KR101809170B1 - Block composition using soil of tidal field and shell and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a block composition using soil of tidal fields and shells, and a manufacturing method thereof and, more specifically, to a block composition using soil of tidal fields and shells, which is environment friendly by comprising soil of tidal fields and shells, can reduce the amount of aggregate such as sand or gravel used and acts as a vegetation block. The block composition using soil of tidal fields and shells is manufactured by adding an inorganic binder, a soil hardener, etc. to soil of tidal fields and shells such as waste oyster shells, thereby having excellent structural strength, minimizing environmental destruction according to collection aggregate and being suitable for an aquatic ecosystem.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to block compositions using tidal flats and shells,

The present invention relates to a block composition using tidal flats and shells, and more particularly, to a method for producing a block composition using tidal flats and shells, The present invention relates to a block composition using tidal flats and shells and to a method for producing the same.

Generally, a revetment is installed to protect the river (river), coast (coast) and dam, and to prevent erosion of the water line by the water. In order to construct the revetment, the four-way construction is essential. This is the construction of foundation block and shore block of stone or concrete on river bank.

It is installed on the road surface, the bank, the river side, the shore side and other various slopes so that the slope maintenance and the slope surface soil and stones can prevent the loss, erosion and collapse while protecting the ecosystem by planting grass and other plants. To be close to nature.

However, a general foundation block or a shore block installed in the shore is made of concrete made of clay, aggregate such as sand and gravel. Because of the characteristics of the concrete showing the strong alkalinity of these concrete blocks, it is difficult to grow aquatic plants and algae at the initial stage of installation, the affinity of fishes, aquatic plants and algae is low and whitening phenomenon occurs , But it has a problem that it can act as a factor for devastating underwater or underwater ecosystems.

Also, in the production of concrete blocks, the area and resources for collecting the aggregates are limited, and there is a problem that the ecosystem is destroyed as well as the environmental pollution in the process of collecting the aggregate.

Accordingly, a block suitable for an aquatic ecosystem and surrounding environment is required because it has affinity for algae, aquatic plants and fishes.

Korean Utility Model Registration No. 20-0436222, which is registered in the Republic of Korea, has a vegetation hall block having a vegetation space where plants can grow. However, such a vegetation block is structurally vulnerable to wave or external impact due to the vegetation space.

On the other hand, the large amount of oyster shells produced in the coastal aquaculture not only cause pollution of the coastal fishing ground while reclaiming the common water surface on the coast, but also cause environmental problems such as smell and damage to the natural landscape.

Therefore, it is urgent to study the recycling of oyster shell, which is a marine fish waste, in consideration of the environmental problems caused by the oyster shells generated and the reality of recycling.

The chemical composition of the oyster shell is composed of calcium carbonate (CaCO ₃ ) of 95% or more, and consists of inorganic substances such as SiO ₂ , MgO and Na ₂ O. Oyster shells have irregular surface area and wide specific surface area, so they have excellent physical properties for adsorption to chemical substances. In addition, since oyster shells are obtained from living organisms, they have a high affinity with microorganisms, so it is easy for microorganisms to form biofilms in oyster shells. Using the physicochemical properties of these oyster shells, oyster shells can be utilized not only as recycled materials for fertilizers and feedstuffs, but also as materials for environmental purification related to environmental problems.

As disclosed in Korean Patent Laid-Open Publication No. 10-2015-0080890, in order to reduce the amount of aggregate such as sand or gravel, a block manufacturing method in which an oyster shell is applied in block manufacture has been applied. However, the use of shells, sand, gravel and clay is still high.

Accordingly, there is a need for a method that can maintain the structural strength while reducing the amount of aggregate such as sand or gravel in an environmentally friendly and natural state.

