KR20240116311A - Mixed aerated concrete floor structure with excellent inter-floor noise containing expandable polystyrene granules - Google Patents

Abstract

The present invention relates to a mixed aerated concrete floor structure containing expandable polystyrene granules that is excellent for reducing inter-floor noise. The structure consists of a lower concrete slab located between floors of an apartment building and located at the bottom of each floor, and Located on the upper part of the lower concrete slab, a layer of EPS granule mixed aerated concrete containing expandable polystyrene (EPS) granules, a finishing mortar layer located on top of the EPS granular mixed aerated concrete layer, and embedded in the finishing mortar layer It is characterized in that it includes a piping part that plays various piping roles, and a floor finishing layer located on top of the finishing mortar layer, wherein mixed foam concrete containing expandable polystyrene granules (EPS) is manufactured. When pouring, the expandable polystyrene granules can be evenly distributed within the mixed foam concrete, and after pouring and curing, mixed foam concrete can be provided that has an excellent effect on inter-floor noise, and the mixed foam concrete can be manufactured right at the pouring site. Because it has excellent workability and contains expandable polystyrene granules with excellent insulation properties, it is effective in providing a mixed foam concrete floor structure that is excellent in reducing inter-floor noise.

Description

{Mixed aerated concrete floor structure with excellent inter-floor noise containing expandable polystyrene granules}

The present invention relates to a mixed aerated concrete floor structure that includes expandable polystyrene granules and is excellent for reducing inter-floor noise. More specifically, when manufacturing mixed aerated concrete containing expandable polystyrene granules (EPS), the expandable polystyrene granules are mixed into the mixed aerated concrete. It has the effect of providing a mixed foam concrete floor structure that is evenly distributed within the floor and has an excellent effect on inter-floor noise after pouring and curing.

In general, lightweight foam concrete using waste rubber was used for purposes such as reducing inter-floor noise and providing insulation.

A representative conventional technology includes the technology filed with the Korean Intellectual Property Office under Application No. 10-1997-0007436 and disclosed under Publication No. 10-1998-0072548.

However, this conventional technology had the problem that it was not an eco-friendly material because it used waste rubber.

In addition, the conventional technology uses waste rubber with an irregular shape, so when mixed with concrete, the waste rubber is not evenly and evenly distributed within the concrete, but is positioned biased to one side, significantly reducing the effectiveness of inter-floor noise blocking and insulation. There was a problem with this.

A photograph showing the appearance of waste rubber fragments obtained by crushing waste rubber used in conventional technology is shown in Figure 1.

As shown in Figure 1, the shape of the waste rubber itself is not constant, and when looking at lightweight aerated concrete containing the waste rubber, the waste rubber is not evenly distributed in the concrete, but there are places where a lot of the waste rubber is located. There were some places where there were too few of them, so there was a problem that the effectiveness of noise blocking and insulation between floors was low.

The present invention was proposed to solve all the problems described above. When manufacturing mixed foam concrete containing expandable polystyrene granules (EPS), the expandable polystyrene granules are evenly distributed within the mixed foam concrete, so that after pouring and curing, the foamed polystyrene granules are evenly distributed. The purpose is to provide a mixed foam concrete floor structure that can demonstrate excellent effects on inter-floor noise.

The mixed cellular concrete floor structure, which includes expandable polystyrene granules and is excellent for reducing inter-floor noise, according to the present invention to achieve the above object is located between floors of an apartment building, and the lower concrete located on the floor of each floor. A slab, a layer of EPS granule-mixed aerated concrete containing expandable polystyrene (EPS) granules, located on top of the lower concrete slab, a finishing mortar layer located on top of the EPS granule-mixed aerated concrete layer, and the finishing layer. It is characterized by including a piping part that is embedded in the mortar layer and plays various piping roles, and a floor finishing layer located on top of the finishing mortar layer.

In addition, the method for manufacturing the EPS granule mixed foam concrete layer containing expandable polystyrene granules used in the mixed foam concrete floor structure, which is excellent for reducing inter-floor noise and including expandable polystyrene granules according to the present invention, is 1 m ³ of mixing tank per volume. A cement transfer step of transferring 8 to 10 bags of cement to the mixing tank, and an EPS granule transfer step of transferring 800 to 850 liters (L) of expandable polystyrene (EPS) granules per 1 m ³ volume of the mixing tank to the mixing tank. , an admixture transfer step of transferring 1.2 liters to 2.0 liters of the admixture per 1 m ³ volume of the mixing tank to the mixing tank, a water transfer step of transferring 250 liters to 350 liters of water per 1 m ³ volume of the mixing tank to the mixing tank, and A mixing step of stirring and mixing the transferred cement, EPS grains, admixture, and water, a discharge step of transferring the contents contained in the mixing container toward the discharge port through the discharge pipe, and a foaming agent branched between the mixing container and the discharge pipe. It is characterized by comprising a foaming agent spraying step of ejecting 0.4 liter to 0.8 liter of foaming agent through a spray pipe to form bubbles in the mixed concrete.

