WO2019103270A1

WO2019103270A1 - Waterproof flooring material for parking lots, factories, roads or rooftops, and method for constructing same

Info

Publication number: WO2019103270A1
Application number: PCT/KR2018/008028
Authority: WO
Inventors: 최동현; 박혜정
Original assignee: 로드켐 주식회사
Priority date: 2017-11-27
Filing date: 2018-07-16
Publication date: 2019-05-31
Also published as: KR101868863B1

Abstract

The present invention relates to a waterproof flooring material for parking lots, factories, roads or rooftops and a method for constructing same, and particularly relates to a method for constructing a waterproof flooring material, comprising, for the purpose of maintaining non-slip properties for a long time: a first step of applying, onto a floor surface, a mixture of epoxy or urethane, stone power having a particle size of 2 - 350㎛ and an apparent specific gravity of 1.2, and silica power having a particle size of 13 - 265㎛ and an apparent specific gravity of 0.03 - 0.1, thereby forming an epoxy mixture layer or a urethane mixture layer; a second step of first spraying, onto the epoxy mixture layer or the urethane mixture layer, silica sand having a relatively large particle size, and then spraying silica sand having a relatively small particle size thereonto, thereby forming a silica sand layer; and a third step of applying, onto the silica sand layer, a mixture of epoxy or urethane, stone power having a particle size of 2 - 350㎛ and an apparent specific gravity of 1.2, and silica powder having a particle size of 13 - 265㎛ and an apparent specific gravity of 0.03 - 0.1, thereby forming a cover layer.

Description

Waterproof floors in parking lots, factories, roads or rooftops and their construction methods

The present invention relates to a waterproof flooring applied to a floor or a roof floor such as an apartment, a building, a factory, a parking lot such as a road and a school, and a construction method thereof.

In general, existing apartment complexes, theme streets, park plazas, parking lots, bicycle roads, sidewalks, coast roads, and crosswalks are generally made of gray asphalt or concrete. It is the fact that it hurts.

In addition, the road surface packed with such uniform asphalt or concrete has a disadvantage in that it is vulnerable to breakage because its strength and abrasion resistance deteriorate, and it is also vulnerable to slip and radiation.

In addition, if exposed to the concrete surface in concrete structures such as general buildings and factories, the bottom surface is broken or aged due to the deterioration of concrete in the long term, causing the pollution of concrete due to the generation of concrete dust harmful to human body.

Therefore, various methods of using asphalt or concrete pavement as a flooring material have been developed. In particular, in the case of a parking lot floor or a roof floor, it is preferable to suppress the generation of cracks or dust by excluding concrete, Most of the flooring used for this purpose is a synthetic resin such as epoxy or urethane.

As an example, in Korean Patent No. 10-0912816 (Patent Document 1), at least one selected from the group consisting of an acrylic resin, a polyacrylate, a polyurethane, a polyolefin and a silicone resin is applied to the surface of the substrate in a thickness of 0.4 to 0.6 mm, For 3 hours to form a primer layer. The primer layer is mixed with the base and the curing agent at a weight ratio of 1: 2 to 1: 0.6 at 900 to 1100 rpm for 3 to 5 minutes to form a primer layer having a thickness of 0.4 to 0.6 mm And a step S2 of forming a top layer with a predetermined thickness.

Such a patent document is disadvantageous in that the generation of harmful substances is suppressed and slippage can not be prevented although it is good in terms of adhesion strength, compressive strength and abrasion resistance.

Even though the subject matter constituting the upper layer in Patent Document 1 is composed of a mixture of magnesium oxide, white cement, fluidizing agent, antifoaming agent, TiO2, and silica powder, where silica powder is included and is expected to have non-slip properties , Since the hardening agent sinks downward, the silica powder particles are exposed to the road surface in a state that the particles are not sufficiently aggregated in the hardener, so that it is difficult to maintain the non-slip property for a long time by easily separating from the upper layer It remains a challenge.

