KR20230141996A - Manufacturing method of concrete block using oyster shell and slag and marine ecological block using same - Google Patents

Abstract

The present invention includes a pretreatment step of preparing pulverized oyster shell material, a mixing step of preparing mortaring raw materials by mixing the pulverized oyster shell material and cement using a stirrer, and placing the mortarizing raw materials into a molding device for building materials. It is characterized in that it includes a molding step of producing a pressure-molded building material and a drying step of putting the building material into a drying device and drying it at a predetermined temperature.
According to the present invention, oyster shells, which are industrial waste, and slag generated by separating from molten iron when melting iron ore introduced into the blast furnace during the steel manufacturing process are used to produce eco-friendly sidewalk blocks, street tree protection boards, bricks, interior and exterior building materials, artificial reefs, etc. It concerns methods of manufacturing building and industrial materials and products using them.

Description

Manufacturing method of concrete block using oyster shell and slag and marine ecological block using same {Manufacturing method of concrete block using oyster shell and slag and marine ecological block using same}

The present invention relates to a method of manufacturing concrete blocks using oyster shells and slag, and to artificial blocks using the same. More specifically, the present invention relates to oyster shells, which are industrial waste, and iron ore introduced into the blast furnace in the steel manufacturing process, which is separated from molten iron and generated during melting. It relates to a method of manufacturing construction and industrial materials such as eco-friendly sidewalk blocks, street tree protection boards, bricks, interior and exterior building materials, artificial reefs, etc. using slag, and products using the same.

Clams are molluscs that surround their bodies with two flat shells. The shell that encloses clams is mainly composed of calcium and is burned to make lime, and is also used as decorations, beauty ingredients, feed, or construction materials, but under current law, it is classified as a fishery by-product and industrial waste.

Oyster shells, which are nutritionally excellent as they contain iron, taurine, calcium, vitamin A, etc. and are supplied as a delicious food ingredient on the tables of ordinary households, face various problems in discarding them as a marine by-product. In particular, oysters are the number one shellfish export item in Korea, and according to the national statistics portal, the average annual domestic production over the past five years has been reported to be 3 million tons. Oyster production is steadily increasing not only for domestic consumption but also for exports to Asia and the United States, and as the oyster processing industry develops, the production of oyster shells is also increasing. Oyster shells account for 850,000 tons of domestic fishery by-product emissions annually. It amounts to about 350,000 tons, accounting for more than 40% of the total.

Oyster shells are recycled in various fields. In Korea, they are used as eco-friendly fertilizer and livestock feed, limestone alternative fuel or concrete material, construction aggregate, and beauty and health foods. However, because this conventional oyster shell recycling method has limitations in processing oyster shells, a costly method of disposing of all oyster shells to designated waters in the East Sea is currently being implemented.

Oyster shells are also considered industrial waste, but since there is no proper disposal method, not only do they place an economic burden on the fishermen who produce them, but they also cause serious environmental damage due to bad smells. Therefore, oyster producers and processors, as well as the country's largest oyster-producing local governments such as Tongyeong and Yeosu, must come up with a plan to efficiently and quickly process oyster shells as soon as possible for sustainable oyster farming, processing, and distribution. are in a situation

A method of recycling shells, which mainly contain calcium carbonate, has been proposed to replace natural aggregates for concrete such as sand or gravel. In general, concrete means mixing cement with coarse aggregate such as gravel and fine aggregate such as sand, adding water, kneading the mixture, or hardening it.

In principle, river sand was used as fine aggregate, but in accordance with environmental protection regulations, the amount of river sand used is gradually decreasing, and the use of sea sand, crushed sand, or recycled sand is gradually increasing to replace it. However, in the case of sea sand, as with river sand, the mining of stone dust and sand is restricted to prevent indiscriminate damage to nature, so the price of raw materials is rising every year, while the quality of sand is decreasing.

In order to solve the above-mentioned problems, the following prior technologies have been proposed.

