KR0147842B1 - Mortar composition - Google Patents

Abstract

Granules with a particle size of 1 to 5 mm, or a urethane-based binder consisting of a hardened powder of a tire-type waste tire with a thickness of 0.5 mm to 1.0 mm and a length of 30 mm and a tartaric acid solution, polyol 825, ethyl acetate and diisocyanate or BAM, VAM, Provided is a bottom soundproofing soundproofing material mixed in a constant proportion to a binder of a vinyl acetate emulsion obtained by polymerizing a mixture consisting of AA, PVA and water in a ratio of 7 to 8.5: 3 to 1.5 of a vinyl acetate emulsion copolymer. In addition, the soundproof dustproof material may be used by mixing the tire crushed product with vulcanized rubber (EVA) crushed powder and / or foamed styropol granules pulverized to 20 mesh or less.

In particular, the floor soundproofing dustproof material of the present invention can solve the problem caused by the noise of the conventional joint house, because it reduces the impact sound of the apartment house.

Description

[Name of invention]

Housing floor soundproofing

Detailed description of the invention

The present invention relates to a soundproofed soundproofing floor of a house which can be poured immediately on site when constructing a multi-family house such as a single house or an apartment, and more particularly, in which pulverized materials such as waste tires and waste rubber are combined with a binder. Relates to a mixture.

In general, multi-family housing has continued to increase due to policy factors such as more efficient use of land and ease of mass supply of housing.Since 1994, the share of multi-family housing including tenement houses and multi-family housing has exceeded 50%. Stood.

Concrete used in most apartment houses in Korea is heavy and dense due to the characteristics of the material, so it has better blocking performance against noise transmitted through air such as speech or TV sound than other materials of the same thickness. However, due to the nature of the material, the impact sound (solid transmission sound) generated by direct impact on the concrete surface has a characteristic that is easily transmitted to the adjacent generation. These characteristics are often experienced by people living in apartment houses, such as the sound of running upstairs, dropping objects, etc., even if the frequency of occurrence is not high. Such a floor impact sound cannot be fundamentally solved by the general floor structure currently applied in Korea.

In order to solve such a floor shock problem, Germany, France, and the like (floor floor) structure is adopted. This floated floor structure has a dustproof cushioning material such as glass surface on the slab, and then forms a built-in flooring material on it so that the impact energy applied thereon is not transmitted directly to the structure (slab), which is very effective in reducing the floor impact sound. It is known.

In general, the floor impact sound reducing material of a house is evaluated for its performance evaluation, in addition to the floor shock sound insulation, the physical and chemical relationships with other materials such as concrete, the structural performance against the load acting on the floating floor, and the elasticity of the floor impact sound reducing material. Various performances such as characteristics, heating pipes, and resistance to the surrounding thermal environment and construction problems should be reviewed and audited comprehensively, and all of the complex performance requirements listed above should be met. Doing.

In house construction, conventional floor soundproofing materials are either mat type or seat type, so the gap is widened during construction, and even a little carelessness in construction prevented the construction of airtight construction. Not only could it be poured, but the product price was also a factor in raising construction costs.

In order to solve this problem, the present inventors earnestly studied, and as a result of using a granular or fiber pulverized product obtained by pulverizing waste tires or waste rubber, mixed with a curing agent and a binder of a polymer material, the problem can be solved. The present invention was completed.

The present invention is intended to solve the drawbacks of the conventional floor impact sound reducing material.

A first object of the present invention is to provide a floor soundproofing and dustproof material in which a waste tire, a waste rubber pulverized product and a tartaric acid hardening accelerator (binder A), a modified urethane (binder B) and a modified acrylic emulsion (binder C) are mixed.

A second object of the present invention is to provide a floor soundproofing, dustproof material which can be cast in a construction site.

It is a third object of the present invention to provide a floor soundproofing and dustproof material having a heat insulating function.

A fourth object of the present invention is to provide a floor soundproofing and a dustproof material which does not undergo shrinkage after curing and has a short curing time.

The fifth object of the present invention is to provide a floor soundproofing and dustproof material which is very inexpensive.

A sixth object of the present invention is to provide a method of placing the above-mentioned floor soundproofing and dustproof material.

Hereinafter, the present invention will be described in detail.

In recent years, since waste tires have an adverse effect on the environment, it is widely used because it is excellent in elasticity than conventional concrete when it is crushed and used in combination with brick or concrete mortar for gravel or sand. However, the use of such concrete mortar can not act as a floor soundproofing, dustproof material of the multi-unit house pursued by the present invention.