Disclosure of the Invention The present invention has been made to solve the problems of the prior art described above, and it is an object of the present invention to provide a floor material which is applied to a parking lot, a roof and a road floor, The present invention is directed to providing a parking lot, a roof and a road surface waterproofing flooring, and a construction method thereof.

According to an aspect of the present invention,

A mixture of epoxy or urethane on a bottom surface, a stone powder having a particle diameter of 2 to 350 占 퐉 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 占 퐉 and an apparent specific gravity of 0.03 to 0.1 is applied to form a first epoxy mixture layer or A first step of forming a first urethane mixture layer,

A silica sand having a particle diameter of 5 to 40 meshes is first sprayed on the first epoxy mixture layer or the first urethane mixture layer and then a silica sand having a particle diameter of 20 to 60 mesh is applied To form a first silica sand layer,

A mixture of epoxy or urethane, a stone powder having a particle diameter of 2 to 350 탆 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 탆 and an apparent specific gravity of 0.03 to 0.1 is applied on the first silica sand layer to form a second A third step of forming an epoxy mixture layer or a second urethane mixture layer,

A silica sand having a particle diameter of 5 to 40 meshes is first sprayed on the second epoxy mixture layer or the second urethane mixture layer and then a silica sand having a particle diameter of 20 to 60 mesh is applied To form a second silica sand layer,

A mixture of epoxy or urethane, a stone powder having a particle diameter of 2 to 350 占 퐉 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 占 퐉 and an apparent specific gravity of 0.03 to 0.1 was applied on the second silica- And a fifth step of forming the second electrode layer.

According to the present invention, the epoxy mixture layer or the urethane mixture layer or the urethane mixture layer and the cover layer each include a low specific gravity silica powder having a significantly low specific gravity, thereby forming an epoxy mixture layer or a urethane mixture layer or a urethane mixture layer and a cover layer Epoxy or urethane can be minimized after being applied on silica sand, epoxy or urethane containing stone powder is coated like a silica sand wrapping and does not sink after application, so adhesion of silica sand and silica sand is improved It is possible to minimize the phenomenon of desorption (desorption) of the silica sand during the process of use after completion, so that it has excellent durability such as long-term non-slip and flat surface waterproof floor property can be maintained.

In addition, since silica sand is filled in the space between the silica sand of the large diameter, the aggregation force of each sand and epoxy can be doubled and a solid bottom can be formed.

1 is a sectional view (a) and a plan view (b) of a waterproof floor material formed according to a method of constructing a waterproof floor material according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a waterproof floor material formed according to a method of constructing a waterproof floor material according to a second embodiment of the present invention.

3 is a particle size analysis of the silica powder used in the waterproof flooring according to the present invention.

4 is a particle size analysis of the stone powder used in the waterproof flooring according to the present invention.

5 is a particle size analysis of the silica sand used in the waterproof flooring according to the present invention.

[Description]

1 ... Epoxy

1 '... urethane

2 ... Stone powder

3 ... silica powder

4 ... silica sand

10 ... bottom surface

20 ... First epoxy mixture layer or first urethane mixture layer

30 ... First silica sand layer

40 ... second epoxy mixture layer or second urethane mixture layer

50 ... Second silica sand layer

60 ... cover layer

The waterproof flooring of the parking lot, the factory, the road or the roof of the present invention and the construction method thereof,

A mixture of epoxy or urethane, a stone powder having a particle diameter of 2 to 350 占 퐉 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 占 퐉 and an apparent specific gravity of 0.03 to 0.1 was applied on the second silica- And a fifth step of forming the second electrode.

While the present invention has been described in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood, however, that there is no intention to limit the invention to the form just described, and the spirit and scope of the present invention encompasses the ordinary variations, equivalents, and alternatives of the illustrated forms.

