JP2004232454A - Termite preventive structure for building and its building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a termite preventive structure for a building which is easy to be constructed, and its building. <P>SOLUTION: The termite-preventive structure for the building A prevents termites 7 from passing a joint section 6 between rising sections 2, 3 of a continuous footing (foundation) 1 for the building A and moistureproof concrete (concrete body) 5 built on the ground 4 under the floor of the building A and also from intruding beneath the floor 8. The joint section 6 is blocked with a termite-preventive sealing material 9 composed of a sealing material of viscoelasticity without eating-damage resistance against the termites 7, over which particles of high hardness having resistance against secretion by the termites 7 and also eating-damage resistance against the termites 7 are dispersed in such a way that spaces among the particles are less than 1.5 times of the maximum linear dimension of the cross section of the termite's head 7a. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a termite-preventing structure of a building for preventing termites from entering under the floor of the building, and to the building.

Conventional techniques of this type include termite intrusion, which blocks the path of termite invasion from the basement floor of a building with a fabric foundation structure to the building structure through a wall dovetail or a clearance dovetail of the underfloor structure. A method for preventing, by forming an ant-inhibiting layer formed by filling and partitioning an intrusion-inhibiting material made of a non-edible and termite-resistant viscous substance into a clearance opening or an intrusion area of the intrusion path, There is known a termite intrusion prevention method for preventing termite intrusion (see, for example, Patent Document 1). In addition, a termite-proof sealing material or the like obtained by mixing a non-edible, termite-resistant reinforcing aggregate or the like with the viscous substance is also known (for example, see Patent Document 1).
JP-A-2002-61310 (Claims 1, Claims 11, Claims 17, paragraph [0029], paragraph [0041], paragraph [0043], paragraph [0044])

  However, as a viscous substance used in the termite intrusion prevention method or the termite sealing material as described above, one having termite resistance has not been found, and it is extremely difficult to implement these intrusion prevention methods and termite sealing materials. There is a problem that is.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a termite structure for a building and a building that can be easily implemented.

  To achieve the above object, the termite structure of a building according to claim 1, wherein the termites pass through a joint between a rising portion of a foundation of the building and a concrete body constructed on a floor base of the building. A termite-preventing structure for a building that prevents penetration under the floor of a building, wherein a viscoelastic sealing material that does not have corrosion resistance to the termites is resistant to secretions of the termites and has corrosion resistance to the termites. The joint portion is closed with a termite-resistant sealing material in which high-hardness particles having the following formulas are dispersed so that the distance between the particles is 1.5 times or less the maximum linear dimension of the cross section of the head of the termite.

  In the termite prevention structure of a building according to claim 2, the rising portion and the concrete body abut on the joint portion (meaning "contact by a surface or a line when two or more members are in contact with each other"). The same applies hereinafter.)

  The structure for preventing termites in a building according to claim 3, wherein the termites prevent the termites from passing through a joint between concrete bodies constructed adjacently on a floor basement of the building and entering under the floor of the building. A termite structure, a viscoelastic sealing material that does not have corrosion resistance to the termites, and has high hardness particles that are resistant to the secretions of the termites and have corrosion resistance to the termites. The joint portion is closed with a termite-proof sealing material dispersed so as to be 1.5 times or less the maximum linear dimension of the cross section of the head.

  In the termite-controlling structure for a building according to claim 4, the concrete bodies are in contact with each other at the joint.

  In the termite structure for protecting a building according to claim 5, the joint portion is a gap.

  The termite structure of a building according to claim 6 is provided with a cutout portion extending along the joint portion at an upper edge of the concrete body facing the joint portion.

  The termite-proof structure of a building according to claim 7, wherein termites pass through a seam between a concrete body constructed on a floor basement of the building and a pipe penetrating the concrete body and enter under the floor of the building. A termite-proof structure of a building, in which viscoelastic sealing material having no corrosion resistance to the termites is provided with high hardness particles resistant to the secretions of the termites and having corrosion resistance to the termites. The seams are closed with a termite sealing material dispersed so as to be 1.5 times or less the maximum linear dimension of the termite head cross section.

  According to the termite structure of a building of claim 8, the concrete body and the pipe are in contact with each other at the joint.

  In the ant termite structure according to claim 9, the seam is a gap.

  In a tenth aspect of the present invention, the concrete structure has a notch extending along the seam at an upper edge of the concrete body facing the seam.

  In the termite-controlling structure of a building according to claim 11, the interval between the hard particles in the termite-proofing sealing material is １ ／ or less of the maximum linear dimension.

  In the termite structure of the twelfth aspect, the volume ratio of the hard particles in the termite sealing material is 30 to 60%.

  In the termite-controlling structure for a building according to the thirteenth aspect, the particle size of the high-hardness particles [means “particle size (maximum linear dimension)”. same as below. ] Is smaller than 1680 μm (meaning “the particle size of all the particles is smaller than 1680 μm”; the same applies hereinafter), and the largest particle size (“particles occupying the largest mass percentage in the particle size distribution expressed by mass percentage”). The same applies hereinafter.) Is larger than 140 μm and smaller than 1190 μm.

  In the termite structure of a building according to claim 14, the high hardness particles are silica sand.

  In the termite structure for protecting a building according to claim 15, the viscoelastic sealing material is a modified silicone sealing material.

