KR100946184B1 - Composite functional water permeability plat process and method of manufacturing the same - Google Patents

Abstract

PURPOSE: A composite functional permeable flat board and a manufacturing method thereof are provided to remarkably improve durability, transmissibility, strength, and functionality, and to display various colors by natural aggregate. CONSTITUTION: A composite functional permeable flat board is composed of 2~4mm aggregate 65~80 weight%, 1~2mm silica sand 5~10 weight%, cement 7.5~12.5 weight%, blast furnace slag 7.5~12.5 weight%, repair compound 1.0~5.0 weight%, phosphate 0.35~1.0 weight%, TiO2 photocatalyst powder 0.25~0.75 weight%, and expansion agent 0.25~1.0 weight%.

Description

Composite functional water permeability plat process and method of manufacturing the same

The present invention relates to a composite functional permeable flat plate mainly used for sidewalk packaging and a method of manufacturing the same, more specifically, a permeable flat plate that is excellent in aesthetics expressing a multicolored natural marble texture by the color of various aggregates, and hydroxy Calcium phosphate mixed with apatite, brucite, or hydroxyapatite and brucite in the permeation plate allows adsorption of harmful heavy metals, and photocatalytic particles exposed to the surface in case of rainfall The present invention relates to a permeable plate and a method for manufacturing the same, which are capable of removing non-point source of excellent rainwater by a photofunctional redox reaction and suppressing urban heat island phenomenon through the structural characteristics of paper sludge incineration ash and products.

The function of the paving is to enhance the protection of the road surface and to facilitate the passage of people and the vehicle through the flatness. The road paving is classified into bitumen paving, concrete paving and block paving according to the material of the surface layer. The bitumen pavement is the aggregate of the surface layer of aggregates such as asphalt or tar crushed, such as asphalt pavement, tar pavement, etc., currently occupies most of the roads around the world, the type is also very many.

Up to now, these packages have been regarded as fulfilling their role mainly as they play a structural role, but as the culture changes and people's perceptions change, the packaging becomes more functional. In the early stages of pavement in Korea, the pavement pavement was made mainly in the modern age. In the 1960s and 1970s, the pavement was changed to form surface structures using asphalt, concrete, blocks or bricks. However, packaging materials that are attracting most attention in the 2000s are materials that can transfer water to the underground ecosystem. In case of asphalt, water permeation function is provided. Through this function, it is expected to prevent flooding of road surface and reduce noise.In case of concrete, permeable concrete is developed and mainly used for paving of sidewalks or river banks. It also became.

However, the current pavement market is based on the flatness and permeability as well as the protection of the road surface, which is the basic characteristic of the pavement, and emphasizes aesthetics (visual characteristics, landscaping) while having permeability. There is a growing demand for materials that also have a function such as making the packaging material itself play an active role in suppressing heat island or participating in the decomposition of air pollutants through optical functionality.

On the other hand, the packaging materials so far are mostly materials focused on the structural function as a packaging material, and the manufacturing method is mainly a product that is completed by giving a simple function through the structural characteristics. That is, Patent No. 0692143 discloses "Silicone: 15-20% by weight, 70 vol% or more of 4-5 mm silica sand: 75-80% by weight, pigment: 4% by weight or less, ocher: 2-5% by weight, charcoal: 0.01 Preparing a lower base material at a ratio of -0.1% by weight, and mixing these base materials with water and a mixed material into a mold to form a lower layer: back cement: 15-20% by weight, 70-vol% or more is 1-2.5 mm-size silica sand: 74-80% by weight, pigment: 7% by weight or less, ocher: 1-5% by weight, charcoal: 0.01-0.1% by weight of the upper layer base material, and these base materials, water and admixture Mixing the lower layer to the upper portion to form an upper layer: and the step of covering and pressing the upper plate on the upper portion of the upper layer;

However, this technique has a problem of excessive use of cement and a cost increase due to the excessive amount of pigment to match the color due to the addition of ocher and charcoal, and a cost increase due to the formation of a two-layer structure. Therefore, the reduction of daily output is a factor of price increase.