The method for manufacturing ground-improved solidification material using oyster shell shells of the proposed prior art 1 (Korean Patent No. 10-0464666) includes the steps of washing the oyster shell shells to remove salt, pulverizing the salt-free oyster shell shells, and pulverizing the crushed oyster shell shells. A classification step of powdering to a predetermined particle size, a calcination step of generating quicklime (calcium oxide) by burning oyster shell powder to remove carbon dioxide, and reacting the product ash generated in the calcination step with water to generate slaked lime (calcium hydroxide). It includes a mixing step of mixing quick lime or slaked lime with fly ash, gypsum, blast furnace slag, etc.

Prior art 1 discloses a ground improvement type solidification material using oyster shells that can be recycled to replace limestone and reacted with other mixed materials to improve the ground or used as a filler for underground cavities and to solidify sludge of wastewater. there is.

In addition, the method for manufacturing a hydraulic combination using oyster shell and blast furnace slag in Prior Art 2 (Korean Patent No. 10-0472418) involves washing and drying oyster shells and selectively heat treating them, and pulverizing and processing the oyster shells to produce blast furnace slag and In the hydraulic combination formed by mixing together, the oyster shell is heat treated at 700 to 1,000°C and subjected to a hydration reaction to obtain slaked lime (Ca(OH)2), adding 5 to 30% as an alkaline stimulant to blast furnace slag and the heat treatment. It is characterized by producing a hydraulic combination by pulverizing uncooked oyster shells to 100㎛ or less and adding 10 to 50% of them as filler to blast furnace slag.

Prior art 2 uses oyster shells and clam shells, which are generated in large quantities as by-products of the aquaculture industry and fishing in coastal waters and are a serious source of pollution in the coastal environment, and blast furnace slag generated as industrial by-products to create lightweight concrete, that is, hydraulically hardened body. A method for manufacturing is disclosed.

As mentioned above, there are various attempts to recycle waste shells as fine aggregate for concrete, but it is realistically difficult to apply the method because it costs a lot of money to recycle.

Therefore, there is a need for an eco-friendly shell utilization method that can sufficiently replace aggregates such as natural sand or stone dust by maintaining or improving the structural strength of concrete while consuming large amounts of waste shells.

Korean Patent No. 10-0464666: Manufacturing method of ground improvement type solidified material using oyster shells Korean Patent No. 10-0472418: Manufacturing method of hydraulic combination using oyster shell and blast furnace slag

The present invention was created to solve the problems of the prior art described above, by optimizing the mixing ratio of oyster shell and slag to supply fine aggregate for concrete that exhibits superior strength and water absorption rate compared to concrete mixed with existing stone powder and sand. The goal is to provide a method of manufacturing artificial blocks using oyster shells and slag that can provide a stable supply of raw materials and prevent damage to nature caused by mining of raw materials such as sand.

In addition, in the present invention, in order to manufacture human bone blocks with excellent strength and water absorption, they are recycled and supplied as fine aggregate for concrete together with oyster shells and slag, so that they can be used as construction materials such as bricks, sidewalk blocks, road paving materials, marine structures, and interior and exterior finishing materials for buildings. The purpose is to provide applicable concrete.

In order to achieve the above object, the method of manufacturing a concrete block using oyster shells and slag according to the present invention and an artificial block using the same include a pretreatment step of preparing crushed oyster shells and mixing the crushed oyster shells and cement using a stirrer. A mixing step of preparing mortarized raw materials by mixing, a molding step of putting the mortarized raw materials into a molding device for building materials to create building materials pressurized at a preset pressure, and putting the building materials into a drying device and drying them at a predetermined temperature. Includes a drying step.

The pretreatment step includes an oyster shell treatment process of spraying photosynthetic microorganisms on the oyster shells, a washing and drying process of putting the oyster shells that have undergone the oyster shell treatment process into a washing device, washing the oyster shells with water and drying them at room temperature, and the washing and drying process of spraying photosynthetic microorganisms on the oyster shells. It includes a grinding process in which oyster shells treated in the drying step are put into a grinder to prepare crushed oyster shells.