  According to a sixteenth aspect of the present invention, there is provided a building having a termite structure according to any one of the first to fifteenth aspects.

  According to the first, third, seventh, and sixteenth aspects of the present invention, the termites pass through the joint or seam because the joint or seam is closed by the termite-sealing material. It can be prevented from penetrating under the floor, and the building frame and the floor frame can be protected from termite damage. In addition, as the viscoelastic sealing material contained in the termite sealing material, a material that does not have corrosion resistance to termites can be used, so that the termite sealing material can be easily prepared and the termites can be prevented from penetrating under the floor. The termite structure of a building to be prevented and a building having the termite structure can be easily implemented. Furthermore, since the termite-proof sealing material has viscoelasticity, even if the concrete body or the rising portion expands or contracts, it can follow the expansion or contraction without breaking or peeling.

  According to the sixth, tenth, and sixteenth aspects of the invention, since the notch extending along the joint or the joint is provided at the upper edge of the concrete body facing the joint or the joint, Even when the viscosity of the termite-proofing sealant is low (high fluidity), the termite-proofing sealant accumulates in the notch, and even if a large amount of termite-proofing sealing material is filled in the joint or seam, the termite-proofing sealant is moisture-proof concrete Does not flow up. For this reason, the joint portion or the seam can be reliably sealed. In addition, even when it takes time for the termite-sealing material to flow down the joint or seam, a large amount of termite-sealing material can be filled, so that the seal is not broken and the workability is good. is there.

  According to the inventions of claims 2, 4, 8, and 16, the rising portion and the concrete body at the joint, the concrete bodies at the joint, or the concrete body and the pipe at the seam. Because of the contact, the termite-sealing material can be easily applied to the upper or inner part of the joint, the upper part of the joint, or the like.

  According to the fifth, ninth, and sixteenth aspects of the present invention, since the joint portion or the joint is a gap, the termite-proof sealing material can be easily filled in the joint portion or the joint.

  According to the eleventh and sixteenth aspects of the present invention, the interval between the hard particles in the termite-sealing material is not more than 1/2 of the maximum linear dimension, so that the termites pass under the floor through the joint. Can be reliably prevented.

  According to the twelfth and sixteenth aspects of the invention, the volume ratio of the high hardness particles in the termite-proof sealing material is 30 to 60%, and the termite-proof sealing material has an appropriate viscosity (fluidity), kneading property, and adhesion strength. Since an ant sealing material can be prepared, workability can be improved.

  According to the invention of Claims 13 and 16, the particle size of the high hardness particles is smaller than 1680 μm and the largest particle size is larger than 140 μm and smaller than 1190 μm, so that appropriate viscosity (fluidity), kneading property, In addition, a termite sealing material having an adhesive strength can be prepared, so that workability can be improved. Further, the high hardness particles in the termite-proof sealing material are not easily peeled off from the viscoelastic sealing material by termites.

  According to the fourteenth and sixteenth aspects of the present invention, since the high hardness particles are inexpensive silica sand, the cost of the termite sealing material can be reduced.

  According to the invention of claims 15 and 16, since the viscoelastic sealing material is a modified silicone sealing material, the adhesive strength of the termite-proof sealing material to concrete or the like can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The termite structure of the building A according to the first embodiment includes, for example, as shown in FIGS. 1 to 3, the rising portions 2 and 3 of the cloth foundation (foundation) 1 of the building A and the floor base 4 of the building A. 4 to prevent the termites 7 as shown in FIG. 4 from passing through the joint 6 with the moisture-proof concrete (concrete body) 5 and entering the underfloor 8 of the building A. The joint portion 6 is closed (sealed) by filling the joint portion 9 with 9.

  As shown in FIGS. 1 and 2, the cloth foundation 1 is installed on the outer peripheral portion of the building A and on the inner side thereof, and the rising portion 2 and the base portion 10 on the outer peripheral portion, or the inner rising portion 3 and The cross section from the base portion 10 is formed, for example, in an inverted T shape. The crushed stone layer 11 and the like as in this embodiment can be installed under the base portion 10.

  The moisture-proof concrete 5 is installed on the floor base 4 of the building A. A wire mesh or a reinforcing bar may be buried inside the moisture-proof concrete 5. In addition, a moisture-proof sheet or the like can be laid between the moisture-proof concrete 5 and the floor base 4. The concrete body is not limited to the moisture-proof concrete 5, but may be, for example, earth concrete (soil floor) or a solid foundation slab described later. Further, in this embodiment, the moisture-proof concrete 5 is installed at a low position so that the underfloor 8 is a space under the floor, but the present invention is not limited to this. A concrete body may be constructed at a higher position with an embankment or a crushed gravel interposed therebetween so that the underfloor 8 does not become an underfloor space.

  As shown in FIG. 1 to FIG. 3, the joint portion 6 is a rising portion 2 due to expansion and contraction (meaning “expansion / shrinkage due to drying / shrinking and temperature change” after the casting of the moisture-proof concrete 5; the same applies hereinafter). , 3 and the moisture-proof concrete 5, and the joint 6 is filled with a termite-proof sealing material 9. Note that the joint portion 6 as a gap may be formed in advance using a formwork, joint material or the like before placing a concrete body such as the moisture-proof concrete 5.