Korean Utility Model Registration No. 20-0436222: Korean Patent Laid-Open Publication No. 10-2015-0080890: A method for manufacturing a soilless cement block containing loess, oyster shell and foamed glass

The present invention has been made to overcome the above-mentioned problems, and it is an object of the present invention to provide a honeycomb structure which is excellent in structural strength, It is an object of the present invention to provide a block composition using tidal soil and shell suitable for an aquatic ecosystem and minimizing environmental destruction and a method for manufacturing the same.

In order to achieve the above object, the present invention provides a tidal flat soil and shell composition comprising 60 parts by weight of shell powder, 10-20 parts by weight of seaweed powder, 10-20 parts of wood powder, 10 to 20 parts by weight of a fish bone powder, 0.025 to 10 parts by weight of a pH adjusting agent, 0.01 to 0.15 parts by weight of a heavy metal elution inhibitor, 0.01 to 0.05 parts by weight of a malodor removing agent, 5 to 10 parts by weight of a solidifying agent, To 35 parts by weight of a soil curing agent and 5 to 15 parts by weight of a soil curing agent are mixed.

And 30 to 80 parts by weight of waste iron pieces per 100 parts by weight of the tidal-flat soil is further mixed.

10 to 30 parts by weight of a buoyant member for providing buoyancy per 100 parts by weight of the tidal-flat soil is further mixed. The buoyancy member is formed of a synthetic resin material and formed into a polygonal shape having an internal space capable of providing buoyancy, At least one lead-in groove drawn in the direction of the arrow.

The seaweed powder is a mixed powder containing at least one selected from the group consisting of green algae, brown algae and red algae, and the wood powder includes at least one selected from natural wood, synthetic wood, recycled pulp, wood product, .

The method of producing the block composition using the tidal flat soil and shell of the present invention comprises 60 parts by weight of shell powder, 10-20 parts by weight of seaweed powder, 10-20 parts of wood powder, 10-15 parts of bone powder 10 , 0.01 to 0.15 parts by weight of a heavy metal elusion inhibitor, 0.01 to 0.05 parts by weight of a malodor removing agent, 5 to 10 parts by weight of a solidifying agent and 5 to 35 parts by weight of an inorganic binder And 5 to 15 parts by weight of a soil curing agent; A compression molding and surface treatment step of producing a block composition by extruding the mixture through the mixture preparation step and surface-treating the resulting block composition; And a curing step of curing the block composition after the compression molding and the surface treatment step for 3 days.

The block composition using the tidal-flat soil and shell of the present invention and its preparation method are produced by adding an inorganic binder and a soil hardener to shells such as tidal flat soil and oyster shells to be discarded, Minimize and have an advantage for an underwater ecosystem.

In addition, the block composition using the tidal-flat soil and shell of the present invention is advantageous in that it has a load capable of preventing loss or flow from a structure such as a reef due to strong waves or external impact due to mixing of waste iron pieces.

In addition, since the block composition using the tidal-flat soil and shell of the present invention is mixed with the buoyancy member, there is an advantage that a certain height can be maintained by the buoyancy of the buoyancy member even in the soft ground.

Hereinafter, a block composition using the tidal-flat soil and shell according to a preferred embodiment of the present invention and a method for producing the same will be described in detail.

According to one embodiment of the present invention, the block composition using tidal flats and shells contains tidal flour, shell powder, seaweed powder, wood flour, and bone powder. Preferably, 60 parts by weight of shell powder, 10-20 parts by weight of seaweed powder, 10-20 parts by weight of wood powder and 10-20 parts by weight of bone powder are blended with 100 parts by weight of tidal flats.

The tidal flats are home to 687 species of plants, including phytoplankton, and 47% of the world's most endangered waterbirds are used as major habitats, with germanium and numerous microorganisms. Therefore, the tidal flats are a substitute material that can reduce the amount of natural aggregates such as sand and gravel, and provide a condition for microorganisms and aquatic plants to be inhabited in the block composition according to the present invention together with shell powder, wood flour, can do.

And, the use of the shell is to utilize the characteristic of being capable of recycling the discarded shell and having excellent adsorption ability.

