KR20160146210A

KR20160146210A - Method reinforce surface of concrete with permeable lithium silicate

Info

Publication number: KR20160146210A
Application number: KR1020150083162A
Authority: KR
Inventors: 강영갑
Original assignee: 강영갑
Priority date: 2015-06-12
Filing date: 2015-06-12
Publication date: 2016-12-21

Abstract

The present invention relates to a method for reinforcing a pervious concrete surface by lithium silicate, comprising a purifying step of cleaning a concrete surface to be reinforced; an applying step of adding moisture to the cleaned concrete surface and applying a lithium silicate reinforcing agent to allow the lithium silicate reinforcing agent to permeate into concrete pores; a curing step of curing lithium hydrate of hydrated calcium silicate generated by hydration of permeated lithium disilicate in a hyalodentine layer; a grinding step of grinding the reinforcing agent-cured concrete surface in a smooth surface; and a polishing step of finishing the surface in a glossy surface. According to the present invention, the lithium disilicate on the concrete bottom surface is cured in a hyalodentine layer to block permeation of water, chemicals and various pollutants to prevent deterioration of the surface and improve wear resistance and durability. Therefore, the method can be safely used by being applied to a concrete bottom surface of a pharmaceutical company, a food factory, a hospital, various laboratories, a high tech device room, a semiconductor factory, and other place requiring clean and hygienic environment.

Description

METHOD REINFORCEMENT SURFACE WITH CONCRETE WITH PERMEABLE LITHIUM SILICATE FIELD OF THE INVENTION [0001]

The present invention relates to a method for reinforcing a surface of a permeable concrete of lithium silicate, comprising the steps of: cleaning the surface of the concrete to be cleaned; cleaning the surface of the concrete by applying moisture to the surface of the cleaned concrete; applying a Lithium Silicate reinforcing agent A step of applying a lithium silicate strengthening agent and a hardening step of vitrifying the hardened steel sheet by vitrification of the impregnated lithium silicate and the calcium hydroxide in the concrete to form a glassy layer; And a polishing step of finishing with a glossy surface, and is reinforced with a vitreous surface of an off-white color.

According to the present invention, the concrete floor surface is cured with a glass layer to prevent penetration of water, chemicals, and various pollutants, thereby preventing deterioration of the surface and improving wear resistance and durability, It can be used more safely and usefully.

Generally, since the bottom surface of concrete structure is paved with gravel, sand and cement material like the material of the structure, the concrete surface is rough and the surface strength of the bottom is not high. Dust and hazardous substances are bought into the pores of the surface

), So that it is not easily removed even if it is cleaned, and it is difficult to keep it hygienically clean.

Therefore, when the strength and density of the bottom of the concrete structure is increased, and chemical safety and hygiene are required, a synthetic resin material is coated on the bottom of the concrete, or a reinforcing agent composed of an agglutinated hydration material There are cases where construction is done.

Also, various prior arts have been disclosed for reinforcing the surface of concrete, and examples of the prior art of strengthening the concrete floor of a building in connection with the present invention are as follows.

The invention of Japanese Patent Application Laid-Open No. 10-0526418 (published on Nov. 11, 2005) is characterized in that a penetration enhancing composition in which tetraethoxysilane and ethanol are mixed in a ratio of 3: 7 is mixed with 20% of lithium polysilicate, 0.05% The silicate is mixed in an appropriate amount and distilled water is added thereto to adjust the weight to 100% by weight to be applied to the concrete surface, and after 2 hours, the deterioration inhibiting composition is applied to reinforce the concrete surface.

The invention of Japanese Patent Application Laid-Open No. 10-0644768 (Nov. 14, 2006) is characterized in that a silica powder, a fungicide, a defoaming agent and water are added to 50 to 80% by weight of a silicate resin mixture comprising a sodium silicate resin and a metal modified sodium silicate resin, The concrete surface is reinforced by applying the reinforced concrete surface to the concrete surface.

