WO2018235620A1 - Floor structure and its use - Google Patents

Abstract

To provide a floor structure using a tile base that exhibits high anti-vibration performance while compressing the construction period and cost. The floor structure comprises an adhesive layer, a shock absorbing material, an elastic adhesive layer, and a plurality of tiles in order from the bottom, and the shock absorbing material is a foamed polyolefin board having a thickness of 7 mm to 25 mm and a density of 20 kg / m3 to 100 kg / m3. The area of the tile is 80 cm 2 or more and 900 cm 2 or less, and the joint between the plurality of tiles is filled with an elastic joint material.

Description

Floor structure and its use

The present invention relates to a floor structure, a floor structure unit, and a floor structure manufacturing method using a tile base that exhibits anti-vibration performance.

In recent years, in the entrance of apartment buildings such as apartments, floor structures such as elevator halls, people's walking noise such as impact noise generated when the buttocks of shoes such as high heels come in contact with the floor vibrates adjacent dwelling units The noise caused by transmission is a problem. At present, as a countermeasure, a wet floating floor method is widely used, which is a method in which a vibration isolation material such as glass wool, rock wool, polyethylene foam, or a shock absorbing material is placed on a concrete slab and concrete is poured thereon.

For example, in Patent Document 1, a shock absorber is disposed on a floor slab, and a floor portion is disposed on the shock absorber to support the load of the floor portion via the shock absorber. A floating floor structure is described. The said buffer body consists of synthetic resin foam A and synthetic resin foam B from which 5% strain compression strength differs.

Further, Patent Document 2 describes a sound insulation floor structure in which a fired tile in which a foamed synthetic resin material is laminated on the back surface is directly stuck on a floor slab surface via an adhesive such as mortar.

Patent Document 3 discloses a floor panel comprising a laminate of a three-layer structure in which a floor base material, a vibration damping sound insulation sheet and a floor finish are laminated in this order, and at least one layer is bonded by an elastic adhesive. The floor panels being described are described.

Japanese Patent Publication "Japanese Patent Application Laid-Open No. 2003-138739" Japanese Published Patent Publication "JP-A-58-69959" Japanese Patent Publication "Japanese Patent Application Laid-Open No. 11-148185"

However, since the wet floating floor construction method is a construction method in which concrete is poured in to form a floor structure after laying a damping material and a shock absorbing material, there is a problem that the construction period and cost increase.

SUMMARY OF THE INVENTION One aspect of the present invention is made in view of the above problems, and a floor structure, a floor structure unit, and a floor structure using a tile base which exhibits high anti-vibration performance while compressing the construction period and cost. The main purpose is to provide a manufacturing method.

In order to solve the above problems, a floor structure according to an aspect of the present invention is a floor structure in which a tile is laid on a concrete slab via a buffer material, and an adhesive layer, a buffer material, an elastic adhesive layer, And a plurality of tiles in order from the bottom, and the cushioning material is a plate made of foamed polyolefin having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ , and the area of the tile is 80 cm ² or more, The floor space is 900 cm ² or less, and the joint between the plurality of tiles is a floor structure filled with a joint material having elasticity.
In order to solve the above-mentioned subject, a floor structure unit concerning one mode of the present invention is a floor structure unit for laying on a concrete slab, and a plurality of tiles, an elastic adhesive layer, and a shock absorbing material are put in order from the top The cushioning material is a foamed polyolefin board having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ , and the area of the tile is 80 cm ² or more and 900 cm ² or less. The joint between the tiles is characterized in that it is filled with an elastic joint material.
In order to solve the above-mentioned subject, a manufacturing method of a floor structure concerning one mode of the present invention applies an adhesives on a concrete slab, and forms an adhesion layer forming process which forms an adhesion layer, and on the above-mentioned adhesion layer, A buffer material laying step of laying a buffer material, an elastic adhesive layer forming step of applying an elastic adhesive on the buffer material to form an elastic adhesive layer, and a plurality of tiles on the elastic adhesive layer A floor structure manufacturing method comprising a tile laying step of laying and a joint material forming step of forming a joint material by filling a joint between the tiles with a joint material having elasticity, wherein the buffer material is thick. It is a foamed polyolefin board having a size of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ , and the area of the tile is 80 cm ² or more and 900 cm ² or less.
In order to solve the above-mentioned subject, the manufacturing method of the floor structure concerning one mode of the present invention applies the adhesive on the floor slab unit manufacturing process which manufactures a floor floor structure unit, and a concrete slab, and the above floor floor unit And a floor structure unit laying step of laying the floor structure unit, wherein the floor structure unit manufacturing step comprises applying an adhesive having elasticity to form an elastic adhesive layer on the buffer material. An adhesive layer forming step, a tile laying step of laying a plurality of tiles on the elastic adhesive layer, and a joint material forming step of filling the joint between the tiles with an elastic joint material to form a joint material; wherein the said cushioning material has a thickness of 7 mm ~ 25 mm, a polyolefin foam plate made of a density of ^{20kg / m 3 ~ 100kg / m} 3, the area of the tile, 80 cm ² or more, 900 cm ² or less It is characterized in that.