1 is a cross-sectional view (a) and a plan view (b) of a waterproof floor material formed according to a method of constructing a waterproof floor material according to the present invention.

1, the method for manufacturing a waterproof flooring according to the present invention includes a first step of forming a first epoxy mixture layer or a first urethane mixture layer 20 on a floor surface 10, A second step of forming a silica sand layer 30, a third step of forming a second epoxy mixture layer or a second urethane mixture layer 40, a fourth step of forming a second silica sand layer 50, And a fifth step of forming a cover layer (60).

The first step is to form an epoxy 1 on a bottom surface 10 of a car park, a factory, a road or a roof, a stone powder 2 having an apparent specific gravity of 1.2 and a particle diameter of 13 to 265 Or a mixture of silica powders 3 having an apparent specific gravity of 0.03 to 0.1 to form a first epoxy mixture layer 20 or a urethane 1 ' A step of forming a first urethane mixture layer 20 by applying a mixture of a stone powder 2 having an apparent specific gravity of 1.2 to 350 탆 and an apparent specific gravity of 1.2 and a silica powder 3 having a particle diameter of 13 to 265 탆 and an apparent specific gravity of 0.03 to 0.1 to be.

The low specific gravity silica powder (3) is preferably selected such that particles having a particle diameter of 13 to 265 μm are dispersed as shown in FIG. 3, and the low specific gravity silica powder (3) The apparent specific gravity was measured to be 0.04 as shown in Table 1 below. (The results in FIG. 3 and Table 1 are the results of the KTR test conducted on the low specific gravity silica powder).

4, it is preferable to select the above-mentioned stone powder 2 in which particles having a particle size of 2 to 350 μm are dispersed, and the apparent specific gravity of the stone powder 2 in which such particles are distributed is selected from the following The results are shown in Table 2. As shown in FIG. 4 and Table 2, the results are the test results of KTR (Korean Chemical Fusion Test Institute) for stone powder.

시험결과Test result
시험항목Test Items	단위unit	시류구분Classification	결과치Results	시험방법Test Methods
겉보기비중()Apparent weight ()	--	--	0.040.04	KS M 0602 : 2010(준용)KS M 0602: 2010 (Application)

시험결과Test result
시험항목Test Items	단위unit	시류구분Classification	결과치Results	시험방법Test Methods
겉보기비중Apparent specific gravity	--	--	1.201.20	KS M 0602 : 2010KS M 0602: 2010

Since the silica powder 3 is significantly lower than the specific gravity 1 of water to 1/10 or less, when the silica powder 3 is mixed with the liquid epoxy 1 or the urethane 1 ', the silica powder 3 is a solid powder but the epoxy 1 or urethane (1) or urethane (1 ') is dispersed in the form of an emulsion in the epoxy resin (1') so that the epoxy (1) or the urethane (1 ') does not flow down and floats around the silica powder (3) The entirety of the stone powder 2 is covered with the epoxy 1 or the urethane 1 'when the cured product is cured with the lapse of time, so that the stone powder 2 is completely covered with the epoxy 1 or the urethane 1' Is not exposed to the outer surface.

A silica powder having an apparent specific gravity of less than 0.03 is not preferable because it is difficult to manufacture. Conversely, a silica powder having an apparent specific gravity higher than 0.1 is not preferred because the specific gravity is relatively large and the floatation performance is lowered.

The mixing ratio of the epoxy (1), the stone powder (2) and the silica powder (3) may be formulated in a volume ratio of 0.05 to 0.3 parts by volume of the stone powder and 0.05 to 0.2 parts by volume of the epoxy resin, The mixing ratio of the urethane (1 '), the stone powder (2) and the silica powder (3) is preferably in the range of 1: 0.05 to 0.2, (1 ') and silica powder (3) are mixed in a volume ratio of 1: 0.05 to 0.2, in particular, in a volume ratio of 0.05 to 0.3 volume of a stone powder to a volume ratio of 0.05 to 0.2 of a silica powder with respect to a volume ratio desirable.