Patent No. 0,198,022 discloses a "pass-through 100% of the aggregate and 19mmcp maximum compaction passing 95-100% in 13mmcp passes of 0-40% in the # 4 sieve based on the weight of cement relative to 1m ³ 300-500kg, water: water-cement ratio 25-40% as a standard, water-reducing agent: A mixture of less than 2% by weight of cement is added to the mold of the block to clean the surface and then subjected to the first vibration pressurization: On the upper part of the first vibration pressurized mixture in the electric process, with respect to the aggregate maximum compaction by weight 1m ³ through 100% at 5mm sieve, and pass in 1mmcp to 10%, cement: 300-500kg, water: water - 25-40% by cement based, water-reducing agent: second amount of cement Putting a mixture of less than or equal to% by weight to form a thin layer, followed by secondary vibration pressing after surface cleanup; And drying the molded article formed in the electrical process to a mold and drying the same by a conventional steam curing or drying curing method. However, the problem of raising the pH of the water permeated in the process of water permeation with an excessive amount of cement is described. In order to reduce the carbon dioxide generated from the recent cement production, it would be desirable to proceed with product development in the direction of reducing the amount of cement as much as possible. In addition, this technology also has a two-layer structure, the productivity is a problem due to a complex manufacturing process. In addition, such a multilayer structure is also a problem of low bonding strength between each layer.

Patent No. 332449 describes "a process of laying a sand filter layer and a crusher layer on the filter layer and compacting at an optimum water content with a roller; passing 100% in a 40mm sieve and 0-30% in a 5mm sieve One or two or more of crushed aggregate, crushed waste concrete, recycled aggregate, slag that passes 0 ~ 10% in 2.5mm sieve is used as aggregate, 200 ~ 400㎏ of cement in 1㎥ of maximum compaction standard of this aggregate 80 ~ 150kg of silver, admixture (reducing agent) is a step of forming a ground permeable concrete by laying and mixing the mixture mixed in the range of less than 2% of the weight of cement on the crusher layer prepared in the electrical process; The granular granularity, which is a mixture of fine aggregate, cement, water, and admixture on the surface of the permeable concrete, is used as a granular granularity, and the granular granularity is formed by laying the granular granular concrete on the ground. Thin layer packing method of the air permeability concrete, which is characterized in that it contains a process for forming a litter, but this method also has a problem of the prior art due to the use of excess cement and aggregates are covered by the cement paste, which leads to natural color display. It is difficult and has a high manufacturing cost.

In addition, Patent No. 8983 describes "In a permeable concrete block bonded to aggregates with cement as a binder, a permeable concrete block characterized in that the surface of the block is polished." There is a disadvantage, Patent No. 689183, "A) (a-iii) dry the cement and the aggregate of the particle size of 5 to 13 mm in a mixer, and then adding the blending water to mix the permeable layer raw materials; (a- Ii) drying the cement and the aggregate having a particle size of 2.5 to 5 mm in a mixer, and then adding mixed water to mix the finishing layer raw material; and (a-iii) any one of the permeable layer raw material or the finishing layer raw material. A block intermediate comprising a step of putting a molding machine to perform vibration molding, and further adding the remaining raw materials to the molding machine and then vibrating and pressing to form a pattern of an embossed part and an embossed part on the surface of the finishing layer. Manufacturing step (wherein, the particle size of the aggregate included in the permeable layer raw material is larger than the particle size of the aggregate included in the finishing layer raw material); B) steam curing the molded block intermediate at a temperature of 40 to 80 ° C .; And C) a method of manufacturing a permeable concrete block comprising the step of selectively polishing the embossed portion of the cured block intermediate. However, since the color of the product depends on the pigment, it is very artificial and the quality of the product is considerably deteriorated and the bending strength. There is a part that does not meet the standard, and the surface polish is used to damage the natural texture, and there is a problem such as causing an ankle injury when wearing high heels due to the difference in height between the intaglio and embossed parts.

Patent No. 770152 describes "70-90 parts by weight of natural aggregates of various colors, 5-15 parts by weight of blast furnace slag, 5-15 parts by weight of active fly ash, 2.5-7.5 parts by weight of caustic lime, the upper and lower parts of the aggregate Is a multi-layered permeable plate, characterized in that it consists of a slurry of 2-8 mm and 13-40 mm aggregate size, respectively. However, since zeolite is produced after curing at high temperature, energy consumption is high and another heat treatment is performed to obtain an active fly ash. Because of this, there was a problem that the economic competitiveness is lowered.

The present invention was developed in view of such circumstances, and was developed to provide a composite functional permeable flat plate and a method of manufacturing the same, which are aimed at greatly improving the product landscape and expanding and improving the functionality of the product. Various colors of natural aggregates can be expressed as it is by removing the uniform color of, and the permeability is provided through the arrangement of aggregates and aggregates to induce urban greening and rapid penetration of rainfall, and also by adding phosphate cement And the CaO component present in the blast furnace slag reacted with PO ₄ ions to produce calcium phosphate compounds of apatite hydroxide and brucite, alone or in combination, to adsorb harmful heavy metals. Low ion concentration in a weak alkaline range of 8.5 to 10.5 By adding photocatalytic function, organic pollutants and nonpoint sources such as NOx, SOx, etc. generated from automobiles are decomposed by photocatalytic redox effect under sunlight. An object of the present invention is to provide a multifunctional permeable flat plate and a method of manufacturing the same.

