KR20060127511A - A flooring system and its construction process for impact-noise reduction - Google Patents

Abstract

A construction method for interlayer noise prevention using injection moldings is provided to reduce a period of construction and to absorb interlayer noise effectively by placing a lower plate, placing polyurethane foams in the lower plate and assembling an upper plate. A construction method for interlayer noise prevention using injection moldings comprises the steps of fixing the standard and shape of prefabricated injection moldings, manufacturing injection moldings for an upper plate(10) and a lower plate(20) in the fixed standard and shape using a mixture of 70~85 weight percent polypropylene resins and 15~30 weight percent inorganic filler, manufacturing compressed polyurethane foams in the enough size to be inserted to the lower plate by mixing and compressing a mixture of 70~84 weight percent waste synthetic resin foamed and crushed materials and 15~29 weight percent porous carbon with adhesives, securing a sound absorption layer on the upper part of a reinforced concrete slab and filling up with sound absorbing materials(40) in 30Œ20 millimeters, arranging the injecting moldings for a lower plate on the upper part of the sound absorbing materials and placing the compressed polyurethane foams in the lower plate, and assembling an upper plate and sealing up an assembly, each corner and a gap with sealant such as urethane, etc.

Description

Construction method for preventing noise between layers by injection molding {A flooring system and its construction process for impact-noise reduction}

1: Field construction embodiment example of the floor impact sound blocking structure of the present application

2 is an exemplary view of a unit sound insulation structure of the present application.

3 is a view illustrating an embodiment of a foam compact structure of the present application

4 is a diagram illustrating another embodiment of the unit sound insulation material structure of the present application.

5 is an embodiment in which the unit soundproofing material of the present application is constructed in the field.

6 is an enlarged photograph of a grain structure showing a bonding state of a PP soundproof material of the present application.

** Description of the main symbols in the drawings **

10: upper plate portion 11: upper plate bent portion

12: upper plate engaging projection 20: lower plate

21: bottom plate bottom plate 22: protrusion base

23: lower plate concave coupling portion 24: lower plate convex coupling portion

25: bottom plate bottom hole 30: waste resin pressurized foam

31: compressed foam of flat structure 32: compressed foam of protrusion structure

33: bone bent compression foam 50: unit noise soundproofing

The present invention obtains the interlayer noise reduction material which reduces the interlayer noise by using polypropylene resin injection molding and waste resin pressurized foam foam in the method for reducing the interlayer noise in various building structures, and the floor floated by using the interlayer noise prevention material. It relates to a construction method for providing a floor impact sound blocking structure by the construction method.

In general, as buildings, such as apartments, villas, multi-family houses, apartment buildings, officetels, and schools are becoming larger, higher, and higher, the floor shocks and other noises generated from the upper floors are directly transmitted to residents and users directly below. The reality is that today's damages occur, sometimes sparked by conflict, and emerge as new social and environmental issues.

It is well known that most buildings have been constructed as concrete structures for economics and mass supply since the beginning of mass supply of multi-unit houses. Although the reduction is good for the transmitted noise, the impact sound generated when the impact is directly applied to the concrete has a characteristic that is easily transmitted to the adjacent generation and the lower floor.

These noises can be divided into light impact sounds and heavy impact sounds, which are tapping machines such as plates, cutlery, chair pulls, and sounds of walking on the floor with plastic sandals. The impact sound is measured by using as a shock source, and the heavy shock sound is a shock sound measured by using a tire as a shock source as a thumping bass sound such as children's running sound, running, walking, and dropping a basketball.

In response to the development of the industrial society, large-scale apartments were constructed, and disputes caused by the impact noise between floor tenants were continuously raised. In May 2004, the government proposed a standard floor plan and set the floor plate thickness to 180 mm. The noise level between floors is less than 58 decibels (dB), and the heavy impact sound (running or rolling) is less than 50 decibels. Light impact shocks were immediately applied and heavy impact sounds were enacted in July 2005. However, even if the weight impact sound standard is smaller than the current (150 mm ~ 180 mm) due to resonance in a small space such as a bedroom, it is difficult to meet the weight shock sound standard. Expert meetings of associations, researchers, etc. provide a 30mm thicker "standard floor structure" that can satisfy the heavy impact sound in the living room, and should be 50dB or less with respect to the heavy impact sound standard or comply with the standard floor structure. Legislative notice ('05 .4.12 ~ 5.2) was prepared and revised the regulations on housing construction standards.

