KR20180025420A - Noise reduction method between floors in reinforced concrete buildings using composite mortar with improved sound insulation and sound absorption - Google Patents

Abstract

The present invention relates to a method to reduce noise between floors of a reinforced concrete apartment house using composite mortar with improved sound insulation and sound absorption performance. According to the present invention, the method to reduce noise between floors of the reinforced concrete apartment house using composite mortar comprises: a step of installing a concrete slab; a step of wrapping and installing a sound insulation reinforcement member with sound insulation performance, which is the same with that of reclaimed rubber, on the concrete slab; a step of installing a mesh member to wrap around the sound insulation reinforcement member; a step of mixing a sound insulation material for reducing heavy impact noise, a sound absorption material for reducing light impact noise, and an artificial mineral fiber having an insulation performance with floor mortar to install a composite mortar layer of a single layer on the mesh member; and a step of constructing a floor finishing material on the composite mortar layer. The step of wrapping and installing the sound insulation reinforcement member comprises: a step of forming a plurality of penetrating holes at regular intervals on the sound insulation reinforcement member. The step of installing the mesh member has a plurality of mesh members having different sizes of eyes or different arrangements of eyes of the same size. The present invention is to provide a method to reduce noise between floors of a reinforced concrete apartment house, which is able to effectively reduce noise between floors generated in the newly built or aged apartment house by considering economic efficiency in accordance with the thickness of a slab of a reinforced concrete structure while reducing noise between floors.

Description

Technical Field [0001] The present invention relates to a noise reducing method for a reinforced concrete apartment house using a composite mortar having improved sound insulation and sound absorption performance. [0002]

The present invention relates to a concrete structure reinforcing method, and more particularly, to a method for reducing interlayer noise of a reinforced concrete apartment house.

Until recently, Korea has been rapidly promoting the construction of apartment houses, mainly apartments, in order to provide comfortable environment and efficient housing by eliminating the housing shortages and increasing the land use rate. As a result, more than 70% of the recent housing construction has been occupied by multi-family houses, which has become a representative type of housing in Korea.

In the 1980s, the majority of the apartments were built in the wall, and then the high - rise apartments and residential complexes in the late 1990s appeared. At present, wall-style apartments over 20 years have gradually begun to be structurally obsolete as well as functionally and spatially, resulting in many social problems.

Especially, in aged apartment buildings and apartment buildings, crime cases such as murder and fire due to floor impact noise have been occurred repeatedly. Therefore, there is a growing public opinion to include interlayer noise and vibration in the evaluation items of safety diagnosis during reconstruction.

Therefore, it is required to construct the floor structure satisfying both the thickness and the constant breaking performance by integrating the standard floor structure and the recognized floor structure in the new building, but it is a problem because there is no sound insulation provision for the existing building.

In particular, it is not sufficient to reduce both the weight impactor and the lightweight impactor by using only one sound insulating material or sound absorbing material.

In addition, conventionally, the finishing mortar, lightweight foamed concrete and sound insulating material are applied as separate layers, and the process is complicated and the increase in the thickness of the layer does not have a great influence on the improvement of the sound insulation performance and the insulation layer must be separately provided. It was necessary to improve the structural performance.

Therefore, a method for solving such problems is required.

Korean Patent Publication No. 10-2006-0021052

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in an effort to solve the above-mentioned problems of the related art, and an object of the present invention is to provide a method of reducing the interlayer noise of a reinforced concrete apartment house.

In addition, considering the economical efficiency of slab thickness of reinforced concrete structure while reducing the interlayer noise, an economical method is proposed to effectively reduce the interlayer noise generated in new and old apartment buildings.

In particular, it is intended to provide an effective method that satisfies both the sound insulation performance for blocking the interlayer noise and vibration (solid sound) and the sound absorption performance for absorbing the noise and the vibration sound while preventing the noise from being reflected by the surface.

