KR102057419B1 - PAVING BLOCK HAVING A FUNCTION OF REDUCING NOx AND MANUFACTURING METHOD THEREOF - Google Patents

Abstract

The present invention relates to a fine dust reduction block for a sidewalk and a car road. The block includes: a base block; a thickening coating material coating the surface of the base block, and containing water (1), methylcellulose (2), at least one (3) among sodium carbonate (Na2CO3), sodium percarbonate (2Na2CO3·3H2O2) and quicklime (CaO), and hyaline (4); and a photocatalytic coating material coating the thickening coating material, and containing acicular nano titanium dioxide. The hyaline is made of at least one among glass powder and a hollow glass bubble micro sphere to have fine dust reduction and water permeation functions.

Description

PAXING BLOCK HAVING A FUNCTION OF REDUCING NOx AND MANUFACTURING METHOD THEREOF}

The present invention relates to a beam, a block for the roadway and a manufacturing method thereof, and more particularly, to a beam, a roadway block having a high permeability coefficient function, and a method for manufacturing the same to reduce fine dust in the city.

Recently, a sustainable and eco-friendly natural purification technology is required as a concept of air purification that is aware of the air problem all over the world. Air pollution due to the emission of various harmful substances due to the development of the industry, and especially nitrogen compounds generated from automobile smoke in urban areas accumulate on the roads and roads, which is damaging the air environment and health with fine dust and smog.

On the other hand, the physical cleaning method such as water cleaning is used in the washing method of beams and driveway blocks constructed in the city center of Korea, and the natural purification technology is not sufficiently applied. In particular, recently, some products using photocatalysts such as Korean Patent No. 10-1092568 (2011.12.05.) Have been used. However, due to the technical limitations of the purification of insignificant nitrogen compounds due to the low specific surface area, it is difficult to apply continuous natural purification technology. .

Therefore, the oxidation and antifouling technology by high specific surface area is applied to beams and driveway blocks used in the city, providing the effect of reducing surface clogging caused by dust, and purifying air by decomposing and removing nitrogen compounds, and high permeability. There is a need for technology that can help to reduce urban fine dust.

The present invention has been made in view of the above, it provides a low-industrial fine dust reduction beam, driveway block and a manufacturing method thereof having a continuous NOx removal and high permeability coefficient function.

It is a second object of the present invention to provide a fine dust reduction beam, a driveway block, and a manufacturing method thereof having high NOx removal efficiency even at night or on a cloudy day.

A third object of the present invention is to provide a fine dust reduction beam, a driveway block, and a manufacturing method thereof having a photocatalyst having a structure capable of irradiating light to the photocatalyst in all directions.

The fine dust reduction beam, the drive block provided in the present invention, the base block; Coated on the surface of the base block, in (1) water, (2) methylcellulose, (3) sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), quicklime (CaO) Thickening coatings containing at least one and (4) glassy; And a photocatalyst coating material coated on the thickening coating material and containing acicular nano titanium dioxide.

The glassy material is formed of at least one of glass powder and hollow glass bubble micro spheres.

The base block is formed by adding an aqueous solution to the base material, the base material is formed by mixing at least one of stone powder and silica, and at least one of OPC (Ordinary Portland Cement) and the back cement, the aqueous solution is water and polycarboxylic acid (Polycarbcxyl acid), and the thickening coating material is formed by adding the glass to the thickening liquid, the thickening liquid is sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ ·) in water and methyl cellulose At least one of 3H ₂ O ₂ ) and quicklime (CaO).

The base material is 75 to 85wt% of stone powder or silica sand, and 15 to 25wt% of OPC or back cement, the aqueous solution is used 10 to 20wt% based on the weight of the base material, the aqueous solution is based on the weight of the aqueous solution 90 to 95 wt% of water and 5 to 10 wt% of polycarboxylic acid, and the thickening coating material is 0.01 to 0.2 wt% based on the weight of the base material, and the thickening liquid is based on the weight of the thickening liquid. Add 0.01 to 0.1 wt% of at least one of sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), and quicklime (CaO) to 96.9 to 98.99 wt% of water and 1 to 3 wt% of methyl cellulose. The glass material is formed of at least one of 1 to 20 wt% glass powder and 0.1 to 2 wt% glass bubble microspheres based on the weight of the thickener.

The photocatalyst coating material is used 0.01 ~ 0.2wt% based on the weight of the base material.

The particle size of the stone powder is 13 mm or less.

The particle size of the silica sand is 1.5 ~ 4mm.

The OPC or back cement has a specific surface area of 4,000 to 5,000 cm 2 / g.

The particle size of the glass powder is 200 mesh or more.

The viscosity of the thickening coating material is 2,000 mPa · s or more.

The photocatalyst coating material has a NOx removal function characterized by a needle shape (chestnut shape) of 20 nm or more.