According to the floor structure according to one aspect of the present invention, a plate made of foamed polyolefin having a thickness and a density (foaming magnification) defined on a concrete slab is adhered by an adhesive layer, and elastic adhesion having an elasticity defined thereon Tiles are laid through layers, and joints between multiple tiles are filled with a joint material that defines elasticity. As a result, since the tile is in contact with only the elastic body or only the elastic body and the cushioning material, a floor structure that can effectively reduce the impact noise generated when the heel of the shoe contacts the floor And a floor structure unit, and a manufacturing method of the floor structure can be provided. In addition, since the structure is simple, the construction period and cost can be compressed as compared with a wet floating floor construction method (a construction method in which concrete is poured to form a floor structure).

It is a schematic sectional drawing of the floor structure which concerns on one embodiment of this invention. It is a schematic sectional drawing of the floor structure which concerns on one embodiment of this invention. FIG. 8 is a schematic cross-sectional view of a floor structure according to Comparative Example 2.

Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited to this, and various changes can be made within the described range, and embodiments obtained by appropriately combining technical means respectively disclosed in different embodiments are also possible. Included in the technical scope of In the present specification, unless otherwise specified, “A to B” representing a numerical range means “A or more and B or less”. Also, "mass" and "weight" are considered to be synonymous.

[Floor structure]
In the floor structure according to one aspect of the present invention, a layer made of a shock absorbing material and an elastic adhesive layer having both flexibility and elasticity are provided on a concrete slab, and the tile joint also has flexibility and elasticity. The joint material which combines with is used. Thus, in the floor structure according to one aspect of the present invention, it is possible to reduce the impact noise generated when the heel of the shoe comes in contact with the floor. In addition, since the floor structure according to one aspect of the present invention has a simple structure, the construction period and cost can be compressed as compared with a wet floating floor method (a method of pouring concrete to form a floor structure). .

Each member constituting the floor structure in one embodiment of the present invention will be described below with reference to FIGS. 1 and 2. 1 and 2 are schematic cross-sectional views of a floor structure according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, a floor structure 1 according to an embodiment of the present invention is a floor structure in which a tile 12 is laid on a concrete slab 10 with a buffer material 11 interposed therebetween. A material 11, an elastic adhesive layer 21, and a plurality of tiles 12 are provided in order from the bottom, and joints between the plurality of tiles 12 are filled with a joint material 22 having elasticity. The floor structure 1 further includes other members such as a wire between the concrete slab 10 and the adhesive layer 20 and between the adhesive layer 20 and the buffer material 11 as long as the floor structure 1 includes the respective members in this order. However, it is more preferable that no other member is present. The floor structure 1 is configured to include only the elastic adhesive layer 21 or only the elastic adhesive layer 21 and the cushioning material 11 immediately below the tile 12.

The concrete slab 10 is a floor plate made of concrete which is a base on which a floor structure such as an entrance of an apartment complex such as an apartment and an elevator hall is formed.

[Buffer material]
The buffer material 11 is a tile base which exhibits anti-vibration performance, and is a plate made of foamed polyolefin and having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ . The thickness is more preferably 7 mm to 20 mm. The density is more preferably 20 kg / m ³ to 60 kg / m ³ , and further preferably 30 kg / m ³ to 45 kg / m ³ . The density can be easily changed by changing the expansion ratio of the expanded polyolefin. When the thickness is less than 7 mm, and when the density exceeds 100 kg / m ³ , an impact sound generated when the heel of the shoe contacts the floor (hereinafter simply referred to as “impact sound”) Can not be reduced sufficiently. Moreover, when the said thickness exceeds 25 mm, a floor structure becomes thick too much, and when the density is less than 20 kg / m < ³ >, it is inferior to the durability with respect to a load.

Examples of the foamed polyolefin plate include a foamed polypropylene plate, a foamed polyethylene plate and the like, but from the viewpoint of easy adhesion to the adhesive layer 20 even without surface treatment, It is preferable that it is a board made of polypropylene. The density of the plate made of the foamed polypropylene is more preferably 20 kg / m ³ to 60 kg / m ³ , still more preferably 30 kg / m ³ to 45 kg / m ³ .

Although it does not specifically limit as a manufacturing method of the board made of said expanded polyolefin, For example, the bead foaming method, the extrusion foaming method, the normal pressure foaming method etc. are mentioned, The bead foaming method is more preferable. That is, the foamed polyolefin board is more preferably a beaded foamed polyolefin board.

More preferably, the cushioning material 11 has a displacement of 1 mm or less when a 50 kg load is applied to the area of one tile. Thereby, the feeling of walking on the floor at the time of walking can be secured.

