a test of a termite-proof structure for a foundation according to one embodiment of the present invention. FIG. 10 is a schematic cross-sectional view showing a termite-proof structure for a foundation according to a modified example of one embodiment of the present invention.

A foundation, a termite-proof structure for the foundation, a termite-proof heat insulating material, and a termite-proof method according to one embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view showing a termite-proof structure for a foundation according to one embodiment of the present invention.
The termite-proof foundation structure 100 according to this embodiment shown in Fig. 1 includes a foundation 10 and a chemical solution layer 6. The foundation 10 includes a base portion 1, an anti-termite heat insulating material 2, and a surface layer 5.

The foundation 1 is a structure made of, for example, concrete or reinforced concrete. The lower part of the foundation 1 is buried in soil G. Figure 1 shows the outer periphery of building B, with an exterior wall B1 erected on the foundation 1.

In the following description, the side of building B (the side indicated by X1) will be referred to as the indoor side, and the side opposite building B will be referred to as the outdoor side (the side indicated by X2). The direction connecting the indoor and outdoor sides will be referred to as the indoor-outdoor direction (the direction indicated by X).

The anti-termite insulation material 2 has an insulating layer 20 and a connecting layer 30. The insulating layer 20 is located on the indoor side of the connecting layer 30.

The insulating layer 20 is formed in the shape of a flat plate. The plate surface of the insulating layer 20 faces the indoor/outdoor direction. The insulating layer 20 is made of a resin insulating material such as polystyrene foam, urethane foam, polyethylene foam, or phenol foam.

The surface (first surface) 20b of the insulation layer 20 facing the indoor side abuts the surface (hereinafter referred to as the "outer surface") 1a of the foundation portion 1 facing the outdoors.

The insulating layer 20 is arranged over substantially the entire length of the foundation 1 in the longitudinal direction and substantially the entire length of the foundation 1 in the vertical direction. The longitudinal direction of the foundation 1 is along the horizontal direction and perpendicular to the indoor-outdoor direction. The insulating layer 20 does not have to be arranged over substantially the entire length of the foundation 1 in the longitudinal direction, but may be arranged partially along the longitudinal direction of the foundation 1. The insulating layer 20 does not have to be arranged over substantially the entire length of the foundation 1 in the vertical direction, but may be arranged partially along the vertical direction of the foundation 1. The size and shape of the insulating layer 20 can be set as appropriate, as long as it is arranged in contact with the outer surface 1a of the foundation 1.

The communication layer 30 is located on the opposite side of the insulation layer 20 from the foundation portion 1. In other words, the communication layer 30 is located on the outdoor side of the insulation layer 20. The communication layer 30 is formed in a flat plate shape. The plate surface of the communication layer 30 faces the indoor/outdoor direction. Note that Figure 1 shows the communication layer 30 schematically.

FIG. 2 is a vertical cross-sectional view of the communicating layer 30.
2, the communicating layer 30 has a first surface portion 31, a second surface portion 32, and a main body portion 36. The communicating layer 30 is made of a resin such as polypropylene, vinyl chloride, or polycarbonate.

The first surface portion 31 and the second surface portion 32 are formed in a flat plate shape. The plate surfaces of the first surface portion 31 and the second surface portion 32 face the indoor/outdoor direction. The second surface portion 32 is positioned on the outdoor side of the first surface portion 31 at a distance.

The main body 36 has a flat plate portion 37 and multiple protrusions 38. The flat plate portion 37 is formed in a flat plate shape, with the plate surface facing the indoor/outdoor direction. The flat plate portion 37 abuts against the first surface portion 31. The protrusions 38 protrude from the flat plate portion 37 toward the outdoor side. The tops of the protrusions 38 abut against the second surface portion 32.

FIG. 3 shows the structure of the communication layer 30, as viewed from the outdoor side with the second surface portion 32 removed.
3, the protrusions 38 have a circular shape when viewed from the outdoor side. The protrusions 38 are arranged at intervals in the vertical and horizontal directions (directions along the plate surface of the flat plate portion 37 and perpendicular to the vertical direction).

