TWI777892B - Building floor slabs for sound-absorbing and soundproofing - Google Patents

Abstract

A sound-absorbing and sound-absorbing object for a floor slab of a building is composed of at least one sound-absorbing and sound-absorbing board and an upper fixed layer. The sound-absorbing and sound-absorbing board is at least composed of a non-woven fabric layer and an inner film layer, and is divided into equal arrays, each square array. The center is a raised arc flange, and the four corners are slightly lowered into a connecting mound, which is connected to form a square area, and the surrounding is connected with a shield strip. The outermost periphery; the upper fixed layer is composed of a concrete and a fiber cotton ball, and the fiber cotton ball is formed by irregularly splitting non-woven lamination blocks; the sound absorption and sound insulation boards are arranged and laid on the floor slab with the arc flange facing upwards Then, most of the fiber cotton balls, the concrete and the water are mixed and stirred evenly, and then flatly filled on the sound-absorbing and sound-absorbing board, and the sound-absorbing and sound-absorbing object is formed after drying.

Description

Building floor slabs for sound-absorbing and soundproofing

The invention relates to a sound-absorbing and sound-absorbing object for building floor boards, in particular to a sound-absorbing and sound-absorbing object for building floor boards that can enhance the sound-absorbing and sound-absorbing effect of floor boards.

Press, when the building is completed, the space between the upper and lower floors is the "floor board". For the upper-floor residents, the "floor slab" separated from the lower floor is the floor, and for the lower-floor residents, the "floor slab" separated from the upper floor is the ceiling. Combined, so the floor plate is a hard solid, and it is also a good conductor of sound waves. For building users (generally referred to as residents), the most troublesome is the direct conduction of various motion sounds of the upper-floor residents from the ceiling, such as: children running, pets running and jumping, heavy objects falling, dragging The sound of heavy objects --- and so on. In order to avoid this kind of trouble and break the good relationship between the residents, as shown in Figure 1, the upper-level residents who are more considerate of others may lay a carpet 70 or similar floor coverings on the floor to prevent or Slow down the transmission of sound. However, the carpet 70 or similar floor coverings tend to accumulate dust and dirt over time, and it is difficult to clean or clean. Furthermore, the carpet 70 or similar floor coverings cannot completely block the transmission of sound. When the upper-level households have heavy objects falling, there is still dull noise, so there are still problems in use. In fact, in addition to the various movement sounds directly transmitted from the upper floor through the ceiling, which troubles the lower-floor residents, sometimes the sounds made by the lower-floor residents in the space will also trouble the upper-floor residents through the ceiling, such as the sound of the lower-floor residents practicing the piano. , recitation, singing, PARTY joy, pet barking---etc. It can be seen that the phenomenon that the floor slab easily conducts sound troubles the residents on the upper and lower floors at the same time. Therefore, in order to slow down the noise conduction of floor slabs, some lower-floor residents often use construction equipment as shown in Figure 1. Decorate or use light steel frame to lay flat-type sound-absorbing panels 80 sound insulation facilities in an attempt to slow down, but the sound insulation effect is actually obviously poor.

In addition to laying carpets 70 or similar floor coverings, there are also various sound insulation objects with different structural compositions that have been disclosed to block or slow down the noise conduction of floor slabs. For example, there are sheets containing rubber materials as sound insulation material layers. , and pasted on the plastic floor tile layer composed of PVC bricks to form an object of sound insulation structure (disclosed in I736324), and a sound insulation object formed of a foamed polystyrene foam material into a block (disclosed in M506169) ), there are sound insulation objects mainly composed of cement foam bricks (disclosed in M581616), and sound insulation objects mainly composed of sound insulation and shockproof pads with sound insulation and shockproof effect (disclosed in M594042), and more hollow The space structure is used as a sound insulation object (disclosed in M617705), and there are other materials such as rubber layer, rubber pad, plastic pad, foam pad, polyester fiber pad, needle blanket cotton pad as the composition of the sound insulation and shockproof pad (M620748 It can be said that there are many different structures of floor panel sound insulation, but their sound insulation effect is quite uneven. It is worth to develop a really effective sound insulation object to benefit many residents.

In view of the lack of easy sound conduction of building floor slabs, the inventors of the present invention have carried out research and development improvements, hoping to provide an object that can improve the sound absorption and sound insulation effect of floor slabs.