The tidal flats were prepared by pulverizing the tidal flat soil collected from the tidal flats so as to be easily mixed with shell powder and seaweed powder. The tidal flats were dried to remove the moisture of the tidal flat soil and then pulverized to a particle size of 50 to 200 μm. It is preferable that the foreign matters are removed by filtering with a sieve of 100 mesh.

The shell powder contains 60 parts by weight per 100 parts by weight of the tidal flour powder. It is preferable that the shell powder is pulverized with a particle size of 50 to 200 탆 and filtered with a sieve of 50 to 100 mesh. For shell powder, wet and dry ball mills may be used. At this time, the shell is a shell of various shellfish such as oysters, cockles, and scallops, and the contents are removed for recycling and discarded.

The seaweed powder is obtained by drying green algae, brown algae, red algae or at least one seaweed selected therefrom and pulverizing them. The seaweed powder can be well grown by microorganisms and provides a condition in which aquatic plants can be inhabited while the shrinkage is large during drying and curing of the block composition according to the present invention, prevent.

In addition, seaweed powder can promote the bonding of the constituent components of the block composition, prevent cracking, and provide uniform permeability to the block composition.

Seaweeds used as seaweed powder can be selected from green algae such as Rhododendron, Chrysanthemum, Rhizoma, Paralysis, Auditory, Bead, Auditory, Red sea bream, red sea bream, red sea bream, red sea bream, red sea bream, red sea bream, kotoni, dog shrimp, chestnut bark, codfish and the like can be used.

The following method can be applied to the process of producing seaweed powder. The seaweed powder is prepared by washing the seaweeds with purified water, drying the washed seaweeds for 8 to 9 hours, drying the dried seaweeds with the solvents at 40 to 90 ° C for 4 to 5 hours, A hot air drying step in which the produced extract is subjected to hot air drying for 8 to 9 hours, and a powder step in which the dried seaweed is pulverized to 50 to 100 mesh.

Wood flour is powdered, including one or more selected from natural wood, synthetic wood, waste wood, recycled pulp, wood products, non-wood fibers and reeds, and provides an environment in which aquatic plants grow well together with seaweed powder.

The bone powder is powdered fish bone or animal bone, and calcium (Ca) and phosphorus (P) are contained in the bone powder, so that the structural strength of the block composition according to the present invention can be increased. Bone powder can be used as pulverized pig bone, bovine bone, or fish bone from fish after slaughter.

pH adjusting agent is phosphoric acid (H3PO4), superphosphate _{(Ca (H 2 PO 4)} 2 H 2 O) , and during and phosphate of lime _{(CaH 4 (PO 4) 2} · H 2 O), ferrous sulfate (FeSO ₄ · H ₂ O & FeSO ₄ .7H ₂ O) and ferric sulfate (Fe ₂ SO ₄₎ , and 0.025 to 10 parts by weight per 100 parts by weight of tidal flats are used. Phosphoric acid is a kind of oxygen acid, which is widely used inorganic acid such as chemical fertilizer, food industry, phosphate production, semiconductor and LCD (Liquid Crystal Display) etching solution, and has the deliquescence that dissolves in water hygroscopicity. Supersaturated lime is mixed with calcium hydrogen phosphate and calcium sulfate And is prepared by reacting phosphoric acid powder with sulfuric acid as shown in the following chemical reaction formula.

Ca ₃ (PO ₄ ) ₂ + 2H ₂ SO ₄ + 5H ₂ O? Ca (H ₂ PO ₄ ) ₂ .H ₂ O + 2 (CaSO ₄ .2H ₂ O)

It is an acidic fertilizer containing a lot of calcium superphosphate. It is well soluble in water and has a large fertilizer effect. Phosphoric acid content is usually over 20% and the remainder is composed of 60% gypsum byproduct. The heavy and phosphoric acid lime is more than 40% of the soluble phosphoric acid and it is the phosphoric acid fertilizer that the phosphoric acid is converted into the water soluble phosphate by the phosphoric acid treatment as the following chemical reaction formula.