Permeable flat plate of the present invention for achieving the above object is 65-80 parts by weight of aggregate of 2 to 4 mm in diameter, 5 to 10 parts by weight of silica sand (diameter 1 to 2 mm), 7.5 to 12.5 parts by weight of cement, blast furnace slag 7.5 to It is characterized by consisting of 12.5 parts by weight, 1.0 to 5.0 parts by weight of repair material, 0.35 to 1.0 parts by weight of phosphate, 0.25 to 0.75 parts by weight of TiO ₂ photocatalyst powder, 0.25 to 1.0 parts by weight of expanding agent.

In addition, the manufacturing method of the composite functional permeable flat plate of the present invention is mixed 7.5 ~ 12.5 parts by weight of blast furnace slag 7.5 ~ 12.5 parts by weight of cement and 0.35 ~ 1.0 parts by weight of phosphate in a dry mixer, the water is 180 ~ 1 with respect to the mixed powder Adding 230 mm to form a slurry to form a composite material of hydroxyapatite or brookite and two phases, wherein the CaO component of the blast furnace slag and cement and the PO ₄ component of the phosphate are calcium phosphate compounds; The slurry prepared in the previous step by adding 1.0 to 5.0 parts by weight of repairing material, 0.25 to 0.75 parts by weight of TiO ₂ photocatalyst powder, and 0.25 to 1.0 parts by weight of expanding agent was added to the prepared slurry form. Reducing the fluidity to about 180mm); 65 to 80 parts by weight of aggregates 2 to 4 mm and 5 to 10 parts by weight of silica sand are added to the mixture, followed by mixing the whole mixture by vibrating press to form a permeable flat plate while applying vibration; Moving the molded body to a curing room for 3 to 6 hours in an electrical curing or steam curing in a temperature range of 25 ~ 80 ℃; Comprising a finished product comprising a polishing step of polishing the surface of the cured product using an abrasive blaster or a diamond polishing machine to express the color of the aggregate without cutting.

Hereinafter, according to the present invention, it has excellent aesthetics (corrosion), superior compressive strength and water permeability, heavy metal adsorption performance and non-point pollution removal property, low alkalinity, and heat island relaxation compared to existing impermeable, permeable, and abrasive packaging materials. It describes in detail the principle of implementation of a multi-functional permeable plate having a characteristic and a method of manufacturing the same.

The permeable flat plate of the present invention structurally exhibits a high permeability by the organic arrangement of the aggregate and the aggregate can be a fast pitching of rainwater through which it is possible to promote urban greening and prevent flooding of the road surface during rainfall.

The repairing material used in the present invention is a paper sludge incineration ash known to be excellent in water retention or pulp such as cellulose or rayon, and by adding the same, suppresses heat island phenomenon (heat absorption of 539 kPa when 1 g of water is evaporated). You can. In addition, the addition of phosphate reacts with CaO, the main component of cement and blast furnace slag, to produce hydroxyapatite or brookite or hydroxyapatite and brookite composites, which are calcium phosphate compounds with excellent adsorption characteristics, to adsorb heavy metals in the initial rainwater. , The hydrogen ion concentration of the product by the phosphate shows a low alkali range in the range of 9.5 ~ 10.5, and the photocatalytic function was introduced to decompose non-point source of rainwater and NOx, SOx of automobiles, etc. on the surface.

In addition, by limiting the size of the aggregate to the size of 2 ~ 4mm in diameter, the size of the pores is reduced and the specific surface area is increased to give as much frictional force as possible when the rainwater passes through the permeable plate to maximize the filter effect. It is done. In addition, since the size of the aggregate is fixed to one type, the primary raw material is supplied to a facility that has doubled the number of facilities such as a primary mixer, a secondary mixer, a primary raw material feeder, and a secondary raw material feeder to produce a multi-layered product. Since only a first-pass mixer can be used, the burden on facility installation cost is low, and there is an advantage that it can solve the problem of delamination between layers by existing multi-layer products.

