KR20190036150A - Method for preparing of artificial fish bank using waste sunked ship - Google Patents

Abstract

The present invention relates to a manufacturing method for an artificial fish reef using a sunken waste ship. The method comprises: a step 1) of calculating a required filling capacity inside the hull by surveying a seabed sunken waste ship; a step 2) of manufacturing high-fluidity and low-fluidity anti-washout concrete; a step 3) of injecting the high-fluidity anti-washout concrete into the seabed sunken waste ship; and a step 4) of forming an unshaped artificial rock by placing the low-fluidity anti-washout concrete outside and around the seabed sunken waste ship. The present invention also relates to an artificial fish reef manufactured thereby. In addition, the manufacturing method is to detoxify a waste ship sunken in the sea for avoiding an oil spill, etc., thereby forming the waste ship into a fish reef and a sea ranch. In particular, the manufacturing method for an artificial fish reef using a sunken waste ship can seal, block, and detoxify surrounding areas of an engine and an oil storage tank of a waste ship, which are sunken and neglected due to a marine accident or the like, by injecting high-fluidity anti-washout concrete, can prevent an oil spill by placing low-fluidity anti-washout concrete in the outside and surrounding area of the hull in order to form an unshaped artificial rock and shield and seal the inside of the sunken waste ship, can prevent elution of harmful materials by covering steel materials outside the hull with concrete, and can make a very large artificial reef in the seabed at economically feasible costs.

Description

TECHNICAL FIELD [0001] The present invention relates to an artificial fish preparation method using a submerged lung vessel,

The present invention relates to a method for producing an artificial fish candle by making harmless a waste vessel sunk into the sea so as not to leak oil or the like and an artificial fish candle manufactured by the method, And the oil reservoir and the like are injected into the high-permeability underwater non-separating concrete to inject the unbonded concrete to block the seal and detoxify. ≪ / RTI >

Recently, the sinking of large ships has become a social issue, and the people's attention has been concentrated, and the salvage of vessels is still under way. However, it is estimated that the number of medium-sized sinking vessels in the sea, which are not so much of a social interest, or that the economic value of vessels is low compared to the cost of salvage, is estimated to be as high as 3,700. Such abandoned shipwrecks are environmentally unstable, such as oil spills, and fear that toxic substances will adversely affect marine ecosystems.

In Korea, the fisheries industry has been developing continuously, but the production of fishery products in the coastal waters has increased due to the reason that the management about the fishery growth can not cope with the catches due to recent fishery technology and equipment development, It is a reality that does not increase.

Recently, artificial fishery projects have been developed as a main plan for conservation of fishery resources in Korea. Since the artificial fishery facility plays a role of aquatic animals, plant spawning grounds and habitat, its importance is high and it has been evaluated as having many positive effects.

Most of the artificial fish is composed of natural stone, steel, waste tire, plastic, etc., but mostly made of cement concrete. It has been manufactured in various forms in order to increase the surface area in contact with sea water to improve efficiency.

However, conventional cement concrete artificial reefs are reinforced concrete reinforced with reinforcing bars, and they are not only resistant to erosion of sulfate contained in seawater as well as precipitate strong alkaline substances in seawater by using cement, which is a strong alkali substance, as a binder, Has been pointed out.

In order to solve these problems, a Korean patent (10-0780877) proposes a technique for manufacturing reed from low-grade iron ore as aggregate and unreinforced reinforced concrete. However, these technologies are limited in their ability to be used widely because they are subject to restrictions on the supply of low-grade iron ore aggregate, which is the raw material. In addition, since the binding material is cement, which is a strong alkali substance, it has a limitation that it is susceptible to precipitation of alkali materials and sulfate.

In addition, a Korean patent (10-0376546) proposed a technique of applying a quick-setting shotcrete on a car body using a waste automobile as a frame. This technique explains that the shotcrete coated on the body blocks the risk of seawater pollution due to the corrosion of the steel, which is a problem of the conventional method of storing the reinforced concrete and the pulsed ship. However, in order to give the quickest speed to the shotcrete The pacemaker used is a strong alkali and the binder cement is also a strong alkaline substance.

In addition, the techniques described above are limited in the size of the retroreflector and small in size to constitute a large ocean ranch or seabed mountain range.