The cushioning material 11 more preferably has a dynamic spring constant of 5 × 10 ⁷ N / m ² · m to 100 × 10 ⁷ N / m ² · m, 10 × 10 ⁷ N / m ² ··· More preferably, m is 80 × 10 ⁷ N / m ² · m. When the dynamic spring constant is 5 × 10 ⁷ N / m ² · m to 100 × 10 ⁷ N / m ² · m, the impact noise can be sufficiently reduced.

The cushioning material 11 is processed into a shape corresponding to the shape of the concrete slab 10 to be laid, and is laid on the concrete slab 10 without a gap. The buffer material 11 may be a single sheet (single layer), or may be a laminate in which a plurality of sheets are stacked.

In addition, on the surface of the board made of foamed polyolefin which is buffer material 11, in order to improve adhesion with adhesion layer 20 and / or elastic adhesion layer 21 and perform adhesion well, adhesion layer 20 and / or elasticity Depending on the type of adhesive constituting the adhesive layer 21, surface treatment such as corona treatment or UV treatment may be performed.

Furthermore, in order to improve the adhesion with the adhesive layer 20 and / or the elastic adhesive layer 21 on the surface of the plate made of foamed polyolefin which is the above-mentioned cushioning material 11 and to perform adhesion satisfactorily, it is fine Unevenness may be formed. Such asperities can be easily formed by forming asperities in a mold for manufacturing a plate made of foamed polyolefin, or pressing a plate after manufacture.

〔tile〕
The material of the tile 12 may be, for example, ceramics such as stone and ceramic, concrete such as concrete and artificial marble, and hard wood, but it is not particularly limited as long as it has excellent durability. The thickness of the tile 12 may be, for example, 5 mm to 30 mm, and more preferably 7 mm to 25 mm, as long as the thickness does not cause breakage by load.

The area of the tile 12 is preferably 80 cm ² to 900 cm ² , and more preferably 80 cm ² to 400 cm ² . By the tile 12 having the above area, the impact noise can be effectively reduced.

The shape of the tile 12 is not limited to a rectangular shape such as a square shape or a rectangular shape, and is a triangular shape, a polygonal shape having a pentagonal shape or more, or a shape having a curved portion such as a circular shape, an elliptical shape or a fan shape It may be shaped. In addition, on the surface of the tile 12, for example, regular shapes such as polygonal shape, circular shape, elliptical shape, stripe shape, lattice shape, etc., as necessary, in order to obtain an anti-slip effect or to give a design. The uneven | corrugated unevenness | corrugation of irregular shape, or the unevenness | corrugation which combined these shapes variously may be formed.

[Adhesive layer]
The adhesive layer 20 is made of an adhesive which can bond the concrete slab 10 and the buffer material 11 and does not adversely affect the properties of the buffer material 11 which is a plate made of foamed polyolefin. Alternatively, the adhesive layer 20 may be an adhesive sheet obtained by applying the above-mentioned adhesive on both sides of the substrate.

Examples of the adhesive to be the adhesive layer 20 include commercially available adhesives such as rubber-based adhesives, modified silicone-based adhesives, urethane-based adhesives, and acrylic-based adhesives. Specifically, examples of the rubber-based adhesive include GP100 (manufactured by Konishi Co., Ltd.). Examples of the modified silicone adhesive include KMP10 (manufactured by Konishi Ltd.) and PM 525 (manufactured by Cemedine Ltd). As a urethane type adhesive agent, SU25 (made by Konishi Co., Ltd.) is mentioned, for example.

The adhesive layer 20 should just be able to adhere the shock absorbing material 11 to the concrete slab 10, and therefore, may be formed on the entire surface of the concrete slab 10, or may be partially formed on the surface. In the case where the adhesive layer 20 is partially formed on the surface of the concrete slab 10, examples of the shape of the individual adhesive layers include shapes such as point, linear, lattice shape, and a combination thereof. There is no particular limitation. However, the adhesive layer 20 is more preferably formed on the entire surface of the concrete slab 10 so that the buffer material 11 can be laid uniformly (horizontally).

The thickness of the adhesive layer 20 is not particularly limited as long as it can sufficiently bond the concrete slab 10 and the shock absorbing material 11, and is preferably 0.1 mm to 5 mm, for example. More preferably, it is 1 mm to 2 mm.

[Elastic adhesive layer]
The elastic adhesive layer 21 is a layer having both flexibility and elasticity, can bond the cushioning material 11 and the tile 12, and does not adversely affect the properties of the cushioning material 11 which is a plate made of foamed polyolefin. It is made of an adhesive having elasticity. The elastic adhesive layer 21 has an elongation at break of 23% or more at 35 ° C. or more, more preferably 50% or more at 23 ° C. in the film physical property test defined in JIS A5557: 2006. When the elongation at break is 35% or more, the elastic adhesive layer 21 has appropriate softness and does not inhibit the shock absorbing material 11 from absorbing the impact force when the heel of the shoe contacts the floor. Therefore, it is possible to obtain a sufficient cushioning effect against impact noise.