The pulverized products of waste tires or waste rubber used in the present invention are granules having a particle size of 1 to 5 mm or 0.5 mm to 1.0 mm, lengths of 30 mm or less, and preferably pulverized products of fiber type tires or pe rubbers of 5 to 15 mm. it means. Such a pulverized product can be obtained, for example, by crushing a steel radial tire of an automobile with a crusher, removing the steel with a charity, then crushing with a crusher, removing the steel with a charity, and classifying with a classifier. This grinding method can be manufactured according to a conventionally well-known method, and is not specifically limited. The waste tire pulverized product may be used as it is, or a mixture of vulcanized rubber (EVA: Emulsified Vinyl acerate) pulverized to 20 mesh or less is mixed, followed by mixing EPS (Expansion Polystyrene: expanded styropol) granules. Can be used.

Hereinafter, the binders A, B, and C described above.

Binders A, B and C used in the present invention are room temperature curing type and the curing time is 3 to 4 hours in the case of the material in which the binders A and B are mixed, and 5 to 6 hours in the material in which the binder C is mixed.

Binder A was mixed with 5 to 7 parts by weight of tartaric acid (C ₄ H ₆ O ₆ ) and 95 to 93 parts by weight of water to impart a curing accelerator function, so that tartaric acid was completely dissolved in water.

Binder B is a modified urethane-based binder which is instantaneously cured at room temperature by contact with the provider A, and is composed of the following composition ratio.

Polyol 825 (Korea Polyol) 60 ~ 70 parts by weight

20-30 parts by weight of ethyl acetate (Korea Petroleum)

Tolylene diisocyanate (Korea Polyol) 5-14 parts by weight

or

Polyol 925 (Korea Polyol) 55 ~ 65 parts by weight

Ethyl Acetate (Korea Petroleum) 25-35 parts by weight

4 to 8 parts by weight of tolylene diisocyanate (Korean polyol)

3 to 7 parts by weight of polyisocyanate (Korean polyol)

Is synthesized.

Binder C is a binder in which a polymer synthesized with a monomer of the following component and a vinyl acetate-ethylene copolymer are mixed.

That is, the next composition ratio

2 to 4 parts by weight of BAM (butyl acetate monomer)

20 to 40 parts by weight of VAM (vinylacetate monomer)

AA (acrylic acid) 1 to 4 parts by weight

PVA (polyvinylacetate) 4-5 parts by weight

0.3-0.8 weight part of polymerization initiators

45 to 55 parts by weight of water

The vinyl acetate emulsion system obtained by superposing | polymerizing the monomer of and a well-known vinyl acetate-ethylene copolymer (henceforth EVA emulsion resin) are mixed at 70-85: 15-30 weight part.

When used in combination with the above-mentioned waste tire or a crushed product of the waste rubber, the binder formed as described above can be used, for example, as follows.

That is, after mixing 90 parts by weight of waste tires or waste rubber crushed products and 3 parts by weight of binder A to produce moisture-proof packaging, the package is opened and poured at a construction site, and then 7 parts by weight of binder B are sprayed on the upper surface, Alternatively, the above package may be combined with 7 parts by weight of binder B at a housing construction site and then selected from the method of site casting. In the case of using binder C, as an example, 90 parts by weight of waste tire or waste rubber crushed product may be used. And binder C 10 parts by weight of the moisture-proof packaging to commercialize the product can be opened in the field construction site immediately opened.

As described above, when the floor tires are constructed of waste tires or waste rubber pulverized products and the above binders A, B or C, the floor impact noise reducing material of the present invention can not only block the floor impact noise during the construction of the house, but also the general soundproofing and dustproofing. Alternatively, excellent performance and physical properties as sound insulating materials can be obtained.

Hereinafter, the present invention will be described in more detail by way of examples.

Example 1

After uniformly mixing 6 kg of waste tire grinds (granule type) with a particle size of 1-5 mm and 1 kg of waste rubbers (EVA, etc.) having a particle size of 20 mesh or less uniformly, Binder C (composition: 3 parts by weight of BAM, 37.6 weight of VAM) Parts, 2.9 parts by weight of AA, 4.5 parts by weight of polyvinyl alcohol, 0.6 parts by weight of sodium bicarbonate as a polymerization initiator, and 80 parts by weight of a polymer obtained by polymerizing 52 parts by weight of water and 20 parts by weight of vinyl acetate-ethylene copolymer). Stirred.

After the mixture was poured into a mold having an area of 1 m ² and a thickness of 10 mm, the work was completed by covering the upper surface with a damp paper. After completion of casting, the curing was completed after 5 ~ 66 hours at room temperature (20 ℃), and there was no change of state such as cracking even when walking on it, and no dimensional change such as shrinkage even after 1 month.