When applying the 'standard floor plan', the construction company constructs the slab with 210mm thickness when constructing the building, or adopts the slab thickness arbitrarily, but meets the criteria of less than 58dB of light noise and less than 50dB of weight noise. In order to increase the thickness of the slab, the construction cost is high. Therefore, the noise reduction standard has emerged as the most urgent issue to be solved by the contractor.

Therefore, the problem of reducing the light impact sound and the heavy impact sound between the floors of the building has been a long-time problem of the construction company, and in the meantime, in order to reduce the noise, the boards formed of the glass cotton yarn and the elastic members inside the board Although the interlayer noise reduction material for embedding has been disclosed, glass cotton yarn has a disadvantage of being very vulnerable to moisture, and its effect is not significant compared to the complicated and cumbersome process of sealing it with a waterproof member that prevents water penetration such as waterproof wrapping paper or vinyl. there was.

In addition, some European advanced countries, such as Germany and France, have attempted to solve the noise problem by adopting a flooring method to reduce the noise between floors.However, this flooring structure is constructed with vibration dampening materials such as glass wool or rock wool on the slab. After that, glass or rock wool is used as a method to reduce floor impact sound by forming a floor interior material layer. Recently, glass fiber or rock wool contains carcinogens, and its use is regulated worldwide and the construction environment is bad. It is avoiding its use, and it is difficult to apply because Korea uses unique lightweight foam concrete pouring method.

On the other hand, rubber anti-vibration plates and styrofoam have been suggested as alternatives, but styrofoam has excellent thermal insulation, but it does not have soundproofing and dustproof performance, making it impossible to use it as a dustproof material. The rubber soundproof dustproof material blended has been disclosed and used in part, but its value is expensive and thus it is not finding profitability. Also, Korean Laid-Open Patent Publication No. 2001-74153 has a floor insulation soundproofing made of a plurality of polyethylene foam layers and polypropylene layers. Although a dustproof material is disclosed, it is difficult to apply the soundproof effect is not large compared to a complicated and cumbersome process.

In the meantime, research to reduce the noise between floors has been actively conducted, and Patent 1999-43687 provides a perforated glass fiber polyurethane foam sound absorbing panel for building, which is used as a sound absorbing material used for interior and exterior finishing materials on ceilings and walls of buildings. There was an attempt to absorb noise between floors, which is a pollution of residential environment, and in Patent 1998-10751, there was an attempt to provide a product having soundproofing effect and economy by providing a lightweight soundproof concrete panel. Patent 2001-723 discloses a sound absorbing plate using foamed ceramics, and an attempt has been made to provide a sound absorbing plate formed of an artificial lightweight aggregate of a sound absorbing material installed inside a housing, and Patent 2001-17939 discloses a light absorbing plate for a sound absorbing and sound insulating module. Light weight porosity for sound absorption and sound insulation modules with excellent porous sound absorption and sound insulation There have been attempts to provide sex aggregates, and structures that partially satisfy floor noise have been provided, but in reality, most of them are not adaptable due to economic problems, and some of the items that can be adapted to the site do not provide the expected noise reduction. I had a hard time.

The present application was devised to solve the above problems, etc. The interlayer noise prevention material of the present application and the construction method using the same are the prefabricated type to be applied here through the estimation of the interlayer noise prevention construction section of the site to be constructed first. The polypropylene resin injection molding and waste resin pressurized foam foam are prepared and prepared, and at the construction site, a space is formed by spaced a certain distance between the reinforced concrete slab and the noise suppression material in order to apply the floating floor deformation method. Fill the sound-absorbing material into a certain thickness, and assemble the injection molding and the press-foamed foam obtained in the preparation process on the upper part, and seal the granulated material and each corner part and the gap part with a suture such as urethane to generate the upper and lower floors of the building. It is to provide a construction method for reducing the noise between the floors.