The convex portions 38 are arranged with a lateral offset between the upper and lower steps. As a result, vertical communication sections 41, which are spaces extending in the vertical direction, are formed between the upper and lower convex portions 38, spaced one step apart. Adjacent vertical communication sections 41 are connected by horizontal communication sections 42, which are spaces extending in the horizontal direction. The vertical communication sections 41 and horizontal communication sections 42 are spaces formed between the first surface section 31 and the second surface section 32. The vertical communication sections 41 and horizontal communication sections 42 are connected in a direction perpendicular to the thickness direction (indoor-outdoor direction) of the connecting layer 30. In this embodiment, multiple convex portions 38 are formed in the connecting layer 30, thereby forming vertical communication sections 41 and horizontal communication sections 42 between the multiple convex portions 38. However, the internal configuration of the connecting layer 30 can be configured as desired.

At least one of the vertical communicating section 41 and the horizontal communicating section 42 located at the uppermost side of the communicating layer 30 is open upward. At least one of the vertical communicating section 41 and the horizontal communicating section 42 located at the lowermost side of the communicating layer 30 is open downward. The anti-termite chemical solution S, described below, can pass through the vertical communicating section 41 and the horizontal communicating section 42.

As shown in FIG. 1, the first surface 31 of the communication layer 30 abuts against the surface (second surface) 20a of the insulation layer 20 facing the outdoors. The insulation layer 20 and the communication layer 30 are joined together to form an integral unit.

The communicating layer 30 is arranged over substantially the entire length of the insulating layer 20 in the longitudinal direction and substantially the entire length of the insulating layer 20 in the vertical direction. The communicating layer 30 does not have to be arranged over substantially the entire length of the insulating layer 20 in the vertical direction, but may be arranged partially in the vertical direction of the insulating layer 20. The communicating layer 30 does not have to be arranged over substantially the entire length of the insulating layer 20 in the vertical direction, but may be arranged partially in the vertical direction of the insulating layer 20. The size and shape of the communicating layer 30 can be set as appropriate, as long as it is arranged in contact with the insulating layer 20.

The communicating layer 30 is arranged so that the tops of the convex portions 38 face the outdoors, but this is not limited to this. The communicating layer 30 may also be arranged so that the tops of the convex portions 38 face the indoors.

As shown in Figure 1, the surface layer 5 is provided on the outdoor side of the connecting layer 30. The surface layer 5 has the function of protecting the outdoor side of the connecting layer 30 and is made of mortar or the like. The surface layer 5 only reaches a position higher than the lower end 30d of the connecting layer 30, but may be formed to reach the same height as the lower end 30d of the connecting layer 30.

The connecting layer 30 and the surface layer 5 extend outside beyond the exterior wall section B1. A drip edge C is provided to cover the connecting layer 30 and the surface layer 5.

The anti-termite liquid S can be injected between the first surface 31 and the second surface 32 of the communicating layer 30. The injected anti-termite liquid S moves downward from at least one of the vertical communicating sections 41 and horizontal communicating sections 42, which open upward. As shown by the arrows in Figure 3, when the anti-termite liquid S passes downward through the vertical communicating sections 41, it hits the convex sections 38 and spreads to both the left and right sides (in the lengthwise direction of the communicating layer 30) through the horizontal communicating sections 42, following the upper surfaces of the convex sections 38. It passes through the vertical communicating sections 41 and the horizontal communicating sections 42 repeatedly, spreading to both the left and right sides as it moves downward.

As shown in FIG. 1, the anti-termite chemical solution S that passes through the vertical communicating portions 41 and horizontal communicating portions 42 of the communicating layer 30 permeates into the soil G. The chemical solution layer 6 is the anti-termite chemical solution S that has permeated into the soil G. The chemical solution layer 6 reaches a position lower than the lower end 30d of the communicating layer 30. The chemical solution layer 6 extends below the communicating layer 30 and the insulating layer 20.

Any agent capable of controlling termites can be appropriately selected as the anti-termite solution S. As the anti-termite solution S, it is preferable to use a spreading anti-termite agent.
Next, we will explain the use of a termite control agent for termite control. Here, a termite control agent is an agent that uses the termites' behavior, such as grooming, to spread the agent from one termite to another, thereby exterminating as many termites as possible.
As the insecticide used in this embodiment, a non-repellent, slow-acting agent that can be expected to have a propagation effect can be used, as shown below.