Examples of the adhesive to be the elastic adhesive layer 21 include commercially available elastic adhesives such as modified silicone elastic adhesives, urethane elastic adhesives, acrylic elastic adhesives, and epoxy elastic adhesives. Specifically, as modified silicone-based elastic adhesives, for example, Tile Ace F (manufactured by Konishi), Tile Ace Pro (manufactured by Konishi), Tile Ace L Pro (manufactured by Konishi), And Bond Flex Tile One (manufactured by Konishi Co., Ltd.).

The elastic adhesive layer 21 may be partially present between the cushioning material 11 and the tile 12 as shown in FIG. That is, the elastic adhesive layer 21 may be in contact with at least a portion of the surface of the cushioning material 11 and at least a portion of the bottom of the tile 12. As shown in FIG. 2, a part of the surface of the cushioning material 11 may be in contact with a part of the bottom surface of the tile 12. Since the tile is in contact with only the elastic body or only the elastic body and the cushioning material 11, it is possible to effectively reduce the impact noise generated when the heel of the shoe comes in contact with the floor. However, as shown in FIG. 1, the elastic adhesive layer 21 is more preferably formed on the entire surface of the buffer material 11 so that the plurality of tiles 12 can be laid uniformly (horizontally).

The thickness of the elastic adhesive layer 21 may be any thickness as long as the buffer material 11 and the tile 12 can be sufficiently bonded, and is not particularly limited, but preferably 0.1 mm to 5 mm, for example. More preferably, it is 5 mm to 2 mm.

It is preferable that the floor structure 1 is not provided with anything between the cushioning material 11 and the elastic adhesive layer 21 and between the elastic adhesive layer 21 and the tile 12. Moreover, it is preferable that the floor structure 1 is not provided with anything other than the elastic adhesive layer 21 between the cushioning material 11 and the tile 12. This makes it possible to more effectively obtain a sufficient cushioning effect on impact noise.

[Joint material]
The joint material 22 is made of an elastic joint material having flexibility and elasticity and filling the joint between the plurality of tiles 12. The joint material 22 has a stress at 50% elongation of 30 kgf / cm ² or less, more preferably 0.5 kgf / cm ² or more and 20 kgf / cm ² or less in a tensile test specified in JIS A 5758: 2010. When the stress is 30 kgf / cm ² or less, the joint material 22 has appropriate softness to prevent the impact force from propagating to the next tile 12 when the heel of the shoe comes in contact with the tile 12 As a result, it is possible to obtain a sufficient cushioning effect against impact noise.

Examples of the joint material to be the joint material 22 include commercially available elastic joint materials such as a modified silicone-based elastic joint material, a urethane-based elastic joint material, an acrylic elastic joint material, and an epoxy-based elastic joint material. Further, as the joint material to be the joint material 22, an adhesive to be the elastic adhesive layer 21 can also be used. That is, the joint material 22 and the elastic adhesive layer 21 may be composed of the same composition (compound). Specifically, examples of the modified silicone-based elastic joint material include POS seals (manufactured by Cemedine Co., Ltd.) and Multicoke (manufactured by Konishi Co., Ltd.). Examples of the acrylic elastic joint material include acrylic coke (manufactured by Konishi) and EXCEL II (manufactured by Cemedine).

The thickness of the joint material 22 may be set according to the thickness of the tile 12, and is not particularly limited, but is preferably thinner than the thickness of the tile 12 so that the floor structure 1 has a beautiful appearance.

[Method I for manufacturing floor structure]
The manufacturing (construction) method of the floor structure 1 in one Embodiment of this invention comprised by each member mentioned above is demonstrated below.

In the method of manufacturing the floor structure 1 according to the embodiment of the present invention, an adhesive layer is formed on a concrete slab 10 by applying an adhesive to form an adhesive layer 20, and the buffer material 11 is formed on the adhesive layer 20. A buffer material laying step of laying, an elastic adhesive layer forming step of forming an elastic adhesive layer 21 by applying an elastic adhesive on the buffer material 11, and a plurality of tiles 12 on the elastic adhesive layer 21. And a joint material forming step of filling the joint between the tiles 12 with a joint material having elasticity to form the joint material 22.

First, in the adhesive layer forming step, an adhesive is applied to the surface of the hardened concrete slab 10 to form the adhesive layer 20.
Next, in the cushioning material laying step, a plate made of foamed polyolefin which is the cushioning material 11 is laid on the adhesive layer 20. Thereafter, in the elastic adhesive layer forming step, an elastic adhesive is applied on a foamed polyolefin plate to form the elastic adhesive layer 21. Next, in the tile laying process, a plurality of tiles 12 are laid on the elastic adhesive layer 21.