The pretreatment step includes a washing and drying process in which the collected oyster shells are placed in a washing device and washed with water, a crushing process in which the washed and dried oyster shells are placed in a crusher and crushed, and the oyster shells that have completed the crushing process are predetermined. It includes an oyster shell processing process of producing pulverized oyster shells by placing them in a device, heating, drying, and pulverizing them at 100 to 120°C for 24 hours.

The crushed oyster shell is characterized by having an assembly ratio of 2.1 to 2.7 by passing through a screen with a diameter of 5 mm.

In the mixing step, 3 to 4 parts by weight of CaO, 2 to 3 parts by weight of SiO2, 1 to 2 parts by weight of Al2O3, 0.1 to 0.5 parts by weight of SO3, 0.1 to 0.5 parts by weight of MgO, and 0.1 to 0.6 parts by weight of Fe2O3 It includes the cement preparation process of putting the parts into the agitator.

The mixing step is a polymer consisting of 50 to 60 parts by weight of Ethylene-Vinyl Acetate Emulsion, 20 to 30 parts by weight of Acrylate Polymer Emulsion, and 5 to 10 parts by weight of Synthetic Rubber Latex. It includes a curing agent preparation process in which polymer liquid curing agent diluted with mixture and water at a weight ratio of 1:4 is added to a stirrer.

The mixing step includes 5 to 50 parts by weight of stone dust, 30 to 60 parts by weight of ferronickel slag, and 10 to 25 parts by weight of oyster shell pulverized material that has undergone the pretreatment step, masato, stone dust, kaolin, red clay, and natural materials for 10 parts by weight of cement. It includes an aggregate preparation process in which at least one of pozzolan, illite, perlite, and granite is mixed and placed in a stirrer to obtain mortaring raw materials.

At this time, the composition ratio of the pulverized oyster shell material 20 and the ferronickel slag is 1:3 to 1:2.4, and the ferronickel slag preferably has a particle size in the range of 1 to 10 mm.

The drying step is characterized by drying the pressure-molded building material at 40 to 70° C. for 2 to 4 hours in the drying device.

It is characterized in that an artificial marine block of a preset shape is formed using the concrete block manufacturing method using oyster shells and slag.

The method of manufacturing a concrete block using oyster shells and slag of the present invention has the same physical properties as conventional concrete using only sand as a fine aggregate, and has the effect of resource utilization by recycling oyster shells, which are coastal waste, and slag, a by-product from steel manufacturing. It not only prevents environmental pollution, but also reduces construction costs by lowering the cost of manufacturing concrete.

In addition, it is possible to develop products with various functions and strengths by adjusting the weight ratio according to the physical properties and water content of oyster shell powder, mixed aggregate made of various surrounding soil components, non-toxic hardener, and natural cement, making it possible to develop products with various functions and strengths, such as blocks for carriages, bricks, and indoor construction. It is possible to manufacture products such as exterior materials, and in the future, various products such as functional artificial reefs, street tree protection plates, and fish farm blocks can be developed.

Figure 1 is a block diagram according to the first embodiment of the method of manufacturing a concrete block using oyster shell and slag according to the present invention,
Figure 2 is a block flow diagram of Figure 1,
Figure 3 is a conceptual diagram of Figure 1.
Figure 4 is a conceptual diagram of the second embodiment of the method for manufacturing concrete blocks using oyster shells and slag according to the present invention;
Figure 5 is an example image of an artificial block using the method of manufacturing a concrete block using oyster shell and slag according to the present invention.

Hereinafter, a personal information protection guestbook according to an embodiment of the present invention will be described in detail with reference to the attached drawings. Since the present invention can make various changes and take various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components. In the attached drawings, the dimensions of the structures are enlarged from the actual size for clarity of the present invention.

Terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

As shown in Figures 1 and 2, the method (S100) of manufacturing a concrete block using oyster shells and slag according to the first embodiment of the present invention includes a pretreatment step (S110), a mixing step (S120), and a forming step ( It consists of a drying step (S130) and a drying step (S140).

In the case of this embodiment, mixed aggregate, which is a mixture of cement, polymer liquid hardener, oyster shell powder, and at least one of masai soil, stone dust, kaolin, red clay, natural pozzolan, illite, perlite, and elvan stone, is introduced into the agitator 400. This is a method of mixing and turning it into mortar.

In the case of the above mortaring method, mixed aggregate containing cement, polymer liquid hardener, oyster shell powder, and at least one of the selected on-site soil, stone dust, kaolin, red clay, natural pozzolan, illite, perlite, and elvan stone is mixed. This is a method for obtaining building materials by injecting the mortarized composition into a building material molding device 500 for manufacturing any one of sidewalk blocks, bricks, street tree protection plates, interior and exterior building materials, and artificial reefs.

This was disclosed because it is suitable for mass production and can also be applied to the production of other building materials.

Next, each of the above steps will be explained in detail.

The pretreatment step (S110) consists of an oyster shell processing process (S111), a washing and drying process (S112), and a grinding process (S113) in order to cause the oyster shell to react with microorganisms and decompose the protein while removing the odor generated from the oyster shell. It comes true.

The oyster shell processing process (S111) involves spraying photosynthetic microorganisms on the collected oyster shells using a spray device. It is treated by containing photosynthetic microorganisms in a spray device and spraying them on collected oyster shells using the spray nozzle of the spray device. Alternatively, as shown in the drawing, the oyster shell is brought in, and this can also be done by a microbial reaction device 100 formed to spray microorganisms into the oyster shell, but the equipment cost increases, but it can be processed quickly. Therefore, it can be flexibly selected and applied depending on the condition of the oyster shell, field conditions, and urgency of treatment.

The washing and drying process (S112) is a process of obtaining oyster shells that have undergone the oyster shell processing process (S111), putting them into the washing device 200, washing the oyster shells with water to remove salt and contaminants, and then drying them at room temperature. . To explain more specifically, oyster shells are obtained from the microbial reaction device 100, placed in a washing device, washed with fresh water to remove salt and contaminants present in the oyster shells, and dried sufficiently at room temperature to produce clean oyster shells. It is a process of acquiring.

In the crushing process (S113), the oyster shell processed in the washing and drying step (S112) is put into the crusher 300 and passed through a screen with a diameter of 5 mm after crushing to produce crushed oyster shell product (S113) having an assembly ratio of 2.1 to 2.7. This is the stage of obtaining 20). The reason for pulverizing oyster shells as described above is to save stirring time by pulverizing them in advance in order to improve mixing efficiency during stirring in the stirrer 400 below.

The mixing step (S120) is a step of preparing mortaring raw materials by mixing various aggregates including cement in order to harden the cement using the stirrer 400.

The mixing step (S120) consists of a cement preparation process (S121), a hardener preparation process (S122), and an aggregate preparation process (S123).

The cement preparation process (S121) includes 3 to 4 parts by weight of CaO, 2 to 3 parts by weight of SiO2, 1 to 2 parts by weight of Al2O3, 0.1 to 0.5 parts by weight of SO3, 0.1 to 0.5 parts by weight of MgO, and Fe2O3 for 10 parts by weight of cement. This is a process of preparing 0.1 to 0.6 parts by weight and putting it into the stirrer (400).

In the case of the cement, the amount can be freely adjusted within the range of parts by weight of each composition described above, but if mixed in less than parts by weight of each composition, solidification may be delayed, sufficient hydration may not be achieved, or workability may be impaired. This is not good, and if mixing exceeds parts by weight of each composition, the solidification speed is fast, making uniform mixing quite difficult and workability deteriorating.