3Ca ₃ (PO ₄ ) 2 .CaF ₂ + 14H ₃ PO ₄ + 10H ₂ O → 10 (Ca (H ₂ PO ₄ ) ₂ .H ₂ O) + 2HF

Phosphorus species, when mixed with lime and alkaline substances such as aluminum oxide (Al ₂ O ₃ ) contained in tidal flats, produce and precipitate insoluble phosphate, and have an effect of effectively fixing copper and lead in heavy metals. In addition, it is insolubilized by reacting with harmful active aluminum ions ((Al ³⁺ )), such as causing the tongue of phosphate-deficient soil.

[Mechanism of Reaction with Aluminum]

_{Al 2 O 3 + 2Ca (H} 2 PO 4) 2 = 2AlPO 4 + 2CaHPO 4 + 3H 2 O

Al ₂ O ₃ + 2H ₂ PO ₄ = 2AlPO ₄ + 3H ₂ O

Ferrous sulfate (FeSO ₄ ), also known as tannin (綠 礬), is known as anhydrides as well as 1, 4, 5, and 7 hydrates. 7-hydrate (FeSO ₄ 7H ₂ O) is the most common and important among the divalent iron sulphate. Ferric sulfate (Fe ₂ (SO ₄ ) ₃ ) is known to contain anhydrides as well as 3, 6, 7, 7.5, 9, 10 and 12 hydrates. Ferric sulfate (Fe ₂ (SO ₄ ) ₃ ) is a white or pale yellow powder with a specific gravity of 3.097 and is decomposable. When heated, it decomposes at about 480 ° C to become iron oxide. Ferric sulfate (Fe ₂ (SO ₄ ) ₃ ) is slightly soluble in water, but the solution is brown as a result of hydrolysis. When heated, a reddish brown precipitate of basic iron sulfate or iron hydroxide occurs. It is naturally produced as codobite, kenstedite and cornelite. The hydrate is crystallized by oxidizing the aqueous solution of iron sulfate and concentrating it by evaporation. The number of water molecules contained depends on the crystallization conditions. Hydrates are easy to make double salts and are used for the production of iron lacquers and mordants and react with potassium hexacyano ferric oxide to make prussian blue.

The heavy metal leaching inhibitor is mainly composed of Na3T free from the ecotoxicity problem, and 0.01 to 0.15 parts by weight is used in 100 parts by weight of the wetland soil. In the Na3T aqueous solution, the heavy metal is precipitated as a metal-Na3T compound through the following reaction. Analysis of the components of these compounds by elemental analysis showed that the Na3T molecule binds with 3 equivalents of heavy metals.

[Reaction Mechanism]

Monovalent ^{metal: 3Me + + Na3T 3 - →} Me 3 Na3T (Extremely low solubility)

Divalent ^{metal: 3Me 2 + + 2Na3T 3 -} → Me 3 (Na3T) 2 (Extremely low solubility)

Where Me ⁺ , Me ^{2 +} = heavy metals

Na ₃ T ^{3 -} = C ₃ N ₃ S ₃ ^{3 -}

The thiol group at the terminal of trimercapto-S-triazine reacts with heavy metals to form a kyrate, a polymer organic metal complex to stabilize heavy metals. Other diethyldithiocarbamate (LC50 value: 20) and sodium trithiocarbonate (LC50 value: 7.5), which have other thiol groups, are environmentally friendly products with strong ecotoxicity On the other hand, Na3T-15 has almost the non-toxic characteristics of more than 4,000 ppm of the ecotoxicity value. In addition, it exists as a three-dimensional network structure with a macromolecular effect and does not cause secondary pollution problems such as re-leaching. Since it reacts with three equivalents of heavy metals, it has excellent removal efficiency of heavy metals and does not separate hydrogen sulfide (H ₂ S) And are present as metal-organic compounds rather than metallic sulfides.