(3) The invention of Patent Application No. 10-0855625 (Mar. 1, 2008.) discloses a method for producing a waterproofing agent for a concrete surface, which comprises a silicate, a polysilicate, a polymer dispersion, a biochemical substance, anhydrous alcohol, And the waterproofing agent penetrates and diffuses into the concrete to be waterproofed.

(4) The invention of the registered jaw hole 10-1007193 (published on Jan. 12, 2011) is a method in which the composition of diphenylmethane diisocyanate, methyl methacrylate, diglycidyl ether bisphenol and ethylene glycol is stirred and cement, white cement, Sand and water are mixed to prevent cracking with isocyanate mortar and then mixed with cement, white cement, saturated hydrocarbons, polydimethylsiloxane, isooctyltriethoxysilane, octyltriethoxysilane, methotrimethoxysilane, isopropane And the concrete surface was reinforced by applying a deterioration inhibitor for concrete reinforcing agent composed of magnesium fluoride, zinc oxide, an acrylic polymer, a surfactant and a dispersing agent.

(5) The invention of Patent Publication No. 10-1333531 (published on Nov. 31, 2013) discloses a concrete surface reinforcing agent containing polystyrene butyl acrylate, polyvinyl acetate, polyartic acid ester, phenol resin emulsion, and methyl cellulose as a concrete of sewage And the surface of the concrete pipe is reinforced by laminating it on the inner main surface of the pipeline to increase the water resistance and durability.

As the reinforcing agent for the surface of the concrete mainly used in the above-mentioned prior art, high molecular weight materials such as calcium oxide, magnesium oxide aluminum oxide, silicate silane, or epoxy resin have been used.

Since these inorganic materials have a relatively large particle size, the range of penetration of the reinforcing agent through the minute pores formed in the concrete is extremely limited. Therefore, the surface strength and durability of the concrete are not high and the penetration of chemical substances and oily substances is prevented There is a lack of function to perform.

The present invention relates to a method of strengthening a concrete surface, in which a lithium silicate concrete reinforcing agent is nano-sized and can penetrate deeper through a concrete pore, and a thick penetration layer is formed by the penetration of concrete reinforcing agent and concrete component. It is cured with a glassy layer to completely block the infiltration of water, liquid chemicals and harmful substances of various liquid phases, and further improves abrasion resistance and durability and is suitable for applications requiring cleanliness and hygiene. The development of the method is a challenge.

It is an object of the present invention to provide a method for forming a thick glass layer by applying a reinforcing agent made of an inorganic alkali silicate to a bottom surface of a concrete so that a nano-sized reinforcing agent penetrates deeper on the surface of the concrete, and the infiltrated lithium silicate is vitrified by calcium hydroxide and hydration of the cement, To thereby provide a method for reinforcing the permeable concrete surface of the lithium silicate, in which the penetration of the liquid chemical substance or the oily substance in the liquid phase and various aqueous solutions is completely blocked.

Another object of the present invention is to provide a method of cleaning a concrete surface, Applying a lithium silicate reinforcement to the concrete surface; Curing the reinforcing agent cured into the glass layer by hydration of the lithium silicate penetrated into the concrete; A polishing step of polishing the concrete surface and a polishing step of polishing with a glossy glassy surface; The present invention provides a method for reinforcing a permeable concrete surface of a lithium silicate.

It is still another object of the present invention to provide a method for preparing a concrete floor which is useful for concrete floors for various purposes requiring a glass layer formed at room temperature by a lithium silicate reinforcing agent on the surface of a concrete and having a beautiful surface and being physically and chemically stable, And to provide a method for reinforcing a permeable concrete surface of a lithium silicate.

In order to strengthen the concrete surface by the penetration and hydration of lithium silicate, the present invention is characterized in that it comprises a step of purifying the concrete surface to be reinforced, a step of applying the lithium silicate strengthening agent, and a step of chemical hydration of the reinforcing agent A curing step of the reinforcing agent to be cured, and a polishing step in which the reinforcing agent finishes with the polished surface and the polished surface of the cured concrete surface.