In addition, the construction method of the present application is to modify the conventional floating method technology to apply a sound absorbing material selected from volcanic stone, palm coal, sand between the spaced apart the predetermined distance on the bottom of the lower part of the injection molding and the slab. It is to be used alone or to combine the two or three to achieve a flooring method, the technical idea of the present invention is to combine the polypropylene injection molding + waste resin compression foam foam + sound absorbing materials such as volcanic stone, coconut coal + floating floor method It is an object of the present invention to provide an interlayer noise prevention construction method, characterized in that it blocks and reduces noise generated between layers.

The present invention as a means for solving the problems of the prior art and to achieve the object of the present invention as a means of interlayer noise prevention construction method for reducing the noise between floors in various building structures primarily grasp the required area of the inter-layer noise prevention construction zone of the building. To determine the standard and shape of the prefabricated injection molding to be applied in the present application, to prevent the interlayer noise by using a mixture composition (1) of 70 to 85 parts by weight of polypropylene resin, 15 to 30 parts by weight of inorganic fillers Making an injection molding of the upper plate and the lower plate in the specifications and shapes specified above so as to be used in the third step, the adhesive raw material composition in 70 to 84 parts by weight of waste resin foam grinding material, 15 to 29 parts by weight of porous carbon (2) ) To obtain a pressurized foam by mixing and compressing, but the step of making it into a size that can be interpolated into the lower plate is prepared in advance, In the field to secure the sound absorbing material layer 30 ± 20 mm in the upper portion of the reinforced concrete slab to apply the modified floor method to the floor, and filling the sound absorbing material, the lower plate injection molding obtained in the second to the upper part of the sound absorbing material as a prefabricated arrangement and into the bottom plate It provides a method of preventing interlayer noise comprising the step of embedding the compressed foam, the step of assembling the top plate after the foam foam is embedded, and sealing the assembly and each corner portion, the gap portion with a suture such as urethane. Forming protrusions on the bottom of the bottom plate of the injection molding lower plate and the bottom of the slab or by interposing a packing material having elasticity to create a sound absorbing material layer in a structure spaced apart a certain distance and the sound absorbing material layer is volcanic stone, palm coal, sand Select from among and use alone or in combination to use as sound absorbing material The interlayer noise reduction construction method of a building, characterized in that there is provided.

In detail by dividing each of the above steps, as a preliminary preparation step, the first step is to determine the size and shape of the prefabricated injection molding to be applied in the present application by grasping the required area of the noise prevention construction section of the building, and the second poly 70-85 parts by weight of propylene resin and 15-30 parts by weight of inorganic fillers are used to make the interlayer noise prevention to make injection moldings of upper and lower plates with the specifications and shapes specified in the above design process. In the third step, 70 to 85 parts by weight of the waste synthetic resin foam crushed material and 15 to 30 parts by weight of porous carbon are mixed and compressed with an adhesive to obtain a foam, but to a size that can be interpolated into the lower plate. The steps to make the compressed foam are prepared to be done in advance.

In the construction site, in order to apply the modified flooring method, the sound absorbing material layer is secured to about 30 ± 20 mm on the upper part of the reinforced concrete slab, and the sound absorbing material is filled to about 20 ± 10 mm. Prefabricated arrangement and embedding the compressed foam into the bottom plate, the foam is assembled between the upper plate, and the interior of the building having the step of sealing the assembly and each corner portion, the gap portion with a suture such as urethane. To provide a noise prevention construction method.

In the present application, the environmental pollution problem caused by polyurethane foam waste has been seriously raised recently, and it is intended to promote its recycling. In particular, various kinds of discarded balls are collected in the coastal beach farm, and the size is pulverized to 1 to 15 mm. 70-85 parts by weight of waste synthetic resin foam and 15-30 parts by weight of porous carbon are mixed with the adhesive and compressed to obtain a foam, but the press foam is made to have a size that can be inserted into the lower plate. The bottom portion of the injection molding lower plate forms a protrusion to form a structure spaced apart from the slab bottom plate, or a sound absorbing material having a structure spaced apart by a distance between the bottom support portion and the slab bottom through an elastic packing material. You can make a layer and choose between volcanic stone, palm coal and sand Is used or will or in combination of two or three of them on the technical spirit that is characterized by using a sound-absorbing material with.