Therefore, the main purpose of the present invention is to provide an object that can improve the sound absorption and sound insulation effect of floor boards.

In order to achieve the above purpose, the present inventor specially created a sound-absorbing and sound-absorbing object for building floor slabs, which is composed of at least one sound-absorbing and sound-absorbing board and an upper fixed layer, wherein the internal structure of the sound-absorbing and sound-absorbing board is at least composed of a non-woven fabric layer and a The inner film layer is composed of the non-woven layer board, which is made of non-woven fabric by the non-woven method. The cloth laminated block is heated and pressed to form the non-woven laminate, the inner film layer is attached to the bottom surface of the non-woven laminated block, and is jointly formed into the sound-absorbing and sound-absorbing board after being heated and pressed together. The external structure is divided into equirectangular arrays, and each square array block has a circular arc flange raised in the center. The four corners of the arc flange are slightly lowered to form a connecting mound. The connecting hills are connected continuously to form a square area, and the surrounding area is connected with a shield strip. The shield strip is used to separate different square blocks and surrounds the outermost periphery of the sound-absorbing and sound-absorbing board; the upper fixed layer is made of a concrete and a shield. A fiber cotton ball, the concrete is made by mixing cement and fine sand, the fiber cotton ball is a non-woven layered block made of non-woven fabric method, and the block after irregular cutting; The boards are arranged and laid on the surface of the floor slab with the arc flange facing upwards, and then a large number of fiber cotton balls, the concrete and the water are evenly mixed and stirred, and then flatly filled on the sound-absorbing and sound-absorbing board, waiting for After drying, the sound-absorbing and sound-absorbing object is formed.

In the above-mentioned building floor board sound-absorbing and sound-absorbing object, the non-woven fabric layer of the sound-absorbing and sound-absorbing board and the upper and lower surfaces of the inner film layer can be attached to the upper surface layer, and are jointly molded into the sound-absorbing material through thermal drying and pressing. Acoustic panels.

In the above-mentioned building floor slab sound-absorbing and sound-insulating object, the inner film layer is a polyethylene film, and the thickness is between 0.009mm and 0.1mm.

In the above-mentioned building floor slab sound-absorbing and sound-absorbing material, the sound-absorbing and sound-absorbing material includes a sound-absorbing cotton layer and a sound-absorbing cotton layer, the sound-absorbing cotton layer is a fiber cotton layer with sound-absorbing effect, and the sound-absorbing cotton layer is a fiber cotton layer with sound-absorbing effect. When applied, the sound-absorbing cotton layer is arranged and laid on the surface of the floor board, and then the sound-absorbing cotton layer is laid on the sound-absorbing cotton layer, and then the sound-absorbing and sound-absorbing board is arranged with the arc flange facing upward. On the sound insulation cotton layer, a large number of fiber cotton balls are evenly mixed with the concrete and a water solution, and then flatly filled on the sound absorption and sound insulation board, and the sound absorption and sound insulation object is formed after drying.

Among the above-mentioned building floor slab sound-absorbing and sound-absorbing objects, the sound-absorbing and sound-absorbing object includes a styrofoam edge strip, which is placed flat around the floor slab during application, and then placed on the edge of the styrofoam edge. Lay the sound-absorbing and sound-absorbing objects within the defined range.

In the above-mentioned building floor slab sound-absorbing and sound-absorbing object, the external structure of the sound-absorbing and sound-absorbing board is divided into an equal-line square array, which can be a 9 x 9 square array, a 7 x 7 square array, a 5 x 5 square array, and a 3 x 3 square array. Any of the square arrays.

1: Absorb soundproof objects

10: Suction sound insulation board

11: Arc flange

12: Connect mounds

13: Shield Strip

16: Non-woven laminate

17: inner film layer

18: Surface

20: Upper fixed layer

21: Concrete

22: Fiber cotton balls

30: Sound-absorbing cotton layer

40: Sound insulation cotton layer

50: Styrofoam side strips

70: Carpet

80: Sound-absorbing panels

FIG. 1 is a schematic diagram of laying carpets in the upper space of a conventional floor slab and erecting sound-absorbing panels in the lower space.

Fig. 2 shows a schematic diagram of laying the sound-absorbing and sound-absorbing object of the present invention on the ground in the upper space of the floor slab.

FIG. 3 is an exploded perspective view of the sound-absorbing and sound-absorbing object of the present invention.