The step of purifying the concrete surface comprises: In case of reinforcing the existing concrete floor as the cleaning step of the concrete surface, it is necessary to repair the cracked part and the damaged part of the concrete floor, and to reinforce the newly laid concrete floor, the sludge, sand particles, , Dust and so on.

As a cleaning means, vacuum cleaner, sprinkler, blower or the like is used to remove all foreign substances released on the concrete surface.

If water sprinklers are used, make sure that the water pressure is not high enough to prevent the concrete surface from being damaged by water pressure. Use neutral detergent or alkaline detergent to remove oily or other contaminants attached to the concrete surface Cleanly. The cleaner the concrete surface, the better the result.

The step of applying the concrete reinforcing agent comprises: In the above-mentioned purification step, water is dewatered on the cleaned concrete floor surface (surface), so that the water is soaked. Wipe out the water on the floor. Allows sufficient moisture to be present in the concrete surface to allow water to penetrate.

Adding water to the concrete surface to be reinforced is not only hardened by the hydration effect of the concrete cement for decades, but also requires the presence of water because it acts hydration of the calcium silicate of the concrete and concrete of the lithium silicate .

Following the application of the water, the reinforcing agent of the lithium silicate solution having a content of 20% to 25% is applied to the surface of the concrete in which the water is saturated. The applicator is selectively applied according to the amount of work to be applied, such as a sprayer, a brush, or a roller, and is applied in a uniform distribution.

Since the lithium silicate solution selected in the present invention is nano-sized and finer than ordinary sodium or potassium-based surface strengthening agents, it is possible to easily penetrate deep layers through minute voids of the concrete structure. As the penetration range of the lithium silicate solution becomes deeper, the penetration layer becomes larger and the hardening layer of the reinforcing agent becomes larger.

The applied liquid reinforcing agent is penetrated from the concrete surface and repeatedly applied several times according to the degree of penetration, so as to penetrate as deep as possible. When the penetration reaches saturation, the remaining reinforcing agent is applied to the concrete surface.

Curing the reinforcing agent comprises: It is a stabilization step in which hydration of lithium silicate and calcium hydroxide present in concrete proceeds.

Cement of the original concrete typically _{CaO, Al 2 O 3, SO} , 3CaO a deadlock water (膠着物) of minerals. The crystal structure of Ca (OH) ₂ , which is composed of SiO _{2, a} component, or a combination of these components and contains a divalent amount due to hydration of cement, takes the coordination of the cationic octahedron, Composite

), And OH ^- is densely packed between the multiple layers to act as a 'van der waals bond'

In the case of Al (OH) ₃ containing trivalent cations in the cement, one-third of the sites occupied by the cations are pores and the OH- layer is opened, And becomes a three-dimensional coupling.

Si (OH) _{4, which} is a tetravalent cation component, is a siloxane bond that bonds to a tetrahedron, and a cation with a high coordination number such as Ca + is added to form an unstable structure similar to glass .

As described above, there is a void in which the aquatic products are present due to hydration and the nano-sized lithium silicate can be filled.

Therefore, the silicate of the lithium silicate penetrated into the concrete pore hydrates with the calcium hydroxide, so that the hydrated calcium hydrate of the hydrated calcium-silicate is formed into a glassy state, The whole is soon cured to a glassy layer. At this time, Li acts as a silicate metal like Al and contributes to the composition of the glass layer.

Lithium (Li) is a silver-white colored soft metal belonging to the period 1 group and 2 periods of the periodic table, which is widely distributed on the surface of the earth. However, it is a kind of rare earths (rare earths) Alloyed metal is modified, and it is easily combined with organic matter, and rhythm alone is treated as a compound state because it is difficult to handle.

The lithium silicate concrete reinforcing agent of the present invention chemically resembles calcium or magnesium compound, but since lithium always takes a monovalent cation, lithium silicate hydrates with the calcium hydroxide of cement at a free ratio to strengthen the concrete surface It is characterized by vitrification of lithium-hydrate.

The polishing of the concrete surface comprises: The reinforcing agent penetrates the concrete surface and hardens it into a glass layer, and then polishes the concrete surface with a smooth surface.