Aggregate may be used in various crushed aggregates and recycled aggregates and glass fragments, porcelain fragments, etc. produced in nature, and is not particularly limited in the present invention. Preferably, granite crushed aggregates, silica crushed aggregates, limestone crushed aggregates, dolomite crushed aggregates, calcite, crushed aggregates, etc. may be used, and one or two or more kinds thereof may be used. . Aggregate has a range of 2-4 mm, a range of 65 to 80 parts by weight relative to the total 100 parts by weight. Outside this range, the condition of the permeable plate to be proposed in the present invention cannot be satisfied.

When the aggregate is added less than 65 parts by weight, the powder part is added in an excessive amount, so the permeability is sharply lowered, and the powder part exposed to the surface is increased after polishing, thereby achieving the purpose of exposing the natural aggregate to impart aesthetics. You will not be able to. On the other hand, when the aggregate is added in excess of 80 parts by weight, the amount of powder added as a binder decreases, and thus the bending strength and the compressive strength decrease, which leads to breakage of the product due to freezing or overloading in winter.

The silica sand used in the present invention is not particularly defined, but it is preferable to use a product having a diameter of 1 to 2 mm produced from the silica mine. Used silica sand acts to improve the fluidity of 2 ~ 4mm aggregate and binder part, improve the fillability of the edge of the product, induce to clean the appearance of the product, and improve the strength.

The cement used in the present invention is not particularly limited. Cement can usually be portland cement, alumina cement, blast furnace slag cement, fly ash cement, crude steel cement, rough steel cement, geopolymer cement, magnesium cement, magnesium phosphate cement, calcium phosphate cement and the like. In the embodiment of the present invention, conventional portland cement was used. Portland cement is the most common cement, which has the advantage of being inexpensive. In addition, when the normal cement is used, the product should be neutralized when it is used around the roadside or the garden where the greenery of the plant is supported. There are also features that do not need to.

Suitable amount of cement is 5 to 12.5 parts by weight. If the amount of cement added is less than 5.0 parts by weight, the product's strength is low, so the range of use is extremely limited. If it exceeds 12.5 parts by weight, the strength is increased but the pH is increased and the amount of blast furnace slag is relatively decreased. The production rate of the calcium phosphate compound produced in the present invention is also lowered, there is a problem that the adsorption amount of the harmful heavy metal by the calcium phosphate compound of the present invention is reduced.

Blast furnace slag plays a role in enhancing the production of calcium phosphate compounds and the long-term strength of the product. Blast furnace slag is 4,000cm ² / g, and commercially available two types of 7,000cm ² / g, preferably it is better to use a material having a fineness of ² / g is excellent in reactivity 7,000cm. It is preferable to use the addition amount in the range of 5.0-12.5 weight part. If the amount is less than 5.0 parts by weight, the amount of calcium phosphate compound produced is small, so it may not exhibit sufficient adsorption characteristics, and there is a problem of low long-term strength. If it is added in excess of 12.5 parts by weight, it is 7,000 cm ² / g of high powder, Since more than the amount of cement added, there is a problem that the strength is lowered.

In addition, paper sludge incineration ash is added to provide water retention, by-product is obtained by incineration at a constant temperature after dewatering the sludge precipitated in the sewage tank in the paper manufacturing plant. This paper sludge incinerator has been used to some extent as a concrete admixture. However, these paper sludge incineration materials contain a large amount of cellulose such as cellulose, and the -OH group contained in the cellulose has an excellent ability to absorb water. In case of using paper sludge incineration, most of the rainfall moves to the basement through pore during high humidity or rainfall, but when the temperature rises by paper sludge incineration, it lowers the temperature of the surface and heat-island. It is possible to suppress the phenomenon. In addition, the material for conserving water is not limited to paper sludge incineration, and it is also possible to use raw materials having excellent water absorption such as fiber raw materials and rayon on the market. Such a cellulose-based raw material is a material exhibiting high absorbency enough to be used as an absorbent material for women's sanitary napkins and baby diapers. In the present invention, the cellulose raw material is not limited, but the paper sludge incinerator and Fibra-Cel used as a filtration aid commercially available from Celite Korea Co., Ltd. were used by the present inventors.