FIG. 4 is a perspective view of the 9 x 9 equal-column square array of the sound-absorbing and sound-absorbing panels according to the present invention.

FIG. 5 is a cross-sectional view taken along line A-A in FIG. 4 .

FIG. 6 is a sectional view taken along line B-B in FIG. 4 .

FIG. 7 is an enlarged view of part C in FIG. 4 .

FIG. 8 is a cross-sectional view of the internal structure of the sound-absorbing and sound-absorbing board in the present invention.

Fig. 9 is an enlarged view of a part of the sound-absorbing and sound-absorbing object of the present invention being laid on the ground in the upper space of the floor slab.

FIG. 10 is a schematic diagram of the material preparation process of the upper fixed layer in the present invention.

Figure 11 is a schematic diagram showing the irregular appearance of the fiber cotton ball in the present invention.

FIG. 12 is a cross-sectional view of the upper fixed layer structure in the present invention.

FIG. 13 is a perspective view of the sound insulation board in the present invention, which is a 7 x 7 equal-column square array.

FIG. 14 is a perspective view of the sound insulation board partitioned as a 5 x 5 square array in equal rows in the present invention.

FIG. 15 is a perspective view showing that the partition of the sound insulation board is a 3 x 3 square array in equal rows according to the present invention.

Figure 16 is a schematic diagram of the present invention where the sound-absorbing and sound-absorbing board is erected above the lower space of the floor board.

Regarding the technical means adopted by the present invention to achieve the above-mentioned objects and the attainable effects, the following preferred feasible embodiments are described in detail below with the accompanying drawings for easy understanding.

The present invention seeks a sound-absorbing and sound-absorbing object 1 laid on a floor plate to improve the sound-absorbing and sound-absorbing effect. As shown in FIG. 2 and FIG. Composition, wherein, as shown in FIG. 4 to FIG. 7 , the sound-absorbing and sound-absorbing panels 10 are divided into equal-row square arrays, that is, when viewed from above, the “rows” and “columns” of the sound-absorbing and sound-absorbing plates 10 are composed of the same number of square array areas. Each square block has a circular arc flange 11 raised in the center, and the four corners of the circular arc flange 11 are slightly reduced in height to form a connecting mound 12, and the four connecting mounds 12 are connected to each other. The connection is a square area, and the surrounding area is connected with a shield strip 13, and the existence of the shield strip 13 forms a partition with other square blocks. The outermost periphery of the sound-absorbing and sound-absorbing board 10 is also surrounded by A shield of 13.

The structure of the sound-absorbing and sound-absorbing board 10 is shown in FIG. 8 , the sound-absorbing and sound-absorbing board 10 is at least composed of a non-woven fabric layer 16 and an inner film layer 17, and then a surface layer 18 can be added on the upper and lower outer surfaces to further Composition; The non-woven fabric laminate 16 is first manufactured into a "non-woven fabric laminate block" (this is not the non-woven fabric laminate 16) by collecting various fiber raw materials, and then adopting the non-woven fabric method. The fibers have been in a state of intertwined and intertwined, so they will not be loosened and show a fluffy phenomenon, and then the inner film layer 17 is pasted on one of the surfaces of the non-woven laminate block, and the inner film layer 17 can be poly Vinyl film, the thickness is between 0.009mm~0.1mm, and then the surface layer 18 is pasted on the outer surface of the non-woven fabric laminate and the inner film layer 17 to form a "substrate" together (this is not the time for the sound-absorbing and sound-absorbing board 10), the surface layer 18 is a thin layer (such as woven fabric) with decorative effect (such as color, pattern); then the "substrate" is softened by sufficient heat baking to make the non-woven fabric laminate, the inner film Layer 17 and the surface layer 18 are more closely attached In order to bond, the softened "substrate" is finally sent into a molding machine for pressing and molding. The molding machine is provided with a molding die that conforms to the shape and thickness of the finished product of the sound-absorbing and sound-absorbing board 10. Therefore, after pressing and molding, the original The fluffy "non-woven laminate" is formed into the non-woven laminate 16, and the previously softened "substrate" is also formed into the sound-absorbing and sound-absorbing board 10.