When the ratio of the silica powder (3) to the volume ratio of the epoxy (1) or the urethane (1 ') is more than 0.2 volume ratio, the fluidity is lowered and the coating property is poor. When the mixing ratio is less than 0.05 volume ratio, The epoxy or urethane is submerged as desired and can not have floating performance.

The second step is to spray a silica sand (4) having a particle diameter of 5 to 40 mesh on the first epoxy mixture layer or the first urethane mixture layer (20) And then spraying a silica sand 4 of 60 mesh to form a first silica sand layer 30.

In this case, it is preferable that the particle size of the silica sand (4) to be sprayed after the second step is smaller than the particle size of the silica sand (4) to be sprayed. In this case, The silica sand of small particle size is filled to increase the density of the silica sand while the fluidity of the subsequently applied epoxy horn or urethane mixture is suppressed and the gap between the silica sand and silica sand is reduced to form a solid coating layer.

In the third step, a first stage epoxy mixture or urethane mixture, that is, an epoxy (1), a stone powder having a particle size of 2 to 350 μm and an apparent specific gravity of 1.2 is formed on the first silica sand layer (30) 2 or a mixture of the silica powder 3 having a particle diameter of 13 to 265 μm and an apparent specific gravity of 0.03 to 0.1 to form a second epoxy mixture layer 40 or a urethane 1 ' A step of forming a second urethane mixture layer 40 by applying a mixture of a stone powder 2 having an apparent specific gravity of 1.2 to 350 탆 and an apparent specific gravity of 1.2 and a silica powder 3 having a particle diameter of 13 to 265 탆 and an apparent specific gravity of 0.03 to 0.1 to be.

When the second epoxy mixture layer or the second urethane mixture layer 40 of the third stage is applied onto the first silica sand layer 30 of the second stage, the epoxy 1 or the urethane 1 ' The silica sand 4 of the fourth step to be sprayed next is kept in contact with the second-stage silica sand 4 and the second-stage silica sand 4 because the silica sand 4 is wrapped around the second- The bonding can be maintained firmly, which is a core technology of the present invention.

If the general epoxy or urethane is applied instead of the epoxy mixture or urethane mixture of the present invention, the general epoxy or urethane applied to the second silica sand layer (4) immediately flows down to the silica gel (4) The adhesion strength between the silica sand 4 of the fourth step and the silica sand 4 of the second step which are spread after the incineration is at a level that the epoxy 1 or the urethane 1 ' So that the vehicle can not withstand a load such as a traffic in a parking lot or a road for a long time.

In the fourth step, a silica sand (4) having a particle diameter of 5 to 40 mesh is preliminarily sprayed on the second epoxy mixture layer or the second urethane mixture layer (40) And then the second silica sand layer 50 is formed by spraying a silica sand 4 of 60 mesh.

In this case, the particle size of the silica sand 4 to be sprayed after the fourth step S2 is preferably smaller than the particle size of the silica sand 4 to be sprayed. In this case, The silica sand 4 having a small particle diameter is filled in the space of the second silica sand layer 50 so that the density of the second silica sand layer 50 is increased and the fluidity of the subsequently applied epoxy mixture or urethane mixture is suppressed and the voids of the silica sand and silica sand are reduced, A coating film layer can be formed.

Since the first step and the second step can be performed only by one step, the fifth step can be performed immediately after the third and fourth steps are omitted. In addition, the present invention can be applied to various situations such as a construction environment, Accordingly, the third to fourth steps may be repeated one or more times.

The fifth step is a step in which the epoxy 1 and the urethane 1 'are coated on the second silica sand layer 50 (or the first silica sand layer 30 when the third and fourth steps are omitted) (2) having a particle diameter of 2 to 350 占 퐉 and an apparent specific gravity of 1.2, and a silica powder (3) having an apparent specific gravity of 0.03 to 0.1 with a particle diameter of 13 to 265 占 퐉, 60 are formed.