Therefore, it can be seen that the floor dustproofing and soundproofing agent of the present invention have no abnormality even if the malt work, which is the heavy walking and subsequent processes, is carried out immediately after 5-6 hours of in-situ casting at room temperature.

Example 2

6 kg of waste tire grinds (granule type) with a particle size of 1 to 5 mm, and waste rubbers (EVA, etc.) of 1 kg or less of particle size of 1 kg are mixed uniformly, and then binder A (composition: 6 parts by weight of tartaric acid, 94 parts by weight of water) Stir in 0.6 kg. When the mixture was poured into a mold having an area of 1 m 2 and a thickness of 10 mm, binder B [Composition: 65 parts by weight of polyol 825 (manufactured by Polyol Korea), 26 parts by weight of ethyl acetate (manufactured by Korea Petroleum), tolylene diisocyanate (Korea polyol Co., Ltd.) 9 parts by weight] 0.4kg was mixed together and poured, or after the mixture containing the binder A was poured, the binder B was evenly sprayed on and covered with a damp paper to complete the work. After 3 ~ 4 hours after the completion of casting, the hardening was completed and no change of state such as cracking was found even during heavy walking, and there was no dimensional change such as shrinkage even after 1 month of hardening.

Therefore, the dustproof and soundproofing material of the present invention had no abnormality even if the curing time of 3-4 hours after the in-situ cast and then immediately proceeded to the heavy walking and subsequent work of the mortar.

Example 3

7 kg of waste tire grinds (granule type) having a particle size of 1 to 3 mm were put into 0.8 kg of binder C (the same as that used in Example 1) and stirred. After the mixture was poured into a mold having an area of 1 m 2 and a thickness of 10 mm, the work was completed by covering the moisture-proof paper thereon. Curing was completed after 5-6 hours (20 ℃) of pouring, and there was no change of state even during heavy walking, and no dimensional change such as shrinkage even after 1 month. Therefore, the dustproof and soundproof material of the present invention had no abnormality even if the work was performed in Malta, which is a subsequent process after curing time of 5 to 6 hours after in-situ casting at room temperature.

Example 4

7 kg of waste tire grinds (granule type) having a particle size of 1 to 3 mm and 0.6 kg of a binder (composition: 7 parts by weight of tartaric acid and 93 parts by weight of water) were added and stirred. The mixture was poured into a mold having an area of 1 m ² and a thickness of 10 mm, and on top of this, binder B [composition: 60.12 parts by weight of polyol 825 (manufactured by Korea Polyol), 28.05 parts by weight of ethyl acetate (manufactured by Korea Petroleum), tolylene diasorcia 6.41 parts by weight of Nate (manufactured by Korea Polyol Co., Ltd.) and 5.42 parts by weight of polyisocyanate (manufactured by Korea Polyol Co., Ltd.) were uniformly sprayed with 0.4 kg and covered with a damp paper to complete the operation. After 3 ~ 4 hours after the completion of casting, the hardening was completed and no change of state such as cracking was found even during heavy walking, and there was no dimensional change such as shrinkage even after 1 month of hardening.

Example 5

4 kg of the waste tire grinds (granule type) with a particle size of 1 to 5 mm and 0.1 kg of EPS (Schiropol insulation) granules were uniformly mixed, and this was put into 0.75 kg of binder C (the same as that of Example 1) and stirred. After the mixture was poured into a mold having an area of 1 m ² and a thickness of 10 mm, the work was completed by covering the upper surface with a damp paper. After 5 ~ 6 hours (20 ℃) of pouring, the curing was completed. There was no change of state such as cracking even during heavy walking, and no dimensional change such as shrinkage even after 1 month. Therefore, in the present invention, the dustproof and soundproofing material has no problem even if it proceeds with the operation of Malta, which is a heavy walking and subsequent process, from 5 to 6 hours after on-site casting at room temperature.

Example 6

4 kg of waste tire grinds (granule type) with a particle size of 1 to 5 mm and 0.1 kg of EPS (Styropole insulation) granules are uniformly mixed and stirred in 0.6 kg of binder A (composition: 7 parts by weight of tartaric acid, 93 parts by weight of water). It was. Binder B [Composition: 60.12 parts by weight of polyol 825 (manufactured by Korea Polyol), 28.05 parts by weight of ethyl acetate (manufactured by Korea Petroleum), 6.41 parts by weight of tolylene diisocyanate (manufactured by Korea Polyol) and polyisocyanate (manufactured by Korea Polyol) ) 5.42 parts by weight] 0.4 kg was mixed, poured into a mold having an area of 1 m ² and a thickness of 10 mm, and the work was completed by covering the damp paper. It was cured or completed 3 ~ 4 hours after completion of pouring, and there was no change of state even during heavy walking, and there was no change of dimension such as shrinkage even after 1 month. Therefore, the dust-proof and soundproofing material of the present invention had no abnormality even after the mortar work, which is a subsequent process, through a curing time of 3 to 4 hours after the in-site casting work.