  Termite 7 is an imperfect metamorphic insect living in a social life related to cockroaches, and is a generic term for the termite (Isoptera) Isoptera. As shown in FIG. 4, the termite 7 has a non-deformable hard head 7a, while having a relatively soft and weak body 7b. Examples of such termites 7 include Yamato termites and house termites.

  The termite sealing material 9 is composed of a viscoelastic sealing material having no corrosion resistance to the termites 7 and high hardness particles resistant to the secretions of the termites 7 and having a corrosion resistance to the termites 7. Are dispersed so as to be 1.5 times (1.5H) or less the maximum linear dimension H of the cross section of the head 7a.

  The viscoelastic sealing material is a viscoelastic sealing material having an adhesion (adhesion) force to concrete or the like and a property of following the expansion and contraction of concrete, and does not have corrosion resistance (termite resistance) to termites 7. is there. Here, "having no corrosion resistance (ant resistance)" means that the through-hole (ant canal) can be formed by termites 7 breaking down (biting). As such a viscoelastic sealing material, various sealing materials such as silicone, modified silicone, polyurethane, polysulfide, acrylic urethane, acrylic, butyl rubber, and oil can be used. Among these, when the modified silicone-based sealing material is used, there is an advantage that the adhesion strength of the termite-proof sealing material 9 to concrete or the like can be improved.

  As the polymer (curable composition) contained in the modified silicone-based sealing material, at least one silicon atom-containing group containing a hydroxyl group or a hydrolyzable group and capable of forming a siloxane bond (reactive group) An oxyalkylene polymer having a silicon group) is preferred. The oxyalkylene polymer may be linear or branched, or may be a mixture of a linear and a branched product. Further, the oxyalkylene polymer is preferably obtained by introducing the silicon atom-containing group into an oxyalkylene polymer having a functional group.

  The oxyalkylene polymer having a functional group can be obtained by polymerizing an alkylene oxide in the presence of an alkali metal hydroxide using an active hydrogen compound such as a polyol as an initiator. In this method, an oxyalkylene polymer having a hydroxyl group at a terminal can be obtained. Also, zinc hexes described in JP-B-46-27250, JP-B-59-15336, JP-A-3-72527, JP-A-11-60723, and JP-A-11-60724, etc. An oxyalkylene polymer having a hydroxyl group at a terminal can also be obtained by polymerizing an alkylene oxide using a double metal cyanide complex such as cyanocobaltate or phosphazene as a polymerization catalyst and an active hydrogen compound such as a polyol as an initiator.

  The oxyalkylene polymer having a silicon atom-containing group may contain a monomer unit other than the oxyalkylene monomer unit, but the oxyalkylene monomer unit is 50% by weight or more. Preferably, it is present in an amount of 80% by weight or more.

  Further, the oxyalkylene polymer having a silicon atom-containing group has an Mw / Mn [molecular weight distribution (ratio of weight average molecular weight Mw to number average molecular weight Mn)] of less than 1.60, further preferably 1.50 or less, particularly When the viscosity is as low as 1.40 or less, the viscosity is lower than that of a polymer having the same molecular weight, so that when used as a sealing material, an adhesive, or the like, workability such as extrudability and coatability is improved. On the other hand, when Mw / Mn is 1.60 or more, further 1.71 or more, 1.73 or more, 1.75 or more, particularly 1.80 or more, a polymer having the same molecular weight as the cured product having the same breaking strength. Improved than the cured product of Furthermore, if the oxyalkylene polymer having a silicon atom-containing group is polymerized using a double metal cyanide complex catalyst, there is an advantage that the cured product has excellent chemical resistance such as acid resistance.

  The high hardness particles are high hardness particles having a durometer (Shore D) hardness of 50 or more, are resistant to secretions of the termites 7 such as formic acid, and are corrosion-resistant that the termites 7 cannot chew. Examples of such high hardness particles include synthesis of ceramic particles such as silica sand, glass beads, aluminum oxide (alumina) particles, titanium oxide (titania) particles, acrylic resin particles, polycarbonate particles, polyamide particles, hard vinyl chloride resin particles, and the like. Metal particles such as resin particles and steel particles are exemplified. Among them, when silica sand is used, it is inexpensive, so that there is an advantage that the cost of the termite sealing material 9 can be reduced. Further, the shape of the high hardness particles is not particularly limited, and various shapes such as irregular, spherical, and hollow shapes can be adopted.

  The high-hardness particles are dispersed in the viscoelastic sealing material such that the distance between the particles is 1.5 times or less the maximum linear dimension H of the cross section of the head 7a of the termite 7. The maximum linear dimension H is about 1.1 to 1.25 mm for house termite workers and about 1.0 to 1.2 mm for house termite workers. In order to reliably prevent intrusion into the underfloor 8, the distance between the high-hardness particles is about 1.5 mm or less, preferably about 1.3 mm or less, more preferably about 1.0 mm or less, and still more preferably about 0.5 mm. It is desirable to keep the following.