Since the silica powder (3) is significantly lower than the specific gravity of water (1) by 1/10 or less, when the silica powder is mixed with the epoxy (1) or the urethane (1 ') as a liquid adhesive, the silica powder is a solid powder, The epoxy (1) or urethane (1 ') is dispersed in the form of an emulsion in the epoxy (1) or the urethane (1') because it plays a role of lifting up the silica powder having a low specific gravity, When the epoxy 1 or the urethane 1 'is hardened, the whole of the stone powder 2 is covered with epoxy or urethane so that the stone powder 2 can be prevented from falling off, It is possible to minimize exposure to the outside and to maintain a film of a certain thickness around the silica sand 4.

The mixing ratio of the epoxy, the stone powder (2) and the silica powder (3) may be from 0.05 to 0.3 parts by volume of the stone powder and from 0.05 to 0.2 parts by volume of the silica powder with respect to the volume ratio of the epoxy resin. Particularly, The mixing ratio of the urethane, the stone powder (2) and the silica powder (3) is preferably 0.05 to 0.3 volume ratio of the stone powder to the volume ratio of 1 volume of the urethane, and 0.05 to 0.2 volume ratio of the silica powder The blending ratio of urethane and silica powder is preferably 1: 0.05 to 0.2 volume ratio.

When the ratio of the silica powder (3) to the epoxy resin or urethane resin is more than 0.2 volume ratio, the fluidity is lowered and the coating property is poor. When the amount is less than 0.05 volume ratio, the negative control is not effected. Can not be expected.

2, the second embodiment of the present invention is an epoxy resin composition comprising an epoxy (1), a stone powder (2) having a particle diameter of 2 to 350 μm and an apparent specific gravity of 1.2, a particle diameter of 13 to 265 μm and an apparent specific gravity of 0.03 A silica powder 4 having a particle diameter of 5 to 40 mesh and a silica sand 4 having a particle diameter of 20 to 60 mesh are mixed together or a urethane 1 (2) having a particle diameter of 2 to 350 μm and an apparent specific gravity of 1.2, a silica powder (3) having an apparent specific gravity of 0.03 to 0.1 and a particle diameter of 13 to 265 μm, a particle diameter of 5 to 40 mesh, Of silica sand (4) and silica sand (4) having a particle size of 20 to 60 mesh are mixed together at one time to coat the floor of asphalt or concrete.

The mixture of the epoxy (1), the stone powder (2) and the silica powder (3) is referred to as an epoxy mixture and the mixture of the urethane (1 ' , Wherein the mixing ratio of the epoxy mixture may be from 0.05 to 0.3 parts by volume of the stone powder and from 0.05 to 0.2 parts by volume of the silica powder with respect to the volume ratio of the epoxy resin to one part by volume of the urethane mixture. The blending ratio of the urethane mixture is 0.05 to 0.3 parts by volume of the stone powder, The powder may be formulated in a 0.05 to 0.2 volume ratio.

A mixture of a silica sand (4) having a particle diameter of 5 to 40 mesh and a silica sand (4) having a particle diameter of 20 to 60 mesh is referred to as a silica sand mixture. The mixing ratio of the silica sand mixture is 30 to 70 volume ratio: 70 to 30 volume ratio.

The mixing ratio of the epoxy mixture to the silica sand mixture, and the blending ratio of the urethane mixture and the silica sand mixture may be set to 1: 2 to 5 volume ratio, respectively.

Meanwhile, the present invention provides a construction method for repairing asphalt or concrete cracks.