At this time, it is preferable to lay the plurality of tiles 12 on the elastic adhesive layer 21 in such a manner that the intervals between the plurality of tiles 12 are uniform, that is, the sizes of joints are uniform. The width of the joint between the plurality of tiles 12 (joint width) is preferably 3 mm to 5 mm in consideration of the durability of the floor structure 1 and the contact area of the heel portion of the shoe. If the joint width is in the above-mentioned range, a sufficient cushioning effect on impulsive sound can be obtained.

The form of the tiles 12 when laying on the elastic adhesive layer 21 may be individual tiles may be independent of each other, and several tiles have a suitable joint width and, for example, the back side is connected by a net or the like. It may be in the form of a unit. If several tiles are connected in the form of a unit, the laying operation of the tiles 12 can be performed efficiently in a short time.

After laying the tiles 12, in the joint material forming step, joints between the tiles 12 are filled with an elastic joint material to form a joint material 22. Thereby, the floor structure 1 is constructed. Since the floor structure 1 has a simple structure, the construction period and cost can be compressed as compared with a wet floating floor method (a method of pouring concrete to form a floor structure).

The thickness of the floor structure 1 (the total thickness of the adhesive layer 20, the buffer material 11, the elastic adhesive layer 21, and the tile 12) is not particularly limited, but preferably 15 mm to 60 mm, for example 15 mm to 50 mm. It is more preferable that If the thickness exceeds 60 mm, the floor structure 1 becomes too thick.

The floor structure 1 in one embodiment of the present invention preferably has a natural frequency of 300 Hz or less, more preferably 200 Hz or less. Thereby, the floor structure 1 can exhibit high anti-vibration performance.

[Floor structure unit]
A floor structure unit according to an embodiment of the present invention is a floor structure unit for laying on a concrete slab 10, and comprises a plurality of tiles 12, an elastic adhesive layer 21, and a buffer material 11 in order from the top, The joint between the tiles 12 is filled with the joint material 22 having elasticity. After the floor structure unit is manufactured in advance and an adhesive is applied to the surface of the hardened concrete slab 10 in the field to form the adhesive layer 20, a plurality of floor structure units are laid on the adhesive layer 20. Floor structure 1 is constructed by. By using the floor structure unit, the construction period and cost of the floor structure 1 can be further compressed.

It is preferable that the floor structure unit further includes an adhesive layer 20 and a release material downward in this order under the cushioning material. The floor structure unit can be bonded onto the concrete slab 10 by peeling off the release material on site. Thereby, since the effort which apply | coats an adhesive agent to the surface of the concrete slab 10 hardened | cured in the field can be saved, the construction period and cost of the floor structure 1 can further be compressed.

The tile 12, the elastic adhesive layer 21, the cushioning material 11, the joint material 22, and the adhesive layer 20 are as described in the above [floor structure]. The release material is not particularly limited as long as it can prevent the adhesive layer 20 from curing and can be peeled off from the adhesive layer 20. Examples of the release material include paper and films having excellent surface smoothness. By providing the floor structure unit with the release material, storage and transportation can be facilitated while preventing the adhesive layer 20 from curing.

[Method of manufacturing floor structure II]
As described above, in the floor structure 1 according to the embodiment of the present invention, a floor structure unit not provided with the adhesive layer 20 is manufactured in advance, and an adhesive is applied to the surface of the hardened concrete slab 10 at the site. After the adhesive layer 20 is formed, it may be manufactured by laying a plurality of floor structure units on the adhesive layer 20.

That is, in the method of manufacturing the floor structure 1 according to the embodiment of the present invention, a floor structure unit manufacturing step of manufacturing a floor structure unit, and a floor in which an adhesive is applied on the concrete slab 10 to lay the floor structure unit And S. a structural unit laying process. In the method, since the floor structure unit can be prepared in advance at another place such as a factory, the construction period and cost of the floor structure 1 can be further compressed.

In the floor structure unit manufacturing step, an elastic adhesive layer forming step of forming an elastic adhesive layer 21 by applying an elastic adhesive on the buffer material 11, and forming a plurality of tiles 12 on the elastic adhesive layer 21. It includes a tile laying step of laying and a joint material forming step of filling the joint between the tiles 12 with a joint material having elasticity to form the joint material 22. Thereby, the floor structure unit mentioned above can be manufactured.

The elastic adhesive layer forming step, the tile laying step, and the joint material forming step are as described in the above [Method of manufacturing floor structure II].

In the floor structure 1 according to the embodiment of the present invention, a floor structure unit including the adhesive layer 20 and the release material is manufactured in advance, and the release material is peeled off at the site to cure the concrete slab 10. You may manufacture by laying the several floor-structure unit which peeled off the peeling material.