  The termite-proof sealing material 9 configured as described above is put in a container having a nozzle for the sealing material, and filled into the joint portion 6 using a filling gun or the like for filling the sealing material with the container attached. It should be equal. Alternatively, the termite-proof sealing material 9 may be sealed in a tube, and one end or the like of the tube may be cut and squeezed, and the termite-sealing material 9 may be applied with a spatula or the like. Prior to filling or the like, an appropriate primer or the like may be applied in advance to necessary places. In this embodiment, the termite-proof sealing material 9 is filled over the entirety of the joint portion 6 in the vertical direction. However, the present invention is not limited to this. May be filled only partially. In addition, when the viscosity of the termite sealing material 9 is relatively high (the fluidity is relatively low), as shown in FIG. Further, the termite-proof sealing material 9 is applied to the rising portions 2 and 3 before the concrete body such as the moisture-proof concrete 5 is cast, or until the concrete body or the like expands and contracts as shown in FIG. It can also be applied to the upper part of the joint portion 6. That is, if the rising portions 2 and 3 and the concrete body are in contact with each other at the joint portion 6, there is an advantage that the termite-proof sealing material 9 can be easily applied to the upper portion of the joint portion 6 or the like. Further, if the joint 6 is a gap as shown in FIGS. 3 and 5, there is an advantage that the termite-proof sealing material 9 can be easily filled in the joint 6. In any case, since the termite-proof sealing material 9 has viscoelasticity, even when the concrete body and the rising portions 2 and 3 expand and contract, they can follow the expansion and contraction without breaking or peeling.

  In this way, if the connecting portion 6 between the rising portions 2 and 3 and the moisture-proof concrete 5 is closed with the termite-proof sealing material 9, even if the termites 7 try to break through the termite-proof sealing material 9, the height is high. Since the interval between the hard particles is 1.5 times or less the maximum linear dimension H, the termites 7 cannot pass through between the high hardness particles or dislike passing through. Therefore, it is possible to prevent the termites 7 from passing from the base floor 4 to the underfloor 8 through the connecting portion 6 and to protect the frame B and the floor set C of the building A from the damage by the termites 7. In particular, the interval between the high hardness particles in the termite-proof sealing material 9 is 1.3 times (1.3H) or less the maximum linear dimension H, preferably the maximum linear dimension H or less, and more preferably 1/1 / the maximum linear dimension H. It is more effective if it is set to 2 (H / 2) or less. Further, as the viscoelastic sealing material contained in the termite-proofing sealing material 9, a material having no corrosion resistance to the termites 7 can be used, so that the termite-proofing sealing material 9 can be easily prepared and the termites 7 can be placed under the floor 8. There is an advantage that the termite-prevention structure of the building A for preventing intrusion into the building A and the building A having the termite-prevention structure can be easily implemented.

  The high-hardness particles may be mixed in a sufficient amount according to the particle size so that the termite-sealing material 9 is not broken by the termites 7 (so that no through holes are formed). When the volume ratio of the high hardness particles in the dovetail sealing material 9 is 30 to 60%, preferably 30 to 50%, more preferably 35 to 45%, and still more preferably 35 to 40%, a suitable viscosity (fluidity) ), The termite-proof sealing material 9 having kneading property and adhesive strength can be prepared, and thus there is an advantage that workability can be improved.

  Further, when the particle size of the high hardness particles is smaller than 1680 μm, and the largest particle size thereof is preferably larger than 140 μm (more preferably 149 μm) and smaller than 1190 μm, that is, the particle size and the largest particle size of the high hardness particles are: Silica sand No. 4 [420 μm (35 mesh) <particle diameter <1680 μm (10 mesh), 840 μm (20 mesh) <most particle diameter <1190 μm (14 mesh)], silica sand No. 5 [210 μm (65 mesh) <particle diameter <1190 μm (14 mesh), 420 μm (35 mesh) <most particle size <590 μm (28 mesh)>, silica sand 6 [53 μm (270 mesh) <particle size <590 μm (28 mesh), 297 μm (48 mesh) <most particle size <420 μm (35 mesh)] and silica sand No. 7 [particle size <420 μm (35 mesh), 149 μ m (100 mesh) <the largest particle size <210 μm (65 mesh)], the above-mentioned case is also applied to the case where the particle size corresponds to the particle size / the largest particle size of one kind or the particle size / the largest particle size of a mixture of plural kinds. For the same reason, the workability can be improved, and there is an advantage that the high-hardness particles in the termite-proof sealing material 9 are not easily peeled off from the viscoelastic sealing material by the termites 7.

  Here, when the particle size of the high-hardness particles is smaller than 1680 μm and the maximum particle size is larger than 74 μm and 140 μm or less (more preferably 149 μm or less), that is, the particle size and the maximum particle size of the high-hardness particles are Silica sand No. 8 [particle size <297 μm (48 mesh), 53 μm (270 mesh) <most particle size <74 μm (200 mesh)] and silica sand No. 7 (particle size <420 μm (35 mesh), 149 μm (100 mesh) <most The above advantage is also obtained when the particle size is smaller than 210 μm (65 mesh)]. In this case, the largest particle size is preferably larger than 88 μm and 140 μm or less (more preferably 149 μm or less), more preferably. More than 105 μm and 140 μm or less (more preferably 149 μm or less), still more preferably more than 125 μm and 140 μm or less (More preferably 149 μm or less). However, as described above, it is more preferable that 140 μm (more preferably 149 μm) <the largest particle size <1190 μm. On the other hand, when the largest particle size of the high-hardness particles is 74 μm or less, the high-hardness particles in the termite-proof sealing material 9 are easily peeled off from the viscoelastic sealing material by the termites 7. Since it is difficult to make the interval 1.5 times or less the maximum linear dimension H, any of them is not desirable.