(2) a silica powder (2) having an apparent specific gravity of 1.2, a silica powder (3) having an apparent specific gravity of 0.03 to 0.1 and a particle diameter of 40 to 40 nm, (1 ') having a particle size of 2 to 350 μm and an apparent specific gravity of 1.2 or more and an apparent specific gravity of 1.27 or a silica sand having an apparent specific gravity of 1.27 are filled in a crick on an asphalt or concrete floor at one time, , A silica powder (3) having a particle diameter of 13 to 265 占 퐉 and an apparent specific gravity of 0.03 to 0.1, a silica sand mixture having a particle diameter of 40 to 890 占 퐉 and an apparent specific gravity of 1.27 Can be filled in the crick as shown in FIG.

5, it is preferable to select the silica sand dispersed with particles having a particle diameter of 40 to 890 탆, and the apparent specific gravity of the silica sand in which such particles are dispersed is measured as 1.27 as shown in Table 3 below (The results in Figs. 5 and 3 are the test results of KTR (Korea Chemical Fusion Test Institute) for silica sand).

시험결과Test result
시험항목Test Items	단위unit	시류구분Classification	결과치Results	시험방법Test Methods
겉보기비중Apparent specific gravity	--	--	1.271.27	KS M 0602 : 2010KS M 0602: 2010

Here, an epoxy mixture is formed by mixing 0.05 to 0.3 parts by volume of a stone powder and 0.05 to 0.2 parts by volume of a silica powder, or 0.05 to 0.3 parts by volume of a stone powder and 0.05 to 0.2 parts by volume of silica powder with respect to 1 part by volume of an urethane, After forming the urethane mixture,

The epoxy sand mixture may be formed by blending 2 to 5 parts by volume of the silica sand with 1 part by volume of the epoxy mixture. Alternatively, the urethane sand mixture may be formed by blending 2 to 5 parts by volume of the silica sand with 1 part by volume of the urethane mixture.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims. It will not.

Claims

A mixture of epoxy, a stone powder having a particle size of 2 to 350 占 퐉 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 占 퐉 and an apparent specific gravity of 0.03 to 0.1 is applied on the bottom surface to form a first epoxy mixture layer , Urethane on the bottom surface, a mixture of a stone powder having a particle diameter of 2 to 350 탆 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 탆 and an apparent specific gravity of 0.03 to 0.1 to form a first urethane mixture layer ;

A silica sand having a particle diameter of 5 to 40 mesh is sprayed on the first epoxy mixture layer or the first urethane mixture layer and then a silica sand having a particle diameter of 20 to 60 mesh is applied ) To form a first silica sand layer;

A mixture of epoxy, a stone powder having a particle diameter of 2 to 350 占 퐉 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 占 퐉 and an apparent specific gravity of 0.03 to 0.1 was applied on the first silica sand layer to form a second epoxy mixture Or a mixture of urethane on the first silica sand layer, a stone powder having a particle diameter of 2 to 350 μm and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 μm and an apparent specific gravity of 0.03 to 0.1 A third step of forming a second urethane mixture layer;

A silica sand having a particle diameter of 5 to 40 mesh is sprayed on the second epoxy mixture layer or the second urethane mixture layer and then a silica sand having a particle diameter of 20 to 60 mesh is applied ) To form a second silica sand layer;

A mixture of a mixture of a stone powder having a particle size of 2 to 350 mu m and an apparent specific gravity of 1.2 and a silica powder having a particle size of 13 to 265 mu m and an apparent specific gravity of 0.03 to 0.1 in either epoxy or urethane was applied onto the second silica sand layer And a fifth step of forming a cover layer,

The epoxy, the stone powder and the silica powder are blended in a ratio of 0.05 to 0.3 by volume of the stone powder and 0.05 to 0.2 by volume of the silica powder with respect to the volume ratio of the epoxy 1,

Wherein the urethane, the stone powder and the silica powder are mixed at a ratio of 0.05 to 0.3 parts by volume of the stone powder and 0.05 to 0.2 parts by volume of the silica powder with respect to the volume ratio of the urethane.
The method according to claim 1,