The polypropylene resin injection molding upper plate is formed to have an uneven portion or a curved portion at a predetermined interval to the surface to maximize the vibration distance of the noise source to increase the noise blocking effect, and the lower portion is formed to have a protrusion to be assembled with the lower plate. The lower plate of the polypropylene resin injection molding has protrusions at the bottom base at intervals of 10 to 30 cm or holes (holes) are formed at the bases at intervals of 10 to 30 cm depending on the size of the injection molding so that the elastic material packing protrusions support the holes (holes). It is made to have a structure spaced apart from the floor by a certain distance to achieve the interlayer noise prevention structure of the present application.

Polypropylene resin is a kind of general purpose plastic that is widely used in the fields of automobiles and electric parts in the form of injection molded products due to its excellent processing characteristics, chemical resistance, weather resistance, and high slidability, and in recent years, flame retardancy, heat resistance, high rigidity In order to give high impact, long-term weather resistance, etc., it is tried and used for various purposes in search of new functions and uses, and in particular, it is being used for building materials and industrial materials.

In order to give a sound absorbing effect to the polypropylene copolymer, lead powder, lead compound, iron powder, iron oxide slug, barite (barium sulfate), talc and the like may be used as inorganic fillers, and these components may be used alone or in combination. Can be used.

In addition, as the level of culture has improved in recent years, there are many cases where a soundproofed room is required even in a residential environment. In other words, a living room, a music room, a movie room, etc. need to block other spaces and noises. You need to take action.

In this application, it is important that no harmful gas or black smoke is generated in the building of the multi-use facility in case of fire. Therefore, a certain amount of flame retardant may be used when necessary for the interlayer noise suppressant of the present application. In order to improve, a halogen-based organic flame retardant or phosphorus, antimony trioxide or the like can be used in combination.

As the halogen-based organic flame retardant used in the present invention, chlorinated paraffin, decabromodiphenyl ether, tetrabromobisphenol and the like can be used.

In addition to the above composition, the resin composition of the present invention may optionally contain one or more of primary and secondary antioxidants, lubricants and slip agents in a range of 0.1 to 5.0 parts by weight based on 100 parts by weight of the total of the polypropylene resin and the inorganic mixture. May be included in addition.

The inventors of the present application, while obtaining the optimal soundproofing effect using the above raw materials, while researching through various raw material combinations and experiments to obtain the interlayer soundproofing material that is easy to be installed in the field, In order to reduce the noise between layers, the appropriate amount of polypropylene resin and inorganic fillers are mixed in the interlayer noise prevention material structure to obtain upper and lower injection moldings in a certain size and shape so that they can be used for preventing noise between layers. Compressed and mixed with porous carbons and adhesives to obtain a compression foam, but to obtain a size that can be interpolated in the lower plate, and the waste resin compression foam is embedded between the upper and lower injection molding between the upper and lower floors of the building. In order to complete the invention and to confirm that the above object can be achieved when the structure to reduce the noise generated between the layers Reached.

The polypropylene resin injection molding can be obtained by dividing the upper plate and the lower plate, the upper plate is formed to block the noise by maximizing the vibration distance of the noise source by forming a bent portion or uneven portion at a predetermined interval to the surface, the bottom of the upper plate and The upper plate is injection molded to have a protrusion to be assembled, and the polypropylene resin lower plate injection molding is formed in a quadrangular shape of the lower plate to embed the waste resin compression foam foam, and the side wall part of the lower plate is combined with the supporting jaw to be assembled with the upper plate. The bottom part of the bottom plate has a bottom support part at intervals of about 10 to 30 cm, but the bottom support part forms a protrusion at the bottom of the bottom plate to form a structure spaced apart from the slab bottom surface, or a rubber packing material having elasticity. The bottom part of the elastic rubber packing to achieve a structure spaced apart by a certain distance Supported by the slab bottom layer, the upper portion has a protrusion and the end portion of the protrusion may be coupled to a hole (hole) formed in the bottom support portion of the lower part of the injection molding to form a structure for forming the elastic support.