Therefore, as a more fundamental countermeasure, it is easy to construct a large fishing reed, it does not cost much to produce fishing reed, it can prevent environmental pollution caused by corrosion of steel, and injects water-immiscible high- It is urgently required to develop a technique for constructing an indefinite artificial rock bed by shielding the engine room and the fuel storage tank of a wrecked ship, and installing a low-flow separation low-flow concrete composed of a binder having a low alkalinity outside and around the sinking hull.

In order to enhance the durability against seawater erosion of concrete, it is preferable to use a binder having sulfate resistance. There is a large amount of sulfates such as sodium, potassium, ammonium, magnesium and calcium in seawater or seawater. When these sulfates come into contact with portland cement, CaSO ₄ is first formed by the reaction of Ca (OH) ₂ and SO ² ₄ This reacts with the cement hydrate, alumina ginseng lime, to form cement-based bassylose, which leads to the erosion of cement. That is, the durability of the cement concrete deteriorates.

In order to prevent the erosion of the sulfate contained in this water and reduce the proportion of Portland cement in the Al ₂ O ₃ and CaSO ₄ so that the resistance to sulphate-containing liquid, Fe sulfate cement a lot regulate ₂ O ₃ ratio it is preferable to use sulfate resisting cement.

However, due to the special nature of the sulfate mortar portland cement (5 types), it is currently difficult to utilize the cement in small quantities in the market because it does not have a cement company selling it at a small scale since it is manufactured separately at home .

Recently, in the case of alkali activated slag, which is widely regarded as an environmentally friendly cement binder, it is a structure that exhibits strength by stimulating a fine powder of blast furnace slag, which is a potential hydraulic material, with an alkali and a sulfate. However, It is difficult to apply it to seabed concrete structures.

(Patent Document 0001) Korean Patent No. 10-0780877 (Nov. 23, 2007)

(Patent Document 0002) Korean Patent No. 10-0376546 (Mar.

SUMMARY OF THE INVENTION The present invention has been made to overcome the above-mentioned problems, and it is an object of the present invention to provide a cement paste which has low alkalinity of cement used for producing concrete reeds, It is manufactured by injecting insulated concrete in the high flowability underwater and injecting it into the hull such as the engine room and oil tank to shield and harm it. The low flow concrete is manufactured by simple composition correction outside the hull, And to provide a method for manufacturing an artificial fish using a submerged lung vessel.

Another object of the present invention is to provide an artificial fish weighing apparatus using a submerged lung vessel manufactured according to the above method.

In order to solve the above-mentioned technical problem, a method of harmonizing a sinking waste ship according to the present invention to make an artificial fish sauce

1) Investigating the submarine submergence abandonment to estimate the necessary volume to fill the hull;

2) producing high-flowability and low-flowability water-insoluble concrete;

3) injecting insoluble concrete in the high-flowability water into the submarine submerged arc; And

And 4) constructing the indefinite artificial rock by placing the low-fluidity insoluble concrete in the outside and the periphery of the submarining line.

According to an embodiment of the present invention, the highly flowable underwaterly insulated concrete is composed of 20 to 50 parts by weight of a low-alkali coal-fired fly ash having a calcium oxide content of less than 5% and a pH of 6 to 10, 1 to 20 parts by weight of a mixture of one or two selected from the group consisting of meta kaolin and silica fume having a pH in the range of 6 to 8, 0.1 to 4 parts by weight of an MC based thickening agent powder, 0.5 to 4 parts by weight of a fluidizing agent powder, 300 to 500 parts by weight of an aggregate having a grain size of ~ 20 mm and a fineness modulus of 3 to 5 and 40 to 100 parts by weight of sea water as a blending water.

According to an embodiment of the present invention, the low-flowability water-insoluble concrete is composed of 20 to 50 parts by weight of a low-alkali coal-fired fly ash having a calcium oxide content of less than 5% and a pH of 6 to 10, 1 to 20 parts by weight of a mixture of one or two selected from the group consisting of meta kaolin and silica fume having a pH in the range of 6 to 8, 0.1 to 4 parts by weight of an MC based thickener powder, a granulation ratio of 1 to 20 mm 300 to 500 parts by weight of an aggregate having a fineness modulus of 3 to 5 and 40 to 100 parts by weight of seawater as a blending water.