Example 7

5 kg of waste tire grinds (granule type) having a particle size of 1 to 5 mm and 2 kg of waste rubbers (EVA, etc.) of 20 mesh or less were mixed and mixed into 0.8 kg of binder C (the same as in Example 1) and stirred. The mixture was poured into a mold having an area of 1 m 2 and a thickness of 10 mm, and then the work was completed by covering the moisture-proof paper on its upper surface. After completion of casting, 5 ~ 6 hours (20 ℃) of hardening was completed, and there was no change of state even during heavy walking, and there was no dimensional change such as shrinkage even after 1 month of hardening.

Therefore, the dustproof and soundproofing material of the present invention had no abnormality even when the malt work, which is a subsequent process, was carried out after curing time of 5 to 6 hours after in situ casting at room temperature.

Example 8

5 kg of waste tire grinds (granule type) with a particle size of 1 to 5 mm and 2 kg of waste rubbers (EVA, etc.) of 20 mesh or less are mixed and 0.6 kg of binder A (composition: 5 parts by weight of tartaric acid and 95 parts by weight of water). Put and stirred. Binder B [Composition: 60.12 parts by weight of polyol 825 (manufactured by Korea Polyol), 28.05 parts by weight of ethyl acetate (manufactured by Korea Petroleum), 6.41 parts by weight of tolylene diisocyanate (manufactured by Korea Polyol) and polyisocyanate (manufactured by Korea Polyol) 5.42 parts by weight] was mixed uniformly with 0.4kg, poured into a mold of 1m ² area, 10mm thick and covered with a damp-proof paper on the top to complete the work.

Curing was completed 3 ~ 4 hours after the completion of pouring, and there was no change of state even after heavy walking, and there was no change of dimension such as shrinkage even after 1 month. Therefore, the dustproof and soundproofing material of the present invention had no abnormality even after the malt work, which is a subsequent process, through curing time of 3 to 4 hours after in situ casting.

Example 9

4.5 kg of waste tire powder (fiber type) and 1 kg of waste rubber (EVA, etc.) powder were mixed with a thickness of 0.5 to 1 mm and a length of 30 mm or less, and the mixture was put into 0.8 kg of binder C (the same as that used in Example 1) and stirred. . After pouring into a mold having an area of 1m ² and a thickness of 10mm, the work was completed by covering the upper surface with a damp paper. After completion of casting, 5 ~ 6 hours (20 ℃) of hardening was completed, and there was no change of state even during heavy walking, and there was no dimensional change such as shrinkage even after 1 month. Therefore, the dustproof and soundproofing material of the present invention had no abnormality even if the malt work, which is a subsequent process, was carried out after curing time of 5-6 hours after pouring at room temperature.

Example 10

4.5 kg of waste tires (fiber type) with a thickness of 0.5 to 1 mm and a length of 30 mm or less and 1 kg of waste rubbers (EVA, etc.) are mixed and binder A (composition: 6 parts by weight of tartaric acid, 94 parts by weight of water) 0.6 Stir in kg. Binder B [Composition: 60.12 parts by weight of polyol 825 (manufactured by Korea Polyol), 28.05 parts by weight of ethyl acetate (manufactured by Korea Petroleum), 6.41 parts by weight of tolylene diisocyanate (manufactured by Korea Polyol), and polyisocyanate ) 5.42 parts by weight] was mixed uniformly with 0.3kg, poured into a mold with an area of 1m ² and a thickness of 10mm and covered with a damp paper on the upper surface to complete the work.

Curing was completed after 3 ~ 4 hours after the completion of pouring, and there was no change of state even during heavy walking, and there was no change of dimension such as shrinkage even after 1 month. Therefore, it can be seen that the dustproof and soundproofing material of the present invention does not have any abnormality even if the malt work, which is a subsequent process, is performed after curing time of 3 to 4 hours after the pouring work.