The water-retaining mechanism of the present invention is capable of maintaining moisture in this space because macro, meso, and micro pores are structurally generated when cured with aggregate such as fine grain and cement. In addition, pulp materials such as paper sludge and cellulose, which are very water-retaining, have improved water repellency and have moisturizing ability more than several times that of existing products. The absorption power of the cellulose-based raw material is because the -OH group contained therein exhibits hydrophilicity. Another feature of the addition of the cellulose-based raw material is that the cellulose has a hydrogen bond and is very tough, thus improving the tensile and bending resistance of the product. When the surface of the product is dried and dried by a hot day, water is supplied by capillary force from the lower layer to the upper layer, so that the cooling effect of the road surface using the evaporative heat of water can be maintained for a long time. It is preferable to add the addition amount of a repair material in 1.0-5.0 weight part range. If it is added less than 1.0 parts by weight it is difficult to exhibit the desired water retention in the present invention, if the addition of more than 5.0 parts by weight of the water absorbing capacity of the repairing material should be added to the excess water during molding, the problem that the compressive strength and bending strength of the product is lowered There is.

Photocatalysts are generally commercially available P-25, ST-01 of Ishihara, SW-300B of millennium, and the like. In the embodiment of the present invention, a product prepared by the present inventors or the like was used. The photocatalyst prepared by the present inventors is characterized in that it has a photoactivity of a degree capable of completely decomposing methylene blue within 10 minutes. In addition, the added photocatalyst serves to fill the strength pores of cement as nanoparticles. Therefore, the effect of increasing the compressive strength can be obtained.

The swelling agent is a commercially available calcium sulfoaluminate, and induces early strength by producing ettringite, thereby accelerating the polishing time, and effectively controlling the shrinkage of cement. It is preferable to add the usage-amount of an expanding agent in the range of 0.25-1.0 weight part. If it is added less than 0.25 part by weight, there is a problem that the crack and early strength expression due to initial shrinkage is low because the amount of initial ettringite is low, and when added exceeding 1.0 part by weight, initial ettringite is produced. It promotes the strength, but the cost of calcium sulfur aluminate is about 600 won / kg, which is about 5 times of cement, so it is economically burdensome.

In the case of abrasive products, natural marble texture cannot be exhibited unless the middle surface of the aggregate is polished. Most surfaces were first cut with a cutter and then polished through a polishing device. However, the process of cutting the molded body including aggregate is expensive. Not only does it take equipment, but the process itself is very demanding.

In the present invention, it is possible to continuously pass four or more, preferably six or more abrasive devices having a difference in the thickness of the abrasive stone, and at first, the surface is polished with coarse-grained abrasive stones and gradually polished into small particles. It can exert about half cutting effect. It is also possible to freely adjust the surface roughness through a continuous polishing process.

The composite functional permeable plate formed by the manufacturing method of the present invention removes the cement from the surface of the product and expresses various colors of the natural aggregate as it is, thereby providing an economic stone construction effect by providing a packaging material similar to natural marble. In addition, by providing permeability, it not only induced urban recording and rapid penetration of rainfall, but also designed to play an active role in the air environment problem by distinguishing it from existing products through optical functionality. By producing calcium phosphate compound with excellent ability, it is possible to purify the initial excellent water, and it is possible to suppress heat island phenomenon through water retention, so it will be able to fulfill its role as an environmentally friendly material.

Example 1

After mixing 10.5 parts by weight of blast furnace slag and 10 parts by weight of cement with dry powder, an aqueous solution of phosphoric acid diluted 1.0 parts by weight of phosphoric acid was added thereto, followed by slurrying to induce a reaction. The amount of aqueous solution of phosphate is limited to the amount that does not inhibit the hydration reaction of cement, and the ratio of solid and liquid is set to be in the range of 180 ~ 230mm, where 2.5 parts by weight of paper sludge incineration ash and 0.5 parts by weight of expansion agent, photocatalyst 0.5 part by weight of powder is added to complete the slurry. Here again, 65 parts by weight of aggregate and 10 parts by weight of silica sand selected to 2-4 mm in diameter are mixed and mixed for a predetermined time. The mixture is moved to the feed through the conveyor belt to form a composite functional water-permeable flat plate by filling and vibrating pressure molding while vibrating the mold.

The composite functional water permeable plate, which is a molded article, is steam cured at 50 ° C. for 6 hours and left at room temperature for 3 days. The cured product is lightly ground at the bottom of the lower part using a grinding machine. This is because if the bottom surface is uneven, irregularities and bends may occur when polishing the upper surface. Since not all products come out in the molding step, the bottom surface is polished to improve the uneven polishing characteristics of the surface caused by the height difference of the existing products. In addition, the surface grinding process is to pass through the six grinding devices with different rolls in succession to cut the cutting process unlike the existing products.

The compressive strength of the prepared composite permeable flat plate was 34.0 MPa and flexural strength 6.5 MPa at 7 days of age. To check the pH of the finished product, the pH change was measured by adding 5 times the product to water, and the pH change was measured. 1 is shown. The pH measurement after immersion in water for 30 days showed 10.03.