The hardener preparation process (S122) includes 50 to 60 parts by weight of Ethylene-Vinyl Acetate Emulsion, 20 to 30 parts by weight of Acrylate Polymer Emulsion, and 5 to 10 parts by weight of Synthetic Rubber Latex. This is a process of preparing a polymer liquid hardener diluted with parts by weight of polymer mixture and water at a weight ratio of 1:4 and adding it to the stirrer (400).

In addition, it is preferably used diluted at a weight ratio of 1:4, but the dilution ratio may be appropriately adjusted considering the required quality standards (adhesion, bending strength, tensile strength, etc.) and manufacturing costs.

In the case of the polymer liquid hardener, if it exceeds the above-mentioned weight part range, problems may arise that interfere with the hydration of cement, or the adhesive force may become strong, making it impossible to provide flexible elasticity in the future, raising the risk of cracks. If the weight is less than the range, the adhesive strength decreases, causing problems in withstanding sufficient load, or the required tensile strength cannot be guaranteed.

The aggregate preparation process (S123) includes 5 to 50 parts by weight of stone dust, 30 to 60 parts by weight of ferronickel slag, and 10 to 25 parts by weight of crushed oyster shell material (20) that has undergone the pretreatment step (S110) for 10 parts by weight of cement. This is the step of obtaining mortaring raw materials by mixing at least one of , masato, stone dust, kaolin, red clay, natural pozzolan, illite, perlite, and elvan stone and adding them to the stirrer 400.

Among the above mixtures, kaolin is a mud created by the decomposition of rocks and stones due to the chemical action of water or carbonic acid, and the main minerals are kaolinite AlO·2SiO·2HO and halloysite AlO·SiO·4HO, which emit far infrared rays and negative ions. , When aerobic microorganisms come into contact with kaolin, the microorganisms have the characteristic of being activated by the suitable environment.

Among the above mixtures, red clay refers to soil in a natural state composed of silica and soil containing iron oxide and anhydrous iron oxide, and masato is soil created by weathering granite and is also called granite soil.

In other words, instead of sand, which is depleted, kaolin, red clay, and ash soil available in the region are added, and cement and hardener without harmful substances are used, making it possible to manufacture eco-friendly building materials.

In the mixing step (S120), after the aggregate preparation process, at least one of stone dust, kaolin, natural pozzolan, red clay, masato, illite, zeolite, perlite, and elvan stone is added to give a unique color to the building material being manufactured. It may further include a dye preparation process (S124) of preparing 5 to 20 parts by weight of the mixed natural mineral mixture.

The dye preparation process (S124) will be described in more detail.

The dye preparation process (S124) mixes powders of various colors so that the finished concrete can express various colors. For example, oyster shell powder itself is white, but when mixed with masato, it becomes pink, and when mixed with red clay, it becomes reddish-brown.

Therefore, natural colors can be created by utilizing the unique colors of the natural minerals mentioned above, and the material properties of oyster shell powder, which is mainly composed of calcium carbonate, can provide flame retardancy and insulation performance, and have the function of purifying indoor air and using red clay and natural materials. It is possible to produce building materials that can provide a lively indoor space by using pozzolan to emit far-infrared rays.

In addition, the natural pozzolan is used in fine powder form, and the pulverized natural germanium (pozzolan) powder is classified through a sieve, etc. to have an appropriate particle size.

At this time, if the particle size of the germanium (pozzolan) powder is too small (less than 0.1㎛), it may aggregate when mixed with oyster shell powder, and if it is too large (over 20㎛), the far-infrared emissivity is low due to the small surface area compared to the amount used, so it may be 0.1 to 0.1㎛. Use germanium powder with a size of 20㎛.

Considering this, it is preferable to use germanium powder with a particle size of 1 to 10㎛, and germanium powder is used as a main mineral for far-infrared radiation, which also emits negative ions.

The illite is a mica group mineral belonging to the monoclinic system, and the zeolite is also called zeolite and is mainly a silicate hydrate of aluminum, sodium, and calcium.