Hereinafter, one embodiment performed to specifically support the technical idea of the present invention will be described with reference to the accompanying drawings.

Example 1

Using the composition mixed in the polypropylene resin as follows, the prefabricated sound insulation injection molding plate of the horizontal × vertical × height = 450 × 450 × 35 mm shown in Figure 2 was divided into the upper plate and the lower plate to injection molding.

The raw material blending ratio of the injection molding of the upper plate and the lower plate of the present application is 73 parts by weight of polypropylene resin, 20 parts by weight of barium sulfate, 5 parts by weight of decabrom, and 2 parts by weight of antimony trioxide as shown in FIG. The upper plate portion 10 and the lower plate portion 20 are obtained as described above, and the upper plate portion 10 is formed to form the upper plate curved portion at a predetermined interval to the surface to maximize the vibration distance of the air sound to give an effect of blocking the air sound. The bottom surface of the upper plate portion has a structure having a top plate engaging protrusion 12 coupled with the bottom plate 20 to obtain an upper injection molded article, and a plurality of holes as the bottom plate 21 of the lower plate portion of the injection molded lower plate 20. (25) forms a structure in which the waste resin foam compression article (30) is built in a quadrangular shape on the upper side, and the bottom plate has a bottom plate engaging protrusion coupled to the engaging protrusion (12) of the upper plate. (21) On the bottom side An injection-molded product having a projecting support portion 22 forming a bottom support portion at intervals of about 10 to 25 cm was obtained.

The protruding portion 22 of the bottom of the injection molding is made to be spaced a certain distance between the slab bottom and the injection molding which is an interlayer noise reducing material of the present application, or an elastic packing is provided between the base of the injection molding and the slab bottom. It is also possible to achieve a structure in which the interlayer noise reducing material injection molding of the present application is spaced apart from the slab bottom surface by a certain distance.

Looking at the support structure in which the interlayer noise reducing material injection molding of the present application is spaced a certain distance from the bottom of the slab, the noise reducing material injection molding of the present application can be injection molded and designed to a suitable size according to the situation and the condition of the site to be constructed. Depending on the size, the bottom support portion of the bottom plate at intervals of about 10-25 cm may form a protrusion in the form of a cone, a polygonal pillar, a polygonal pyramid, a cylinder, or the like to form a structure spaced apart from the bottom surface of the slab.

In addition, the bottom plate 21 of the lower part of the injection molding lower injection material of the present application forms a hole 25 at a predetermined interval, but simply has a simple structure to form a hole (hole) at a predetermined distance to the flat plate or the lower part of the injection molding The bottom plate may be formed to form an uneven portion in the same shape as the top plate or to form a slate bent portion to maximize the vibration distance of the noise generated between the layers to achieve a structure that can give a noise blocking effect.

Example 2

In consideration of the recent situation of environmental pollution caused by polyurethane foam waste, the company intends to promote recycling of waste resins. In particular, various areas that are discarded in coastal fish farms are collected and the size is 1 ~ 15mm. Pulverized with waste resin foam: 73 parts by weight, activated carbon with porous material: 20 parts by weight, 5 parts by weight of TCPP (phosphate-based, chlorine-based mixture) as a flame retardant, and 2 parts by weight of urethane-based adhesive. The compressed foam (30) was obtained.

Example 3

In order to test the sound insulation effect of the soundproofing material developed in this application, the upper and lower plate width × length × height = 450 In order to apply the modified construction method of the present method by embedding the waste resin pressurized foam in a × 450 × 35 mm standard product, the bottom part of the lower part of the injection plate is spaced 30 mm from the slab bottom surface, and the volcanic stone and palm coal are separated from each other. 1: 1 ratio, filled with 20mm, + layered noise suppression material 35mm + cement mortar 45mm + floor finishing material in the order of the average light weight noise 52dB, average weight noise 45dB was obtained .

It will be described in detail based on the drawings presented to show the technical spirit of the present invention in detail.