The upper fixing layer 20 is composed of a concrete 21 and a fiber cotton ball 22. Please refer to FIG. 9 to FIG. 12, wherein, FIG. 11 shows the material preparation process of the upper fixing layer 20. The concrete 21 is composed of cement and fine The powder material (as shown in Figure 10) formed by mixing and stirring the sand; the fiber cotton ball 22 is a "non-woven layered block" that is manufactured by the aforementioned and adopted non-woven method, and presents a fluffy state, after irregular cutting The small-volume blocks that become the majority are the fiber cotton balls 22 (as shown in Figures 10 and 11 ). Because the "non-woven fabric laminate blocks" are in a fluffy state, each small-volume block ( That is, the fiber cotton ball 22) still retains the characteristic of being intertwined and combined by most fibers and will not be loosened. In other words, each fiber cotton ball 22 is still formed by the non-woven method, and there are many irregularly interlaced fine spaces inside, And each fiber cotton ball 22 has elasticity that will recover after being squeezed and compressed. FIG. 11 shows that each fiber cotton ball 22 has an irregular appearance, and it can be seen that it is formed by a non-woven method. After the concrete 21 and the fiber cotton ball 22 are respectively prepared, they are stored in a dry state for later use.

The sound-absorbing and sound-absorbing object 1 is composed of at least the sound-absorbing and sound-absorbing board 10 and the upper fixing layer 20, and the sound-absorbing and sound-absorbing object 1 can further include a sound-absorbing cotton layer 30, a sound-absorbing cotton layer 40 and a polystyrene edge strip 50. As shown in FIG. 3 and FIG. 9 , the sound-absorbing cotton layer 30 is a fiber cotton layer with sound-absorbing effect, the sound-absorbing cotton layer 40 is a fiber cotton layer with sound-absorbing effect, and the styrofoam edge strip 50 is a long three-dimensional object .

The sound-absorbing and sound-absorbing object 1 is used on the floor board to improve the sound-absorbing and sound-absorbing effect. The schematic diagram of the application is shown in Figure 9. First, the styrofoam edge strip 50 is placed on the floor board The strip 50 may have a suitable width, and then the sound-absorbing cotton layer 30 is first used within the range defined by the Styrofoam edge strip 50 Lay on the floor board, and then lay the sound-insulating cotton layer 40 on the sound-absorbing cotton layer 30; When laying, the different sound-absorbing and sound-absorbing boards 10 can be bonded (for example, by means of Silica) to make them merged. Then further add the fiber cotton balls 22 of the majority in the concrete 21, and do uniform mixing and stirring to become a "mixing heap", then as shown in Figure 10 and Figure 12, add water into the "mixing pile" It is called "glue-like cotton ball concrete". At this time, the "glue-like cotton ball concrete" can be excavated and poured onto the sound-absorbing and sound-absorbing board 10. During operation, an appropriate amount of pushing force must be applied downward to make the "glue-like cotton ball concrete" filled with On the sound-absorbing and sound-absorbing board 10, during the process, the "glue-like cotton ball concrete" will enter into the space separated by most of the arc flanges 11 of the flat-laying sound-absorbing sound board 10, and it will be more upward than the space. The sound-absorbing and sound-absorbing board 10 is raised to an appropriate height, as shown in FIG. 9 , and finally the "glue-like cotton ball concrete" is solidified to suppress the sound-absorbing and sound-absorbing board 10, the sound-absorbing cotton layer 40 and the sound-absorbing cotton layer 30. By. When the application is completed and the original "glue-like cotton ball concrete" is completely dried, it becomes the upper fixed layer 20, and the top surface of the upper fixed layer 20 becomes the newly formed floor surface of the building space. It can be used for directly placing objects and walking. Of course, it can also further decorate wooden floors, paste plastic floors, or lay carpets, etc. It is not limited at all, but this is only a follow-up method, so I won't go into details.

When using the sound-absorbing and sound-absorbing object 1 of the present invention to be laid on the ground of the upper space of the building floor slab, it has the following effects:

1. Because the overall thickness of the sound-absorbing and sound-absorbing object 1 has been increased on the floor slab of the building, when the sound waves in the building space reach the surface of the sound-absorbing and sound-absorbing object 1, the increased thickness has the effect of blocking sound waves from passing downward. ; Even if there are still some sound waves will enter the interior of the upper fixed layer 20, but the sound waves that enter will enter the interior of the majority of the fiber cotton balls 22, and then generate the majority of fibers that are intertwined with the fiber cotton balls 22. The effect of friction and vibration causes the sound wave energy to be converted into heat energy and attenuate greatly, so that the sound wave amplitude becomes smaller, and the sound wave volume naturally becomes smaller.