If a mixture of at least one of the above-mentioned kaolin, natural pozzolan, red clay, sandstone, stone dust, illite, perlite, zeolite, and elvan is additionally mixed, not only the original color but also the same color as above possessed by the mineral in question is added. By being able to provide functions, it becomes possible to manufacture various functional building materials.

The molding step (S130) is a step of pressurizing and molding the mortared raw material into the molding device 500 for building materials. The molding device for building materials is any of sidewalk blocks, bricks, street tree protection plates, interior and exterior building materials, and artificial reefs. It is characterized as a molding device for manufacturing one.

That is, the molding device 500 for the desired building material is prepared, the mortarized raw material of the present invention is added thereto, and then pressure molding is performed.

As shown in the drawing, according to the molding device 500 for building materials, bricks using oyster shells, oyster shell interior materials, oyster shell sidewalk blocks with stone dust added as mixed aggregate, and oyster shell sidewalk blocks with red clay added as mixed aggregate are manufactured. can do.

The drying step (S140) is a step in which the pressure-molded building material is put into the drying device 600 and dried at 40 to 70°C.

After going through the above steps, the manufacturing process of bricks among building materials is schematically shown as shown in Figure 3.

For example, when drying in the drying device 600 at a temperature of 40°C to 70°C, it is preferable to dry for about 2 to 4 hours. Additionally, as a drying process for systematic product production, natural drying is possible depending on the weather.

Meanwhile, Figure 4 shows a second embodiment of a method (S200) for manufacturing concrete blocks using oyster shells and slag.

Elements that perform the same function as those in the previously shown drawings are denoted by the same reference numerals.

Referring to the drawing, the method for manufacturing concrete using oyster shells and slag (S200) of the second embodiment includes the steps of heat-treating oyster shells at a predetermined temperature to produce pulverized oyster shells (20), including a washing and drying process (S210). The pretreatment step (S210) includes a crushing process (S220) and an oyster shell processing process (S213).

The washing and drying process (S211) is a process of obtaining the collected oyster shells and putting them into the washing device 200 to wash the oyster shells with water to remove salt and contaminants. At this time, a separate washing device 200 may be provided.

The crushing process (S212) is to input the oyster shell processed in the washing and drying step (S211) into the crusher 300 so that the oyster shell can be crushed and then fed into the firing device 700 in the oyster shell processing process (S213) described later. It is a process of crushing the shell.

In the oyster shell processing process (S213), the oyster shells that have completed the crushing process (S212) are placed in a predetermined device (700), heated and dried at 700 to 900 ° C. for 24 hours, and the dried oyster shells are crushed using a jaw crusher (JAW Crusher). , This is a process of obtaining crushed oyster shells (20) with an assembly ratio of 2.1 to 2.7 by passing them through a 5 mm sieve.

The reason for pulverizing oyster shells as described above is to save stirring time by pulverizing them in advance in order to improve stirring efficiency during stirring in the stirrer 400 in the forming step.

The manufacturing method (S200) of a concrete block using oyster shells and slag of the second embodiment described above can process the crushed oyster shell material (20) according to the required quantity by a predetermined device (700), so it can be used in other processes using photosynthetic microorganisms. It has the advantage of being able to shorten the work time compared to .

Meanwhile, Figure 5 shows an example of an artificial marine block using a method of manufacturing a concrete block using oyster shells and slag.

Here, the artificial block 10 includes intercoking blocks, parking lot blocks, revetment and retaining wall blocks, artificial reefs, and tetrapods (TTP), and may be configured in various forms without being limited to those shown in the drawing.

The description of the presented embodiments is provided to enable any person skilled in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not limited to the embodiments presented herein, but is to be construed in the broadest scope consistent with the principles and novel features presented herein.