The method for manufacturing fine dust reduction beams and driveway blocks provided by the present invention includes providing a base material formed by mixing at least one of an Ordinary Portland Cement (OPC) and a back cement in at least one of stone powder and silica sand; Adding and stirring an aqueous solution formed of water and polycarboxylic acid to the base material; Injecting the material stirred in the stirring step into a mold and molding the molded material; Curing the molded base block in the forming step; And spraying a thickening coating material and a photocatalyst coating material on the surface of the base block cured in the curing step, wherein the thickening coating material is (1) water, (2) methylcellulose, and (3) sodium carbonate (Na ₂ CO _3). ), At least one of sodium percarbonate (2Na ₂ CO ₃ .3H ₂ O ₂ ), quicklime (CaO), (4) glassy, and the photocatalyst coating material contains acicular nano titanium dioxide.

In the method of manufacturing the beam and driveway block, the glass is formed of at least one of glass powder and hollow glass bubble micro spheres.

In the method of manufacturing the beam and driveway block, the base block is formed by adding an aqueous solution to the base material, and the base material is mixed with at least one of stone powder and silica sand, and at least one of OPC (Ordinary Portland Cement) and back cement. It is formed, the aqueous solution is made of at least one of water and polycarboxylic acid (Polycarbcxyl acid), the thickening coating is formed by adding the glassy to the thickening liquid, the thickening liquid in water and methyl cellulose sodium carbonate (Na ₂ CO ₃ ), Sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), quicklime (CaO) is added to the composition.

In the method of manufacturing the beam block for the driveway, the base material is made of 75 to 85 wt% of stone powder or silica sand, and 15 to 25 wt% of OPC or back cement, and the aqueous solution is used in an amount of 10 to 20 wt% based on the weight of the base material. , The aqueous solution consists of 90 ~ 95wt% water and 5 ~ 10wt% polycarboxylic acid based on the weight of the aqueous solution, the thickening coating material is used 0.01 ~ 0.2wt% based on the weight of the base material, The mucus is sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), quicklime (CaO) in 96.9 ~ 98.99wt% water and 1-3wt% methylcellulose based on the weight of the thickener It is formed by adding at least one of 0.01 ~ 0.1wt%, the glass is made of at least one of 1 ~ 20wt% glass powder and 0.1 ~ 2wt% glass bubble microspheres based on the weight of the thickener, the photocatalyst Coating material is based on the weight of the base material Is 0.01 ~ 0.2wt% is used as a.

In the stirring step, the material to be stirred is stirred by at least one of a cylindrical rotary stirring method and an impeller corotating rotary stirring method.

The method of supplying the aqueous solution to the base material is made by at least one of a shower supply method and a mist spray method.

In the forming step, it is molded by at least one of a dry hydraulic vibration method, a tilting vibration rotation method, a wet mold method.

In the curing step is cured by at least one of a dry drying method, a wet drying method, a natural drying method by a heat source.

In the spraying step, the liquid thickening coating material and the liquid photocatalyst coating material are sprayed onto a surface of the cured base block with a nozzle and a spray gun.

The present invention is coated with a glass powder and / or glass bubble microsphere thickening coating and needle-shaped (chestnut) nano titanium dioxide photocatalyst coating on the surface of the block, the urban fine dust reduction beam, driveway block and its block having a continuous NOx removal function Implement the manufacturing method.

In particular, the thickening coating material has a high thickening function to increase the adhesion function of the needle-shaped nano-titanium dioxide photocatalyst coating material, thereby maintaining the durability by reducing the loss of the photocatalyst.

In addition, glass powder or glass bubble microspheres, which are thick coating materials, improve the NOx removal efficiency of photocatalysts with high reflectance against sunlight. Glassbubble microspheres, in particular, exhibit very high reflectances of over 80% for sunlight.

In addition, the present invention implements a method for producing a beam, driveway block excellent in fine dust reduction and water permeability by the mixing ratio of the additives added to the base material.

1 is a conceptual diagram showing the configuration of fine dust reduction beams, road block material according to an embodiment of the present invention.
2 is a flowchart illustrating a method of manufacturing fine dust reduction, beam, and roadway blocks according to an embodiment of the present invention.
3 is a conceptual diagram of a fine dust reduction beam, a road block according to an embodiment of the present invention.
4 to 5 is a real picture of the fine dust reduction and beam, OPC applied permeable block according to an embodiment of the present invention.
6 is a real picture of the fine dust reduction and beam, road back cement beam, road impermeable block according to an embodiment of the present invention.
7 is a mass production physical picture of the fine dust reduction and beam, driveway block according to an embodiment of the present invention.
8 is a real photograph of a permeation experiment using the samples prepared in Examples 2 to 4.
9 is a nanophotocatalyst SEM photograph.
10 is a schematic diagram according to a polycarboxylic acid reaction.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated and described in detail.

However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention.

Singular expressions include plural expressions unless the context clearly indicates otherwise. The terms "comprises" or "having" in the present application are intended to indicate that there is a feature, number, component, or combination thereof described in the specification, and that one or more other features or numbers, components, or It should be understood that it does not exclude in advance the possibility of the presence or addition of combinations.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed in accordance with their meaning in the context of the related art, and shall not be construed in an ideal or excessively formal sense unless clearly defined herein.