In addition, it is intended to provide a method of reducing the interlayer noise by reducing the interlayer noise, improving the insulation performance of the floor of the apartment house, and simplifying construction and facilitating various deformation constructions.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to another aspect of the present invention, there is provided an interlayer noise reduction method for a reinforced concrete building, the method comprising: installing a concrete slab; Installing a sound insulation reinforcement member having sound insulation performance such as recycled rubber on the concrete slab; Installing a mesh member to surround the sound-insulating reinforcing member; Providing a composite mortar layer on the mesh member by mixing a sound insulating material for reducing heavy impact sound, a sound absorbing material for reducing light impact sound and a synthetic mortar fiber having a heat insulating property into a bottom mortar to form a single layer; Applying a floor finish; Wherein the step of wrapping and mounting the sound-absorbing member includes the step of forming a plurality of through-holes arranged at a predetermined interval in the sound-absorbing member; The step of providing the mesh member includes a plurality of mesh members having different sizes of eyes or different arrangements of eyes formed to have the same size.

The method may further comprise mixing and installing a sound absorbing material selected from vinyl chloride, polymer rubber, sound insulating material selected from iron powder, melamine foam having a porous structure, expanded polystyrene, and PP microfiber fiber capable of increasing the surface density can do.

In the above method, the thickness of the composite mortar layer may be determined in consideration of the position of the piping installed in the bottom finishing material and the thickness of the piping.

The method may further include the step of placing the urethane foam concrete at a thickness of 70 to 80 mm and the step of installing the pipe on the composite mortar layer.

In the above method, the melamine foam, the expanded polystyrene, and the PP microfine fiber may be additionally formed so as to be spherically formed and mixed into the composite mortar layer.

In the above method, the mixed mortar layer may be further mixed with the wood chips and the latex mixed material.

The method may further include the step of injecting an adhesive such as an epoxy resin through the through hole of the sound-insulating reinforcing member to bond the sound-insulating reinforcing member to the concrete slab.

In this method, the sound-reinforcement member is installed to surround all the surfaces of the concrete slab, and the mesh member is installed to surround all the surfaces of the sound-absorbing member.

The method of reducing interlayer noise of another reinforced concrete building of the present invention comprises the steps of installing a concrete slab; Installing a sound insulation reinforcement member having sound insulation performance such as recycled rubber on the concrete slab; Installing a mesh member to surround the sound-insulating reinforcing member; Installing a composite mortar layer on the mesh member by mixing a sound insulating material for reducing heavy impact sound, a sound absorbing material for reducing light impact sound and a synthetic mortar fiber having a heat insulating property in a bottom mortar to form a single layer; Applying a floor finish on the composite mortar layer; Wherein the step of wrapping and mounting the sound-absorbing member includes the step of forming a plurality of through-holes arranged at a predetermined interval in the sound-absorbing member; And an embossing is provided in the spacing space between the plurality of through holes and the through holes so as to separate the concrete slab and the sound reinforcement member from each other and absorb shock transmitted from the sound insulation reinforcement member to the concrete slab.

In the above method, the step of providing the mesh member may further include the step of forming a plurality of mesh members having different sizes of eyes or arranging the same size of eyes in different sizes.

The method may further comprise mixing and installing a sound absorbing material selected from vinyl chloride, polymer rubber, sound insulating material selected from iron powder, melamine foam having a porous structure, expanded polystyrene, and PP microfiber fiber capable of increasing the surface density can do.

The method of reducing interlayer noise of a reinforced concrete building of the present invention includes the steps of installing a concrete slab; Installing a sound insulation reinforcement member having sound insulation performance such as recycled rubber on the concrete slab; Installing a mesh member to surround the sound-insulating reinforcing member; Providing a composite mortar layer on the mesh member by mixing a sound insulating material for reducing heavy impact sound, a sound absorbing material for reducing a light impact sound and a synthetic mortar fiber having a heat insulating property in a bottom mortar to form a single layer; Applying a floor finish on the composite mortar layer; Wherein a plurality of interference protrusions are formed on the concrete slab and a plurality of interference protrusions are formed on the outer circumferential surface of the concrete slab so as to widen the contact area with the concrete slab, And coupling the fastening member to the nut embedded in the groove to fix the fastening member.