5 to 10 parts by weight of calcined dolomite calcined at 750 to 1,000 ° C. per 100 parts by weight of the tidal-flat powder or 5 to 10 parts by weight of a mixed additive obtained by mixing calcined dolomite and burnt lime calcined at 900 to 1,100 ° C. in a ratio of 2: 1 do. Calcined dolomite is a dolomite which is a carbonate mineral slaked at 900 to 1,000 ° C. and contains 32 to 35% by weight of magnesium oxide (MgO) and 50 to 55% by weight of calcium oxide (CaO) among the whole constituents of calcined dolomite, It can be used as a useful substitute for costly quicklime and serves as a source of calcium ions needed for pozzolanic reactions.

The malodor removing agent is 35-50 wt% of potassium monopersulfate (KHSO ₅ ), 15-30 wt% of potassium hydrogensulfate (KHSO ₄ ), potassium sulfate. 20 to 40% by weight of potassium sulfate (K ₂ SO ₄ ), and 0.5 to 5% by weight of an acid catalyst are mixed in an amount of 0.01 to 0.05 part by weight per 100 parts by weight of the tidal flats. These multiple salts are particularly excellent for complex odor elimination, and the components contained in the plural salts can generate SO ^4- radicals having strong oxidizing power by heat, light and metal in addition to heat. Therefore, Decomposable organics, complex odors or substances contaminated with hydrophobic solvents can be decomposed.

The inorganic binder includes 50 to 100 parts by weight of blast furnace slag fine powder, 10 to 50 parts by weight of fly ash, 5 to 25 parts by weight of natural anhydrous gypsum, 5 to 25 parts by weight of lime fine powder, 5 to 10 parts by weight of silica fume, 5 to 10 parts by weight of CSA (Calcium Sulfur Aluminate) based expanding agent and 0.05 to 0.1 part by weight of a fiber reinforcing material are uniformly mixed, and 5 to 35 parts by weight of 100 parts by weight of tidal flats are mixed. Fiber reinforcements consist of glass fiber, carbon fiber, aramid fiber, polypropylene fiber, nylon, and polyester. The inorganic binder of the present invention has an early strength, a higher compressive strength and a higher bending strength and a faster hardness than that of ordinary cement alone, and thus effectively coagulates and solidifies tidal flats and shell powder which are difficult to be coagulated and stabilized by general cement alone .

The soil curing agent may be selected from the group consisting of 5-15 parts by weight of sodium chloride per 100 parts by weight of pure water, 10-20 parts by weight of potassium chloride, 5-15 parts by weight of magnesium chloride, 10-20 parts by weight of calcium chloride, 2-8 parts by weight of ammonium chloride, 1 to 6 parts by weight of sodium magnesium aluminate, 2 to 8 parts by weight of sodium aluminate, 5 to 20 parts by weight of sodium silicate, 5 to 15 parts by weight of sodium sulfate, 1 to 10 parts by weight of sodium alginate, 0.1 to 2 parts by weight of methyl cellulose 1 to 6 parts by weight of one of lignin sulfonate and nattalene sulfonate or polycarboxylate, and 5 to 15 parts by weight per 100 parts by weight of tidal flats. The use of a soil hardening agent further enhances the strength of the inorganic bar interlayer, thereby increasing the elasticity, strength and density of the hardened block product, and enhancing weather resistance and durability.

A method for producing a block composition using the tidal flat soil and shell according to an embodiment of the present invention is as follows.

The method of producing the block composition using the tidal-flat soil and the shell may be a method of preparing the block composition by mixing all or a part of the tidal flour, shell powder, seaweed powder, wood powder, bone powder, heavy metal elution inhibitor, solidifying agent, solidifying aid, odor remover, A compression molding and a surface treatment step of producing a block composition by extruding a mixture through a mixture preparation step and surface-treating the resulting block composition, and a block composition And a curing step of curing.