Hereinafter, an embodiment of the present invention will be described.

1 is a conceptual diagram showing the configuration of fine dust reduction beams, road block material according to an embodiment of the present invention. In connection with the present invention, the material of the fine dust reduction beam and the driveway block is formed by adding an additive such as an aqueous solution, a thickening coating material, and a photocatalyst coating material to the base material.

The base material includes at least one of stone powder and silica, and also includes at least one of an Ordinary Portland Cement (OPC) and a back cement.

As such an example, the base material may be composed of OPC (Ordinary Portland Cement) or back cement of 15 to 25wt% to 75 to 85wt% of stone powder or silica sand.

Stone powder, which is the material, is a by-product generated during stone processing, and is widely used as a strength reinforcing material, and can be expected to reduce cost. The particle size of the stone powder is preferably 13 mm or less.

When stone powder is used without silica sand in the base material, the stone powder is preferably used at a ratio of 80 to 90 wt% based on 100 wt% of the base material. Rainwater permeability is lowered when using less than 80wt% of stone powder, and durability and bending strength are lowered when using more than 90wt%.

The raw material, silica, is used as glass raw materials, foundry sand (및 物 沙) and other industrial raw materials. Silica sand is sand that is formed by the weathering of rocks and other minerals are broken down and only quartz remains or is transported. Natural silica refers to Sangyusa, Cheongyusa, and Habingyusa, depending on the place where it is produced. It is a uniform aggregate with a particle size of 8 to 40 mesh and has high strength. have. It is preferable that the particle size of a silica sand is 1.5-4 mm also in the said range.

When silica sand is used in the base material without stone powder, the silica sand is preferably used at a ratio of 75 to 85 wt% based on 100 wt% of the base material. When the silica sand is used below 75wt%, the surface friction strength is lowered, and when the silica sand is used above 85wt%, durability and bending strength are lowered.

로 소성하면 클링커가 얻어지는데, 여기서 응결 조절제로서 약간의 석고를 투입하고, 비표면적 4,000~5,000cm²/g으로 미분쇄하면 OPC 또는 백시멘트가 만들어진다. OPC 또는 백시멘트는 수화반응을 일으키는 특성을 갖고 있다.OPC or back cement, which is a material of the base material, is a material mainly obtained from calcareous raw materials and clay raw materials. In order to obtain OPC or white cement, siliceous and iron oxide raw materials are added to the calcareous raw material and the clay raw material, and mixed and pulverized in an appropriate ratio. And about 1,450 until some of it melts.

Firing with gives a clinker, in which some gypsum is added as a coagulation control agent, and fine grinding to a specific surface area of 4,000 to 5,000 cm² / g produces OPC or back cement. OPC or back cement has the property of causing a hydration reaction.

Based on 100 wt% of the base material, the OPC and / or back cement is preferably used at a ratio of 15 to 25 wt%. When less than 15wt%, the hydration reaction is dropped, so the physical properties are significantly lowered. When it is more than 25wt%, the workability is decreased by the rapid hydration reaction, and the cost increases.

Hereinafter, each composition of the additive added to the base material will be described in more detail. The range of content of each composition described below may be an optimum range for maximizing the synergistic effect obtained by mixing each effect and other composition obtained when using each composition.

The aqueous solution is formed of at least one of water and polycarboxylic acid (Polycarbcxyl acid).

The water uses clean water that is not contaminated, such as running water or groundwater.

는 Polycarboxylic Acid 와 반응해서

염이 발생하는데, Polycarboxylate 의 Backbone에 붙은 Carboxyl 그룹이 (-) charge를 띄어 시멘트에 포함된

와 같은 (+) charge의 입자들과 전기적인 인력에 의해 결합된다. 시멘트 입자에 붙은 가지 형태의 Carboxyl 기는 시멘트 입자간의 전기적 반발과 입체장애 효과에 의해 반발력을 유도하고, 이를 통해 적은 물의 양으로 시멘트의 유동성을 확보할 수 있고, 이에 따른 시멘트의 강도에도 효과를 증진하는 물질이다.Polycarboxylic acids provide carboxyl groups that are branched to the cement particles. Occurred during the hydration of cement

Reacts with Polycarboxylic Acid

Salt occurs, and the carboxyl group attached to the backbone of polycarboxylate has a negative charge,

It is coupled by electrical attraction with particles of positive charge such as Branched carboxyl group attached to cement particles induces repulsive force due to electrical repulsion and steric hindrance effect between cement particles, thereby securing the fluidity of cement with a small amount of water, thereby improving the strength of cement. It is a substance.

When water and polycarboxylic acid are used together, it is preferable that an aqueous solution formed at a ratio of 5 to 10 wt% of polycarboxylic acid to 90 to 95 wt% of water is used at a moisture content of 10 to 20 wt%. Herein, the water content of 10 to 20 wt% refers to the weight ratio of the aqueous solution based on the weight of the base material. If the moisture content is less than 10wt%, there is a problem of shattering after molding due to lack of moisture content.