In order to confirm the photofunctionality of the finished product, NOx removal characteristics were investigated by using the air air quality test method. The product of the present invention was installed in a fixed chamber equipped with UV (16W), filled with 1.0 ppm of NO ₂ injection gas, and then irradiated with UV for 1 hour to measure the NOx removal rate. The result showed 65% removal efficiency.

In order to confirm the adsorption characteristics of heavy metals of the finished product, 2ppm 1L of Cd standard solution was prepared and the product was precipitated, and the adsorption capacity of Cd after 5 minutes and adsorption capacity after 6 hours was investigated by ICP analyzer. As a result, the adsorption capacity of Cd ion after 5 minutes was 96%, and after 9 hours it was 99.4%.

The water holding power of the finished product was evaluated by carrying out water holding test to maintain the water absorption of the product. The product was immersed in water for 24 hours and taken out to measure the absorption rate. The conservative experiment was carried out in a dark room at 20 ° C. and a relative humidity of 55 ± 5 ° C. The height of the surface was set to 60 ℃ by using a halogen lamp, and the mass of the product was recorded on the scale hourly and the mass change was investigated until 24 hours later. As a result, the repair amount was 55.6% at 24 hours.

The internal crystal phase (XRD) data which may indicate the adsorption performance of the product was as shown in FIG. 1, and the internal micrograph was as shown in FIG. 2. From the graph of the photofunctionality in FIG. 3, the NOx removal rate was confirmed.

Example 2

In the same manner as in Example 1, the content of blast furnace slag 10 parts by weight, cement 11.25 parts by weight, phosphoric acid 1.0 parts by weight, paper sludge incineration ash 1.0 parts by weight, photocatalyst powder 0.75 parts by weight, expanding agent to 1.0 parts by weight It was. As a result, the compressive strength was 38.3MPa, the flexural strength was 6.8MPa, the optical function was 62%, and the Cd adsorption capacity was 90% at 10 minutes and 98.5% at 6 hours. Also, at 24 hours, the amount of repair was 37.6%. The pH measurement after immersion in water for 30 days showed 10.34.

Example 3

The same procedure as in Example 1 was carried out, but the blast furnace slag content was 7 parts by weight, cement 11 parts by weight, phosphoric acid 1.0 parts by weight, paper sludge incineration ash 5.0 parts by weight, photocatalyst powder 0.75 parts by weight, expanding agent to 0.25 parts by weight It was. As a result, the compressive strength was 17.4 MPa and the flexural strength was 4.1 MPa. The optical functionality was 56%, and the Cd adsorption capacity was 75% at 10 minutes and 90.5% at 6 hours. In addition, the maintenance amount was 57.0% in 24 hours. PH measurement after immersion in water for 30 days showed 10.42.

Example 4

The same procedure as in Example 1 was carried out, but the paper sludge incineration ash was pulverized and refined to change to "Fibra-Cel" which is currently commercially available as a filter aid. As a result, the compressive strength was 18.1MPa and the flexural strength was 6.2MPa, although the compressive strength was lower than other examples by the strengthening of the tensile strength of the pulp, and the flexural strength was improved, the optical functionality was 60%, and the Cd adsorption capacity was 88% in 10 minutes, 6 hours At 97.5%. In addition, the maintenance amount was 59.1% at 24 hours. PH measurement after immersion in water for 30 days showed 10.23.

Example 5

In the same manner as in Example 1, but 75 parts by weight of aggregate, 5 parts by weight of sand, 7.5 parts by weight of blast furnace slag, 7.5 parts by weight of cement, 1.0 parts by weight of phosphoric acid, 2.5 parts by weight of paper sludge incinerator, photocatalyst The powder was changed to 0.75 parts by weight and the swelling agent to 0.75 parts by weight. As a result, the compressive strength was 18.3MPa, the flexural strength was 4.5MPa, the optical function was 58%, and the Cd adsorption capacity was 84% at 10 minutes and 94.5% at 6 hours. In addition, the repair amount was 46.0% at 24 hours. PH measurement after immersion in water for 30 days showed 9.62. This is because of the small amount of cement used.

Example 6

The same procedure as in Example 1, except that the phosphoric acid was changed to potassium phosphate. As a result, the compressive strength was 30.5MPa, the flexural strength was 6.1MPa and the optical functionality was 63%. The Cd adsorption capacity was 94% at 10 minutes and 98.9% at 6 hours. In addition, the maintenance amount was 54.9% at 24 hours. The pH measurement after immersion in water for 30 days showed 10.47.