  As shown in FIG. 7, the termite structure of the building A according to the second embodiment includes, for example, the upper edge 5 a facing the joint 6 of the moisture-proof concrete 5 and the joint 6 in the first embodiment. A cutout 21 extending along the cutout is provided.

  The notch 21 is provided so that the cross section is, for example, rectangular. The notch 21 is, for example, a rod-shaped or tubular spacer made of wood, synthetic resin, or the like having substantially the same cross-sectional shape as the notch 21 when the concrete body such as the moisture-proof concrete 5 is poured. It can be provided by burying it in a position where it comes into contact with the rising portion 2 (3) and detaching the spacer from the concrete body after the concrete body has hardened. In this case, a release agent may be applied to the surface of the spacer in advance so as to be easily detached from the concrete body.

  The depth, width and the like of the notch 21 are desirably about 10 mm or more so that the termite-proof sealing material 9 can sufficiently accumulate. However, the cross-sectional shape is not particularly limited, and the triangular shape shown in FIG. The fan-shaped shape shown in FIG. 9, the inverted trapezoidal shape shown in FIG. 10, and the triangular cutout portion 21 as shown in FIG. 8 continuous below the inverted trapezoidal cutout portion 21 as shown in FIG. It may be a polygonal shape or the like that is arranged in a rectangular pattern.

  As described above, if the notch 21 is provided in the upper edge 5a facing the joint 6 of the moisture-proof concrete 5, even when the viscosity of the termite-proof sealing material 9 is low (high fluidity), the notch 21 is prevented. Even if the termite sealing material 9 accumulates and the jointing part 6 is filled with a large amount of termite-proofing sealing material 9, the termite-proofing sealing material 9 does not flow out onto the moisture-proof concrete 5, so that the jointing part 6 can be reliably sealed. There are advantages. Further, even when it takes time for the termite-proof sealing material 9 to flow down the joint portion 6, a large amount of the termite-sealing material 9 can be filled in advance, so that the seal is not broken and the workability is good. There is an advantage that is.

  The termite structure of the building A according to the third embodiment is constructed on, for example, a rising portion 32 of a solid foundation (foundation) 31 of the building A and a floor base 4 of the building A, as shown in FIGS. It prevents termites 7 from penetrating into the underfloor 8 of the building A through the joint 36 between the solid foundation 31 and the foundation slab (concrete body) 35, and is the same as in the first embodiment. The joint portion 36 is closed by the termite sealing material 9.

  The solid foundation 31 includes a foundation slab 35 constructed on the floor slab 4 of the building A, and a rising portion 32 erected on an outer peripheral portion of the foundation slab 35. The joining portion 36 is a gap formed between the rising portion 32 and the base slab 35 due to expansion and contraction after the standing portion 32 is cast. For example, the termite-proof sealing material 9 is provided inside the joining portion 36. Is applied. Also in this case, an appropriate primer or the like may be applied in advance to a necessary portion before application. The termite sealing material 9 can also be applied to the outside of the joint 36. Further, the termite-proof sealing material 9 is applied to the base slab 35 before the rising portion 32 is cast, or the joining portion 36 is extended until the rising portion 32 expands and contracts as shown in FIG. It can also be applied inside or outside. That is, if the rising portion 32 and the concrete body such as the foundation slab 35 are in contact with each other at the joint portion 36, there is an advantage that the termite-proof sealing material 9 can be easily applied to the inside of the joint portion 36 or the like. Further, if the joining portion 36 has a gap as shown in FIG. 13, there is an advantage that the termite-proof sealing material 9 can be easily filled in the joining portion 36. In any case, since the termite-proof sealing material 9 has viscoelasticity, even if the rising portion 32 or the concrete body expands and contracts, it can follow the expansion and contraction without breaking or peeling. Furthermore, the joint portion 36 as a gap may be formed in advance using a formwork, joint material, or the like before the installation of the rising portion 32.

  As described above, if the joint portion 36 between the rising portion 32 and the base slab 35 is closed with the termite-proof sealing material 9, the base slab 35 is climbed from the floor base 4 for the same reason as in the first embodiment. It is possible to prevent the termites 7 from entering the underfloor 8 through the joint portion 36 and protect the frame B and the floor C of the building A from the damage by the termites 7. Other advantages are the same as in the first embodiment. As for the termite-proof sealing material 9, the high hardness particles, and the viscoelastic sealing material, the various configurations described above can be adopted.

  The termite structure of the building A according to the fourth embodiment has a joint 46 between the moisture-proof concrete 5 and the pipe 41 penetrating the moisture-proof concrete 5 in the first embodiment, as shown in FIGS. To prevent the termites 7 from passing through and entering the underfloor 8 of the building A, and closing the seam 46 by filling the seam 46 with the same termite-proof sealing material 9 as in the first embodiment. It is.