Metadiamide compounds: brofuranilide Neonicotinoid compounds: imidacloprid, clothianidin, nitenpyram, acetamiprid, thiamethoxam, thiacloprid, dinotefuran Pyrrole compounds: chlorfenapyr Phenylpyrazole compounds: acetoprole, ethiprole, fipronil, vaniliprole, pyriprole, pyrafluprole, TI-809
Insect growth regulators such as juvenile hormone-like substances and chitin synthesis inhibitors: pyriproxyfen, methoprene, hydroprene, fenoxycarb, diflubenzuron, teflubenzuron, flufenoxuron, bistrifluron, hexaflumuron, triflumuron, novaluron, chlorfluazuron, lufenunone, noviflumuron buprofezin, exazol, cyromazine Anthranilamide compounds: chlorantraniliprole Oxadiazine compounds: indoxacarb Nereistoxin compounds: cartap, bensultap, thiocyclam, monosultap, bisultap Mesoionic compounds: dichloromezothiazol Boron compounds: boric acid, borax Others: hydramethylnon, sulfuramide, etc.

Examples of formulations include emulsifiable concentrates, emulsions, microemulsions, flowables, wettable powders, water-soluble powders, and suspensions, but depending on the drug, it may be more effective to use formulations that are even more non-repellent and have a slower effect using formulation techniques such as microencapsulation.

Furthermore, insecticides that are not non-repellent or slow-acting can also be used as active ingredients if they can be made into formulations with transmission effects using formulation techniques such as microencapsulation, including organophosphorus compounds, pyrethroid-like and pyrethroid compounds, and carbamate compounds. When microencapsulated, the formulation becomes a suspension, etc.
Other insecticides are listed below by type.

Organophosphorus compounds: propetamphos, acephate, aluminum phosphide, butathiophos, cadsafos, chlorethoxyphos, chlorfenvinphos, chlorpyrifos, chlorpyrifos-methyl, cyanophos, diazinon, DCIP, diclofenthion, dichlorvos, dimethoate, dimethylvinphos, disulfoton, EPN, ethion, ethoprophos, etrimphos, fenthion, fenitrothion, fosthiazate, formothion, hydrogen phosphide, Isofenphos, isoxathion, malathion, mesulfenphos, methidathion, monocrotophos, naled, oxydeprophos, parathion, phosalone, phosmet, pirimiphos-methyl, pyridaphenthion, quinalphos, phenthoate, profenofos, propafos, prothiofos, pyraclofos, salithion, sulprofos, tebupirimfos, temephos, tetrachlorvinphos, terbufos, thiometon, trichlorfon, vamidothion, phoxim

Pyrethroid-like and pyrethroid-based compounds: etofenprox, silafluofen, permethrin, acrinathrin, allethrin, benfluthrin, beta-cyfluthrin, bifenthrin, cycloprothrin, cyfluthrin, cyhalothrin, cypermethrin, dimefluthrin, deltamethrin, esfenvalerate, fenpropathrin, fenvalerate, flucythrinate, flufenprox, flumethrin, fluvalinate, halfenprox, imiprothrin, metoflutothrin, prallethrin, profluthrin, pyrethrins, resmethrin, sigma-cypermethrin, tefluthrin, tralomethrin

Carbamate compounds: fenobucarb, alanycarb, bendiocarb, benfuracarb, carbaryl, carbofuran, carbosulfan, cloethocarb, ethiofencarb, fenothiocarb, fenoxycarb, furathiocarb, isoprocarb, metolcarb, methomyl, methiocarb, NAC, oxamyl, pirimicarb, propoxur, XMC, thiodicarb, xylylcarb

Dibenzoylhydrazine compounds: chromafenozide, halofenozide, methoxyfenozide, tebufenozide Bacillus thuringiensis toxin compounds: live spores and crystalline toxins produced by Bacillus thuringiensis Tropolone compounds: hinokitiol, α-thujaplicin, γ-thujaplicin, β-dolabrin, and nootcatin Alkylamine acetates: mixed or single alkylamine acetates having 8 to 18 carbon atoms Phthalic acid diamide compounds: flubendiamide Macrolide compounds: abamectin, emamectin, milbemectin, milbemycin oxime, moxidectin, spinosad Triazine compounds: tripropyl isocyanurate Naphthalene compounds: monochloronaphthalene Chlorinated dialkyl ether additive compounds: octachlorodipropyl ether Others: pyridalyl, etc.

Next, a method for preventing termites from entering a foundation will be described.
The foundation installation process is carried out.
A foundation 1 is constructed. An anti-termite insulation material 2 is provided on the outdoor side of the foundation 1. An insulating layer 20 of the anti-termite insulation material 2 is attached to the foundation 1 with an adhesive or the like. A surface layer 5 is provided on the outdoor side of the continuous layer 30 of the anti-termite insulation material 2.