The thickening coating material (or thickening coating solution) is formed by adding at least one of methyl cellulose, sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), and quicklime (CaO) to the glass. Here, glassy refers to either glass powder or hollow glass bubble microspheres.

The thick coating material is a methyl cellulose, the main component is a water-soluble substance by ether reaction to insoluble cellulose, and together with water, sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), quicklime (CaO ), Glass powder, or glass bubble microspheres are added to form thickening coatings. Since the thickening coating material has a high viscosity of 2,000 mPa · s or more, a photocatalyst coating material containing acicular type (chestnut) nano titanium dioxide which will perform the thickening function and penetrate the surface of the base block and will be described later. To increase the adhesion and penetration of the nano-titanium dioxide photocatalyst coating material. As a result, the loss of the photocatalyst is maintained to maintain the persistence. In particular, glass powder and glass bubble microspheres improve the NOx removal efficiency of the nano titanium dioxide photocatalyst with high reflectance of sunlight.

The sodium carbonate (Na ₂ CO ₃ ) is a white powder that does not contain water and has a property of absorbing moisture. It is soluble in water and its aqueous solution is basic and is used in various production processes such as soap, glass, pottery, acid neutralization, and hard water.

The sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ) is a hygroscopic colorless crystal and is a water soluble solid. Sodium percarbonate is a substance used in many production processes, such as eco-friendly laundry products, acid neutralization, and hard water.

The quicklime (CaO) is used in a wide variety of applications, such as acid soil improver, civil construction materials such as lime plaster mix cement, gas collectors, etc., sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), quicklime (CaO) is a substance that reacts with methyl cellulose to improve adhesion and durability by forming a flexible film and high viscosity.

The glass powder is made of SiO ₂ as a main component, and the recycled glass has a particle size of 200 mesh or more, and has the effect of reflecting sunlight, water resistance, and pollution resistance.

The glass bubble microsphere is a bead-like shape having a diameter of micrometers, the bead is a typical feature is hollow form. That is, the glass bubble microsphere may be a hollow glass microsphere having a spherical body and a hollow portion in which the inside of the body is empty. The glass bubble microsphere is a glass material based on high strength, high density and based on sodium carbonate (Na ₂ CO ₃ ), and has excellent water resistance and pollution resistance, in particular, solar reflection of more than 80%.

The glass material maximizes the efficiency of the photocatalyst even on a cloudy day with little sun light. Specifically, the glass material supplies the reflected light to the photocatalyst, so that even if the amount of light directly incident on the photocatalyst is small, a certain amount of light or more may be incident on the photocatalyst.

In addition, the glass material allows the light to reach the photocatalyst penetrated deeply into the base block, so that the photocatalyst can maintain the catalyst function more than a certain level regardless of the fixed position of the photocatalyst. In detail, the glass material penetrates deeply into the base block together with the optical storage to supply the reflected light to the photocatalyst. In this way, the glassy material can perform the function of the photocatalyst even if the photocatalyst is fixed at a position that cannot absorb sunlight.

In particular, a glass bubble microsphere having a very high reflectance to sunlight may maximize the glass effect described above.

The glass powder or glass bubble microsphere thickening liquid mixed and prepared with the above material has excellent flowability along with acicular (chestnut-type) nano titanium dioxide photocatalyst coating liquid to penetrate the surface of the base block to form a film and to maintain semi-permanent persistence. Has characteristics. The surface coating liquid strongly fixes the photocatalyst particles on the surface of the base block, so that the beam and drive block according to the present invention can perform the photocatalytic function semi-permanently.

As an example of the thickening coating material included in the beam block material for the driveway, 0.01 to 0.1 wt% of sodium carbonate (Na ₂ CO ₃ ) in 96.9 to 98.99 wt% of water and 1 to 3 wt% of methyl cellulose, and sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ) 0.01 ~ 0.3wt%, 0.01 ~ 0.1wt% of quicklime (CaO) is added to form a thickening liquid, 1 ~ 20wt% glass powder, glass bubble based on 100wt% thickening solution Addition of 0.1-2 wt% of microspheres can form a thick coating material (thickening coating solution).

The thickening coating material is preferably used 0.01wt% ~ 0.2wt% based on the weight of the base material. This results in lower adhesion and NOx removal efficiency when used below 0.01wt%, and lowered water permeability due to surface clogging when used above 0.2wt%, resulting in cost increase.

The needle-shaped (chestnut-type) nano titanium dioxide photocatalyst coating material (or photocatalyst coating solution) is a titanium dioxide (TiO ₂ ) whose main component is oxidation, decomposition and removal of nitrogen compounds by infrared rays, ultraviolet rays and visible rays emitted from sunlight, and a permanent property. Have Needle-shaped nano-titanium dioxide photocatalyst is composed of 200 nanometer (nm) chestnut-shaped particulates to store solar energy, so it has high efficiency in removing visible light at night and cloudy days, especially at night, and at night. It has the characteristics of pollutant antifouling function and hydrophilicity. In particular, the needle type having a size of 20 nm or more provides a high specific surface area to maximize the photocatalytic function.