2. During the process, part of the sound waves hit the dry concrete 21, so they are also blocked to reduce the amount of sound waves passing through; , the medium and low frequency sound waves have almost disappeared.

3. Even if there are still some sound waves (middle and high frequencies) that will pass through the upper fixing layer 20 to reach the sound-absorbing and sound-absorbing board 10, at this time, the sound waves first hit the inner film layer 17, so part of the sound waves will be affected by the inner film layer 17. The radian is reflected back to the upper fixed layer 20 to rub and oscillate again, and part of it enters the relatively finer inter-fiber space inside the inner film layer 17 to further rub and oscillate, so that the sound wave energy is absorbed and converted again and exhausted; The sound wave of the inner film layer 17 is only relatively high frequency, and the sound volume is not high because its energy has been greatly depleted. When the sound wave reaches the non-woven fabric layer 16, it rubs again with the numerous inter-fiber spaces in the non-woven layer plate 16. The vibration makes the sound wave energy more exhausted, causing the volume to be almost non-existent.

4. Even if there are still some relatively high-frequency sound waves with low energy passing through the non-woven laminate 16 to reach the arc-shaped space at the bottom of each arc flange 11, it will oscillate with the air existing in the arc-shaped space. , resulting in further depletion of the sound wave energy.

5. During the process, the arc flanges 11 , the connecting mounds 12 and the shield bars 13 in each square block of the sound-absorbing and sound-absorbing board 10 can reflect and absorb sound waves, so as to rapidly improve the sound-absorbing and sound-absorbing effect.

6. Lay the sound-insulating cotton layer 40 on the bottom of the sound-absorbing and sound-absorbing board 10 to reflect the sound waves passing through the sound-absorbing and sound-absorbing board 10 back into the sound-absorbing and sound-absorbing board 10, so that it is depleted again by friction and vibration; then the sound-absorbing The cotton layer 30 is laid between the floor board and the sound insulation cotton layer 40, and is used to consume and absorb the remaining sound waves passing through the sound insulation cotton layer 40, so that the sound waves that can still pass at the end are already weak. . However, it must be emphasized that the sound-absorbing and sound-absorbing board 10 can almost completely consume sound waves in actual implementation, so the composition of the sound-absorbing and sound-absorbing board 10 and the upper fixing layer 20 is the main feature of the present invention. Add the sound insulation cotton layer 40 And the laying of the sound-absorbing cotton layer 30 assists in producing a more reliable sound-absorbing and sound-absorbing effect, so the sound-absorbing cotton layer 40 and the sound-absorbing cotton layer 30 are subsidiary claims of the present invention.

7. Since the upper fixed layer 20 is composed of the concrete 21 and the fiber cotton balls 22, the added weight is relatively light (compared with the conventional consolidation by reinforced concrete), and the weight burden of the floor slab will not be increased. At the same time, the preparation cost can also be relatively reduced a lot; in addition, when the upper fixed layer 20 is consolidated, the glue of the concrete will enter the interior of the fiber cotton balls 22 to be consolidated, which is relatively composed of the majority of the fiber cotton balls 22. The concrete 21 is pulled in the direction, so the upper fixed layer 20 can have a solid load-bearing capacity as a whole. Even if the surface layer is trampled or loaded for a long time, there is no fear of cracking or internal cracking, and it can be used for a relatively long period of time.

As mentioned above, the whole of the sound-absorbing and sound-absorbing board 10 is divided into an equal-column square matrix, so it can be a 9×9 square matrix, as shown in FIG. 4; it can also be made into a 7×7 square matrix, as shown in FIG. 13 Or, it can be manufactured as a 5 x 5 square matrix, as shown in Figure 14; of course, it can also be manufactured as a 3 x 3 square matrix, as shown in Figure 15.

The sound-absorbing and sound-absorbing board 10 can be used with the upper fixed layer 20 and/or optionally with the sound-absorbing cotton layer 30 and the sound-absorbing cotton layer 40, and be laid on the ground of the upper space of the building floor plate. The sound-absorbing and sound-absorbing board 10 is installed above the lower space of the floor plate for use. Please refer to FIG. 16. It is advisable to first erect a light steel frame above the lower space of the floor plate, and then the sound-absorbing and sound-absorbing board 10 is installed above the lower space of the floor plate. The boards 10 are laid on the light steel frame one by one, so that when the sound waves generated in the lower space reach the sound-absorbing and sound-absorbing board 10, they will be exhausted due to the friction and vibration of a large amount of sound wave energy and the sound-absorbing and sound-absorbing board 10, and the effect of sound-absorbing and sound-absorbing is also achieved. .