Example 11

5 kg of the waste tire pulverized product (fiber type) having a thickness of 0.5 to 1 mm and a length of 30 mm or less is weighed into binder C (composition: 2 parts by weight of BAM, 38.6 parts by weight of VAM, 3.3 parts by weight of AA, 4.1 parts by weight of polyvinyl alcohol, sodium bicarbonate polymerization initiator). A mixture of 70 parts by weight of a polymer obtained by polymerizing 0.6 parts by weight of 52 parts by weight of water and 30 parts by weight of EVA emulsion resin) was added to 0.8 kg and mixed uniformly.

The mixture was poured into a mold with an area of 1m ² and a thickness of 10mm with a trowel, and then covered with a damp paper on the upper surface to complete the work. After completion of casting, 5 ~ 6 hours (20 ℃) of hardening was completed, and there was no change of state even during heavy walking, and there was no dimensional change such as shrinkage even after 1 month. Therefore, the dustproof and soundproofing material of the present invention had no abnormality even if the malt work, which is a subsequent process, was performed after curing time at 5 to 6 hours after the pouring operation at room temperature.

Example 12

5 kg of a waste tire pulverized product (fiber type) having a thickness of 0.5 to 1 mm and a length of 30 mm or less was put in 0.6 kg of binder A (composition: 6 parts by weight of tartaric acid and 94 parts by weight of water) and stirred. The mixture was poured into a mold having an area of 1 m ² and a thickness of 10 mm, and on top of this, binder B [composition: 60.12 parts by weight of polyol 825 (manufactured by Korea Polyol), 28.05 parts by weight of ethyl acetate (manufactured by Korea Petroleum), tolylene diisocyanate ( 6.41 parts by weight of Korea Polyol Co., Ltd. and 5.42 parts by weight of Polyisocyanate (Korea Polyol Co., Ltd.)] 0.4 kg was evenly sprayed and covered with a damp-proof paper to complete the work. Curing was completed 3 ~ 4 hours after the completion of pouring, and there was no change of state even after heavy walking, and there was no change of dimension such as shrinkage even after 1 month. Therefore, the dust-proof and soundproofing material of the present invention had no abnormality even if the malt work, which is a subsequent process, was carried out after curing time of 3-4 hours after pouring at room temperature.

Example 13

4 kg of waste tire pulverized product (fiber type) having a thickness of 0.5 to 1 mm and a length of 5 to 15 mm or less and 0.1 kg of EPS (Styropole insulation) granules were uniformly mixed. This mixture was poured into 0.9 kg of binder C (the same as that used in Example 1) and stirred. After pouring into a mold having an area of 1m ² and a thickness of 10mm, the work was completed by covering the upper surface with a damp paper.

After completion of casting, 5 ~ 6 hours (20 ℃) of hardening was completed, and there was no change of state even during heavy walking, and there was no dimensional change such as shrinkage even after 1 month. Therefore, the dust-proof and soundproofing material of the present invention had no abnormality even if it proceeded with a malt work, which is a subsequent process, through a curing time of 5 to 6 hours after the pouring work.

Example 14

4 kg of waste tire pulverized product (fiber type) having a thickness of 0.5 to 1 mm and a length of 5 to 15 mm or less, and 0.1 kg of EPS (Styropole insulation) granules were mixed. This mixture was put into 0.6 kg of binder A (composition: 5 parts by weight of tartaric acid, 95 parts by weight of water) and stirred. Binder B [Composition: 60.12 parts by weight of polyol 825 (manufactured by Polyol Korea), 28.05 parts by weight of ethyl acetate (manufactured by Korea Petroleum), 6.41 parts by weight of tolylene diisocyanate (manufactured by Kokusai Polyol) and polyisocyanate (Korea Polyol Product) 5.42 parts by weight] was mixed uniformly with 0.3kg, poured into a mold having an area of 1m ² and a thickness of 10mm and covered with a damp paper on the upper surface to complete the work.

After pouring, 3 ~ 4 hours of curing time was no problem.

Example 15

3.5 kg of waste tire grinds (fiber type) and 0.5 kg of waste rubber (EVA, etc.) were mixed with a thickness of 0.5 to 1 mm and a length of 5 to 15 mm or less. This mixture was put into 1.0 kg of binder C (the same as that used in Example 1) and stirred. After pouring in a mold having an area of 1 m 2 and a thickness of 10 mm, the work was completed by covering the moisture-proof paper on the upper surface.

After completion of casting, 5 ~ 6 hours after 20 (℃), the curing was completed. There was no change of state even during heavy walking, and there was no dimensional change such as shrinkage even after 1 month. Therefore, the dustproof and soundproofing material of the present invention had no abnormality even if the malt work, which is a subsequent process, was carried out after curing time of 5-6 hours after pouring at room temperature.