There are two cases for the above grinding. In one case, only the reinforcing agent is polished. In the other case, the concrete surface is first ground to grind a part of the construction material such as gravel to be partially exposed. Then, a lithium silicate reinforcing agent is applied thereon and then the concrete is ground again. .

The former grinding is to smooth the hardened reinforcement to the glass surface and the latter grinding is to expose the mixture form of the gravel, sand and cement on the concrete surface to produce a marble (aesthetic feeling) It is grinding.

In the grinding step, polish smoothly with a grinding stone of about # 80 to 120 mesh.

By grinding of the cured reinforcement, the concrete surface appears as an off-white hue of vitrified lithium hydrate.

If the surface of the concrete is ground first and then reinforced with a reinforcing agent, then there will be a variety of beautiful patterns such as marble mixed with gravel, sand, cement and reinforcing agent to form concrete.

The concrete surface reinforced in the polishing step forms an amorphous smooth surface in which penetration of substances is blocked like a glass surface.

The polishing step is a final step in which the concrete surface is polished smoothly and then the surface of the glass layer with dense density is polished by polishing.

Polishing is to repeatedly polish the surface using a fine grinding stone or abrasive cloth of 200 to 300 mesh.

The work is simple and the polished surface is finished with a glossy glass surface.

According to the present invention, since the reinforcing agent of the inorganic alkaline rhythm silicate is deeply penetrated into the concrete floor and the thicker penetration layer is hardened into the glass layer, the penetration of chemicals, oily substances and water is completely blocked, It can be applied safely and usefully to various concrete uses such as pharmaceutical and food factories, hospitals, various laboratories, advanced equipment rooms, semiconductor factories, warehouses, gas stations, and other various uses.

According to the present invention, since the reinforcement made of rhythmic silicate penetrates and penetrates deeper into the concrete floor, it hardens as a thick glass layer due to the calcium hydroxide and hydration of the cement, so that a liquid chemical substance or a liquid oily substance, The penetration is completely cut off and the floor becomes safe.

In addition, unlike the case of melting inorganic materials to produce glass, since the glass layer is formed at room temperature by a lithium silicate reinforcing agent on the surface of the concrete, it can be economically constructed, has a beautiful bottom surface, is physically and chemically stable, And can be applied to various applications requiring cleanliness and hygiene.

1 is an illustration of a purifying step of Example 1 of the present invention
Fig. 2 is an illustration of an application step of the reinforcing agent
Figure 3 is an illustration of a curing step of the toughening agent
Figure 4 is an illustration of the polishing step of the strengthening agent
5 shows an example of the polishing step of the reinforcing agent
6 is a view showing an example of a concrete surface according to Example 1
7 is an illustration of an example of a grinding step of a concrete surface of a second embodiment of the present invention
8 is an exemplary view of a concrete surface according to Example 2. Fig.

(Example 1)

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described in detail with reference to the accompanying drawings,

Example 1 of the present invention is characterized by the steps of purifying the concrete surface to be reinforced, applying the lithium silicate enhancer, curing the reinforcing agent impregnated on the concrete surface, polishing the reinforced concrete surface and polishing the reinforced concrete surface .

1. Purification step of concrete surface to be reinforced

As shown in FIG. 1, the above-described purging of the concrete surface is a cleaning step of the surface of the concrete to be reinforced.

In the case of strengthening existing concrete floor, it is necessary to first repair the cracked part of the concrete floor, the damaged part first, and repair the newly laid concrete floor. Therefore, there is no need to repair the sludge, sand particles, cement dust, Remove dust, etc. using a vacuum cleaner.

Generally, the concrete 1 is composed of the composition of the silica sand 1a, the gravel 1b and the cement 1c, and cleans the surface 1s of the concrete 1 in a clean manner.

Oily materials and contaminants that can not be removed by vacuum cleaners are wiped off with a neutral detergent or an alkaline detergent with a brush, and then water is removed by a sprinkler to remove any foreign substances released on the concrete surface.