To sum up, the sound-absorbing and sound-absorbing object for building floor slabs of the present invention can indeed achieve the intended purpose and effect of the invention, and the fact that it has not been published in publications or publicly used before the application, and at the same time has enhanced effects, is novel. The nature and progress, and the patent application can be filed in accordance with the law.

1: Absorb soundproof objects

10: Suction sound insulation board

20: Upper fixed layer

30: Sound-absorbing cotton layer

40: Sound insulation cotton layer

50: Styrofoam side strips

Claims (6)

A sound-absorbing and sound-absorbing object for a floor slab of a building is composed of at least one sound-absorbing and sound-absorbing board and an upper fixed layer, wherein the internal structure of the sound-absorbing and sound-absorbing board is at least composed of a non-woven fabric layer and an inner film layer, and the non-woven fabric layer is composed of The non-woven laminated block made by the non-woven fabric method is heated and pressed to form the non-woven laminate, and the inner film layer is attached to the bottom surface of the non-woven laminated block, and is heated and pressed together to form the sound absorption and sound insulation. The external structure of the sound-absorbing and sound-absorbing board is divided into square arrays in equal rows, and each square block has a circular arc flange raised in the center, and the four corners of the circular arc flange are slightly reduced in height. Once a connecting mound, four connecting mounds are continuously connected to form a square area, and the surrounding area is connected with a shield strip. The shield strip is used to separate different square blocks and surrounds the outermost periphery of the sound-absorbing and sound-absorbing board; The fixed layer is composed of a concrete and a fiber cotton ball. The concrete is mixed and stirred by cement and fine sand. The fiber cotton ball is a non-woven layered block made by a non-woven fabric method, and the block is irregularly split; When working, the sound-absorbing and sound-absorbing boards are arranged and laid on the surface of the floor slab with the arc flange facing upward, and then a large number of fiber cotton balls, the concrete and the water are mixed and stirred evenly, and then flatly filled on the floor. The sound-absorbing and sound-absorbing object is formed after it is dried and solidified. The sound-absorbing and sound-absorbing object for building floor slabs as claimed in claim 1, wherein the upper and lower surfaces of the non-woven fabric layer and the inner film layer of the sound-absorbing and sound-absorbing board can be attached to a surface layer, and are subjected to heat drying and pressing together. And co-molded into the sound-absorbing and sound-absorbing board. The sound-absorbing and sound-absorbing object for a floor slab of a building according to claim 1 or 2, wherein the inner film layer is a polyethylene film with a thickness between 0.009mm and 0.1mm. The sound-absorbing and sound-absorbing object for a floor slab of a building according to claim 1, wherein the sound-absorbing and sound-absorbing object comprises a sound-absorbing cotton layer and a sound-absorbing cotton layer, the sound-absorbing cotton layer is a fiber cotton layer with sound-absorbing effect, and the sound-absorbing cotton layer is The fiber cotton layer with sound insulation effect is arranged and laid on the floor slab during application. On the surface, lay the sound-insulating cotton layer on the sound-absorbing cotton layer, and then arrange the sound-absorbing and sound-insulating boards on the sound-insulating cotton layer with the arc flange facing up, and then place a large number of fiber cotton balls on the sound-absorbing cotton layer. The concrete and a water solution are uniformly mixed and stirred, and then flatly filled on the sound-absorbing and sound-absorbing board, and the sound-absorbing and sound-absorbing object is formed after drying and solidification. The sound-absorbing and sound-absorbing object for a floor slab of a building as claimed in claim 1 or 4, wherein the sound-absorbing and sound-absorbing object comprises a polystyrene edge strip, which is placed flat around the floor slab during application, and then placed on the floor plate. Lay the sound-absorbing and sound-absorbing objects within the range defined by the Styrofoam edge. The sound-absorbing and sound-absorbing object for a floor slab of a building according to claim 1 or 2, wherein the external structure of the sound-absorbing and sound-absorbing board is divided into an equal-column square array, which can be a 9 x 9 square array, a 7 x 7 square array, a 5 x 9 square array Either a 5 square or a 3 x 3 square.

Images