KR20090105055A - Panel for absorbing floor impact sound - Google Patents

Abstract

PURPOSE: A panel for absorbing floor impact sound is provided to improve the long-term durability and reduce the whole weight. CONSTITUTION: A panel for absorbing floor impact sound comprises a foaming polystyrene layer(206) and a wood board(210). The panel for absorbing floor impact sound is installed between a slab layer(202) and a finishing mortar layer(214). A plurality of holes(208) is formed at the foaming polystyrene layer. The wood board is positioned at the upper part of the foaming polystyrene layer. The density of the wood board is 0.3~0.9g / cm^3.

Description

Panel for absorbing floor impact sound}

The present invention relates to a floor impact sound absorbing panel, and more particularly, to a floor impact sound absorbing panel installed between the slab layer and the finishing mortar layer to minimize the interlayer transfer of floor impact sound.

Recently, due to the change in the construction structure such as the input of steel frame and reduction of the slab thickness due to the high-rise of the house, the floor impact sound is generated between floors of the multi-family housing, which is increasing the complaints of residents.

As the noise problem between floors has become serious in apartments, regulations on housing construction standards have been strengthened and revised. The regulations stipulate that the floor impact sound between floors should be less than 58 decibels (db), the weight impact sound should be 50 decibels (db) or less, or a standard floor structure determined and announced by the Minister of Construction and Transportation.

Recently, in order to reduce the floor impact sound, the double impacted floor structure is applied by using the floor shock sound absorbing panel in the construction of a multi-family house, so that the floor impact sound is dispersed and absorbed in the process of transferring the floor impact sound to the concrete slab, thereby reducing the noise between floors. The moon is minimal.

On the other hand, such a floor impact sound absorbing panel uses a wood plate as a blocking plate, because the sound absorbing effect for the heavy impact sound, which is a low frequency band of the sound that occurs frequently in everyday life, and excellent workability.

Conventional floor impact sound absorbing panel including the wood plate is disclosed in Korea Patent No. 10-0429103. Hereinafter, a bottom impact sound absorbing panel disclosed in the above Patent No. 10-0429103 will be described with reference to FIG. 1. 1 is a partial cross-sectional view showing a floor impact sound absorbing panel disclosed in the Patent No. 10-0429103.

Referring to the drawings, the floor impact sound absorbing panel 20 is installed on the floor concrete slab 10 of the building, the upper floor of the impact sound absorbing panel 20, the conventional lightweight foam concrete layer 30 and the finishing mortar layer ( 40) is installed step by step. Here, the bottom impact sound absorbing panel 20 is a high density block 21 arranged at a predetermined interval on the concrete slab 10, a plate-shaped low density sound absorbing material 22 provided between the high density block 21, and the high density block 21 and the low density sound absorbing material 22, the wood plate 23 is laminated.

The floor impact sound absorbing panel 20 not only reduces impact sound but also maintains durability against long-term loads generated by the finishing mortar layer 40, the floor finishing layer 50, and furniture stacked on the floor shock absorbing panel 20. It should be possible. In addition, even if the heating pipe installed in the finishing mortar layer 40 is damaged and the heating water penetrates into the wood board 23, the degree of expansion should be small. When the heating pipe fixing device is installed on the wood board 23, the fixing device is wood It should be able to be held on the plate 23.

However, the wood plate 23 of the floor impact sound absorbing panel 20 when the finishing mortar is impregnated with the mortar or the heating pipe is damaged after the construction, the heating water soaked, the finish by the partial thickness increase of the wood plate 23 Cracking may occur on the surface of the mortar layer 40, resulting in a decrease in the bending strength of the wood board 23, and there is a risk of being settled when subjected to a long load. In addition, when the fixing device is installed on the wood plate 23 without considering the installation of the heating pipe fixing device, there is a problem that a crack may occur in the finishing mortar layer 40 due to the elastic force of the heating pipe.

As described above, the bottom impact sound absorbing panel 20 refers to the structure and the shape of the structure, but there is a problem in that a specific characteristic value related to the shape is not presented and the effect thereof is insufficient.