10 parts by weight of powder of seaweed powder, 10 to 20 parts by weight of wood powder, 10 to 20 parts by weight of bone powder, 0.025 to 10 parts by weight of pH adjuster A second mixing step of mixing the first mixture with 0.01 to 0.15 part by weight of a heavy metal elution inhibitor to form a second mixture, and a second mixing step of adding the solidifying agent 5 to 10 A fourth mixing step of mixing 0.01 to 0.05 part by weight of a malodor removing agent into the third mixture to produce a fourth mixture; and a fourth mixing step of mixing inorganic binders 5 to 35 And 5 to 15 parts by weight of a soil curing agent to form a fifth mixture.

Also, before the first mixing step, the tidal flats producing step, the shell powder producing step and the seaweed powder producing step may be included in the order described. The tidal flats are dried to remove water from the tidal flats, pulverized to a particle size of 50 to 200 μm, and then sifted into 50 to 100 mesh sieves. The shell powder is prepared by pulverizing the shell at a particle size of 50 to 200 μm and then preparing a shell powder of 50 to 100 mesh sieved.

The step of preparing the seaweed powder is a step of pulverizing the seaweeds, wherein the step of washing the seaweeds with purified water before the first mixing step, the drying step of drying the washed seaweeds for 8 to 9 hours, Extracting the extract at 90 ° C for 4 to 5 hours and then concentrating the extract under reduced pressure to obtain an extract; a hot air drying step of drying the produced extract by hot air drying for 8 to 9 hours; and a powder step of pulverizing the dried seaweed to 50 to 100 mesh.

The block composition using the tidal flats and shells according to an embodiment of the present invention and the manufacturing method thereof can be produced by adding inorganic binders and soil hardening agents to shells such as tidal flat soil and oyster shells to be discarded, It is possible to prevent the destruction of environment due to the collection of aggregate and there is an advantage of being friendly to aquatic ecosystem.

Meanwhile, the block composition according to another embodiment of the present invention is further characterized in that a waste material having a high weight is further mixed so as not to flow into a strong wave or an external impact, or to be lost from a shore or an underwater structure.

The block composition according to another embodiment of the present invention contains tidal flats, shell powder, seaweed powder, wood flour, bone powder, and waste iron pieces. The block composition according to another embodiment of the present invention preferably comprises 60 parts by weight of shell powder, 10-20 parts by weight of seaweed powder, 10-20 parts by weight of wood powder, 10-20 parts by weight of bone powder, , And 30 to 80 parts by weight of waste iron pieces are mixed.

The method for producing the block composition using the tidal-flat soil and the shell according to another embodiment of the present invention is the same as the method for producing the block composition using the tidal-flat soil and shell according to the embodiment of the present invention, And 30 to 80 parts by weight of waste iron pieces per 100 parts by weight of the waste iron piece.

30 to 80 parts by weight per 100 parts by weight of the tidal flats are mixed with other components in the preparation of the mixture to increase the total load of the block composition. The waste iron piece refers to a piece of scrap iron which may be generated at the steelworks or at the time of demolishing an architectural structure, and is not limited to shape, shape and number. It is preferable that the waste iron pieces are mixed with the components of the block composition so as to be positioned therein so as to prevent corrosion of the block composition.

As the waste iron pieces are mixed, the block composition according to another embodiment of the present invention has a high load and can withstand waves, waves or external impacts, thereby enhancing the durability of a waterproofing or an underwater structure.

Meanwhile, the block composition using the tidal flat soil and shell according to another embodiment of the present invention contains tidal flats, shell powder, seaweed powder, wood powder, bone powder, and buoyancy member. Preferably, the block composition according to another embodiment of the present invention comprises 60 parts by weight of shell powder, 10-20 parts by weight of seaweed powder, 10-20 parts by weight of wood powder, 10-20 parts by weight of bone powder, 10 to 30 parts by weight of a buoyancy member providing buoyancy is mixed instead of the waste iron piece.

In the method of manufacturing the block composition using the tidal-flat soil and shell according to an embodiment of the present invention, in the method of manufacturing the block composition using the tidal-flat soil and shell according to another embodiment of the present invention, And 10 to 30 parts by weight of the buoyant member per 100 parts by weight of the soil.