In the method, the step of wrapping and installing the sound-absorbing member includes the step of forming a plurality of through-holes arranged at predetermined intervals in the sound-absorbing member; The step of providing the mesh member may further include the step of forming a mesh of different sizes or a plurality of mesh members having different arrangements of eyes formed in the same size.

The method may further comprise mixing and installing a sound absorbing material selected from vinyl chloride, polymer rubber, sound insulating material selected from iron powder, melamine foam having a porous structure, expanded polystyrene, and PP microfiber fiber capable of increasing the surface density can do.

In order to solve the above problem, the interlayer noise reduction method of a reinforced concrete apartment house has the following effects.

First, the existing sound insulation layer, lightweight foamed concrete (lightweight foam mortar) layer and finished mortar layer are constructed with one composite mortar layer, which greatly increases the convenience of construction.

Second, since a heat insulating layer is provided together in the composite mortar layer, it is a breakthrough method that can complement the heat insulating performance as well as the sound insulating performance. Particularly, when only the sound reinforcement member is used for the purpose of improving the internal strength, it is difficult to cut off the light impact sound more effectively than the heavy impact sound blocking performance. However, according to the present invention, it is possible to simultaneously block the heavy impact sound and the light impact sound.

Third, it is possible to reduce the floor height of the reinforced concrete bottom layer by constructing the composite mortar layer.

The effects of the present invention are not limited thereto, and other effects can be exhibited by the peculiar constitution of the present invention.

1 is a view showing a conventional reinforced concrete bottom layer.
FIG. 2 is a view illustrating a construction in which a sound insulating material is installed on a concrete floor.
3 is a view showing a reinforced concrete bottom layer according to a first embodiment of the present invention.
4 is a view showing the thickness variation of the conventional bottom layer and the bottom layer of the first embodiment according to the present invention.
5 is a construction flowchart of a conventional bottom layer.
Fig. 6 is a construction flowchart of the bottom layer of the first embodiment according to the present invention. Fig.
7 is a view for explaining installation of a sound reinforcement member in a second embodiment of the present invention.
8 is a view for explaining the provision of the mesh member in the second embodiment of the present invention.
FIG. 9 is a view for explaining that two mesh members having different eye sizes are provided in the second embodiment of the present invention.
10 is a view for explaining the provision of two mesh members having the same eye size in the second embodiment of the present invention.
11 is a view for explaining how a sound-reinforcement member and a mesh member are fixed to a concrete slab in a second embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

FIG. 1 is a view showing a conventional structure of a conventional bottom layer. Referring to FIG. 1, a conventional reinforced concrete bottom layer 10 includes a concrete slab 11, a sound insulating material 12, a lightweight foamed concrete 13, a finishing mortar 14, and a bottom finishing material 15, .

In the conventional reinforced concrete bottom layer 10, although the concrete slab 11 is generally installed at 180 mm, the thickness of the concrete slab 11 may be increased to 210 mm or more in order to prevent the interlayer noise In this case, the construction cost will increase by 5 ~ 6%. In addition, there is a problem of inefficiency that the sound impact is limited compared with the increase in thickness of concrete slab, as compared with the increase in slab thickness.

At present, newly constructed buildings are required to incorporate a standard floor structure and a recognized floor structure, so that a floor structure satisfying both a certain thickness and a certain breaking performance is required.

1, a sound insulating material 12 is installed on a concrete slab 11 in the same order as in FIG. 5, a lightweight foamed concrete 13 and a finishing mortar 14 are successively formed, (15) is constructed, which is not only complicated but also has a problem of securing the floor area because the floor is thicker and the floor height becomes larger and the floor is overcrowded. Furthermore, as described above, the sound insulation effect is not exhibited as thick as the thickness.