According to an embodiment of the present invention, in the high-flowability water-insoluble concrete in the step 3), the flow is 40 to 60 cm, and the low-flowability water-insoluble concrete in the step 4) has a slump of 4 to 12 cm .

Also, it is preferable that the cement used in the high-flowability and low-flowability water-insoluble concrete is any one or a mixture of two or more selected from the group consisting of five kinds of sulfate sludge portland cement, blast furnace slag cement and one kind ordinary portland cement .

In addition, the present invention provides an artificial fish sanitizer using a sinking line manufactured according to the above method.

According to the present invention, it is possible to seal and hermetically seal the inside of a hull such as an engine and a oil reservoir of a wrecked ship that has been left in a sink due to a marine accident or the like, It is possible to utilize an artificial earthenware as an eco-friendly artificial rock by constructing an irregularly shaped concrete rock.

Also, the concrete used is expected to show more resistance to sulphate erosion due to low alkalinity than conventional cement concrete.

Therefore, when this technology is applied, it is possible to prevent leakage of oil by shielding the inside of a sinking wreck ship which has been left aboard, and to prevent the dissolution of harmful substances by covering the steel material etc. outside the hull with concrete, Scale artificial fish can be produced at an economical cost.

Hereinafter, the construction method and the constituents of the concrete composition of the method of making the sinking waste ship detoxified to make artificial fish sludge according to the present invention will be described.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

The present invention relates to a method for forming an artificial fish chow by harmlessly submerging a sunken ship and an artificial fish prepared by the method.

A method for harmonizing a sinking waste ship according to the present invention to artificial fish sludge is as follows: 1) calculating a volume required to fill a high-fluid concrete in a ship by irradiating a sinking sludge; 2) producing high-flowability and low-flowability water-insoluble concrete; 3) Submerging undersea concrete by injecting insoluble concrete in the high-dynamic-water underwater into the inside of the underwater submerged ship hull; And 4) constructing the indefinite artificial rock mass by installing the low-flowability water-insoluble concrete outside and around the underwater submerged ship hull.

The first step is to calculate the required volume of high velocity concrete filling in the hull by investigating the sinking line. In this step, it is possible to utilize the existing data of the investigated sinking hull, or it may be necessary for the diver to directly enter the seabed and estimate the approximate volume. It is also necessary to grasp the degree of filling inside the hull visually when injecting the high flowability concrete and to transmit the information to the concrete pump driver in the sea or on the land from time to time.

The sinking pulmonary ship according to the present invention may be used in the form of a ship sinking due to a marine accident or the like, and the type thereof is not particularly limited.

Highly homogeneous water-insoluble concrete injected into the inside of the ship has more fluidity than its viscosity, spreads widely, and narrow gap is filled with gravity, so it should be used only for filling and shielding inside the hull.

In the second step, it is the process of manufacturing the insoluble concrete in high fluidity and low fluidity. The second stage high-flowability and low-flow water underwater non-separating concrete can be manufactured in sea or on land, and when the sinking waste ship is close to the land and the unbonded concrete in water can reach the work site through the piping, It is economical to manufacture on land because of convenience of procurement or manufacturing work. However, when concrete can not be manufactured on land because work site is separated from land, concrete equipment is installed on working line such as barge, Concrete can be manufactured.

Also, the manufacturing equipment used in the step of manufacturing the underwater non-separation concrete may include a seawater meter, an aggregate meter, a binder meter, an underwater non-separation admixture meter, a fluidizer meter, a mixing mixer, and a mixture transfer pump.

The underwater unbonded concrete is composed of insoluble concrete in high fluidity water filled inside a sinking ship and a low fluidity insoluble concrete underwater placed outside and around the sinking ship hull.

The term " high fluidity " in the highly flowable water-insoluble concrete means that the flow satisfies the range of 40 to 60 cm. If the flow of the insoluble concrete in the high-flowability water according to the present invention is less than 40 cm, the fluidity may fall and the filling may not be performed in a narrow gap. If the flow is 60 cm or more, the filling performance is good, It is economically disadvantageous due to overuse of the material and separation of materials may occur.