The present invention has been made in view of the above-described problems, and an object thereof is to provide a floor shock sound absorbing panel capable of minimizing interlaminar transmission of impact sound and securing stable characteristics in the long term.

The present invention for achieving the above object, the bottom impact sound absorbing panel to be installed between the slab layer and the finishing mortar layer, the bottom impact sound absorbing panel, a plurality of holes formed polystyrene foam; It provides a floor impact sound absorbing panel comprising a; wood plate material located above the foamed polystyrene layer.

Preferably the density of the wood board is formed in the range of 0.3 to 0.9 g / cm 3. When the density is less than 0.3g / cm 3, the flexural strength and durability are lowered. When the density is larger than 0.9g / cm 3, the transportation is difficult and the workability is reduced.

Preferably, the bending strength of the wood board is formed in the range of 15 to 35 N / mm2. If the flexural strength is less than 15N / ㎜ may be easily bent or broken, if larger than 35N / ㎜ it is difficult to transport and the price rises, economic efficiency is low.

Preferably the absorption thickness expansion ratio of the wood board is formed to 20% or less. If the thickness expansion ratio is greater than 20%, cracking may occur on the surface of the finishing mortar, and the bending strength of the wood board may be lowered, which may cause settlement when subjected to a long load.

Preferably the screw holding force of the wood plate is formed in the range of 300 to 500N. If the screw holding force is less than 300N, the heating opening fixture cannot be fixed to the wood plate, so the elasticity of the heating pipe cannot fix the heating pipe to the cushioning material. If the screw holding force is higher than 500N, the density of the wood plate increases, resulting in economical and constructability. Degrades.

According to the present invention, the floor impact sound reduction effect can be improved by stacking a wood plate on the foamed polystyrene layer having a plurality of holes to secure a space layer formed by the holes. In addition, the floor impact sound absorbing panel is lightened, easy to install, and long-term durability is also excellent effect.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

2 is a partial cross-sectional view showing an embodiment of a floor impact sound absorbing panel according to the present invention.

Referring to FIG. 2, the floor shock sound absorbing panel 200 according to the present invention is a finishing mortar layer 214 in which a floor slab layer 202 made of reinforced concrete and a heating pipe 218 are installed as a skeleton dividing the floors of a building. It is installed between, and includes a foamed polystyrene layer 206 having a plurality of holes 208 and the wood plate 210 positioned on the foamed polystyrene layer 206.

The foamed polystyrene layer 206 includes a plurality of holes 208, and the space layer located inside the hole 208, that is, the air layer, absorbs the impact sound transmitted from the upper portion of the foamed polystyrene layer 206 to interlayer. The noise generated can be effectively reduced. Here, the shape of the hole 208 may be formed of a polygon other than a rectangle, a circle, an oval, of course.

The wood plate 210 is laminated on the expanded polystyrene layer 206 to secure a space layer formed by the plurality of holes 208. In order to secure such a space layer, the density of the wood plate 210 is preferably 0.3 to 0.9 g / cm 3. When the density is less than 0.3 g / cm 3, the weight can be reduced, but the required flexural strength and durability are inferior. When the density is larger than 0.9 g / cm 3, the flexural strength and the sag performance are satisfied.

In addition, the bending strength of the wood plate 210 is preferably 15 to 35N / ㎜. When the flexural strength is less than 15 N / mm 2, it may be easily bent, so that it is difficult to secure a space layer formed by the hole 208 of the expanded polystyrene layer 206. Can be. When it is larger than 35 N / mm 2, it is not preferable because the density is high, the transportation is difficult and the price is increased.

In addition, the wood plate 210 of the floor impact sound absorbing panel 200 according to the present invention preferably has an absorption thickness expansion ratio P calculated by Equation 1 below 20%.

Here, P represents the absorption thickness expansion rate (%), t ₁ represents the thickness of the specimen before immersion, t ₂ represents the thickness of the specimen after immersion in 20 ℃ distilled water for 24 hours.

When the absorption thickness expansion ratio of the wood plate 210 is greater than 20%, the mortar penetrates upon finishing mortar construction or when the heating pipe 216 is broken after construction, the heating water penetrates into a partial thickness increase of the wood plate 210. Cracking may occur in the finishing mortar layer 214. In addition, since the bending strength of the wood board member 210 may be reduced, and may be settled when subjected to a long load, it is not preferable.