In order to solve such a problem, in the first embodiment of the present invention, the reinforced concrete bottom layer 10 is constructed as shown in FIG. 6 as shown in FIG. That is, after the concrete slab 101 is constructed, a sound insulating material and a sound absorbing material are mixed with the finishing mortar to form a single composite mortar layer 102. Therefore, the reinforced concrete bottom layer 100 of FIG. 3 is a concrete slab 101, a composite mortar layer 102, and a bottom finishing material 103, simplifying the construction process.

In addition, since the sound insulating material, the lightweight foamed concrete and the finishing mortar of FIG. 1 are constructed as one composite mortar layer 102, the thickness of the reinforced concrete bottom layer naturally decreases as shown in FIG.

However, when the construction is carried out in such a manner, the thickness is reduced, and there are advantages such as reduction of the construction cost and reduction of the floor height. However, when the above problem is solved, the heat transfer rate can be improved due to the reduction of the thickness of the bottom layer. Can be a problem. In order to solve this problem, in the present invention, artificial mineral fibers having sound absorption and heat insulation performance are jointly applied to the composite mortar layer 102 so that the heat insulation performance deterioration due to the thickness reduction can be solved, while the heat insulation performance can be improved.

The sound insulating property of a sound insulating material is usually a hardness or a relatively rigid material, and it plays a role of blocking and reflecting negative sound. In the case of a sound absorbing material, it has a property of inducing sound in reverse (so that sound absorption is possible) A relatively less rigid material such as a foaming agent is used.

Because of the difference in physical properties between the sound insulating material and the sound absorbing material as described above, the sound insulating material is advantageous for blocking heavy impact sound and the sound absorbing material is advantageous for blocking the light impact sound sound, so that the sound insulating material and the sound absorbing material can be used separately.

Since the composite mortar layer 102 of the present invention is formed by integrating the sound insulating material and the sound absorbing material and then being subjected to a mortar treatment together with the floor mortar in a single layer, the composite mortar layer 102 itself has a light weight sound impact sound effect (sound absorption effect) ), The soundproof effect can be exerted. That is, the sound insulating material and the sound absorbing material can be simultaneously subjected to a mortar treatment so that a single layer can be constructed as a single new material.

In the present invention, for example, a sound absorbing material and a sound insulating material are mixed with a mortar so that the sound absorbing material absorbs the noise when the noise is transmitted through the mortar, and sound absorption and sound insulation are generated at the same time, It is possible to simultaneously achieve the effect of alleviating the interlayer noise vibrations and the effect of surface treatment of the finish material.

As described above, the overall thickness is reduced compared to the conventional reinforced concrete bottom layer 10 of FIG. 1, but the effect of the thickness reduction on the increase of the interlaminar noise is not large. This is because the sound insulation performance due to the sound insulating material added to the composite mortar layer 102 And improvement of the sound absorption performance due to the sound absorbing material. In the present invention, any one or more of vinyl chloride, polymer rubber, and iron powder is used as a sound insulating material to be added to the composite mortar layer 102, and at least one of melamine foam, expanded polystyrene (EPS), and PP micro- . When the sound insulating material and the sound absorbing material are mixed in the composite mortar layer 102, a part of the noise source passing through the composite mortar layer 102 is reflected by the sound insulating material in the composite mortar layer 102 and the other part is absorbed through the sound absorbing material The sound absorbing effect is fermented and the effect of attenuating the interlayer noise is expressed.

That is, by adopting the interlayer noise reduction structure of the present invention, sound absorption performance (light weight impact sound) can be achieved in addition to the improvement of the proof strength and securing the sound insulation performance (heavy impact sound).

It is difficult to effectively prevent both the heavy impact sound and the light impact sound by using either the sound insulating material or the sound absorbing material which is used for the purpose of sound insulation in the conventional structure and the gypsum board which is commonly used as a sound insulating material is not itself an environmentally friendly material However, in the present invention, this can be replaced with a composite mortar layer of "sound insulating material and sound absorbing material + mortar", so that the convenience of construction and the problem of environmental pollution can be solved at once.