Based on the weight of the base material, the needle-shaped (chestnut) nano titanium dioxide photocatalyst coating liquid is preferably used in a ratio of 0.01wt% to 0.2wt%. It is less than 0.01wt%, the permeability coefficient is lowered due to the reduction of NOx removal function and antifouling function, there is a problem of cost increase as an expensive material when used over 0.2wt%.

Hereinafter, the urban fine dust reduction beam having a NOx removal function completed using the above materials, a driveway block, and a method of manufacturing the same will be described in more detail with reference to FIG. 2.

Figure 2 is a flow chart illustrating a method for manufacturing a fine dust reduction beam, a driveway block having a NOx removal function according to an embodiment of the present invention. 4 to 6 are coated with glass powder or glass bubble microsphere thickening liquid and acicular (chestnut) nano titanium dioxide photocatalyst coating liquid on the surface of the block according to the present invention, the city fine dust reduction beam having a NOx removal function, car Physical pictures showing examples of theft block products. 7 is coated with a glass powder or glass bubble microsphere thickening liquid and needle-shaped (chestnut) nano titanium dioxide photocatalyst coating liquid on the surface of the block according to the present invention to produce a city fine dust reduction beam, driveway block with NOx removal function It is a real photograph showing an Example. 8 is a water permeation experiment using a sample, Figures 9 to 10 are schematic diagrams according to the nano-photocatalyst fine particle SEM photograph and the polycarboxylic acid reaction.

Referring to Figure 2, first, a base material is provided (S201). For example, the base material may be formed by mixing 80 to 90 wt% of stone powder and / or silica sand with 10 to 20 wt% of Ordinary Portland Cement (OPC) and / or back cement.

Next, at least one of water and polycarboxylic acid is added to the base material as an additive to the base material, and put into a stirrer (Mixer) to stir (S202). Adding an aqueous solution formed of water and / or polycarboxylic acid to the base material may be added by a shower supply method or a mist spray method. Stirring may be performed by at least one of a cylindrical rotary stirring method and an impeller corotating rotary stirring method.

Next, the stirred material is molded and cured (S203). Molding may be carried out by at least one method of a dry hydraulic vibration method, a tilting method, a wet molding method. Curing may be performed by at least one of a dry drying method, a wet drying method, and a natural drying method by a heat source.

Next, glass powder and / or glass bubble microsphere thickening coating liquid is sprayed on the surface of the cured base block (S204).

Finally, the needle-shaped (chestnut) nano titanium dioxide photocatalyst coating liquid is sprayed on the surface of the cured base block to complete the product (S205).

Spraying of the glass powder and / or glass bubble microsphere thickening coating liquid, needle-shaped (chestnut) nano titanium dioxide photocatalyst coating liquid spraying may be performed by at least one method of a nozzle spray method or a spray gun method.

4 to 7 show the actual products of the fine dust reduction beam, driveway permeation block, impermeable block and the beam, driveway block mass production product manufactured by the above method. 4 to 5 is a fine dust reduction beam, driveway permeable block, Figure 6 is an impermeable block, Figure 7 shows a mass production picture.

Fine dust reduction beams and driveway blocks produced by the above method can be preferably used as fine dust reduction beams and driveway blocks beyond the national regulations such as high NOx natural semi-permanent purification and removal effect and permeability coefficient, bending strength.

The following describes an embodiment of the fine dust reduction beam and the driveway block manufactured by the above method. By the composition and manufacturing method of each material described above, the fine dust reduction beam, the block for the roadway may be composed of the following components.

As a material of the fine dust reduction beam and the driveway block according to one embodiment of the present invention, a base material of 75 to 85 wt% of stone powder or silica sand and 15 to 25 wt% of OPC may be used based on 100 wt% of the base material. An aqueous solution formed of 90 to 95% water and 5 to 10 wt% of polycarboxylic acid based on 100 wt% of the aqueous solution may be used in an amount of 10 to 20 wt% based on the weight of the base material. In addition, in the thickening liquid formed from 96.9 to 98.99wt% of water and 0.01 to 0.1wt% of sodium carbonate (Na ₂ CO ₃ ) in 1 to 3wt% of methyl cellulose, 0.1 to 20wt% of glass powder and glass bubble micro based on 100wt% of the thickening solution. A thick coating solution added with 0.1 ~ 2wt% spear may be used 0.01wt% ~ 0.2wt% based on the weight of the base material. Needle-shaped (chestnut-type) nano titanium dioxide photocatalyst coating liquid may include 0.01 wt% to 0.2 wt% based on the weight of the base material.

More specifically, the first coating layer (C1) by the thickening coating solution is formed on the upper side of the base block (B) of the beam, the drive block 100 formed by the base material and the aqueous solution. The glassy material may be mixed with the thickening material in the first coating layer C1. That is, the first coating layer C1 may be a layer on which glass is disposed. In addition, a second coating layer C2 by the photocatalyst coating liquid may be formed on an upper surface of the first coating layer C1. Needle-shaped (chestnut) nano titanium dioxide photocatalyst may be disposed on the second coating layer C2. According to such a double layer structure (C1 & C2), when the sunlight (S) is incident on the beam, driveway block 100 of the light (R) is reflected from the lower layer (C1) entering the photocatalyst layer (C2). The amount is increased, and further, the photocatalyst can be suppressed from dropping by the strength reinforcement of the first coating layer C1 (see FIG. 3).