In the low-flowability water-insoluble concrete, "low fluidity" means that the slump satisfies the range of 4 to 12 cm. If the slump of the low fluidity underwater insoluble concrete according to the present invention is less than 4 cm, the kneading becomes too much, so that the pressure-feeding ability of the pump is lowered and the workability is lowered. When the slump is 12 cm or more, As a result of the dough, the artificial rock can not be formed outside and around the seabed, but it can only be spread sideways, so that the predetermined purpose can not be achieved.

The water insoluble concrete according to the present invention comprises 20 to 50 parts by weight of a low-alkaline coal combustion fly ash having a calcium oxide content of less than 5% and a pH of 6 to 10 per 100 parts by weight of cement, 1 to 20 parts by weight of a mixture of one or two selected from the group consisting of meta kaolin and silica fume in the range of 1 to 8, 0.1 to 4 parts by weight of an MC based thickening agent powder, 0.5 to 4 parts by weight of a fluidizing agent powder, 300 to 500 parts by weight of an aggregate having a fineness modulus of 3 to 5 and 40 to 100 parts by weight of sea water as a blending water.

The binder and the concrete used in the production of the underwater non-separation concrete of the present invention are preferably composed of weak alkali in order to enhance the resistance of the seawater to sulfate.

The cement used in the highly flowable underwaterly insoluble concrete of the present invention is characterized by being selected from the group consisting of one kind of portland cement, blast furnace slag cement and sulfur sulfate portland cement (five kinds).

The low alkali alkaline coal combustion fly ash, meta kaolin and / or silica fume are added to the cement to produce a binder having a low alkalinity and a high resistance to sulfate.

The highly flowable water insoluble concrete of the present invention comprises 20 to 50 parts by weight of a low alkali coal combustion fly ash having a calcium oxide content of less than 5% and a pH of 6 to 10, based on 100 parts by weight of cement.

Neutral (pH 6 ~ 7) Coal Combustion Fly ash is produced only in S thermal power plant in Chungnam among many thermal power plants in Korea. In other coal combustion plants in Korea, weak alkaline or strong alkali coal fly ash Is produced.

It is preferable that the pH of the coal-fired fly ash contained in the binder of the present invention is less than 6. However, in reality, coal-fired fly ash having a pH of less than 6 expressing pozzolanic activity does not occur in Korea. When the pH of the coal-fired fly ash is more than 10, there is a limit in lowering the alkalinity of the binder, so that the effect of reducing the sulfate of the low alkali binder can not be expected.

In addition, high fluidity antiwashout underwater concrete according to the invention gives to increase the long-term strength of the micropore filled and pozzolanic activity of the concrete as the particulate material is a SiO ₂ as main component, inhibiting the initial heat of hydration, and Al ₂ O ₃ content in the binding agent of cement Is selected from the group consisting of metakaolin and / or silica fume having a pH of 6 to 8, which improves the sulfate resistance of the binder for production of concrete and lowers the alkalinity of the binder, Parts by weight.

If the content of meta kaolin and / or silica fume is less than 1 part by weight based on 100 parts by weight of the cement, the long-term strength improving effect, the initial hydration heat inhibiting effect, the sulfate attack improving effect and the alkalinity lowering effect are insufficient, , If it is contained in an amount exceeding 20 parts by weight, the effect of improving the sulfate resistance and the alkalinity is increased, but the strength may be lowered due to the lack of the relative amount of the cement in the binder.

Also, the high-dynamic-water insoluble concrete of the present invention contains 0.1 to 4 parts by weight of the MC-based thickener powder. Since the concrete of the present invention directly injects and disposes the concrete into the wastewater buried in the sea, it is necessary to prevent the binder and the aggregate from becoming viscous and separated from each other in the water. Therefore, it is necessary to use a thickener which exerts the viscosity of the binder paste. Such a thickener is widely distributed on the market as an industrialized product. If less than 0.1 part by weight is contained, the viscosity of the concrete is insufficient, resulting in separation of the material. As a result, the required performance of the concrete can not be exhibited, and more than 4 parts by weight , The viscosity is strong, but the fluidity is insufficient, so that the concrete may smoothly spread and the performance of shielding the pores may be deteriorated.