Of the sound absorbers described above, melamine foams are particularly advantageous in workability, nonflammability, and low density, and PP microfine fibers are environmentally friendly and highly surface-tight.

In addition, the composite mortar layer 102 may be made by mixing a lightweight bubble mortar with a heat insulating material such as artificial mineral fibers to improve the heat insulating performance. That is, the artificial mineral fiber and the lightweight foam mortar are mixed together in the composite mortar layer 102. Insulation materials such as artificial mineral fibers such as glass wool and mineral wool are thin and uniform, and the formation of micropores is continuous, and the air layer is finely divided to block the heat flow and to absorb the sound. Can be further improved. In addition, lightweight foamed mortar is a collection of very small bubbles surrounded by cement mortar. Bubble mortar type has very low thermal conductivity, dynamic energy absorbency, high heat resistance and tensile stress characteristics And has a constant resistance constantly until all the bubbles contained therein are broken), which is excellent in heat insulation and durability. Therefore, the composite mortar layer 102 structurally integrating the heat insulating material in the lightweight foamed mortar can increase the durability while simplifying the structure, and can secure excellent heat insulation and sound absorption performance.

The finishing mortar mixed into the composite mortar layer 102 serves as a material for mixing the sound insulating material and the heat insulating material, and at the same time, it is formed as a finishing mortar so as to protect the bottom layer and provide a surface treatment effect.

In the present invention, the sound insulating material, the sound absorbing material, the lightweight foamed concrete and the finishing mortar are formed into a single composite mortar layer. For this purpose, one or more of vinyl chloride, polymer rubber, and iron powder is used as the sound insulating material and melamine foam, expanded polystyrene EPS), and PP microfiber fibers. Lightweight foamed concrete is constructed using artificial mineral fibers with heat insulation performance as lightweight foamed mortar. The finishing mortar also uses materials with interlayer noise reduction and uses as a finishing material. So that the surface treatment effect is achieved. In addition, the floor finishing material can be made of a polymeric resin mortar-based finishing material, and the polymer particles having excellent bonding force penetrate deeply into the structure surface and structure, thereby increasing the strength and durability.

When the composite mortar layer 102 of the present invention is applied as described above, it is possible to construct the composite mortar layer 102 in a single layer structure, thereby greatly increasing the convenience of the construction. In addition, since the single composite mortar layer 102 ensures the sound insulation and the sound absorbing effect and the heat insulating performance, the convenience of the construction is greatly increased.

Sound insulating material and sound absorbing material have the effect of mitigating the interlayer noise, lightweight foam mortar has heat insulating performance, and finish mortar has bottom layer protection and surface treatment effect. Figure 6 shows the simplified method for the composite mortar layer of a single composite mortar.

One of the important ones is to determine the thickness of the single mortar considering the installation of the piping 104. When the composite mortar layer 102 shown in FIG. 4 is applied, the compressive strength of the finished mortar is generally 20 MPa, but the compressive strength must be controlled in consideration of the performance of the lightweight foamed mortar. The size and content of the materials added to the composite mortar also need to be adjusted.

According to the present invention, it is possible to solve the problem that the existing finishing mortar, lightweight foamed concrete and sound insulating material are applied as separate layers and the process is complicated, the increase in the thickness of the layer does not greatly affect the improvement of the sound insulation performance, .

The lightweight foamed concrete may be a lightweight foam mortar.

Also, in the present invention, it may be advantageous to directly install the urethane foam concrete on the concrete slab to construct the piping 104 of the bottom mortar. In this case, the urethane foam concrete can be installed at a thickness of 70 to 80 mm, and the thickness of the concrete slab may be 150 to 180 mm.

A second embodiment of the present invention will be described with reference to Figs. 7 to 11. Fig.

In the second embodiment, the sound absorbing member 200 and the mesh member 300, which can be selectively applied to the first embodiment using the composite mortar layer 102, are added. The composite mortar layer 102 according to the present invention is advantageous in that sound insulation, sound absorption, insulation and finishing are completed by one layer, and the floor thickness is reduced, The necessity of reinforcement of durability and reinforcement of vibration proof can be raised. For this purpose, in the second embodiment of the present invention, the sound insulation reinforcement member 200 as shown in FIG. 7 and the mesh member 300 as shown in FIG. 8 may be additionally provided separately from the sound insulating material of the composite mortar layer 102.