In addition, the wood plate 210 is preferably a screw holding force of 300 to 500N so that when the heating pipe 216 fixing device is installed on the wood plate 210 so that the fixing device can be maintained on the wood plate 210. When the screw holding force is less than 300N, the heating pipe 216 fixing device cannot be fixed to the wood plate 210, so the heating pipe 216 can be fixed to the wood plate 210 by the elastic force of the heating pipe 216. none. If so, there is a problem in that bending occurs on the surface of the wood plate 210 or cracks in mortar. In addition, when the screw holding force is greater than 500N, the fixing ability of the fixing device for the heating pipe 216 is improved, but the density and the weight of the wood plate 210 is increased, which is not preferable because there is a problem that the price and weight increase.

Meanwhile, a buffer layer 212 may be further installed on the wood plate 210. The buffer layer 212 may be formed of a natural fiber pad or an artificial fiber pad, and the artificial fiber pad may include polyester fiber, glass fiber, rock wool, or the like.

In addition, a wall insulator 220 is positioned between the sidewall 204 and the respective layers 206, 210, 212, and 214. The wall insulator 220 merely contacts the sidewall 204 and the layers 206, 210, 212, 214, but is not firmly attached.

As described above, in order to manufacture the floor impact sound absorbing panel 200 according to an embodiment of the present invention, the thickness of the wood plate 210 is 9 mm, the density is 0.6 g / cm 3, the bending strength is 25 N / mm 2, and the absorption thickness. The expansion rate was 13 ~ 15%, the screw holding force was 500N, and the product with the horizontal and vertical size of 1000mm × 1000mm was used.

As a result of measuring the floor impact sound by applying the floor impact sound absorbing panel 200 according to the present invention manufactured by using the wood plate 210, the single value evaluation amount of the weight impact sound of the basic slab value where nothing was installed was about 52 dB. However, the construction of the floor impact sound absorbing panel 200 according to the present invention and the weight impact sound evaluation amount (reverse A value) measured 38 ~ 39dB level corresponding to the first grade. In addition, even after eight weeks, the weight-impact sound evaluation amount (inverse A value) did not change to 39 dB, and it was confirmed that the characteristics were very excellent. In addition, when the finishing mortar surface was observed after a curing period of about two weeks after the installation of the heating pipe and the finishing mortar, the wood plate 210 did not swell or cracks occurred on the mortar surface which may be caused by the fixing of the heating pipe. .

As described above, the floor impact sound absorbing panel 200 according to the present invention is a space layer in which the holes 208 are formed by stacking the wood plate 210 on top of the expanded polystyrene layer 206 having a plurality of holes 208 formed therein. By ensuring this, the floor impact sound reduction effect can be improved. In addition, the floor impact sound absorbing panel 200 is lightened and easy to install, and long-term durability is also excellent effect.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

The following drawings, which are attached to this specification, illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical idea of the present invention, the present invention includes the matters described in such drawings. It should not be construed as limited to.

1 is a partial cross-sectional view showing a floor impact sound absorbing panel according to the prior art.

2 is a partial cross-sectional view showing an embodiment of a floor impact sound absorbing panel according to the present invention.

Claims (5)

In the floor impact sound absorbing panel to be installed between the slab layer and the finishing mortar layer, The bottom impact sound absorbing panel, A foamed polystyrene layer having a plurality of holes formed therein; And Floor impact sound absorbing panel comprising a; wood plate material located above the expanded polystyrene layer. The method of claim 1, The floor impact sound absorbing panel, characterized in that the density of the wood plate material 0.3 ~ 0.9g / ㎠. The method according to claim 1 or 2, Floor impact sound absorption panel, characterized in that the bending strength of the wood plate material is 15 to 35N / ㎜. The method according to claim 1 or 2, Floor shock sound absorption panel, characterized in that the absorption thickness expansion rate of the wood plate material is 20% or less. The method according to claim 1 or 2, Screw holding force of the wood plate material is a floor impact sound absorbing panel, characterized in that 300 to 500N.

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