The material consisting of the above components can be used for the use of fine dust reduction beams, driveway block products.

As another example, as the material of the fine dust reduction beam and the driveway block, a base material of 75 to 85 wt% of stone powder or silica sand and 15 to 25 wt% of OPC may be used based on 100 wt% of the base agent. An aqueous solution formed of 90 to 95% water and 5 to 10 wt% of polycarboxylic acid based on 100 wt% of the aqueous solution may be used in an amount of 10 to 20 wt% based on the weight of the base material. In addition, 96.9 ~ 98.99wt% of water, 1 ~ 3wt% of methyl cellulose in the thickening solution formed from 0.01 ~ 0.1wt% of sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ) glass powder 1 based on 100wt% of the thickening solution A thick coating solution added with 20 wt% and glass bubble microspheres of 0.1 to 2 wt% may be used in an amount of 0.01 wt% to 0.2 wt% based on the weight of the base material. Needle-shaped (chestnut-type) nano titanium dioxide photocatalyst coating liquid may include 0.01 wt% to 0.2 wt% based on the weight of the base material.

The material consisting of the above components can be used for the use of fine dust reduction beams, driveway block products.

As another example, as the material of the fine dust reduction beams and the road-permeable block, a base material of 75 to 85 wt% of stone powder or silica sand and 15 to 25 wt% of OPC may be used based on 100 wt% of the base material. An aqueous solution formed of 90 to 95% water and 5 to 10 wt% of polycarboxylic acid based on 100 wt% of the aqueous solution may be used in an amount of 10 to 20 wt% based on the weight of the base material. In addition, in the thickening solution formed from 96.9 to 98.99wt% of water and 0.01 to 0.1wt% of quicklime (CaO) in methyl cellulose 1 to 3wt%, based on the 100wt% of the thickening solution, glass bubble microsphere 0.1 A thick coating solution added with 2 wt% may be used in an amount of 0.01 wt% to 0.2 wt% based on the weight of the base material. Needle-shaped (chestnut-type) nano titanium dioxide photocatalyst coating liquid may include 0.01 wt% to 0.2 wt% based on the weight of the base material.

The material consisting of the above components can be used for the use of fine dust reduction beams, driveway block products.

As another example, as the material of the fine dust reduction beam and the driveway block, a base material of 75 to 85 wt% of stone powder or silica sand and 15 to 25 wt% of back cement may be used based on 100 wt% of the base material. An aqueous solution formed of 90 to 95% water and 5 to 10 wt% of polycarboxylic acid based on 100 wt% of the aqueous solution may be used in an amount of 10 to 20 wt% based on the weight of the base material. In addition, in the thickening liquid formed from 96.9 to 98.99wt% of water and 0.01 to 0.1wt% of sodium carbonate (Na ₂ CO ₃ ) in 1 to 3wt% of methyl cellulose, 1 to 20wt% of glass powder and glass bubble based on the 100wt% of the thickening solution. A thick coating solution added with 0.1 ~ 2wt% of microspheres may be used in an amount of 0.01wt% ~ 0.2wt% based on the weight of the base material. Needle-shaped (chestnut-type) nano titanium dioxide photocatalyst coating liquid may include 0.01 wt% to 0.2 wt% based on the weight of the base material.

The material consisting of the above components can be used for the use of fine dust reduction beams, driveway block products.

As another example, as the material of the fine dust reduction beam and the driveway block, a base material of 75 to 85 wt% of stone powder or silica sand and 15 to 25 wt% of back cement may be used based on 100 wt% of the base material. An aqueous solution formed of 90 to 95% water and 5 to 10 wt% of polycarboxylic acid based on 100 wt% of the aqueous solution may be used in an amount of 10 to 20 wt% based on the weight of the base material. In addition, 96.9 ~ 98.99wt% of water, 1 ~ 3wt% of methyl cellulose in the thickening solution formed from 0.01 ~ 0.1wt% of sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ) glass powder 1 based on 100wt% of the thickening solution A thick coating solution added with 20 wt% and glass bubble microspheres of 0.1 to 2 wt% may be used in an amount of 0.01 wt% to 0.2 wt% based on the weight of the base material. Needle-shaped (chestnut-type) nano titanium dioxide photocatalyst coating liquid may include 0.01 wt% to 0.2 wt% based on the weight of the base material.

The material consisting of the above components can be used for the use of fine dust reduction beams, driveway block products.