Figure 1 shows an embodiment of the construction site to form the floor shock sound blocking structure of the present application, in general, the floor structure of the building without the conventional floor noise regulation slab (slab) to form each floor according to the use or scale of the building ), The thickness of floor houses is generally 135mm between floor slabs, 30mm of Schiropol insulation on top of them, and 35mm of foam concrete on top of them, and 45mm of finishing mortar on top of them. Although there were many specifications to be constructed, in the present application, the upper plate 10 and the lower plate 20 of the polypropylene resin injection molded material obtained in Examples 1 and 2 in the upper part where the reinforced concrete slab 60 was cast to 150 mm in width × length × height = In order to apply the modified construction method of the present disclosure by embedding the waste resin compression foam 30 in a 450 × 450 × 35 mm standard product, the bottom part of the injection molding lower plate 20 It is configured to extend the protruding portion 22 to be spaced apart 30mm from the bottom surface of the slab 60, filling the sound-absorbing material 40 mixed with volcanic stone and palm coal in a 1: 1 ratio to 20mm, The upper plate 10 and the lower plate 20 of 35 mm of unit noise suppression material 50 formed by embedding the waste resin compressible foam 30 filled therein are assembled and assembled, and the assembly, each corner portion, and the gap portion. For example, after sealing with a sealing material such as urethane, and fill the cement mortar layer (70) 45mm in order to install in the bottom finish material 80 in order.

Figure 2 shows an exemplary view of the unit sound insulation material structure of the present application, Figure 2a is a perspective view of the unit sound insulation material structure, 2b is an exploded front view of the unit sound insulation material structure, 2c is an exploded perspective view of the unit sound insulation material structure bar The unit soundproof material injection molding of the present application is divided into an upper plate portion 10 and a lower plate portion 20 and injection molded, and a unit sound insulation material 50 having a structure in which a compressed foamed product 30 is separately produced between the upper plate portion and the lower plate portion. Shown an embodiment that can be configured, the upper plate portion 10 is formed to form the bent portion 11 at a predetermined interval to the surface to maximize the vibration distance of the air sound to give the effect of blocking the air sound, The bottom surface of the upper plate portion has a structure having a coupling protrusion 12 coupled to the lower plate portion 20 or a structure that can be coupled to the lower plate portion through screwing. .

In addition, the lower plate portion 20 forms a structure in which the waste resin compressed foam 30 is built in a quadrangular shape toward the upper side of the bottom plate 21 and forms a structure that can be combined with the upper plate portion to be combined with the upper plate portion. The bottom of the plate 21 has a protruding portion 22 at intervals of about 10 to 30 cm, and the protruding portion 22 has a conical shape, a polygonal pillar, a polygonal pyramid, so that the slab bottom portion and the unit soundproofing injection molding are spaced a predetermined distance apart. An injection molded product having a structure of the protruding portion 22 having protrusions formed in a cylinder or the like may be used.

FIG. 3 shows the waste resin pressurized foamed product 30 which can be filled in the upper and lower portions of the unit soundproofing material of the present application. 3a shows a compressed foam 31 having a flat plate structure, and 3b a compressed foam having protrusions. 32) shows an example of the compressed foam 33 having a slate valley shape bent portion.

Figure 4 shows another embodiment for giving the ease of field construction in the unit soundproof material structure of the present application, the top plate portion 10 has a projection 11 and the compression foam 33 having a slate valley shape bent Holes 25 are formed in the bottom plate 21 of the lower plate portion 20 to be built in a predetermined distance, and one side (for example, right and lower sides) of the side plate portion of the lower plate portion forms a recess 23. One embodiment (for example, upper, left) is shown an embodiment of another unit noise suppression material 50 coupling structure that can be configured to facilitate the construction in the field by forming the convex portion 24 later.

FIG. 5 shows an embodiment in which the noise suppression material 50 of FIG. 4 is assembled and constructed in the field. The lower plate recess 23 and the lower plate convex are formed in one side of the side wall of the lower plate 20. Arrange the unit 24 in a prefabricated manner, and the unit soundproofing material (50) structure is formed in a structure that incorporates the compressed foam (30) on the bottom surface of the lower plate portion and combines the upper plate (10) having the projection (11) The construction of the unit sound insulation material is loaded and assembled in the shape of FIG. 5, the assembly and each corner portion and the gap portion are sealed with sutures such as urethane, and then the cement mortar is filled thereon and finished. One embodiment that can be constructed through a process is presented.