Example 7

The same procedure as in Example 1, except that the phosphoric acid was changed to sodium phosphate. As a result, the compressive strength was 32.5MPa, the flexural strength was 6.1MPa and the optical functionality was 52%. The Cd adsorption capacity was 95% in 10 minutes and 98.4% in 6 hours. In addition, the maintenance amount was 55.2% at 24 hours. The pH measurement after immersion in water for 30 days showed 10.20.

Example 8

In the same manner as in Example 1, phosphoric acid was changed to ammonium phosphate. As a result, the compressive strength was 35.2MPa, the flexural strength was 6.7MPa and the optical functionality was 62%. The Cd adsorption capacity was 95% at 10 minutes and 96.8% at 6 hours. In addition, the maintenance amount was 53.5% at 24 hours. The pH measurement after immersion in water for 30 days showed 10.10.

Comparative Example 1

The same procedure as in Example 1 except that the cement was changed to 12.5 parts by weight except for paper sludge incineration. As a result, the compressive strength was 32.5MPa, the flexural strength was 5.6MPa and the optical function was 54%. The adsorption capacity of Cd was 94% at 10 minutes and 97.3% at 6 hours. In addition, the maintenance amount was 8.0% in 24 hours. The pH measurement after immersion in water for 30 days showed 10.14.

Comparative Example 2

The same procedure as in Example 1 except that the cement was changed to 11 parts by weight except phosphoric acid. As a result, the compressive strength was 28.5MPa, the flexural strength was 5.2MPa and the optical function was 57%. The Cd adsorption capacity was 7% at 10 minutes and 21.0% at 6 hours. In addition, the repair amount was 52.0% at 24 hours. PH measurement after soaking in water for 30 days showed 11.6.

Comparative Example 3

The same procedure as in Example 1, except that the cement was changed to 10.5 parts by weight except for the expanding agent. As a result, the compressive strength was 14.5MPa, the flexural strength was 3.5MPa and the optical functionality was 51%. The Cd adsorption capacity was 87% at 10 minutes and 93.2% at 6 hours. In addition, the repair amount was 46.7% at 24 hours. PH measurement after immersion in water for 30 days showed 10.42.

[Comparative Example 4]

Implemented in the same manner as in Example 1, aggregate 55 parts by weight, silica sand 10 parts by weight, blast furnace slag 14.7 parts by weight, cement 14 parts by weight, phosphoric acid 1.4 parts by weight, paper sludge incineration ash 3.5 parts by weight, photocatalyst powder 0.7 Parts by weight, 0.7 parts by weight of expanding agent. As a result, the compressive strength was 42.0MPa, the flexural strength was 7.5MPa, the optical functionality was 68%, and the Cd adsorption capacity was 95% at 10 minutes and 99.2% at 6 hours. In addition, the maintenance amount was 59.0% in 24 hours. PH measurement after immersion in water for 30 days showed 9.77. However, the water permeability did not appear at all like the sealed product.

[Comparative Example 5]

In the same manner as in Example 1, the aggregate was fixed to 85 parts by weight, silica sand 5 parts by weight, blast furnace slag 4.2 parts by weight and cement 4.0 parts by weight, phosphoric acid 0.4 parts by weight, paper sludge incineration ash 1.0 parts by weight and photocatalyst powder 0.2 The weight part and the expanding agent were changed to 0.2 part by weight. As a result, the water permeability was greatly improved and it became a product of water permeability, but the compressive strength of 9.5MPa and the flexural strength of 1.6MPa were very low, making it unsuitable for use as a flooring material. The removal rate, 76.5% after 6 hours, and 25.5% after 24 hours, were found to fall in terms of functionality. In addition, the hydrogen ion concentration showed 9.80 as a result of pH measurement after soaking in water for 30 days because the amount of cement used was very small.

Comparative Example 6

The same procedure as in Example 1, except the photocatalyst powder was changed to 10.5 parts by weight of cement. As a result, the compressive strength was 32.8MPa and the flexural strength was 6.5MPa, but the optical function was very low 4.5%. The Cd adsorption capacity was 84% removal after 10 minutes, 92.3% after 6 hours, and repair amount 48.9 after 24 hours. % Is indicated. The pH measurement after immersion in water for 30 days showed 10.21.