That is, in the method of manufacturing the floor structure 1 according to the embodiment of the present invention, a floor structure unit manufacturing step of manufacturing a floor structure unit, and a peeling material peeling the peeling material provided in the floor structure unit to peel off the adhesive layer 20 And a floor structure unit laying step of laying the floor structure unit in which the adhesive layer 20 is exposed on the concrete slab 10.

In the floor structure unit manufacturing process, in addition to the above-described processes, an adhesive layer forming process of forming an adhesive layer 20 by applying an adhesive on the release material before the elastic adhesive layer forming process; A shock absorbing material laying process of laying a shock absorbing material 11 on the layer 20 may be included, and an adhesive layer forming process of applying an adhesive under the shock absorbing material 11 to form an adhesive layer 20; And a peeling material bonding step of bonding a peeling material under the adhesive layer 20. Thereby, the floor structure unit further provided with the adhesive layer 20 and the peeling material can be manufactured.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

Hereinafter, the present invention will be described in more detail using Examples and Comparative Examples, but the present invention is not limited to these Examples and should not be construed.

[Natural frequency]
A load of 50 kg was applied to the upper surface of one tile constituting the floor structure, an acceleration sensor was attached to the weight, and a 1 kg hammer was dropped from the height of 10 cm to the weight. At this time, the acceleration sensor receives the vibration waveform of the weight on the tile, passes the received data to the FFT analyzer, and measures the natural frequency (Hz), which is an index indicating the anti-vibration performance, from the obtained vibration waveform. did.

Vibration isolation performance
The case where the above natural frequency was 300 Hz or less was judged to be high in the vibration isolation performance and evaluated as "o", and the case where it was larger than 300 Hz was judged as low in the vibration isolation performance and evaluated as "x".

[Dynamic spring constant]
The dynamic spring constant was measured by the tensile test specified in JIS A6322: 1979.

[Displacement amount]
The difference between the displacement of the upper surface of the tile before and after mounting a 50 kg weight was read with a dial gauge to measure the displacement when a 50 kg load was applied to the area of one tile.

Example 1
The floor structure having the structure shown in FIG. 1 by laminating an adhesive layer, a buffer material, an elastic adhesive layer, and a plurality of tiles in order from the bottom on a concrete slab, and filling the joints between the plurality of tiles with the joint material. Was installed.

As an adhesive agent which comprises the said contact bonding layer, the urethane type adhesive agent (Konishi Co., Ltd. product: SU25) was used. The thickness of the adhesive layer was 0.5 mm.

A bead-made plate made of foamed polypropylene (the product made by Kaneka Co., Ltd .: Eperan PP 20 times, having a thickness of 10 mm, a density of 45 kg / m ³ , and a dynamic spring constant of 85 × 10 ⁷ N / m ² · m) A foamed product) was used. The plate had a displacement of 1 mm or less when a load of 50 kg was applied to the area of one tile.

As an adhesive agent which comprises the said elastic adhesive layer, the elastic adhesive agent (made by Cemedine Co., Ltd .: Tile Ace L Pro) was used. The thickness of the elastic adhesive layer was 1 mm.

As the above tile, a tile (size: 92 mm × 92 mm × 8 mm (thickness) and weight 150 g / sheet (manufactured by INAX Co., Ltd .: Max) was used. The joint width between tiles was 3 mm.

As a joint material which comprises the said joint material, the modified silicone type | system | group elastic joint material (Cemedine Co., Ltd. product: POS seal) was used.

The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

Example 2
It is shown in FIG. 1 in the same manner as in Example 1 except that the thickness of the bead method foam polypropylene plate (made by Kaneka Co., Ltd .: Epelan PP 20 times foamed product) which is a buffer material is changed from 10 mm to 25 mm. A floor structure with a structure was constructed.

The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

[Example 3]
1 in the same manner as in Example 1 except that the tile was changed to a tile (size: 295 mm × 295 mm × 9 mm (thickness)) and a weight of 1.8 kg / sheet (manufactured by LIXIL Co., Ltd .: Albergo) The floor structure having the structure shown in FIG.

The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

Example 4
Buffer made of bead method foam polypropylene plate (manufactured by Kaneka Co., Ltd .: Epelan PP 20 times foam product), thickness 10 mm, density 72 kg / m ³ , dynamic spring constant 125 × 10 ⁷ N / m A floor structure having the structure shown in FIG. 1 was constructed in the same manner as in Example 1 except that the ² · m bead method was changed to a plate made of foamed polyethylene (made by Kaneka Co., Ltd .: Epelan XL 13 times foamed product) did.

The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

[Example 5]
It is shown in FIG. 1 in the same manner as in Example 1 except that the density of the plate made of foamed polypropylene as a buffer material is changed to 20 kg / m ³ (manufactured by Kaneka Co., Ltd .: Epelan PP 45 times foamed product). A floor structure with a structure was constructed.

The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

Comparative Example 1
A floor structure was constructed in the same manner as in Example 1 except that a mortar having no elasticity was used instead of the elastic adhesive layer. The thickness of the mortar was 10 mm.