The buoyancy member provides a predetermined buoyancy to the block composition according to another embodiment of the present invention so that even if the ground is settled on the soft ground, the block composition can be fixed at a predetermined depth in the water without sinking with the ground do.

The buoyancy member is formed of a synthetic resin material and formed into a polygonal shape having an internal space capable of providing buoyancy. The buoyancy member is preferably made of a triangular, square or polygonal shape in which corners are formed so as to be more easily fixed in position within the constituents of the block composition

Although not shown, the buoyancy member is mixed with the constituents of the block composition so that at least one inlet groove is formed on the outer circumferential surface in the inward direction to facilitate positioning. The constituent components of the block composition are mixed with each other and are partially cured in the inlet grooves of the buoyancy member, so that the binding force with the buoyancy member can be increased.

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to the following examples.

(Example 1)

A first mixture is prepared by mixing 100 parts by weight of tidal flats, 10-20 parts by weight of seaweed powder, 10-20 parts by weight of wood powder, 10-20 parts by weight of bone powder and 5 parts by weight of ferric sulfate in a pH adjuster, And 0.03 parts by weight of a heavy metal elution inhibitor are mixed to prepare a second mixture. The second mixture is mixed with 8 parts by weight of calcined dolomite, which is a solidifying agent, to form a third mixture, and 0.03 part by weight of the odor eliminator is mixed with the third mixture to form a fourth mixture. Then, 30 parts by weight of an inorganic binder and 5 parts by weight of a soil curing agent were mixed and mixed with the fourth mixture, followed by compression and molding with a block molding machine, followed by wet curing for 3 days, to prepare a rectangular solid block.

(Example 2)

A first mixture is prepared by mixing 100 parts by weight of tidal flats, 10-20 parts by weight of seaweed powder, 10-20 parts by weight of wood powder, 10-20 parts by weight of bone powder and 5 parts by weight of ferric sulfate in a pH adjuster, And 0.03 parts by weight of a heavy metal elution inhibitor are mixed to prepare a second mixture. The second mixture is mixed with 8 parts by weight of calcined dolomite, which is a solidifying agent, to form a third mixture, and 0.03 part by weight of the odor eliminator is mixed with the third mixture to form a fourth mixture. Then, 30 parts by weight of waste iron pieces are mixed with the fourth mixture to prepare a fifth mixture. Finally, 30 parts by weight of the inorganic binder and 5 parts by weight of the soil hardener are mixed in the fifth mixture. At this time, the waste iron pieces were mixed so as to be located inside, compressed and molded with a block molding machine, and wet-cured for 3 days, to prepare a rectangular solid block.

(Example 3)

A first mixture is prepared by mixing 100 parts by weight of tidal flats, 10-20 parts by weight of seaweed powder, 10-20 parts by weight of wood powder, 10-20 parts by weight of bone powder and 5 parts by weight of ferric sulfate in a pH adjuster, And 0.03 parts by weight of a heavy metal elution inhibitor are mixed to prepare a second mixture. The second mixture is mixed with 8 parts by weight of calcined dolomite, which is a solidifying agent, to form a third mixture, and 0.03 part by weight of the odor eliminator is mixed with the third mixture to form a fourth mixture. Then, 20 parts by weight of the buoyancy member is mixed with the fourth mixture to make a fifth mixture. Finally, 30 parts by weight of the inorganic binder and 5 parts by weight of the soil hardener are mixed in the fifth mixture. At this time, the buoyancy member was mixed so that the buoyancy member was located inside, then compressed and formed with a block molding machine, wetted and cured for 3 days, and then a rectangular solidified block was manufactured.

The buoyancy member is formed as a rectangular parallelepiped surrounded by six squares, and a cross-shaped recessed groove is formed on the upper surface and the lower surface, respectively. The lead-in grooves extend to the sides of the buoyancy member and are interconnected.