  The pipe 41 penetrates through the moisture-proof concrete 5 in, for example, the vertical direction. The seam 46 is a gap formed between the pipe 41 and the moisture-proof concrete 5 due to expansion and contraction after casting of the moisture-proof concrete 5. The seam 46 is filled with the termite-proof sealing material 9. In this embodiment, the termite-proof sealing material 9 is filled over the whole of the seam 46 in the vertical direction. However, the present invention is not limited to this, and the seal is not interrupted as in the first embodiment. For example, only a part of the seam 46 may be filled. When the viscosity of the termite sealing material 9 is relatively high (the fluidity is relatively low), as shown in FIG. 17, coating may be performed so as to close the upper part of the seam 46. Further, the concrete body through which the pipe 41 penetrates is not limited to the moisture-proof concrete 5, but may be, for example, the foundation slab 35 of the third embodiment. In addition, the termite-proof sealing material 9 is applied to the pipe 41 before casting the concrete body such as the moisture-proof concrete 5 and the foundation slab 35, or until the concrete body expands and contracts as shown in FIG. It may be applied to the upper part of the joint 46. That is, if the pipe 41 and the concrete body are in contact with each other at the joint 46, there is an advantage that the termite-proof sealing material 9 can be easily applied to the upper part of the joint 46 and the like. If the seam 46 is a gap as shown in FIGS. 16 and 17, there is an advantage that the termite-proof sealing material 9 can be easily filled in the seam 46. In any case, since the termite-proof sealing material 9 has viscoelasticity, even if the concrete body expands and contracts, it can follow the expansion and contraction without breaking or peeling. Further, the seam 46 as a gap may be formed in advance using a formwork, joint material or the like before the concrete body is cast.

  In this way, if the seam 46 between the moisture-proof concrete 5 and the pipe 41 is closed with the termite-sealing material 9, the termites 7 pass through the seam 46 from the floor foundation 4 for the same reason as in the first embodiment. Intrusion into the underfloor 8 can be prevented, and the frame B and the floor C of the building A can be protected from damage by the termites 7. Other advantages are the same as in the first embodiment. The above-described various configurations can also be adopted for the termite-proof sealing material 9, the high hardness particles, and the viscoelastic sealing material.

  As shown in FIG. 19, for example, the termite structure of the building A according to the fifth embodiment includes, in the fourth embodiment, the upper edge 5 a facing the seam 46 of the moisture-proof concrete 5 extending along the seam 46 in the fourth embodiment. A cutout 51 similar to that of the second embodiment is provided.

  The notch 51 is provided such that the cross section is, for example, rectangular. As in the second embodiment, the notch 51 is, for example, a rod-shaped or tubular member made of wood, synthetic resin, or the like having substantially the same cross-sectional shape as the notch 51 when a concrete body such as the moisture-proof concrete 5 is poured. A ring-shaped decomposable spacer in a plan view is embedded at a position corresponding to the upper edge 5a so as to abut the pipe 41, and is provided by detaching the spacer from the concrete body after the concrete body is hardened. be able to. Also in this case, a release agent may be applied to the surface of the spacer in advance so that the spacer is easily detached from the concrete body.

  Thus, if the notch 51 is provided in the upper edge 5a facing the seam 46 of the moisture-proof concrete 5, there is an advantage similar to the second embodiment. Further, the notch portion 51 can employ the various configurations described above.

  As shown in FIG. 20, for example, the termite structure of the building A according to the sixth embodiment includes a joint 66 between the moisture-proof concretes 5 constructed adjacent to the floor base 4 in the first embodiment. This is to prevent the termites 7 from passing into the underfloor 8 of the building A, and to fill the joints 66 with the termite-preventive sealing material 9 similar to that of the first embodiment. It is closed.

  The moisture-proof concrete 5 is placed adjacent to the floor base 4 by being cast in order on the base floor 4. The joint 66 is a gap formed between the moisture-proof concretes 5 due to expansion and contraction of at least one of the moisture-proof concretes 5 after casting. The joint 66 is filled with the termite sealing material 9. Have been. In this embodiment, the termite-proof sealing material 9 is filled over the entirety of the joint portion 66 in the up-down direction. However, the present invention is not limited to this. If there is no interruption, only a part of the joint portion 66 may be filled. Further, when the viscosity of the termite sealing material 9 is relatively high (the fluidity is relatively low), as shown in FIG. 21, application may be performed so as to close the upper part of the joint portion 66. Further, the concrete body is not limited to the moisture-proof concrete 5, but may be, for example, the foundation slab 35 of the third embodiment. In addition, the termite-sealing material 9 is applied to the other concrete body, which has been previously applied, before casting one concrete body to be applied later, such as the one moisture-proof concrete 5 or the like, or Alternatively, as shown in FIG. 22, it may be applied to the upper part of the joint 66 before the concrete body expands and contracts. That is, if the concrete bodies are in contact with each other at the joint portion 66, there is an advantage that the termite-proof sealing material 9 can be easily applied to the upper portion of the joint portion 66 or the like. Further, if the joint 66 is a gap as shown in FIGS. 20 and 21, there is an advantage that the termite-proof sealing material 9 can be easily filled in the joint 66. In any case, since the termite-proof sealing material 9 has viscoelasticity, even if the concrete body expands and contracts, it can follow the expansion and contraction without breaking or peeling. Furthermore, the joint portion 66 as a gap may be formed in advance using a formwork, joint material, or the like before placing a concrete body such as the moisture-proof concrete 5.

  In this way, if the joints 66 between the adjacent moisture-proof concretes 5 are closed with the termite-proof sealing material 9, the termites 7 transfer the joints 66 from the floor foundation 4 for the same reason as in the first embodiment. It can be prevented from passing through and entering the underfloor 8, and the frame B and the floor C of the building A can be protected from damage by the termites 7. Other advantages are the same as in the first embodiment. The above-described various configurations can also be adopted for the termite-proof sealing material 9, the high hardness particles, and the viscoelastic sealing material.