The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

Comparative Example 2
The floor structure having the structure shown in FIG. 2 was constructed. That is, on the concrete slab 10, the adhesive layer 20, the buffer material 11, the elastic adhesive layer 21, the calcium silicate plate 13, the elastic adhesive layer 21, and the plurality of tiles 12 are laminated in order from the bottom, and between the plurality of tiles 12 By filling the joint with the joint material 22, a floor structure having a structure shown in FIG. 2 was constructed.

As an adhesive agent which comprises the said contact bonding layer 20, the urethane type adhesive agent (Cemedine Co., Ltd. product: UM600) used in Example 1 was used. The thickness of the adhesive layer was 1 mm.

As the said buffer material 11, the board (The Kaneka Co., Ltd. product: Epelan PP 30 times foam goods) made from the bead method foaming polypropylene used in Example 2 was used.

As an adhesive constituting the elastic adhesive layer 21, the elastic adhesive used in Example 1 (Cemedine Co., Ltd. product: Tile Ace L Pro) was used. The thickness of the elastic adhesive layer 21 was 1 mm.

As said calcium-silicate board 13, the calcium-silicate board (The Nichias Co., Ltd. product: Ecolux) with a thickness of 5 mm was used.

As the tile 12, the tile used in Example 1 (manufactured by INAX Corporation: Max) was used. The joint width between the tiles 12 was 3 mm.

As a joint material which comprises the said joint material 22, the elastic adhesive (The Cemedine Co., Ltd. product: tile ace L Pro) used in Example 1 was used.

Therefore, the floor structure of this comparative example is configured to further have a calcium silicate plate in addition to the floor structures of Examples 1 and 2. The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

Comparative Example 3
A floor was prepared in the same manner as Example 1, except that the size was 400 mm × 400 mm × 8 mm (thickness) and the weight was 1.3 kg / sheet of a caikale plate (manufactured by Nichias Co., Ltd .: Ecolux). I constructed the structure.

The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

Comparative Example 4
Buffer made of bead method foam polypropylene plate (manufactured by Kaneka Co., Ltd .: Epelan PP 20 times foamed product), thickness 10 mm, density 100 kg / m ³ , dynamic spring constant 312 × 10 ⁷ N / m ² The floor method having the structure shown in FIG. 1 was constructed in the same manner as in Example 1 except that the bead method of polystyrene foam was changed to a plate made of expanded polystyrene (manufactured by Kaneka Co., Ltd .: Kanepal YD 10 times foamed product). .

The natural frequency (Hz) of the floor structure was measured to evaluate the vibration damping performance. The results are shown in Table 1.

As is clear from the results of Table 1, it was found that according to one aspect of the present invention, it is possible to provide a floor structure capable of effectively reducing impact noise.

[Summary]
In order to solve the above problems, a floor structure according to an aspect of the present invention is a floor structure in which a tile is laid on a concrete slab via a buffer material, and an adhesive layer, a buffer material, an elastic adhesive layer, And a plurality of tiles in order from the bottom, and the cushioning material is a plate made of foamed polyolefin having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ , and the area of the tile is 80 cm ² or more, It has a size of 900 cm ² or less, and is characterized in that the joint between the plurality of tiles is filled with an elastic joint material.

In the floor structure according to one aspect of the present invention, the elastic adhesive layer preferably has an elongation at break of 35% or more at 23 ° C. in the film physical property test defined in JIS A5557: 2006.

In the floor structure according to one aspect of the present invention, the joint material more preferably has a stress at 50% elongation of 30 kgf / cm ² or less in a tensile test defined in JIS A 5758: 2010.

In the floor structure according to one aspect of the present invention, the cushioning material more preferably has a displacement of 1 mm or less when a load of 50 kg is applied to the area of one tile.

As for the floor structure concerning one mode of the present invention, it is more preferred that the board made of the above-mentioned foaming polyolefin is a board made of bead method foaming polyolefin.

As for the floor structure concerning one mode of the present invention, it is more preferred that the board made of the above-mentioned foaming polyolefin is a board made of foaming polypropylene.

In the floor structure according to one aspect of the present invention, it is more preferable that the foam polypropylene plate has a density of 20 kg / m ³ to 60 kg / m ³ .

In order to solve the above-mentioned subject, a floor structure unit concerning one mode of the present invention is a floor structure unit for laying on a concrete slab, and a plurality of tiles, an elastic adhesive layer, and a shock absorbing material are put in order from the top The cushioning material is a foamed polyolefin board having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ , and the area of the tile is 80 cm ² or more and 900 cm ² or less. The joint between the tiles is characterized in that it is filled with an elastic joint material.

The floor structure unit according to one aspect of the present invention further comprises an adhesive layer and a release material downward in order below the cushioning material.