Also, in the highly flowable underwaterly insoluble concrete of the present invention, 0.5 to 4 parts by weight of the fluidizing agent powder is included. The fluidizing agent forms a static electricity of anions between the cement particles and serves to improve the spreading performance of the cement particles due to the electrostatic repulsion, that is, the fluidity, so that the product can easily be obtained on the market.

If the amount of the fluidizing agent powder is less than 0.5 parts by weight, fluidity is insufficient and the filling performance of the pores can not be guaranteed. If the fluidizing agent is contained in an amount exceeding 4 parts by weight, sufficient fluidity is obtained, May be deteriorated.

The MC-based thickening agent and the fluidizing agent to be used in the present invention are generally used industrially, and the products distributed on the market are used without being processed as they are obtained.

Also, the highly flowable underwaterly insoluble concrete of the present invention may contain 300 to 500 parts by weight of aggregate having a grain size of 1 to 20 mm and a fineness modulus of 3 to 5.

The granularity is a term that expresses the degree of the particle size of the aggregate. When the test is carried out with sieves of 80 mm, 40 mm, 20 mm, 10 mm, 5 mm, 2.5 mm, 1.25 mm, 0.65 mm, 0.3 mm and 0.15 mm The sum of residual ratios remaining in the sieve (cumulative residual ratios) is defined as the granulatio. In the case of the aggregate used in the production of the concrete according to the present invention, the granules and the granules are suitably distributed so that the size ratio of the aggregate particles is appropriate, and the granulation ratio is about 3 to 5. The aggregate is used in an amount of 300 to 500 By weight. If the aggregate is contained in an amount less than 300 parts by weight, the strength of the aggregate is increased because the amount of the binder is relatively high. However, the cost of the unit concrete is excessively high, which is uneconomical. When the aggregate exceeds 500 parts by weight, The economical efficiency is sufficient, but the cement paste to be applied on the surface area of the aggregate is relatively short, resulting in a decrease in strength and durability and a decrease in workability.

In the case of the aggregate, the fine aggregate and the coarse aggregate may be separately weighed as necessary.

The high-dynamic-water insoluble concrete in the present invention may contain 40 to 100 parts by weight of sea water as a blending water based on 100 parts by weight of cement. The construction according to the present invention uses seawater at the construction site as a blending water because it is to artificially shed the wrecked ship in the sea. If the sea water is contained in an amount of less than 40 parts by weight, the water binder ratio in the concrete mixture is lowered to have a good effect on the strength development, but the desired kneading agent is not expressed and the fluidity can not be secured. , The water binding material ratio becomes too high and the predetermined strength may not be exhibited.

Meanwhile, the low-flow water non-separating concrete for exhibiting low fluidity according to the present invention may be constituted by excluding the fluidizing agent powder in the non-separating concrete composition in the high-dynamic-water.

As described above, the non-separable concrete in the high-flowability water and the low-flowability underwater non-separating concrete are manufactured. In the following step 3, the non-separating concrete is injected into the submarine submerged ship hull to detoxify the waste line. step; And step 4 is a step of constructing the indefinite artificial rock by installing the low-fluidity insoluble concrete in the outside and the periphery of the submarine canal.

In order to detoxify the sinking waste ship according to the present invention to form artificial fish cherries, the following tests were conducted to examine the characteristics of the concrete composition in more detail.

Example 1: Manufacture of non-separating concrete in high flowability water

35 parts by weight of S thermal coal-fired fly ash having a pH of 6.4 and 10 parts by weight of silica fume having a pH of 6.7, which is a product of P steel produced from Pohang Material, were homogeneously mixed with 100 parts by weight of blast furnace slag cement to prepare a binder. 400 parts by weight of an aggregate having a pavement ratio of 4.5, 2 parts by weight of MC-based thickener, 2 parts by weight of naphthalene-based fluidizing agent of K Chemical and 70 parts by weight of seawater were homogeneously mixed using a forced mixer, Concrete was blended.

Example 2: Manufacture of low fluidity water-insoluble concrete

First, 35 parts by weight of S-phase coal-fired fly ash having a pH of 6.4 and 10 parts by weight of silica fume having a pH of 6.7, which is a product of P steel produced in Pohang, were homogeneously mixed with 100 parts by weight of blast furnace slag cement to obtain a binder. 400 parts by weight of an aggregate of 4.5 with a sand blending rate of 4.5, 2 parts by weight of an MC-based thickener of L Fine Chemicals, and 70 parts by weight of seawater were homogeneously mixed using a forced mixer to form a low fluidity insoluble concrete in water.