Figure 6 is a photograph photographing the dispersion of the composition of the polypropylene resin blended in Example 1 of the present application: 73 parts by weight, barium sulfate: 20 parts by weight, decabrom: 5 parts by weight, antimony trioxide: 2 parts by weight to be.

That is, the technical idea of the present application is to obtain the upper and lower parts of the injection molded product in a rectangular or square shape by using a polypropylene resin, and the upper and lower plates are assembled by a certain standard (for example, width × length × height = 450 × 450 × 35 mm). By constructing the unit goods, the lower floor of the prefabricated interlayer soundproofing material of the main body is arranged on the slab between the building and the floor of the building first, and then the waste plate press foamed product is built into the lower board, and then the top plate is assembled. While reducing the construction period between floors of buildings, it will provide floor noise reduction materials that can satisfy the noise regulation of floors and provide a method of using the same.

To test the flame retardancy of the unit soundproof material of the present application, when the sheet test piece obtained from the polypropylene resin composition is kept horizontal, the end of the flame length of the Bunsen burner reaches the bottom of the sample piece and the flame is removed after 15 seconds. The combustion was investigated and it was confirmed that the inventors expected a flame retardant effect.

The interlayer noise prevention material of the present application grasps the installation section of the soundproofing material in the field before the site construction and designs the specifications of the injection molding using polypropylene resin according to the site conditions so that the upper plate and the lower plate are manufactured to form a prefabricated unit article in a rectangular or square shape. During the construction of the building, the lower panel of the prefabricated interlayer soundproofing material is arranged between the floor and the floor of the building slab, and then the polyurethane foam is built into the lower panel, followed by the assembly of the upper panel. This will provide a method that will significantly shorten and satisfy the interlayer noise regulation.

In addition, the thickness of the slab that forms each floor varies according to the use or scale of the building, and the thickness of the slab that forms the floor is generally 150mm + foam concrete 50mm in the case of apartment houses. + Finishing mortar 40mm + Floor finishing material has been applied mainly, when the new 'standard floor plan' construction companies should meet the criteria of less than 58dB of light noise, less than 50dB of heavy noise, In case of using the unit soundproof material of the present application, the slab 150mm + sound absorbing material layer 30mm for modifying the floating method + 35mm of the interlayer noise prevention material (soundproof panel) of the present application + mortar 45mm of the finish cement + floor finishing material We confirmed the effect that can meet the criteria of less than 58dB of light noise, less than 50dB of heavy noise.

Claims (2)

In the noise reduction construction method for reducing the interlayer noise on the slab of various building structures, First, determine the size and shape of the prefabricated injection molding to be applied here by grasping the required area of the building's noise prevention construction section (preliminary preparation stage), Secondly, the upper and lower plates are injected with the specifications and shapes specified above so as to be used for the prevention of interlayer noise using a compound composition (1) of 70 to 85 parts by weight of polypropylene resin and 15 to 30 parts by weight of inorganic fillers. Creating moldings (preliminary preparation), Thirdly, the adhesive raw material composition (2) is mixed and compressed to 70 to 84 parts by weight of waste resin foamed crushed product and 15 to 29 parts by weight of porous carbon to obtain a pressurized foamed product, which is sized to be inserted into the lower plate. (Preliminary preparation phase), In the construction site, the sound absorbing material layer is secured by filling the sound absorbing material with 30 ± 20 mm on the upper part of the reinforced concrete slab in order to apply the modified floor method. Assembling the lower plate injection molding obtained in the secondary to the upper portion of the sound absorbing material in a prefabricated manner and embedding the compressed foam product into the lower plate, Method of preventing interlayer noise of buildings, comprising the steps of assembling the top plate after the foam foam and sealing the assembly and each corner portion and the gap portion with a suture such as urethane. The method of claim 1, Between the bottom support part of slab bottom of slab and slab bottom, a projection is formed at the bottom of bottom plate or intervening elastic packing material to make a sound absorbing material layer in a spaced distance.The sound absorbing material layer is composed of volcanic stone, palm coal, sand Method for preventing noise between floors of a building, characterized in that used alone or in combination as a sound absorbing material.

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