Example 16

3.5 kg of Fethier grinds (fiber type) and 0.5 kg of waste rubbers (EVA, etc.) are mixed with a thickness of 0.5 to 1 mm and a length of 5 to 15 mm, and the mixture (composition: 5 parts by weight of tartaric acid, 95 parts by weight of water) ) Into 0.6 kg and stirred. After the mixture was poured into a mold having an area of 1 m 2 and a thickness of 10 mm, Binder B [composition: 60.12 parts by weight of polyol 825 (manufactured by Korea Polyol), 28.05 parts by weight of ethyl acetate (manufactured by Korea Petroleum), tolylene diisocyanate (Korea 6.41 parts by weight of a polyol company) and 5.42 parts by weight of a polyisocyanate (manufactured by Korean Polyol Co., Ltd.) were uniformly dispersed with 0.4 kg, and the work was completed by covering the upper surface with a damp paper.

There was no abnormality even after the completion of the casting process, after 3 ~ 4 hours of curing time, to proceed with the subsequent mortar work.

Examples 5 and 6, 13 and 14 are intended to impart a heat insulating function and from Example 1 to Example 8 are granular pulverized particles having a particle size of 1 to 3 mm or 1 to 5 mm, and the examples of Example 9 to Example 9 Up to 16, the pulverized products of waste tires were also made of fiber type pulverized products having a thickness of 0.5 to 1 mm and a length of 30 mm or less, and were tested and carried out as in the contents of the composition. In each example, odd numbers 1, 3, 5, 7, 9, 11, 13, and 15 are all binder C, and even numbers 2, 4, 6, 8, 10, 12, 14, and 16 are binder A and binder. It was set as B. The moisture proof paper used here is the thing made by this inventor, etc., and was made to impregnate BROWN ASPALT in thick paper, or waterproof vinyl.

[Test Example 1]

(Reaction test of floor impact sound reducing material of the present invention and concrete)

The floor impact sound reducing material is cast on the cured concrete slab, and after the floor impact sound reducing material is hardened, it has a floor structure in which lightweight foamed concrete is poured thereon. Therefore, the state of adhesion, chemical reaction and penetration of concrete slabs and lightweight foamed concrete of floor impact sound reducing materials were tested.

(Test Methods)

In order to conduct a reaction test between the concrete slab and the floor impact sound reducing material of the present invention, first, a concrete plate of 500 × 500 × 130 mm is manufactured and cured, and then, as in the above embodiment, the waste tire pulverized material is binder C (Example 1 and In the same), mixed with a ratio of 1: 0.8, apply a floor impact sound reducing material to a thickness of 20mm, curing at room temperature for 14 days, and then cut half of the sample to bond the concrete and the floor impact sound reducing material It was confirmed that the penetration into the concrete.

In addition, the reaction test of the lightweight foam concrete and the floor impact sound reducing material was applied to the molding mold (500 × 500 × 150mm), the bottom impact sound reducing material of the present invention was flattened to a thickness of 20 mm, and cured for 24 hours, and then the lightweight foam concrete was again placed thereon. After casting to a thickness of 60 mm, it was cured for 14 days. After the lightweight foamed concrete was cured, the cross-section was cut to confirm the presence of lightweight foamed concrete in the surface peeling and bottom layer sound reduction materials.

(2) Test result

As a result of evaluating the reaction between the floor impact sound reducing material and concrete, it is shown in Table 2.8.

As shown in Table 1, there was no peeling, penetration, and chemical reaction on the pour surface when the floor impact sound absorber was poured on the concrete slab.

Reaction test result of floor impact sound reducing material and concrete

[Test Example 2]

(Test of thermal conductivity and thermal permeability)

Heat has a large temperature difference, a large area, and the thinner the material, the greater the amount of heat flowing, and the following relation is established.

Q: calorie (㎉), A: thermal conductivity (㎉ / mh ° C), A: area (m²), t: temperature difference (° C), t: time d: thickness (m), and the thermal conductivity A at this time is as follows.

Thermal conductivity increases with increasing temperature at temperatures between 0 ° C and 100 ° C, the ratio of which is affected by the material and its density. In terms of heat permeability, the total flow of heat transfer, heat conduction, and heat transfer processes is the total flow of heat through the unit temperature of the wall and the temperature difference of air determined on both sides of the wall.

qt: heat perfusion ^{(㎉ / m 2 h ℃)} , K: yeolgwanryuyul ^{(㎉ / m 2 h ℃)} ,

ti, to: Both air temperature (℃), R: Heat permeation resistance (m ² h ℃ / ㎉)

The heat permeation rate represents the amount of heat passing in 1 hour per 1 m ^{2 of the} wall when there is a difference of 1 ° C. in both air temperatures of the wall, and can be expressed by the following equation.