In order to solve the above-mentioned subject, a manufacturing method of a floor structure concerning one mode of the present invention applies an adhesives on a concrete slab, and forms an adhesion layer forming process which forms an adhesion layer, and on the above-mentioned adhesion layer, A buffer material laying step of laying a buffer material, an elastic adhesive layer forming step of applying an elastic adhesive on the buffer material to form an elastic adhesive layer, and a plurality of tiles on the elastic adhesive layer A floor structure manufacturing method comprising a tile laying step of laying and a joint material forming step of forming a joint material by filling a joint between the tiles with a joint material having elasticity, wherein the buffer material is thick. It is a foamed polyolefin board having a size of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ , and the area of the tile is 80 cm ² or more and 900 cm ² or less.

In order to solve the above-mentioned subject, the manufacturing method of the floor structure concerning one mode of the present invention applies the adhesive on the floor slab unit manufacturing process which manufactures a floor floor structure unit, and a concrete slab, and the above floor floor unit And a floor structure unit laying step of laying the floor structure unit, wherein the floor structure unit manufacturing step comprises applying an adhesive having elasticity to form an elastic adhesive layer on the buffer material. An adhesive layer forming step, a tile laying step of laying a plurality of tiles on the elastic adhesive layer, and a joint material forming step of filling the joint between the tiles with an elastic joint material to form a joint material; wherein the said cushioning material has a thickness of 7 mm ~ 25 mm, a polyolefin foam plate made of a density of ^{20kg / m 3 ~ 100kg / m} 3, the area of the tile, 80 cm ² or more, 900 cm ² or less It is characterized in that.

The floor structure according to an aspect of the present invention is a floor structure using a vibration-proof tile base material, and is suitably used, for example, for an entrance of an apartment complex such as an apartment, a floor structure such as an elevator hall.

1 floor structure 10 concrete slab 11 cushioning material 12 tile 20 adhesive layer 21 elastic adhesive layer 22 joint material

Claims (11)

A floor structure in which tiles are laid on a concrete slab via cushioning material,
Adhesive layer, cushioning material, elastic adhesive layer, and multiple tiles in order from the bottom,
The cushioning material is a foamed polyolefin board having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ ,
A floor structure in which the area of the tile is 80 cm ² or more and 900 cm ² or less, and the joint between the plurality of tiles is filled with a joint material having elasticity. The floor structure according to claim 1, wherein the elastic adhesive layer has an elongation at break of at least 35% at 23 ° C in a film physical property test defined in JIS A5557: 2006. The joint material, JIS A5758: 50% elongation at a stress at a defined tensile test in 2010 is 30 kgf / cm ² or less, the floor structure according to claim 1 or 2. The floor structure according to any one of claims 1 to 3, wherein the cushioning material has a displacement of 1 mm or less when a load of 50 kg is applied to the area of one tile. The floor structure according to any one of claims 1 to 4, wherein the foamed polyolefin plate is a bead-formed foamed polyolefin plate. The floor structure according to any one of claims 1 to 5, wherein the foamed polyolefin plate is a foamed polypropylene plate. The floor structure according to claim 6, wherein the foamed polypropylene plate has a density of 20 kg / m ³ to 60 kg / m ³ . Floor construction unit for laying on concrete slabs,
Multiple tiles, elastic adhesive layer, and cushioning material, from top to bottom
The cushioning material is a foamed polyolefin board having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ ,
The floor structure unit in which the area of the tile is 80 cm ² or more and 900 cm ² or less, and the joint between the plurality of tiles is filled with an elastic joint material. The floor structure unit according to claim 8, further comprising an adhesive layer and a release material downward in order under the cushioning material. An adhesive layer forming step of applying an adhesive on a concrete slab to form an adhesive layer;
A shock absorbing material laying step of laying a shock absorbing material on the adhesive layer;
An elastic adhesive layer forming step of applying an elastic adhesive on the buffer material to form an elastic adhesive layer;
A tile laying step of laying a plurality of tiles on the elastic adhesive layer;
A joint material forming step of filling a joint between the tiles with a joint material having elasticity to form a joint material;
The cushioning material is a foamed polyolefin board having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ ,
Area of the tile, 80 cm ² or more, the production method of the floor structure is 900 cm ² or less. Floor structure unit manufacturing process for manufacturing a floor structure unit;
A floor structure unit laying step of applying an adhesive on a concrete slab to lay the floor structure unit, and a floor structure manufacturing method,
The floor structure unit manufacturing process
An elastic adhesive layer forming step of applying an elastic adhesive on the buffer material to form an elastic adhesive layer;
A tile laying step of laying a plurality of tiles on the elastic adhesive layer;
A joint material forming step of filling the joint between the tiles with an elastic joint material to form a joint material;
The cushioning material is a foamed polyolefin board having a thickness of 7 mm to 25 mm and a density of 20 kg / m ³ to 100 kg / m ³ ,
Area of the tile, 80 cm ² or more, the production method of the floor structure is 900 cm ² or less.

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