In addition, in the mixed cellular concrete floor structure containing expandable polystyrene granules according to the present invention, which is excellent for reducing inter-floor noise, the admixture contains 30 to 40% of acrylic copolymer and 10 to 40% of inorganic compound per weight. It is characterized in that it contains 20% water and 30 to 40% water.

In addition, in the mixed cellular concrete floor structure containing expandable polystyrene granules according to the present invention, which is excellent for reducing inter-floor noise, in the cement transfer step and pole transfer step, the transfer speed of cement and pole is 2 minutes per 1 m ³ volume of the mixing tank. It is 20 seconds to 3 minutes, and the diameter of the cement transfer pipe for transporting the cement and the diameter of the granule transfer pipe for transporting the EPS grains are varied from each other to control the amount of substances with different specific gravity being put into the mixing tank to control the EPS in the concrete. It is characterized by allowing the grains to be evenly distributed throughout.

In addition, in the mixed aerated concrete floor structure containing expandable polystyrene granules according to the present invention, which is excellent for reducing inter-floor noise, the diameter of the cement transfer pipe is 5 inches, and the diameter of the granule transfer pipe is 7 inches.

In addition, in the mixed aerated concrete floor structure containing expandable polystyrene granules according to the present invention, which is excellent for reducing inter-floor noise, an intermediate sound insulation layer is inserted between the EPS granule mixed aerated concrete layer and the finishing mortar layer to further reduce inter-floor noise. Although it can certainly be reduced, the intermediate sound insulation layer is either EVA, which is made of rubber, or EVS, which is made of Styrofoam, and has a thickness of 5 to 30 mm. Do it as

According to the mixed aerated concrete floor structure containing expandable polystyrene granules according to the present invention, which is excellent for reducing inter-floor noise, when manufacturing mixed aerated concrete containing expandable polystyrene granules (EPS), the expandable polystyrene granules are evenly distributed within the mixed aerated concrete. After pouring and curing, it is possible to provide a mixed foam concrete floor structure that has an excellent effect on inter-floor noise.

The present invention is described with reference to the embodiments shown in the accompanying drawings, but these are illustrative and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

Figure 1 is a photograph showing waste rubber fragments obtained by crushing waste rubber used in conventional technology.
Figure 2 is a diagram showing the configuration of a mixed foam concrete floor structure excellent for reducing inter-floor noise including expandable polystyrene granules according to an embodiment of the present invention.
Figure 3 is a flow chart showing the procedure of the EPS granule mixed foam concrete manufacturing method used in the embodiment of the present invention.
Figure 4 is a photograph showing the appearance of expandable polystyrene granules used in an example of the present invention.
Figure 5 is a view showing the mixing tank area in an embodiment of the present invention.
Figure 6 is a photograph showing the appearance of EPS granule mixed foam concrete used in an embodiment of the present invention.
Figure 7 is a photograph showing the EPS granule mixed foam concrete used in the embodiment of the present invention being poured on the lower slab, which is the bottom layer.

Hereinafter, a method for manufacturing mixed foam concrete containing expandable polystyrene granules with excellent interlayer noise according to a preferred embodiment of the present invention will be described in detail based on the attached drawings.

Figures 2 to 7 show a mixed cellular concrete floor structure excellent for reducing inter-floor noise including expandable polystyrene granules according to an embodiment of the present invention, and Figure 2 includes expandable polystyrene granules according to an embodiment of the present invention. Figure 3 is a diagram showing the configuration of a mixed foam concrete floor structure that is excellent for reducing inter-floor noise, Figure 3 is a flow chart showing the procedure of the EPS granule mixed foam concrete manufacturing method used in an embodiment of the present invention, and Figure 4 is a diagram showing the procedure of the present invention. A photograph showing the appearance of the expandable polystyrene granules used in the example of the present invention, Figure 5 is a view showing the mixing tank area in the example of the present invention, and Figure 6 is a picture showing the mixing of the EPS grains used in the example of the present invention. Figure 7 shows a photograph showing the appearance of the foamed concrete, and Figure 7 shows a photograph showing the EPS granule mixed foamed concrete used in the embodiment of the present invention being poured on the lower slab, which is the bottom layer.

As shown in the figure, the mixed aerated concrete floor structure 100, which includes expandable polystyrene granules and is excellent for reducing inter-floor noise, according to an embodiment of the present invention, consists of a lower concrete slab 10 and EPS granular mixed aerated concrete. It includes a layer 20, a finishing mortar layer 30, a piping part 40, a floor finishing layer 50, and an intermediate sound insulation layer 60.