α _o : Thermal conductivity of the external surface of the wall (㎉ / mh ℃)

d ₁ , d ₂ ....... d _u : thickness of the wall material (m)

A ₁ , A ₂ ....... A _u : Thermal conductivity of wall material (㎉ / mh ℃)

α ₁ : thermal conductivity of the inner surface of the wall (㎉ / mh ° C.)

The heat transfer rate in the above equation is determined by the wind speed and the like as a factor for determining the heat transfer amount between the air on the wall surface, but generally the values in Table 2 are used.

Heat transfer rate of wall surface

(Test Results and Analysis)

(1) Test result

When the floor impact sound reducing material of the present invention is used in place of foamed polystyrene and lightweight foamed concrete, which are currently used in the floor slab structure of multi-unit houses, first, foamed polystyrene, lightweight foamed concrete, and floor layer sound absorber are used to determine whether proper thermal performance is secured. The thermal conductivity for was measured, and the results are shown in Table 3 below.

As shown in Table 3, the average thermal conductivity value of the granular type is 0.117㎉ / mh ℃, and the fiber type has the average thermal conductivity value of 0.087 형 / mh ℃. It appears as low as ℃. In addition, it shows a higher value of 0.051 ~ 0.081㎉ / mh ℃ than foamed polystyrene, which is a kind of insulation used in the floor structure of multi-unit houses, but it has improved insulation performance by 0.058 ~ 0.088㎉ / mh ℃ compared to light foam concrete. It is shown.

(2) Calculation of heat transmission rate

Heat permeability was calculated according to Eq. (5) using the thermal conductivity values and thickness of each component of the floor slab structure in order to estimate the heat permeability for the floor slab type of the apartment house using the floor impact sound damper.

In addition, the floor slab structure of MDU is divided into three types: top, bottom, and reference floor structures. In this test example, the thermal permeability of the bottom and reference floor floating floor structures where floor impact sound absorbers are actually used was calculated, and the current foaming was performed. Comparison and analysis were performed with the bottom slab structure using polystyrene and lightweight foam concrete.

end. Floor of the living room facing the lowest floor of the living room

The floor structure of the existing multi-family house is composed of two types as shown in Table 4, and the heat transmission rate values for each are shown in Table 5.

In addition, when the floor impact sound reducing material is applied to the existing floor structure, the thermal permeability values for the granular type and the fiber type 10, 15, 20, and 30 mm, respectively, are shown in Table 5.

[Test Example 3]

(Measurement Results and Evaluation of Floor Impact Sound Level)

In this test, the measurement results of the floor impact sound level for each test model set were the type of impact source, the shape and thickness of the waste tire chip, the shape of the waste tire chip for the same thickness, the presence or absence of waterproof paper covering, and the lifting of the insulating material. The model was evaluated by the presence or absence of a floor finishing material and compared with the existing floor structure.

[Floor Impact Sound Level by Type and Thickness of Waste Tire Chip]

(1) Floor impact sound level by granule type

end. Light impact

Table 6 shows the results of the measurement and evaluation of the lightweight floor impact sound for the granule type among the waste tire chips used as the floor impact sound reduction material in this study.

As can be seen from these results, each test model composed of floating floor structure using granular waste tire chip has 1 ~ 2 floor impact sound blocking performance against light impact source than existing floor structure applied by S Construction Company. It can be seen that the grade (5 ~ 10㏈) is improved.

In addition, the impact noise blocking performance by thickness selected in this test is not large, but the thicker the thickness, the better the performance.

I. Heavy impact sound

Table 7 shows the measurement results and evaluation results of the weight floor impact sound blocking performance for the granule type of the waste tire chips. As shown in Table 7, the barrier property against heavy impact sound of each test model composed of floating floor structure using granular waste tire chip is different from the existing floor structure applied by S Construction Company, unlike the evaluation result of light impact sound. The performance improvement effect is similar to, but not so great. In addition, the thicker the impact sound blocking performance of the impact sound reducing material is slightly better performance, but the difference is not large, the test model is only the case of the floor structure consisting of the impact sound reduction material thickness of 30mm.

(2) Floor impact sound level by fiber type

end. Light impact

In this test, the results of the measurement and evaluation of the lightweight floor impact sound for the fiber type among the tire chips used as the floor impact sound reduction material are shown in Table 8. As shown in Table 8, each test model composed of floating floor structure using fiber-type waste tire chip has lower floor impact sound blocking performance for light impact source than conventional floor structure applied in S Construction, like granule type. It can be seen that the grade is 1 ~ 2 (5 ~ 10㏈). In addition, the impact sound blocking performance of each thickness selected in this test is not a big difference, but the thicker the thickness, the better the performance.