Wherein the particle size of the silica sand to be sprayed after the second and fourth steps is smaller than the particle size of the silica sand to be sprayed.
The method according to claim 1,

Wherein the third step and the fourth step are omitted, and the fifth step is performed after the second step.
The method according to claim 1,

Wherein the third step and the fourth step are performed one or more times in the third and fourth steps, and the fifth step is performed.
An epoxy, a stone powder having a particle diameter of 2 to 350 μm and an apparent specific gravity of 1.2, a silica powder having a particle diameter of 13 to 265 μm and an apparent specific gravity of 0.03 to 0.1, a silica sand having a particle diameter of 5 to 40 mesh, A silica powder is sprayed on the bottom surface, 0.05 to 0.3 parts by volume of a stone powder and 0.05 to 0.2 parts by volume of a silica powder are mixed to form an epoxy mixture,

Urethane, a stone powder having a particle diameter of 2 to 350 μm and an apparent specific gravity of 1.2, a silica powder having a particle diameter of 13 to 265 μm and an apparent specific gravity of 0.03 to 0.1, a silica sand having a particle diameter of 5 to 40 mesh, By mass of silica powder and 0.05 to 0.2 parts by volume of a silica powder and a silica powder in an amount of 0.05 to 0.3 parts by volume based on 1 part by volume of the urethane are mixed to form a urethane mixture,

A silica sand having a particle diameter of 5 to 40 mesh and a silica sand having a particle diameter of 20 to 60 mesh are mixed at a ratio of 30 to 70 volume ratio: 70 to 30 volume ratio to form a silica sand mixture,

The mixing ratio of the epoxy mixture to the silica sand mixture is 1: 2 to 5 parts by volume,

Wherein the mixing ratio of the urethane mixture to the silica sand mixture is 1: 2 to 5 volume parts.
As flooring for repairing floor cracks,

A silica powder having a particle diameter of 2 to 350 占 퐉 and an apparent specific gravity of 1.2, a silica powder having a particle diameter of 13 to 265 占 퐉 and an apparent specific gravity of 0.03 to 0.1, a silica sand having a particle diameter of 40 to 890 占 퐉 and an apparent specific gravity of 1.27 0.05 to 0.3 volume ratio of the stone powder and 0.05 to 0.2 volume ratio of the silica powder to the epoxy 1 volume ratio are mixed to form an epoxy mixture. The epoxy mixture and the silica sand are mixed in a volume ratio of 1: 2 to 5,

Urethane, a silica powder having a particle diameter of 2 to 350 탆 and an apparent specific gravity of 1.2, a silica powder having a particle diameter of 13 to 265 탆 and an apparent specific gravity of 0.03 to 0.1, a silica sand having a particle diameter of 40 to 890 탆 and an apparent specific gravity of 1.27 Wherein 0.05 to 0.3 parts by volume of a stone powder and 0.05 to 0.2 parts by volume of a silica powder are mixed to form a urethane mixture with respect to the volume ratio of the urethane 1 and the urethane mixture and the silica sand are mixed in a volume ratio of 1: Flooring material.
A flooring material for applying to a floor surface,

An epoxy, a stone powder having a particle diameter of 2 to 350 占 퐉 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 占 퐉 and an apparent specific gravity of 0.03 to 0.1, wherein the mixing ratio of the epoxy, 0.05 to 0.3 volume ratio of the stone powder and 0.05 to 0.2 volume ratio of the silica powder to the volume ratio of 1,

Urethane, a stone powder having a particle diameter of 2 to 350 탆 and an apparent specific gravity of 1.2, and a silica powder having a particle diameter of 13 to 265 탆 and an apparent specific gravity of 0.03 to 0.1, wherein the mixing ratio of the urethane, the stone powder and the silica powder is urethane 0.05 to 0.3 parts by volume of a stone powder and 0.05 to 0.2 parts by volume of a silica powder with respect to a volume ratio of 1: 1.