Next, a termite control chemical liquid injection step is carried out.
The tip of the injector D is inserted under the drain C, and the anti-termite liquid chemical S is injected from above the communicating layer 30. The anti-termite liquid chemical S is injected from above into at least one of the vertical communicating section 41 and the horizontal communicating section 42 located at the uppermost part of the communicating layer 30. The anti-termite liquid chemical S spreads to both the left and right sides inside the communicating layer 30 and advances downward. The anti-termite liquid chemical S is injected from above the communicating layer 30 at multiple locations spaced apart in the lengthwise direction of the communicating layer 30. The injection intervals can be set appropriately, such as to about 1 m. When the anti-termite liquid chemical S reaches the soil G, it soaks into the soil G and forms a chemical layer 6.

Termite prevention chemical solution S is injected periodically. The injection interval can be set appropriately, such as every 5 or 10 years.

(Test results)
Next, a test performed on the above-described embodiment will be described.
As shown in Figure 4, soil G is placed at the bottom of case C. Case C is box-shaped and opens upward. A transparent panel P is provided on the front of case C. The anti-termite heat insulating material 2, with the heat insulating layer 20 and the communication layer 30 attached, is placed inside case C. As shown in Figure 5, the anti-termite heat insulating material 2 is aligned with the panel P, and the bottom of the anti-termite heat insulating material 2 is buried in soil G.

Styrofoam (registered trademark) (900mm x 600mm x 50mm) was used for the insulating layer 20. Meitone (900mm x 600mm x 5mm) manufactured by Meiwa Sangyo Co., Ltd. was used for the interconnecting layer 30.

The chemical solution is injected from above the interconnected layer 30 of the anti-termite insulation material 2. As shown in Figure 6, the chemical solution is injected from two points A, each a distance L away from the center of case C. L is 225 mm. The product name of the chemical used is Exguard (registered trademark) HE (manufactured by Mitsui Chemicals Crop & Life Solutions, Inc., active ingredient content 8.73% (fipronil)), the dilution ratio is 150 times, the injection volume is 2.25 L/n, there are two injection locations, and the injection interval (2 L) is 450 mm.

The active ingredient concentrations (ppm) and average concentrations at measurement points (1) to (7) are shown in Table 1. The distance from (1) to (5) is 4L = 900 mm. The distance between (1) and (2) and between (4) and (5) is also L = 225 mm. As shown in Table 1, it can be seen that the active ingredient is diffused evenly throughout (1) to (7).

In the foundation 10, foundation termite-proof structure, termite-proof insulation material 2, and termite prevention method configured in this manner, the communicating layer 30, located on the outdoor side of the insulation layer 20, has vertically communicating vertical passages 41 through which the anti-termite chemical solution S can pass. When the anti-termite chemical solution S is injected above the vertical passages 41 of the communicating layer 30, the anti-termite chemical solution S travels downward through the vertical passages 41 and reaches the soil G, forming a chemical solution layer 6 below the insulation layer 20 in which the anti-termite chemical solution S has soaked into the soil G. Therefore, by periodically injecting the anti-termite chemical solution S into the vertical passages 41, the insulation layer 20 can be continuously termite-proofed.

The communicating layer 30 also has horizontal communicating sections 42 that interconnect the multiple vertical communicating sections 41. This allows the injected anti-termite liquid S to pass through the communicating layer 30 in the lengthwise direction, allowing it to be distributed over a wide area.

In addition, the communication layer 30 is arranged over almost the entire length of the insulation layer 20. This allows termite prevention over almost the entire length of the insulation layer 20.

In addition, the anti-termite liquid chemical S can reach a position lower than the lower end 20d of the insulating layer 20. Therefore, the anti-termite liquid chemical S penetrates into the soil G at a position lower than the lower end 20d of the insulating layer 20, ensuring termite protection of the lower part of the insulating layer 20.

The insulating layer 20 and the connecting layer 30 are joined together to form an integrated anti-termite insulation material 2. Therefore, the anti-termite insulation material 2 can be easily installed by simply attaching it to the foundation 1.

(Modification)
Next, a termite-proof structure for a foundation according to a modified example of one embodiment of the present invention will be described mainly with reference to Fig. 7. In the following description of the modified example, the same reference numerals will be used to designate the same or similar members and parts as those in the above-described embodiment, and a description thereof will be omitted, and only configurations different from the embodiment will be described.