  As shown in FIG. 23, for example, the termite structure of the building A according to the seventh embodiment includes, in the sixth embodiment, an upper edge 5 a facing the joint 66 of one of the moisture-proof concretes 5 to be constructed later. In addition, a notch 71 similar to that of the second embodiment, which extends along the joining portion 66, is provided.

  The notch 71 is provided such that the cross section is, for example, rectangular. The notch 71 can be provided in the same manner as in the second embodiment.

  As described above, if the notch 71 is provided in the upper edge 5a facing the joint 66 of the moisture-proof concrete 5, the same advantage as in the second embodiment can be obtained. In addition, the notch 71 can be provided at the upper edge 5a facing the joint 66 of the other moisture-proof concrete 5, and the various configurations described above can be adopted.

As described above, the technologies of the first to seventh embodiments and their modifications can be applied to an existing building as well as a new building. Further, the joints 6, 36, 66 and the joint 46 may be gaps from the beginning of the building A or may be gaps after aging. Alternatively, the rising portion 2 332 and the concrete body, the concrete bodies or the concrete body and the pipe 41 may be in contact with the joints 6, 36, 66 and the joint 46 from the beginning of the building A. The contact state may be maintained later.
Next, an embodiment of the present invention will be described.

Examples of the viscoelastic sealing material having no corrosion resistance to termites include a sealing material for building [trade name “Hamaite Super One LM”, manufactured by Yokohama Rubber Co., Ltd., modified silicone type, one-component low modulus type, appearance: Paste, specific gravity: 1.41, extrudability: 7 (second, 5 ° C.), maximum tensile stress: 59 (N / cm ² )]. As the high hardness particles, silica sand No. 4 (Example 1) [trade name “Pearl silica sand No. 4”, manufactured by Tokai Ritek Co., Ltd., the highest grade Toki, 420 μm (35 mesh) <particle size <1680 μm (10 mesh), 840 μm (20 mesh) <the largest particle size <1190 μm (14 mesh)]. The volume ratio of the hard particles in the termite sealing material was 40%.

  Specifically, the viscoelastic sealing material and 40% (volume ratio) high-hardness particles were kneaded for 5 minutes to prepare an anti-termite sealing material. The obtained termite-proofing sealing material was subjected to an indoor termite-proofing test (based on the Japan Wood Preservation Association Standard No. 17, penetration prevention performance test, termite species: Yamato termite), and the maximum length of termite-sealing material by termites The thickness (mm) was measured. Table 1 shows the results. Also, the maximum distance (mm) between the high hardness particles was measured from an optical microscope photograph of a cross section of the termite sealing material. The results are also shown in Table 1.

  Silica sand No. 5 (trade name “Pearl silica sand No. 5”, manufactured by Tokai Ritec Co., Ltd., the highest grade Toki, 210 μm (65 mesh) <particle size <1190 μm (14 mesh), 420 μm (35 mesh) <most The same operation as in Example 1 was performed except that the particle size was <590 μm (28 mesh)]. Table 1 shows the results.

  Silica sand No. 6 (trade name "Pearl silica sand No. 6", manufactured by Tokai Ritec Co., Ltd., the highest grade Toki, 53 μm (270 mesh) <particle size <590 μm (28 mesh), 297 μm (48 mesh) <most The same operation as in Example 1 was performed except that the particle size was <420 μm (35 mesh)]. Table 1 shows the results.

  As high hardness particles, silica sand No. 7 [trade name "Pearl silica sand No. 7", manufactured by Tokai Ritec Co., Ltd., the highest grade from Toki, particle size <420 μm (35 mesh), 149 μm (100 mesh) <most particle size <210 μm (65 The same operation as in Example 1 was performed, except that (mesh)) was used. Table 1 shows the results.

[Comparative Example 1]
The maximum length (mm) of the viscoelastic sealing material perforated by a termite was measured in the same manner as in Example 1, except that the high-hardness particles were not dispersed in the same viscoelastic sealing material as in Example 1. Table 2 shows the results.

[Comparative Example 2]
Silica sand No. 3 (trade name "Pearl silica sand No. 3", manufactured by Tokai Ritec Co., Ltd., the highest grade Toki, 590 μm (28 mesh) <particle size, 1190 μm (14 mesh) <most particle size <1680 μm (10 The same operation as in Example 1 was performed except for using (mesh)) (volume ratio of high-hardness particles: 40%). Table 2 shows the results.

  INDUSTRIAL APPLICABILITY The present invention is useful as a termite structure for preventing termites from penetrating below the floor from a floor base of a building, and is particularly suitable for a building termite structure and a building that can be easily implemented.