The block composition using the tidal flat soil and shell in Example 1 was not required to collect any aggregate and the amount of microbial and algae habitat distribution was higher than that of the concrete block composition containing aggregate and cement.

The block composition in Example 2 provides an environment in which microorganisms and aquatic plants are easy to habitat as in Example 1, and is higher than the load of the block composition of Example 1 by the waste iron pieces.

The block composition in Example 3 provides an environment in which microorganisms and aquatic plants are easy to live as in Example 1, and a buoyant force is provided by the buoyancy member.

The block composition using the tidal-flat soil and shell according to the present invention and the preparation method thereof can be produced by adding inorganic binders and soil hardening agents to shells such as tidal flat soil and disused oyster shells, Minimizes environmental destruction and has an advantage for an aquatic ecosystem.

In addition, the block composition using the tidal-flat soil and shell according to the present invention is advantageous in that it has a load capable of preventing loss or flow from a structure such as a reef due to strong waves or external impact due to mixing of waste iron pieces.

In addition, the block composition using the tidal-flat soil and shell according to the present invention has an advantage that a certain height can be maintained by the buoyancy of the buoyancy member even in the soft ground due to the mixing of the buoyancy member.

As described above, the block composition using the tidal-flat soil and shell according to the present invention and the method for producing the block composition have been described with reference to the example shown in the drawings, but this is merely an illustrative example. It will be appreciated that many variations and equivalent embodiments are possible. Therefore, the scope of the true technical protection of the present invention should be determined by the technical idea of the appended claims.

Claims (6)

10 to 20 parts by weight of seaweed powder, 10 to 20 parts by weight of wood powder, 10 to 20 parts by weight of bone powder, 0.025 to 10 parts by weight of a pH adjusting agent, 0.01 to 0.15 parts by weight of an elution inhibitor, 0.01 to 0.05 parts by weight of a malodor removing agent, 5 to 10 parts by weight of a solidifying agent, 5 to 35 parts by weight of an inorganic binder, 5 to 15 parts by weight of a soil hardening agent, Weight parts are mixed,
The buoyancy member
The block composition being formed of a synthetic resin material and formed in a polygonal shape having an internal space capable of providing buoyancy and having at least one recessed portion drawn inward in an outer peripheral surface thereof. The method according to claim 1,
And 30 to 80 parts by weight of waste iron pieces per 100 parts by weight of the tidal flats are further mixed and blended. delete 60 parts by weight of shell powder, 10-20 parts by weight of seaweed powder, 10-20 parts by weight of wood powder, 10-20 parts by weight of bone powder and 0.025-10 parts by weight of pH adjuster were mixed with 100 parts by weight of tidal flats, A second mixing step of mixing 0.01 to 0.15 part by weight of a heavy metal elution inhibitor into the first mixture to form a second mixture, and 5 to 10 parts by weight of a solidifying agent in the second mixture, A fourth mixing step of mixing the third mixture with 0.01 to 0.05 parts by weight of a malodor removing agent to form a fourth mixture; and 5 to 35 parts by weight of an inorganic binder in the fourth mixture, And 5 to 15 parts by weight of a soil curing agent to form a fifth mixture;
A compression molding and surface treatment step of extruding the mixed mixture in the mixture preparation step to produce a block composition and surface-treating the block composition;
A curing step of curing the block composition after the compression molding and the surface treatment step for 3 days;
And a buoyant member mixing step of mixing 10 to 30 parts by weight of the buoyant member per 100 parts by weight of the tidal flats after the fourth mixing step,
The buoyancy member
Characterized in that a polygonal shape is formed of a synthetic resin material and has an inner space capable of providing buoyancy and at least one inlet groove is formed on the outer peripheral surface in an inward direction to form a block composition using the tidal flat soil and shell Way. 5. The method of claim 4,
And mixing the waste iron pieces with 30 to 80 parts by weight of the waste iron pieces per 100 parts by weight of the tidal flats after the fourth mixing step. delete