In the conventional reinforced concrete bottom layer 10 as shown in FIG. 1, since the sound insulating material 12, the lightweight foamed concrete 13 and the finishing mortar 14 are separately formed on the concrete slab 11, the bottom thickness is thicker than the thickness However, in the second embodiment of the present invention, a separate sound reinforcement member 200 is installed to reinforce the sound insulation performance of the composite mortar layer 102, and a separate mesh member 300 is installed to reinforce the sound insulation reinforcement member 200. The vibration absorbing performance is also improved by increasing the bottom thickness of a certain portion. In addition, structural stability and rigidity can be improved due to the upper mesh member 300. Compared with the conventional embodiment shown in Fig. 1, the bottom thickness is reduced while the sound insulation performance and the dustproof performance are superior to those of the conventional art shown in Fig. 1 or the first embodiment shown in Fig.

Referring to FIG. 7, in the method of reducing the inter-layer noise of the reinforced concrete building of the present invention, the concrete slab 101 is wrapped around a sound reinforcement member 200 made of an elastic material such as reclaimed rubber. As the sound-absorbing member 200, various materials for sound insulation may be used. In this embodiment, the sound-absorbing member 200 is made of recycled rubber, but a foamed polyethylene sheet can be used. In addition, a porous synthetic resin such as a sponge or a nonwoven fabric can be made to have a sound-absorbing property. In this case, resonance in the hole should be suppressed and resonance sound should be absorbed to reduce the noise.

A plurality of through holes 210 arranged at a predetermined interval are formed in the sound-insulating reinforcing member 200. The through holes 210 may be formed in various shapes, but in the present embodiment, a plurality of rectangular through holes 210 are formed at predetermined intervals along the longitudinal direction of the sound reinforcement member 200.

Meanwhile, an embossing 220 is formed in the spacing space between the through hole 210 and the through hole 210 in the sound reinforcement member 200. When the embossing 220 is formed, the space between the through hole 210 and the through hole 210 can absorb a certain portion of the impact transmitted to the concrete slab 101, thereby improving the sound absorption effect due to the impact, The effect can be expected.

This embossing minimizes the contact between the concrete slabs 101 and the sound reinforcement member 200 to minimize the impact transmission while providing a space between the concrete slabs 101 and the concrete slabs 101, It is expected that the effect of supplementing the sound insulation and sound absorption effect and the insulation effect can be expected.

An adhesive such as an epoxy resin is injected through the through hole 210 of the sound reinforcement member 200 to be firmly attached to the concrete slab 101.

The sound reinforcement member 200 may be installed on all sides of the concrete slab 101, but may be installed on only a part of the sides of the concrete slab 101.

Further, as shown in FIG. 8, the mesh member 300 is mounted on the sound-absorbing member 200.

As shown in FIGS. 9 and 10, at least two of the mesh members 300 may be installed in the sound-insulating reinforcing member 200 on the concrete slabs 101 at the same time.

A plurality of eyes 310 having different sizes are formed on the mesh member 300 so that the mesh member 300 is overlapped with the sound reinforcement member 200 and the wire density of the mesh member 300 is different for each mesh member 300 do. Therefore, it is possible to prevent the sound-insulating reinforcing member 200 from falling off the concrete slabs 101 and to reinforce the strength of the concrete slabs 101.

The size of the eye of the mesh member 300 and the arrangement of the eyes can be determined so that the sizes of the eyes 310 of the mesh members 300 overlap each other as shown in FIG. This is because when the plurality of mesh members 300 are overlapped, the places where the eyes 310 of the mesh member 300 are located are shifted from each other to maximize the wire density with respect to the concrete slabs 101, So as to increase the rigidity.