FIG. 2 is a schematic longitudinal sectional view showing a termite structure at the outer peripheral portion of the building according to the first embodiment. FIG. 2 is a schematic longitudinal sectional view showing an ant-control structure inside the building of FIG. 1. FIG. 3 is an enlarged vertical sectional view of a main part in the vicinity of a joint between a rising portion and a moisture-proof concrete in FIG. 1 or 2. (a) is a plan view of a termite, and (b) is a sectional view taken along line YY of (a). The principal part expanded longitudinal cross-sectional view which shows the example which applied the termite-proof sealing material to the upper part of the joint part. The principal part enlarged longitudinal cross-sectional view which shows the example in which the rising part and the moisture-proof concrete contact | abut in a joint part. The principal part expansion longitudinal cross-sectional view which shows the termite-proof structure in the outer peripheral part or the inside of the building which concerns on 2nd Embodiment. The principal part expanded longitudinal cross-sectional view which shows the other example of a notch part. The principal part expanded longitudinal cross-sectional view which shows the other example of a notch part. The principal part expanded longitudinal cross-sectional view which shows the other example of a notch part. The principal part expanded longitudinal cross-sectional view which shows the other example of a notch part. FIG. 9 is a schematic vertical sectional view showing a termite structure of a building according to a third embodiment. FIG. 13 is an enlarged longitudinal sectional view of a main part in the vicinity of a joint between a rising portion and a foundation slab in FIG. 12. The principal part expansion longitudinal cross-sectional view which shows the example in which the rising part and the foundation slab contact | abut in a joint part. The schematic longitudinal section showing the termite structure of the building concerning a 4th embodiment. FIG. 16 is an enlarged longitudinal sectional view of a main part near a joint between the pipe of FIG. 15 and moisture-proof concrete. The principal part enlarged longitudinal sectional view which shows the example which applied the termite-proof sealing material to the upper part of the seam. The principal part enlarged longitudinal cross-sectional view which shows the example in which the moisture-proof concrete and the pipe | tube abut on the joint. The principal part expansion longitudinal cross-sectional view which shows the termite structure of the building which concerns on 5th Embodiment. The principal part enlarged longitudinal cross-sectional view which shows the termite structure of the building which concerns on 6th Embodiment. The principal part expanded longitudinal cross-sectional view which shows the example which applied the termite-proof sealing material to the upper part of the joint part. The principal part expansion longitudinal cross-sectional view which shows the example in which moisture-proof concrete contacts the joint part. The principal part expansion longitudinal cross-sectional view which shows the termite structure of the building which concerns on 7th Embodiment.

Explanation of reference numerals

A building 1 cloth foundation (foundation)
2,3 Rising part 4 Floor base 5 Moistureproof concrete (concrete body)
5a Upper edge 6 Joint 7 Termite 7a Head 8 Under floor 9 Termite-proof sealing material 21 Notch 31 Solid foundation (foundation)
32 Rising section 35 Foundation slab (concrete body)
36 Joint part 41 Pipe 46 Seam 51 Notch part 66 Joint part 71 Notch part

Claims (16)

A termite-preventing structure for a building, which prevents termites from passing through a joint between a rising portion of a foundation of a building and a concrete body constructed on a floor base of the building and intruding under the floor of the building, ,
The viscoelastic sealing material that does not have corrosion resistance to the termites, the hard particles that are resistant to the secretions of the termites and have the corrosion resistance to the termites are separated from each other by a maximum of the head cross section of the termite. A termite structure for a building, wherein the joint is closed with a termite sealing material dispersed so as to be 1.5 times or less the linear dimension.   The termite structure according to claim 1, wherein the rising portion and the concrete body abut on the joint portion. A termite prevention structure for a building that prevents termites from passing under the floor of the building through a joint between concrete bodies constructed adjacently on a floor basement of the building,
The viscoelastic sealing material that does not have corrosion resistance to the termites, the hard particles that are resistant to the secretions of the termites and have the corrosion resistance to the termites are separated from each other by a maximum of the head cross section of the termite. A termite structure for a building, wherein the joint is closed with a termite sealing material dispersed so as to be 1.5 times or less the linear dimension.   The termite structure for a building according to claim 3, wherein the concrete bodies are in contact with each other at the joint.   The termite structure for a building according to claim 1 or 3, wherein the joint is a gap.   The termite structure according to any one of claims 1 to 5, wherein a notch extending along the joint is provided on an upper edge of the concrete body facing the joint. A concrete structure constructed on a floor basement of a building, and a termite-preventing structure of a building for preventing termites from passing under the floor of the building through seams of pipes penetrating the concrete body,
The viscoelastic sealing material that does not have corrosion resistance to the termites, the hard particles that are resistant to the secretions of the termites and have the corrosion resistance to the termites are separated from each other by a maximum of the head cross section of the termite. An anti-termite structure for a building, wherein the seam is closed with an anti-termite sealing material dispersed so as to be 1.5 times or less the linear dimension.   8. The termite structure for a building according to claim 7, wherein the concrete body and the pipe are in contact with each other at the joint.   The termite structure of a building according to claim 7, wherein the joint is a gap.   The termite structure according to any one of claims 7 to 9, wherein a cutout extending along the seam is provided on an upper edge of the concrete body facing the seam.   The termite structure of a building according to any one of claims 1 to 10, wherein a distance between the hard particles in the termite sealing material is 1/2 or less of the maximum linear dimension.   The termite structure according to any one of claims 1 to 11, wherein a volume ratio of the hard particles in the termite sealing material is 30 to 60%.   The termite structure according to any one of claims 1 to 12, wherein the high-hardness particles have a particle size of less than 1680 µm, and the largest particle size is larger than 140 µm and smaller than 1190 µm.   The termite structure for a building according to any one of claims 1 to 13, wherein the high hardness particles are silica sand.   The termite structure for a building according to any one of claims 1 to 14, wherein the viscoelastic sealing material is a modified silicone sealing material. A building having the termite structure according to any one of claims 1 to 15.

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