The lower concrete slab 10 is located between floors of an apartment building and is located on the floor of each floor. (see Figure 2)

The EPS granule mixed aerated concrete layer 20 is located on the upper part of the lower concrete slab and includes expandable polystyrene (EPS) granules, which will be described in detail later.

The finishing mortar layer 30 is located on top of the EPS granule mixed foam concrete layer.

The piping portion 40 is embedded in the finishing mortar layer 30 and serves as various piping functions.

The floor finishing layer 50 is located on top of the finishing mortar layer and is generally made of wood, but is provided in various materials.

Since the lower concrete slab 10, the finishing mortar layer 30, the piping part 40, and the floor finishing layer 50 are structures of a general apartment house, detailed descriptions will be omitted.

The present invention is characterized by an EPS granule mixed aerated concrete layer (20), and the method of forming the EPS granule mixed aerated concrete layer (20) includes, as shown in FIG. 3, a cement transfer step (S1) , EPS granule transfer step (S2), admixture transfer step (S3), water transfer step (S4), mixing step (S5), discharge step (S6), and foaming agent injection step (S7). Includes.

The cement transfer step (S1) is a process of transferring 8 to 10 bags of cement per 1 m ³ volume of the mixing tank (1) through the cement transfer pipe (2). (see Figure 5)

In the EPS particle transfer step (S2), 800 to 850 liters (l) of expandable polystyrene (EPS) particles per 1 m ³ volume of the mixing tank are transferred to the mixing tank (1) through the EPS grain transfer pipe (3). It's a step.

The expandable polystyrene granules were referred to as EPS granules, and the appearance of the EPS granules is shown in Figure 4.

The admixture transfer step (S3) is a step of transferring 1.2 to 2.0 liters of the admixture per 1 m ³ volume of the mixing tank (1) through the admixture transfer pipe (4).

The water transfer step (S4) is a step of transferring 250 to 350 liters of water per 1 m ³ volume of the mixing tank to the mixing tank. The water transfer step (S4) is performed through the water transfer pipe 5 of FIG. 5.

The mixing step (S5) is a step of mixing the cement, EPS grains, admixture, and water transferred to the mixing tank (1) by stirring.

Of course, the stirrer 8 is used in the mixing step. Since the stirrer 8 is general, detailed description will be omitted.

The discharge step (s6) is a step in which the contents contained in the mixing tank (1) are transferred toward the discharge port through the discharge pipe (6).

The foaming agent injection step (S7) is to spray 0.4 liter to 0.8 liter of foaming agent into the spray pipe (7) branched between the mixing tank (1) and the discharge pipe (6) to form bubbles in the mixed concrete. This is the step to do it.

In this embodiment, the foaming agent is a vegetable foaming agent, which is purchased commercially, so a detailed description is omitted.

Meanwhile, in this embodiment, the admixture is characterized by containing 30 to 40% of acryl copolymer, 10 to 20% of inorganic compound, and 30 to 40% of water per weight.

If these ingredients are present, cement and the EPS granules can be mixed well.

In addition, in the cement transfer step and the pole transfer step, the transfer speed of cement and pole is 2 minutes 20 seconds to 3 minutes per 1 m ³ volume of the mixing tank, and the diameter of the cement transfer pipe for transferring cement and the It is desirable to have different diameters of the granule transfer pipes.

In this way, by varying the diameter of the cement transfer pipe and the diameter of the EPS granule transfer pipe, it is possible to control the amount of materials with different specific gravity injected into the mixing tank so that the EPS particles can be evenly distributed throughout the concrete.

More preferably, the diameter of the cement transfer pipe is 5 inches, and the diameter of the granule transfer pipe is 7 inches.

This is because the best results can be obtained with this diameter.

Meanwhile, in this embodiment, an intermediate sound insulation layer 60 is further provided.

The intermediate sound insulation layer 60 is provided between the EPS granule mixed foam concrete layer 20 and the finishing mortar layer 30, and is intended to more reliably reduce inter-floor noise.

The intermediate sound insulation layer 60 may be formed of either EVA, which is made of rubber, or EVS, which is made of Styrofoam.

In addition, the thickness of the intermediate sound insulation layer 60 is preferably formed to be 5 mm to 30 mm.

If the thickness of the intermediate sound insulating layer 60 is too thin, there is a risk of the intermediate sound insulating layer 60 being damaged by the weight pressed by the finishing mortar layer 30, and if the thickness is too thick, the entire space between layers may be damaged. This is because the thickness of the concrete becomes thick, making construction inconvenient.