In addition, the wire 310 of the mesh member 300 is different in size, and the mesh members 300 are formed to have different wire densities and are superimposed on each other, resulting in improved structural stability and rigidity.

9 shows an example in which the sizes of the eyes 310 of the mesh member 300 are different from each other. In FIG. 10, the mesh member 300 having the eyes 310 having the same size, Member 200 as shown in Fig.

When the two mesh members (one solid line and one dashed line) having the eyes 310 of the same size and arrangement as shown in FIG. 10 are overlapped, the eye 310 of the mesh member 300 indicated by the solid line, The eye 310 of the mesh member 300 indicated by the dashed line may be positioned between the overlapped mesh member 310 and the eye 310 of the overlapped mesh member 300 may be dense.

The mesh member 300 may be installed on all sides of the concrete slab 101, but may be installed on only a part of the sides of the concrete slab 101. However, the mesh member 300 is installed together with the surface on which the sound-absorbing member 200 is installed.

11, the sound reinforcement member 200 and the mesh member 300 may be fixed by the coupling member 400 by the concrete slabs 101. As shown in FIG. The concrete slab (101) is formed with a coupling groove (410) to which the coupling member (400) is to be coupled. In the present invention, the nuts 420 are embedded in the coupling grooves 410 of the concrete slabs 101 so that the coupling members 400 can be easily fastened to the concrete slabs 101, So that the fastening member 400 can be rotated with respect to the nut 420 to be fastened.

The nut 420 is inserted into the concrete slab 101 with the interference protrusion 421 formed around the nut 420 so that the nut 420 is not separated from the concrete slab. The interference protrusions 421 can be firmly inserted into the concrete slabs 101 by widening the contact area with the concrete slabs 101.

The coupling member 400 is inserted into the coupling groove 410 of the concrete slab 101 through the coupling members 400 to integrally join the concrete slab 101, the sound insulation reinforcing member 200 and the plurality of mesh members 300 And is fastened to the nut 420 having the interference protrusion 421.

A separate packing layer (not shown) may be covered on the mesh member 300, and the composite mortar layer 102 and the bottom finishing material 103 may be formed thereon in the same manner as in the previous embodiment.

It is a matter of course that the concrete slab 101 of the present invention can be a wall, a beam, and a column of a building.

Although not shown in the drawing, reinforcing bars may be installed in the concrete slabs 101 to reinforce the tensile strength of the concrete.

While the embodiments of the present invention have been described with reference to the accompanying drawings, it is to be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: Reinforced concrete floor
101: Concrete slab
102: Composite mortar layer
103: Floor finish
200: a sound reinforcement member
210: Through hole
220: Embossing
300: mesh member
310: Eye
400: fastening member
410: fastening groove
420: nut
421: interference projection

Claims (14)