2. Application step of lithium silicate strengthening agent

In the applying step of the lithium silicate strengthening agent, water is first dewatered on the concrete floor cleaned and cleaned in the above-described purification step, so that the water is soaked. Allow to stand for about 20 to 30 minutes so that water is absorbed into the concrete after spraying.

As shown in Fig. 2, if no water is visible on the surface of the cleaned concrete, the surface 1s of the concrete 1 to be reinforced with the reinforcing agent 2 of the lithium silicate solution having a content of 20% to 25% Spraying the mixture to a uniform thickness,

The reinforcing agent is applied again at a time interval of about 10 to 15 minutes so that the reinforcing agent (2) sprayed after the first application is infiltrated into the concrete surface (1s). The reinforcing agent particles are nano- ), So that it penetrates easily through concrete pores.

In the case of concrete vertical surfaces, the reinforcing agent is applied at a coverage rate of 5 to 6 m ² / 1ℓ, and in the case of concrete flat, the reinforcing agent is applied at a coverage rate of 6 to 7 m ² / 1ℓ.

When the reinforcing agent is applied to the concrete plane, the application amount of the reinforcing agent is further increased because the penetration action is higher.

In the same manner as above, the reinforcing agent is repeatedly and uniformly applied over the second to third order so that the reinforcing agent of the thickness of 2 to 5 mm is finally left on the surface 1s of the concrete 1 when the penetration of the reinforcing agent is saturated.

3. Curing step of the reinforcing agent

As shown in FIG. 3, the strengthening step with the reinforcing agent is a stabilization step in which the hydration action of the lithium silicate, which is the reinforcing agent 2 penetrated into the concrete 1, and the calcium hydroxide present in the concrete proceeds and hardens.

Of course, since the lithium silicate is also a sticking material, the curing reaction proceeds due to its own hydration in the presence of water. Therefore, the reinforcing agent 2 applied to the surface 1s of the concrete 1 also proceeds to cure.

After applying the above-mentioned reinforcing agent, it is allowed to stand for about 24 hours in the season of May to October, leave it for about 48 hours in the other season, dry, and cure.

During curing, a vinyl sheet, sawdust, or the like is covered to prevent evaporation of water.

The silicate of the lithium silicate penetrated into the concrete pore is vitrified (glassy) of the calcium hydrate of the hydrated calcium-silicate formed by the hydration with the calcium hydroxide, And the concrete surface is strengthened.

Since hydration of the hydrate originally proceeds over a long period of time, in order to strengthen the concrete in a short period of time, the reinforcing agent is applied and after stabilizing for about one week, it enters the next step.

4. Polishing step of reinforced concrete surface

As shown in Fig. 4, the polishing step of the concrete surface is performed by immersing the surface 2s of the glass layer 2G coated with the reinforcing agent into the interior of the concrete 1, cured with the glass layer 2G, It polishes with smooth surface.

The reinforcing agent (2) of the radium silicate spread on the concrete surface to be reinforced is cured by the glass layer (2G), and the surface forms an uneven surface.

The surface 2s of the glass layer 2G is polished to a smooth surface by grinding with a grinding tool 3 rotating about 80 to 120 meshes. The polishing apparatus 3 usually uses a grinder. Polishing is performed while spraying water to prevent cracks on the surface of the glass layer by frictional heat.

The glass layer 2G formed by the reinforcing agent hardened at the surface of the concrete 1 appears as an off-white color by polishing. The original surface 1s of the concrete 1 is not seen due to the glass layer 2G of the reinforcing agent.

The glass layer 2G of the reinforced concrete surface forms a smooth surface in which the penetration of the material is blocked.

5. Polishing step of reinforced concrete surface

As shown in FIG. 5, the step of polishing the reinforced concrete surface is carried out after the glass layer 2G by the reinforcing agent already laminated on the surface of the concrete 1 is modified into a smooth surface and then the surface of the glossy glass layer 2G (2s). &Lt; / RTI >

The polishing is carried out mechanically by a fine grinding stone of 200 to 300 meshes, or by a grinding apparatus 3a which is rotatably mounted.