The mixed foam concrete floor structure 100, which includes expandable polystyrene granules according to this embodiment and has the above-described structure and is excellent for reducing inter-floor noise, is poured as follows.

The EPS granule mixed foam concrete layer (20) is formed on the pre-formed lower concrete slab (10).

The EPS granule mixed aerated concrete layer 20 is formed by pouring EPS granule mixed aerated concrete made through the process already described in detail, and the appearance of the EPS granular mixed aerated concrete is shown in FIG. 6.

And, the pouring of the EPS granule mixed foam concrete is shown in Figure 7.

In addition, after forming the EPS granule mixed foam concrete layer 20 as in this embodiment, the above-described intermediate sound insulation layer 60 is inserted, and then various pipes are laid to form the pipe portion 40. Afterwards, the finishing mortar layer 30 is poured and formed.

Subsequently, the floor finishing layer 50 is formed on the top of the finishing mortar layer 30. The floor finishing layer 50 can be formed from a wooden floor, etc.

S1. Cement transfer step S2. EPS granule transfer stage
S3. Admixture transfer step S4. water transfer step
S5. Mixing step S6. Discharge stage
S7. Foaming agent spraying step
1. Mixing tank 2. Cement transfer pipe
3. EPS granule transfer pipe 4. Admixture transfer pipe
5. Water transfer pipe 6. Discharge pipe
7. Foaming agent injection pipe 8. Agitator
10. Lower concrete slab
20. EPS granule mixed foam concrete layer
30. Finishing mortar layer 40. Piping section
50. Floor finishing layer 60. Intermediate sound insulation layer

Claims (6)

A lower concrete slab located between floors of an apartment complex and located at the bottom of each floor:
An EPS granule mixed aerated concrete layer located on top of the lower concrete slab and containing expandable polystyrene (EPS) granules;
A finishing mortar layer located on top of the EPS granule mixed foam concrete layer;
A piping unit embedded in the finishing mortar layer and serving as various piping functions;
A floor finishing layer located on top of the finishing mortar layer. A mixed foam concrete floor structure containing expandable polystyrene granules, which is excellent for reducing inter-floor noise. According to claim 1,
The EPS granule mixed foam concrete layer containing the expandable polystyrene granules,
A cement transfer step of transferring 8 to 10 bags of cement per 1 m ³ volume of the mixing tank to the mixing tank;
An EPS granule transfer step of transferring 800 to 850 liters (L) of expandable polystyrene (EPS) granules per 1 m ³ volume of the mixing tank to the mixing tank;
An admixture transfer step of transferring 1.2 liters to 2.0 liters of the admixture per 1 m ³ volume of the mixing tank to the mixing tank;
A water transfer step of transferring 250 to 350 liters of water per 1 m ³ volume of the mixing tank to the mixing tank;
A mixing step of mixing the cement, EPS grains, admixture, and water transferred to the mixing tank by stirring;
A discharge step of transferring the contents contained in the mixing tank toward the discharge port through a discharge pipe;
A foaming agent injection step of spraying 0.4 liter to 0.8 liter of foaming agent into the foaming agent spray pipe branched between the mixing tank and the discharge pipe to form bubbles in the mixed concrete. Reducing inter-floor noise by including expandable polystyrene granules. Excellent mixed aerated concrete floor structure. According to claim 2,
The admixture contains expandable polystyrene granules, characterized in that it contains 30 to 40% of acrylic copolymer, 10 to 20% of inorganic compound, and 30 to 40% of water per weight, thereby reducing interlayer noise. Excellent mixed aerated concrete floor structure. According to claim 2,
In the cement transfer step and the pole transfer step, the transfer speed of cement and pole is 2 minutes 20 seconds to 3 minutes per 1 m ³ volume of the mixing tank,
By varying the diameter of the cement transfer pipe that transports cement and the diameter of the granule transfer pipe that transports EPS grains, the amount of materials with different specific gravity input into the mixing tank can be adjusted to ensure that the EPS grains are evenly distributed throughout the concrete. A mixed foam concrete floor structure that is excellent for reducing inter-floor noise and includes expandable polystyrene granules. According to claim 4,
A mixed foam concrete floor structure excellent for reducing inter-floor noise, including expandable polystyrene granules, wherein the cement transfer pipe has a diameter of 5 inches and the granule transfer pipe has a diameter of 7 inches. According to claim 1,
An intermediate sound insulation layer is inserted between the EPS granule mixed foam concrete layer and the finishing mortar layer to further reduce inter-floor noise,
The intermediate sound insulation layer is,
It is either EVA, which has a rubber material, or EVS, which has a Styrofoam material, and contains expandable polystyrene granules that are formed with a thickness of 5 to 30 mm for inter-floor noise reduction. Excellent mixed cellular concrete floor structure.