As an interlayer noise reduction method for reinforced concrete buildings,
Installing a concrete slab,
Installing a sound insulation reinforcement member having sound insulation performance such as recycled rubber on the concrete slab,
Installing a mesh member to surround the sound reinforcement member,
Installing a composite mortar layer formed of a single layer by mixing a sound insulating material for reducing a heavy impact sound, a sound absorbing material for reducing a light impact sound and a synthetic mortar fiber having a heat insulating property in a bottom mortar on the mesh member, and
And applying a floor finish on the composite mortar layer,
The step of wrapping and installing the sound-absorbing member includes the step of forming a plurality of through-holes arranged at a predetermined interval in the sound-absorbing member,
Wherein the step of installing the mesh member comprises a plurality of mesh members having different sizes of eyes or arranging eyes of the same size differently from each other. The method according to claim 1,
And mixing and installing a sound absorbing material selected from vinyl chloride, polymeric rubber, sound insulating material selected from iron powder, melamine foam having a porous structure, expanded polystyrene, and PP microfine fiber to increase the surface density of the composite mortar layer Interlayer Noise Reduction Method of Reinforced Concrete Buildings. The method according to claim 1,
Wherein the thickness of the composite mortar layer is determined in consideration of the position of the piping installed in the bottom finishing material and the thickness of the piping. The method according to claim 1,
Pouring the urea-type concrete into a thickness of 70 to 80 mm,
The method of claim 1, further comprising the step of installing piping on the composite mortar layer to reduce the interlayer noise of the reinforced concrete building. The method according to claim 1,
Wherein the sound absorbing material is applied so that the melamine foam, the expanded polystyrene, or the PP microfine fiber is spherically formed and mixed into the composite mortar layer. The method according to claim 1,
Wherein the composite mortar layer is further mixed with a mixture of wood chips and latex pulverized and then applied to the composite mortar layer to reduce the interlayer noise of the reinforced concrete building. The method according to claim 1,
Further comprising the step of injecting an adhesive such as an epoxy resin through the through hole of the sound-insulating reinforcing member to adhere the sound-insulating reinforcement member to the concrete slab. The method according to claim 1,
Wherein the sound insulation reinforcement member is installed to surround all surfaces of the concrete slab,
Wherein the mesh member is installed so as to enclose all the surfaces of the sound-insulating reinforcing member. As an interlayer noise reduction method for reinforced concrete buildings,
Installing a concrete slab,
Installing a sound insulation reinforcement member having sound insulation performance such as recycled rubber on the concrete slab,
Installing a mesh member to surround the sound reinforcement member,
Installing a composite mortar layer composed of a single layer by mixing a sound insulating material for reducing heavy impact sound, a sound absorbing material for light impact sound reduction, and artificial mineral fibers having heat insulating properties in a bottom mortar on the mesh member, and
And applying a floor finish on the composite mortar layer,
The step of wrapping and installing the sound-absorbing member includes the step of forming a plurality of through-holes arranged at a predetermined interval in the sound-absorbing member,
And an embossing member capable of separating the concrete slab and the sound reinforcement member from each other and absorbing impact transmitted from the sound insulation reinforcement member to the concrete slab is installed in the spacing space between the plurality of through holes and the through- Interlayer Noise Reduction Method in Buildings. 10. The method of claim 9,
Wherein the step of installing the mesh member comprises a plurality of mesh members having different sizes of eyes or arranging eyes of the same size differently from each other. 10. The method of claim 9,
And mixing and installing a sound absorbing material selected from vinyl chloride, polymeric rubber, sound insulating material selected from iron powder, melamine foam having a porous structure, expanded polystyrene, and PP microfine fiber to increase the surface density of the composite mortar layer Interlayer Noise Reduction Method of Reinforced Concrete Buildings. As an interlayer noise reduction method for reinforced concrete buildings,
Installing a concrete slab,
Installing a sound insulation reinforcement member having sound insulation performance such as recycled rubber on the concrete slab,
Installing a mesh member to surround the sound reinforcement member,
A step of installing a composite mortar layer composed of a single layer by mixing a sound insulating material for reducing heavy impact sound, a sound absorbing material for reducing light impact sound and a synthetic mineral fiber having a heat insulating property in a bottom mortar on the mesh member,
Applying a floor finish on the composite mortar layer,
Wherein a plurality of interference protrusions are formed on the concrete slab and a plurality of interference protrusions are formed on the outer circumferential surface of the concrete slab so as to widen the contact area with the concrete slab, And bonding the fastening members to the nuts buried in the grooves in order to fix the reinforced concrete structure. 13. The method of claim 12,
The step of wrapping and installing the sound-absorbing member includes the step of forming a plurality of through-holes arranged at a predetermined interval in the sound-absorbing member,
Wherein the step of installing the mesh member comprises a plurality of mesh members having different sizes of eyes or arranging eyes of the same size differently from each other. 13. The method of claim 12,
And mixing and installing a sound absorbing material selected from vinyl chloride, polymeric rubber, sound insulating material selected from iron powder, melamine foam having a porous structure, expanded polystyrene, and PP microfine fiber to increase the surface density of the composite mortar layer Interlayer Noise Reduction Method of Reinforced Concrete Buildings.

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