10: Artificial block 20: Crushed oyster shell
100: Microbial reaction device 200: Washing device
300: Grinder 400: Stirrer
500: Molding device 600: Drying device
700: Firing device
S100, S200: Manufacturing method of concrete blocks using oyster shells and slag
S110, S210: Pre-processing step S111, S213: Oyster shell processing process
S112, S211: Washing and drying process S113, S211: Grinding process
S120: Mixing step S121: Cement preparation process
S122: Hardener preparation process S123: Aggregate preparation process
S124: Dye preparation process S130: Forming stage
S140: Drying step

Claims (9)

Preprocessing step of preparing crushed oyster shells;
A mixing step of preparing mortaring raw materials by mixing the crushed oyster shell and cement using a stirrer;
A molding step of putting the mortarized raw materials into a molding device for building materials to create a building material pressurized and molded at a preset pressure;
Characterized in that it includes a drying step of putting the building materials into a drying device and drying them at a predetermined temperature.
Concrete block manufacturing method using oyster shells and slag. According to paragraph 1,
The preprocessing step is
An oyster shell processing process of spraying photosynthetic microorganisms on the oyster shells;
A washing and drying process of putting the oyster shells that have undergone the oyster shell processing process into a washing device, washing the oyster shells with water, and drying them at room temperature;
A grinding process of preparing crushed oyster shells by putting the oyster shells treated in the washing and drying step into a grinder,
Concrete block manufacturing method using oyster shells and slag. According to paragraph 1,
The preprocessing step is
A washing and drying process in which collected oyster shells are placed in a washing device and washed with water;
A grinding process in which the oyster shells that have undergone the washing and drying process are put into a grinder and crushed;
An oyster shell processing process in which the oyster shells that have completed the grinding process are placed in a predetermined device, heated and dried at 700 to 900° C. for 24 hours, and then pulverized to produce crushed oyster shells.
Concrete block manufacturing method using oyster shells and slag. According to paragraph 2 or 3,
The crushed oyster shell is passed through a screen with a diameter of 5 mm and has an assembly ratio of 2.1 to 2.7.
Concrete block manufacturing method using oyster shells and slag. According to paragraph 1,
The mixing step is
For 10 parts by weight of cement, 3 to 4 parts by weight of CaO, 2 to 3 parts by weight of SiO2, 1 to 2 parts by weight of Al2O3, 0.1 to 0.5 parts by weight of SO3, 0.1 to 0.5 parts by weight of MgO, and 0.1 to 0.6 parts by weight of Fe2O3 are added to the stirrer. Characterized in that it includes a cement preparation process,
Concrete block manufacturing method using oyster shells and slag. According to clause 5,
The mixing step is
A polymer mixture consisting of 50 to 60 parts by weight of Ethylene-Vinyl Acetate Emulsion, 20 to 30 parts by weight of Acrylate polymer Emulsion, and 5 to 10 parts by weight of synthetic rubber latex and water. Characterized in that it includes a curing agent preparation process of adding a polymer liquid curing agent diluted at a weight ratio of 1:4 into a stirrer,
Concrete block manufacturing method using oyster shells and slag. According to clause 6,
The mixing step is
For 10 parts by weight of cement, 5 to 50 parts by weight of stone dust, 30 to 60 parts by weight of ferronickel slag, and 10 to 25 parts by weight of crushed oyster shells that have undergone the above pretreatment step, masato, stone dust, kaolin, red clay, natural pozzolan, and illite. Characterized in that it comprises an aggregate preparation process of mixing at least one of perlite and elvanite and adding it to a stirrer to obtain mortaring raw materials,
Concrete block manufacturing method using oyster shells and slag. According to paragraph 1,
The drying step is
Characterized in that the pressure-molded building material is dried in the drying device at 40 to 70 ° C. for 2 to 4 hours,
Concrete block manufacturing method using oyster shells and slag. According to clause 8,
Characterized in that an artificial marine block of a preset shape is formed using the concrete block manufacturing method using the oyster shell and slag,
Concrete artificial block using oyster shells and slag.

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