FIG. 7 is a schematic cross-sectional view showing a termite-proof structure for a foundation according to a modified example of one embodiment of the present invention.
As shown in Figure 7, the anti-termite thermal insulation material 2A of the anti-termite structure for foundations 100A according to this modified example includes an insulating layer 20, a continuous layer 30, and a fiber layer 70. The fiber layer 70 is disposed on the opposite side of the continuous layer 30 from the insulating layer 20. In other words, the fiber layer 70 is disposed on the outdoor side of the continuous layer 30. The fiber layer 70 is a member including a nonwoven fabric. The nonwoven fabric is made of a resin such as polypropylene, polyester, polyolefin, or polyethylene.

The anti-termite insulation material 2A is constructed by joining the insulation layer 20, the interconnecting layer 30, and the fiber layer 70 together. A surface layer 5 is provided on the outdoor side of the fiber layer 70.

The foundation termite-proof structure 100A constructed in this manner has vertical communication sections 41 that are connected in the vertical direction and allow the anti-termite chemical solution S to pass through. When the anti-termite chemical solution S is injected into the upper side of the vertical communication section 41 of the communication layer 30, the anti-termite chemical solution S travels downward through the vertical communication section 41 and reaches the soil G, forming a chemical solution layer 6 below the insulation layer 20 where the anti-termite chemical solution S has soaked into the soil G. Therefore, by periodically injecting the anti-termite chemical solution S into the vertical communication section 41, the insulation layer 20 can be continuously termite-proofed.

In addition, a fiber layer 70 containing nonwoven fabric is disposed on the outdoor side of the continuous layer 30. Therefore, when a surface layer 5 is provided on the outdoor side of the continuous layer 30, the adhesiveness of the mortar that constitutes the surface layer 5 can be improved.

Although one embodiment of the present invention has been described above, the technical scope of the present invention is not limited to the above embodiment, and it is possible to change the combination of components, and to make various modifications to or remove components, without departing from the spirit of the present invention. Some modifications are shown below as examples, but these are not all inclusive and other modifications are also possible. Furthermore, two or more of these modifications may be combined as appropriate.

The communicating layer 30 only needs to have vertical communicating portions 41 that communicate in the vertical direction, and does not need to have horizontal communicating portions 42. For example, the communicating layer 30 may have multiple through-holes that penetrate the communicating layer 30 in the vertical direction, spaced apart along its length.

The anti-termite insulation material 2 is formed by joining the insulating layer 20 and the connecting layer 30 together, but this is not limited to this. The insulating layer 20 and the connecting layer 30 may be separate components, and the connecting layer 30 may be attached after the insulating layer 20 is attached to the foundation 1 at the construction site.

1 Foundation portion 2, 2A Anti-termite heat insulating material 6 Chemical solution layer 10 Foundation 20 Heat insulating layer 30 Connecting layer 41 Vertical connecting portion 42 Horizontal connecting portion 70 Fiber layer 100, 100A Anti-termite structure B Building S Anti-termite chemical solution

Claims (6)

The foundation and
a heat insulating layer disposed on the opposite side of the foundation from the building;
a communication layer disposed on the opposite side of the thermal insulation layer from the foundation portion,
The communication layer has a vertical communication portion that communicates in the vertical direction and allows the anti-termite liquid to pass through,
A foundation in which the anti-termite liquid that has passed through the communication layer can reach a position lower than the lower end of the heat insulating layer . The communicating layer is
A plurality of the vertical communication portions;
The foundation according to claim 1 , further comprising a horizontal communicating portion that connects the plurality of vertical communicating portions to each other. A foundation as described in claim 1 or 2, wherein the communication layer is arranged over substantially the entire length of the insulation layer. The foundation described in claim 1 or 2, wherein the insulating layer and the communication layer are joined and formed as a single unit. The foundation described in claim 1 or 2, further comprising a fiber layer containing nonwoven fabric on the side of the continuous layer opposite the insulating layer. The foundation and
a heat insulating layer disposed on the opposite side of the foundation from the building;
a foundation including a communication layer arranged on the opposite side of the foundation portion in the thermal insulation layer ;
a chemical solution layer formed below the communicating layer,
The communication layer has a vertical communication portion that communicates in the vertical direction and allows the anti-termite liquid to pass through,
The termite-proof structure for a foundation, wherein the chemical solution layer contains the termite-proof chemical solution that has passed through the vertical communicating portion.