As another example, as the material of the fine dust reduction beams and the road-permeable block, a base material of 80 to 90 wt% of stone powder or silica sand and 10 to 20 wt% of back cement may be used based on 100 wt% of the base material. An aqueous solution formed of 90 to 95% water and 5 to 10 wt% of polycarboxylic acid based on 100 wt% of the aqueous solution may be used in an amount of 10 to 20 wt% based on the weight of the base material. In addition, in the thickening liquid formed from 96.9 to 98.99wt% of water and 0.01 to 0.1wt% of quicklime (CaO) in methyl cellulose 1 to 3wt%, the glass powder 5 to 20wt%, glass bubble microsphere 0.5 based on 100wt% of the thickening solution. A thick coating solution added with 2 wt% may be used in an amount of 0.01 wt% to 0.2 wt% based on the weight of the base material. Needle-shaped (chestnut-type) nano titanium dioxide photocatalyst coating liquid may include 0.01 wt% to 0.2 wt% based on the weight of the base material.

The material consisting of the above components can be used for the use of fine dust reduction beams, driveway block products.

An aqueous solution formed of 95% water and 5 wt% of polycarboxylic acid in a base material consisting of 80 wt% of granules having a particle size of 13 mm or less and 0 wt% of OPC having a specific surface area of 4,000 to 5,000 cm 2 / g, 15 wt% of the total weight of the base material It was supplied by the shower supply method as much as stirring and mixing by the impeller (rotator) revolving rotation method. The stirred material was put into a mold (mold) having a size of 2,000x2,000x60mm and molded and cured by dry hydraulic vibration molding method and natural drying method. And the thickening liquid formed of 0.05wt% sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ) in 98.95wt% water, 1wt% methyl cellulose and 0.03wt% of acicular (chestnut) nano titanium dioxide photocatalyst coating solution was formed and By spraying the cured material by the nozzle method sequentially, a fine dust reduction beam and a permeation block for a roadway were manufactured. (See FIG. 4) In Example 1, the glassy material was needle-shaped (chestnut-type) in a thickening solution not mixed. The nano titanium dioxide photocatalyst coating solution was mixed to prepare a fine dust reduction beam and a permeable block for driveway first.

An aqueous solution formed of 95% water and 5 wt% of polycarboxylic acid in a base material composed of 80 wt% of granules having a particle size of 13 mm or less and 20 wt% of OPC having a specific surface area of 4,000 to 5,000 cm² / g was 15 wt% based on the total weight of the base material. It was supplied by the shower supply method as much as stirring and mixing by the impeller (rotator) revolving rotation method. The stirred material was put into a mold (mold) having a size of 2,000x2,000x60mm and molded and cured by dry hydraulic vibration molding method and natural drying method. Thickener with glassbubble microspheres 1wt% (based on the total weight of the thickener) was added to a thickener formed of 0.05wt% of sodium percarbonate (2Na ₂ CO ₃ .3H ₂ O ₂ ) in 98.95 wt% of water and 1 wt% of methyl cellulose. 0.1 wt% of the coating liquid (based on the total weight of the base material) and 0.03wt% of the acicular (chestnut) nano titanium dioxide photocatalyst coating liquid (based on the total weight of the base material) were sequentially formed by the method of a nozzle to the molded and cured material. By spraying to produce a fine dust reduction beam, driveway block for the roadway (see Fig. 5).

80 wt% of silica sand having a particle size of 4 mm or less, 20 wt% of a back cement having a specific surface area of 4,000 to 5,000 cm² / g, and an aqueous solution formed of 95% of water and 5 wt% of polycarboxylic acid in a base material, 15 wt% based on the total weight of the base material. It was fed by the mist supply method as much as stirring and mixing by the impeller (rotator) revolving rotation method. The stirred material was put into a mold (mold) having a size of 2,000x2,000x60mm and molded and cured by dry hydraulic vibration molding method and natural drying method. And 0.1 wt %% of the thick coating solution to which 1wt% of the glass powder having a particle size of 325mesh (based on the total weight of the thickening solution) was added to the thickening solution formed of 98.45wt% of water and 1.5wt% of methylcellulose in the quicklime of 0.05wt% of quicklime. Fine dust reduction by spraying the needle-shaped (chestnut) nano titanium dioxide photocatalyst coating solution (based on the total weight of the base material) to the molded and cured materials sequentially by spray gun method. , An impervious block for roadways was produced. (See FIG. 6)

Samples of fine dust reduction beams and driveway permeable blocks prepared by the method of Example 1 were taken as 200 x 200 x 60 mm, and their flexural strengths and permeability coefficients are shown in Table 1 and Table 2, and the comparative examples were KS standards. The test items of KS F 4419: 2009 are the standard values conducted by the Korea Institute of Construction and Environmental Testing, and the results of the NOx removal efficiency tests conducted by the Korea Testing and Research Institute are shown in Table 3.

Test Items unit Test Methods KS Standard Test result Flexural strength (6T) Mpa KS F 4419: 2009 4 or more 4.5

Test Items unit KS standard Test Methods Test result Permeability coefficient mm / s 0.1 or more KS F 4419: 2009 0.18

Test Items unit Sample classification Result Deodorization Test: Nitrogen Dioxide ppm n1 6 (50) Deodorization Test: Nitrogen Dioxide ppm n2 6 (50) Deodorization Test: Nitrogen Dioxide ppm n3 5 (50)

Sample Name: Fine Dust Reduction Block (Photocatalyst Sample)

Table 4 below shows the test results carried out by the Korea Institute of Construction and Environmental Testing, and the results of the viscosity used as the thick coat as described above.