The surface 2s' of the polished glass layer 2G is finished with a glossy glass surface.

When the polishing step and polishing step are completed and the abrasive sludge remaining on the surface is washed with water, the surface becomes glossy as if the glazed tile is coated.

6 shows the primary polished surface 2s and the secondary polished surface 2s' of the glass layer 2G by the reinforcing agent laminated on the surface of the reinforced concrete 1 of the present invention.

According to the first embodiment of the present invention, since the reinforcing agent of the inorganic alkaline rhythm silicate is deeply penetrated into the concrete floor and the thicker penetration layer is immediately cured to the glass layer, the penetration of chemical substances, oily substances and water is completely blocked, And it can be used more safely and usefully.

(Example 2)

The second embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Fig. 7, a composition for forming the concrete 1 to be reinforced, for example, a part of a combination of sand (sand) 1a, gravel (crushed stone) 1b, cement 1c, A part of the surface 1s of the concrete 1 is ground to a smooth surface by using the mechanism 3b.

80 mesh curb is used for grinding, and water is applied to the grinding surface to prevent cracks in the concrete caused by friction heat during grinding. A part of the surface of sand 1b, sand 1b, and cement 1c is cut on the surface 1s of the ground concrete 1 to form a pattern similar to that of marble.

The remaining grinding sludge on the concrete surface is cleanly removed and washed with water.

The subsequent application of the lithium silicate reinforcement and the strengthening by the copper reinforcing agent and the polishing and polishing of the concrete surface were carried out in the same manner as in Example 1, except that the step of applying the lithium silicate reinforcement of Example 1, the strengthening step by means of a hardening agent, Quot; polish " of the < / RTI >

8 shows the polished surface 1s and the polished surface 1s of the reinforced concrete 1 of the present invention and shows the polished surface 1s' of the reinforced concrete 1 with the sandpaper 1a, gravel 1b, cement 1c) is a beautiful marble pattern that shows aesthetic feeling.

The concrete surface reinforced by Example 1 and the concrete surface reinforced by Example 2 differ only in appearance difference without marble pattern, and penetration of chemicals, harmful substances and water by the glass layer of the reinforcing agent The points to be intercepted are the same in both cases and therefore have no difference in utility.

1: Concrete 1a: Silica sand 1b: Gravel 1c: Cement 1s: Concrete surface
2: reinforcing agent 2G: glass layer 2s: glass layer surface 2s' glossy glass layer surface
3, 3a,: Polishing mechanism 3b: Grinding mechanism

Claims

A cleaning step of cleaning the concrete surface to be reinforced in order to strengthen the concrete surface; Applying a lithium silicate strengthening agent to apply moisture to the cleaned concrete surface and to impregnate the lithium silicate strengthening agent with concrete voids; A curing step of a curing agent which hardens (hardens) into a glassy layer while the reinforcing agent of lithium silicate penetrated into the concrete is glassy; A polishing step of a reinforced concrete surface; Polishing the reinforced concrete surface with a polished surface; Characterized in that it is reinforced with a glass surface of an off-white shine by means of lithium silicate.

The method according to claim 1,
Wherein the concrete reinforcing agent which is applied to the surface of the concrete through the concrete pores is a solution of lithium silicate in an amount of 20 to 25%.

The method of claim 1, wherein
Characterized in that the pattern of the concrete composition to be reinforced is polished to expose and then the rhizome silicate reinforcing agent is applied to the surface thereof to polish and polish the hardened concrete surface while being vitrified to enhance the appearance of the composition on the concrete surface. Strengthening method.

The method of claim 1, wherein
In the case of applying the reinforcing agent of the lithium silicate to the concrete surface, the reinforcing agent is applied at a coverage rate of 5 to 6 m ² / 1ℓ for the concrete vertical surface and the reinforcing agent is applied at the coverage rate of 6 to 7 m ² / 1ℓ for the concrete smoothing Lt; RTI ID = 0.0 > of < / RTI > lithium silicate.