Comparative Example 1: Production of non-separating concrete in high flowability water

5 parts by weight of an MC-based thickener, which is a fine chemical of L, was added so that the mixing ratios of the other ingredients were the same among the mixing ratios of Example 1, and the raw materials were mixed homogeneously using a forced mixer, Underfired concrete.

Comparative Example 2: Production of non-separating concrete in high flowability water

5 parts by weight of a fluidizing agent powder as a K chemical product was added so that the mixing ratios of the other ingredients were the same among the mixing ratios of Example 1, and the raw materials were mixed homogeneously using a forced mixer, Fire - isolated concrete.

Comparative Example 3: Production of low-flowability water-insoluble concrete

250 parts by weight of the aggregate was added to 100 parts by weight of the cement so that the ratio of the other raw materials among the mixing conditions of Example 2 was the same, and the raw materials were homogeneously mixed using a forced mixer, Flowable underwater unbonded concrete.

Comparative Example 4: Production of low-flowability water-insoluble concrete

The mixing ratio of the other raw materials among the mixing conditions of Example 2 was the same, and 550 parts by weight of aggregate was added to 100 parts by weight of the cement so as to be outside the scope of the present invention. The raw materials were homogeneously mixed using a forced mixer, Flowable underwater unbonded concrete.

Control 1

In place of the binder of the present invention, only blast furnace slag cement was used as a binder for concrete, and 400 parts by weight of an aggregate having a sagging ratio of 4.5 with respect to 100 parts by weight of the cement, 2 parts by weight of an MC-based thickener of L Fine Chemical and a naphthalene- And 70 parts by weight of seawater were homogeneously mixed using a forced mixer to prepare a water insoluble concrete in a high flowability water.

Control group 2

In place of the binder of the present invention, only blast furnace slag cement was used as a binder for concrete, 400 parts by weight of an aggregate having a sagging ratio of 4.5 with respect to 100 parts by weight of the cement, 2 parts by weight of an MC thickener and a 70 parts by weight of seawater were mixed using a forced mixer And then mixed with homogeneously to form a low fluidity water insoluble concrete.

Experimental Example 1: Analysis of pH Test Result According to Binder Composition

The pH results (theory and practice) according to the binder composition according to Examples 1 and 2 and the control groups 1 and 2 were measured, and the results are shown in Table 1 below.

division Blast furnace slag
cement
(pH: 12.6) S firepower
Coal fly ash
(pH: 6.4) Silica fume (pH 6.7) pH Theoretical value Measure Examples 1 and 2 Weight portion 100 35 10 10.699 10.4 ratio(%) 69 24 7 Influence factor 8.694 1.536 0.469 Control group 1, 2 Weight portion 100 - - 12.6 12.6 ratio(%) 100 - - Influence factor 12.6 - -

As shown in the results of Table 1, the binder according to the embodiment of the present invention exhibits relatively low alkali (pH) as compared with the case where only blast furnace slag cement is used as in the control groups 1 and 2, Can be reduced, and the resistance to sulfate can also be expected to have a great effect.

Experimental Example 2: Evaluation of physical properties

The basic physical properties of the high and low flow concrete prepared according to the above Examples and Comparative Examples were measured as follows. The results are shown in Table 2 below.

Flow: Concrete flow test according to ASTM C 124 was carried out.

Slump: The concrete slump test method of KS F 2402 was carried out.

Material separation evaluation constant: flow ÷ slump.