Test Items unit Test Methods Test result Viscosity mPas KS M 3705: 2015 5,035

According to the test results, it can be seen that the fine dust reduction beams and the permeable block samples prepared by the method of Example 1 showed excellent results in the bending strength KS standard, permeability coefficient, and NOx removal efficiency.

In addition, glass powder or glass bubble microspheres, which are thick coating materials, reflect sunlight from the bottom of the photocatalyst to improve NOx removal efficiency.

Tests on the NOx removal efficiency of the samples of fine dust reduction beams and driveway permeation blocks manufactured by the method of Example 2 and Example 3 are in progress. According to the structures of Examples 2 and 2, since the glass coating is provided on the first coating layer, and the light is irradiated to the photocatalyst of the second coating layer, the light is emitted even under the photocatalyst, thereby reducing NOx removal. The efficiency can be higher. Furthermore, glass bubble microspheres exhibit a very high reflectivity of 80% or more with respect to sunlight, and are of high density, so that the strength reinforcement and the NOx removal efficiency can be further improved. Therefore, the beam and driveway block of the present invention can be utilized as a fine dust reduction block.

Although the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those skilled in the art will have the idea of the present invention described in the claims to be described below. It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

Claims (10)

Base block;
Coated on the surface of the base block, in (1) water, (2) methylcellulose, (3) sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), quicklime (CaO) Thickening coatings containing at least one and (4) glassy; And
It is coated on the thickening coating material, and includes a photocatalyst coating material containing acicular nano titanium dioxide,
The base block is formed by adding an aqueous solution to the base material,
The base material is made of stone powder or silica sand 75 ~ 85wt%, OPC (Ordinary Portland Cement) or back cement 15-25wt%,
The aqueous solution is used 10 ~ 20wt% based on the weight of the base material,
The aqueous solution is composed of 90 ~ 95wt% of water and 5 ~ 10wt% of polycarboxylic acid (Polycarbcxyl acid) based on the weight of the aqueous solution,
The thick coating material is used 0.01 ~ 0.2wt% based on the weight of the base material,
The thickening coating material is formed by adding the glassy to the thickening liquid,
The thickener is based on the weight of the thickener in water 96.9 ~ 98.99wt% and methyl cellulose 1 ~ 3wt% sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), quicklime ( Formed by adding at least one of CaO) 0.01 ~ 0.1wt%,
The glassy material is composed of at least one of 1 to 20 wt% glass powder and 0.1 to 2 wt% hollow glass bubble micro sphere based on the weight of the thickener,
The photocatalyst coating material is fine dust reduction beam, driveway block with NOx removal function, characterized in that 0.01 ~ 0.2wt% is used based on the weight of the base material. delete delete The method of claim 1,
The particle size of the stone powder is 13 mm or less,
The particle size of the silica sand is 1.5-4mm,
The OPC or back cement has a specific surface area of 4,000 ~ 5,000cm² / g fine dust reduction beam, driveway block having a NOx removal function, characterized in that. delete delete delete Providing a base material formed by mixing at least one of an Ordinary Portland Cement (OPC) and a back cement in at least one of stone powder and silica;
Adding and stirring an aqueous solution formed of water and polycarboxylic acid to the base material;
Injecting the material stirred in the stirring step into a mold and molding the molded material;
Curing the molded base block in the forming step; And
Spraying a thickening coating material and a photocatalyst coating material on the surface of the base block being cured in the curing step,
The thickening coating material is at least one of (1) water, (2) methyl cellulose, (3) sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), quicklime (CaO), (4 ) Contains glass,
The photocatalyst coating material contains acicular nano titanium dioxide,
The glass material is a method for producing a fine dust reduction beam, driveway block having a NOx removal function, characterized in that formed of at least one of glass powder and hollow glass bubble micro sphere (glass bubble micro sphere). The method of claim 8,
The base block is formed by adding an aqueous solution to the base material,
The base material is formed by mixing at least one of stone powder and silica, or at least one of Ordinary Portland Cement (OPC) and back cement,
The aqueous solution consists of at least one of water and polycarboxylic acid (Polycarbcxyl acid),
The thickening coating material is formed by adding the glassy to the thickening liquid,
The thickener is formed by adding at least one of sodium carbonate (Na ₂ CO ₃ ), sodium percarbonate (2Na ₂ CO ₃ · 3H ₂ O ₂ ), and quicklime (CaO) to water and methyl cellulose. Fine dust reduction beam with a manufacturing method of the drive block. The method of claim 8,
In the spraying step, a fine dust reduction beam having a NOx removal function, and a method for manufacturing a block for a driveway, characterized in that for spraying the liquid thickening coating material, the liquid photocatalyst coating material with a nozzle, a spray gun on the surface of the cured base block. .

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