TABLE 1

division pH change (h) Remarks 12 36 72 120 240 480 720 Example 1 12.25 11.32 10.94 10.66 10.38 10.35 10.03 Example 2 12.33 12.20 12.01 11.63 11.23 10.55 10.34 Example 3 12.55 12.41 12.19 11.67 11.47 10.78 10.42 Example 4 12.21 11.70 11.00 10.87 10.86 10.65 10.23 Example 4 11.66 11.45 11.09 10.48 10.28 9.94 9.62 Example 6 11.91 11.83 11.72 11.4 11.0 10.89 10.47 Example 7 12.15 12.12 12.03 11.81 11.24 11.18 10.20 Example 8 12.15 12.14 11.96 11.75 11.27 11.18 10.10 Comparative Example 2 13.2 12.8 12.6 12.6 12.8 12.4 12.3

TABLE 2

division Compressive strength (MPa) Flexural strength (MPa) pH value (30 days) NOx removal efficiency (%, 1 hour) Cd adsorption capacity (%) Remuneration (%) (24 hours) Remarks 10 minutes 6 hours Example 1 34.0 6.5 10.03 65 96 99.4 55.6 Example 2 38.3 6.8 10.34 62 90 98.5 37.6 Example 3 17.4 4.1 10.42 56 75 90.5 57.0 Example 4 18.1 6.2 10.23 60 88 97.5 59.1 Example 5 18.3 4.5 9.62 58 84 94.5 46.0 Example 6 30.5 6.1 10.47 63 94 98.9 54.9 Example 7 32.5 6.1 10.20 52 95 98.4 55.2 Example 8 35.2 6.7 10.10 62 95 96.8 53.5 Comparative Example 1 32.5 5.6 10.14 54 94 97.3 8.0 Comparative Example 2 28.5 5.2 12.3 57 7 21.0 52.0 Comparative Example 3 14.5 3.5 10.42 51 87 93.2 46.7 Comparative Example 4 42.0 7.5 9.77 68 95 99.2 59.0 Impervious Comparative Example 5 9.5 1.6 9.80 34 57 76.0 25.5 Comparative Example 6 32.8 6.5 10.21 4.5 84 92.3 48.9

1 is an internal crystal phase (XRD) graph showing the adsorption performance of the specimen obtained in Example 1,

2A and 2B are internal micrographs of specimens obtained by Example 1 and Comparative Example 1,

3 is a graph showing the NOx removal rate of the specimen obtained by Example 1 and Comparative Example 6.

Claims (7)

65 to 80 parts by weight of aggregate having a diameter of 2 to 4 mm, 5 to 10 parts by weight of sand having a diameter of 1 to 2 mm, 7.5 to 12.5 parts by weight of cement, 7.5 to 12.5 parts by weight of blast furnace slag, paper sludge incinerator, rayon, cellulose (fibrin) A composite functional water permeable plate comprising 1.0 to 5.0 parts by weight of a repair material, 0.35 to 1.0 parts by weight of phosphate, 0.25 to 0.75 parts by weight of TiO ₂ photocatalyst powder, and 0.25 to 1.0 parts by weight of an expanding agent. The composite functional permeable plate according to claim 1, wherein the blast furnace slag has a high powder degree of 7,000 cm ² / g. delete The composite permeable plate of claim 1, wherein the phosphate comprises phosphoric acid, potassium phosphate, sodium phosphate and ammonium phosphate. Mixing 7.5-12.5 parts by weight of blast furnace slag, 7.5-12.5 parts by weight of cement and 0.35-1.0 parts by weight of phosphate in a dry mixer, and adding water to make the main powder 180-230 mm with respect to the mixed powder, and blending them in a slurry form; The slurry prepared by adding 1.0 to 5.0 parts by weight of paper sludge incineration ash, 0.25 to 0.75 parts by weight of TiO ₂ photocatalyst powder, and 0.25 to 1.0 parts by weight of expanding agent, and the range of powder and liquid phase that can prepare a permeable flat plate (leading) 180 mm) to reduce the fluidity; 65 to 80 parts by weight of aggregates of 2 to 4 mm and 5 to 10 parts by weight of silica sand are added to the slurry having reduced fluidity, and the whole mixture is moved to a vibration press to form a permeable flat plate while applying vibration. Moving the molded body to a curing room for 3 to 6 hours in an electrical curing or steam curing in a temperature range of 25 ~ 80 ℃; A method for producing a composite functional permeable plate comprising a polishing step of expressing the color of the aggregate by polishing the surface of the cured product using a polishing machine without cutting. 6. The method of claim 5, wherein the phosphate is used diluted in water. 6. The method of claim 5, wherein the polishing step continuously passes four or more polishing apparatuses having different thicknesses of abrasive stones.

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