Uniaxial compressive strength: Compressive Strength Specimens were prepared and the compressive strengths at 7 days and 28 days after curing at 20 ℃ and 95% humidity were measured.

sample Flow
(Cm) slump
(Cm) Workability Visual confirmation Material separation evaluation constant Uniaxial Compressive Strength (MPa) 7 days 28th Example 1 (High Flow) 54.2 22.5 Good 2.4 12.5 18.7 Example 2 (low flow) - 5.5 Good - 11.8 17.5 Comparative Example 1 (High Flow) 37.8 13.5 Bad 2.8 13.2 19.1 Comparative Example 2 (High Flow) 68 23.5 Bad 2.9 6.3 9.5 Comparative Example 3 (low flow) - 15.0 Good - 11.1 16.4 Comparative Example 4 (low flow) - 13.0 Bad - 7.0 10.4 Control 1 (high flow rate) 52 20 Good 2.6 13.4 17.4 Control 2 (low flow) - 5.0 Good - 13.8 18.3

As shown in Table 2, the blends according to Examples 1 and 2 falling within the scope of the present invention showed the same results as those of Comparative Examples using only blast furnace slag cement. In the combination of high flow and low flow, The flow was confirmed to show the flow and the slump and the strength.

However, in the case where the thickener of Comparative Example 1 is over-charged and the fluidizer of Comparative Example 2 is excessively charged, the flow is out of the range of 40 to 60 cm and the result of satisfying the generalized high- Respectively.

In the case of Comparative Example 3 in which the aggregate is incorporated in the low-flow concrete, the strength is satisfactory but the slump value is too high. Therefore, when the aggregate is installed on the outer periphery of the hull, the property spreading sideways is too large to form an artificial rock. In Comparative Example 4, the slump was out of the reference value due to the material separation, and the strength was not sufficiently manifested due to the insufficient amount of the cement. Thus, the durability was found to be problematic.

From these results, it can be understood from the above results that the insoluble concrete in the high-flowability water according to the present invention is injected into the sinking culverts, and the low-flowability insoluble concrete is placed in the outer and periphery of the sinking culverts, It can be confirmed that artificial reefs can be effectively manufactured by using the sinking line after forming the rock.

In addition, the artificial fish prepared according to the present invention is expected to fulfill its role as an artificial fish supple by satisfying physical properties such as flow, slump and strength.

Claims (6)

1) Investigating the submarine submergence abandonment to estimate the necessary volume to fill the hull;
2) producing high-flowability and low-flowability water-insoluble concrete;
3) injecting insoluble concrete in the high-flowability water into the submarine submerged arc; And
And 4) constructing the irregularly shaped artificial rock by placing the low-fluidity insoluble concrete in the outside and the periphery of the underwater sink line. The method according to claim 1,
The high-flowability water-insoluble concrete
With respect to 100 parts by weight of cement,
20 to 50 parts by weight of a low-alkaline coal-fired fly ash having a calcium oxide content of less than 5% and a pH in the range of 6 to 10;
1 to 20 parts by weight of a mixture of either one or two selected from the group consisting of metakaolin and silica fume having a pH in the range of 6 to 8;
0.1 to 4 parts by weight of a MC-based thickener powder;
0.5 to 4 parts by weight of a fluidizing agent powder;
300 to 500 parts by weight of an aggregate having a grain size of 1 to 20 mm and a fineness modulus of 3 to 5; And
A method for manufacturing an artificial fish meal using a sinking culvert comprising 40 to 100 parts by weight of seawater as a blending water. The method according to claim 1,
The low fluidity underwater non-separating concrete
With respect to 100 parts by weight of cement,
20 to 50 parts by weight of a low-alkaline coal-fired fly ash having a calcium oxide content of less than 5% and a pH in the range of 6 to 10;
1 to 20 parts by weight of a mixture of either one or two selected from the group consisting of metakaolin and silica fume having a pH in the range of 6 to 8;
0.1 to 4 parts by weight of a MC-based thickener powder;
300 to 500 parts by weight of an aggregate having a grain size of 1 to 20 mm and a fineness modulus of 3 to 5; And
A method for manufacturing an artificial fish meal using a sinking culvert comprising 40 to 100 parts by weight of seawater as a blending water. The method according to claim 1,
In the step 3), the water insoluble concrete in the high-flowability water has a flow of 40 to 60 cm,
Wherein the low-flowability water-insoluble concrete in step 4) has a slump of 4 to 12 cm. The method according to claim 3 or 4,
Wherein the cement is any one or a mixture of two or more selected from the group consisting of a sulphate sulphate Portland cement, a blast furnace slag cement, and a type 1 ordinary portland cement. An artificial fish weighing method using a sinking line manufactured according to the method of claim 1.