I. Heavy impact sound

Table 9 shows the measurement results and evaluation results of the weight floor impact sound blocking performance for the fiber type of the tire chip used as the floor impact sound reduction material according to the present invention. As shown in the table, the blocking performance against the heavy impact sound of each test model composed of a floating bottom structure using a fiber-type Fethier chip is not improved more than the evaluation result of the light impact sound, but it has a thickness of 10 mm. Except in the case of using as, it was found to show the improvement of the first grade than the impact sound blocking performance of the existing floor structure applied by S Construction. In addition, the impact sound blocking performance by thickness of the impact noise reducing material was found to be somewhat better as the thickness is thicker, but the difference is not large. Among the test models, the test model that satisfies the criteria prescribed by the performance certification system of industrialized houses is the Except for the test model that made up the floor structure with the thickness of 10mm, all of them satisfied the criteria, and all of them were grade 3 regardless of the thickness of the impact noise reducing material.

[Granular type and fiber type bottom impact sound level difference]

(1) light impact

In order to confirm a good shape of the floor impact sound blocking performance among the waste tire chips used in the present invention, the blocking performance against the light impact sound was compared for the granule type and the fiber type of the same thickness. The results are shown in Table 10. As shown in this table, the blocking performance difference of the light impact sound according to the shape of the waste tire chip did not show any significant difference or tendency by thickness. As a result, it can be seen that the shape of the waste tire chip used as the impact noise reducing material in the present study does not significantly affect the blocking performance of the light impact sound.

(2) heavy impact sound

In this test, in order to identify the shape of the waste tire chip with good bottom impact sound blocking performance among the waste tire chips, the blocking performance against the heavy impact sound was compared between the granule type and the fiber type of the same thickness. The results are shown in Table 11.

As shown in Table 11, there are some differences in the floor impact sound blocking performance depending on the thickness, but unlike the evaluation results of the light impact sound, the fiber type is better in blocking the heavy impact sound than the granule type.

As shown in the above test example, as a result of testing using the floor impact sound reducing material of the present invention, it can be seen that the reduction of the floor impact sound is remarkable, and is useful as a floor soundproofing dustproof material of an apartment house.

Claims (9)

A waste floor soundproofing material characterized in that the waste tire pulverized product is blended with a curing accelerator, a binder of aqueous tartaric acid, and a urethane-based binder (Bider B) composed of polyol 825, ethyl acetate, and isocyanates. The waste tire pulverized product was polymerized with a mixture of butyl acetate monomer, vinyl acetate monomer, acrylic acid, polyvinylacetate, initiator and water, and the vinyl acetate-ethylene copolymer was mixed in a ratio of 7 to 8.5: 3 to 1.5. Soundproofed vibration damper for house floor characterized by mixing in a binder (binder C). The floor soundproofing dustproof material according to claim 1, wherein the isocyanates in the binder B are tolylene diisocyanate or a mixture of tolylene diisocyanate and polyisocyanate. The floor soundproofing dustproof material according to claim 1, wherein the pet tire is granule having a particle size of 1 to 5 mm or a fiber type waste tire pulverized material having a thickness of 0.5 mm to 1.0 mm and a length of 30 mm or less. The floor soundproofing dustproof material according to claim 1, wherein the curing accelerator is a 5 to 7% tar tar solution. The floor soundproofing dustproof material according to claim 1, wherein the composition ratio of the binder B is 55 to 70 parts by weight of polyol 825 (Korean polyol), 20 to 35 parts by weight of ethyl acetate, and 5 to 15 parts by weight of diisocyanate. The floor soundproofing dustproof material according to claim 1, wherein the mixing ratio of the hardening accelerator to 90 parts by weight of the waste tire pulverized product is 2 to 8 parts by weight, and the mixing ratio of the binder B is 4 to 8 parts by weight. 3. The bottom soundproofed dustproof material according to claim 2, wherein the waste tire pulverized product contains the pulverized waste rubber and the waste foot styrene granules. The polymer of Claim 2 obtained by superposing | polymerizing 3 weight part of butyl acetate monomers, 37.6 weight part of vinyl acetate monomers, 2.9 weight part of acrylic acid, 4.5 weight part of polyvinyl alcohol, and 0.6 weight part sodium bicarbonate which is a polymerization initiator, A floor soundproofing dustproof material, comprising a mixture of 85 parts by weight and 15-30 parts by weight of vinyl acetate-ethylene copolymer.