KR101071577B1 - Manufacturing method for underwater conctruction - Google Patents

Abstract

The present invention is an illite (illite) is contained in an appropriate ratio to minimize the possibility of the release of harmful substances and its manufacturing method and artificial reefs that can greatly reduce the toxic emissions in the water by using the concrete It relates to environmentally friendly underwater structures.
Specifically, the present invention provides a concrete containing the illite mixed in the cement with the illite 2.5 to 5.5% by weight of the cement, (a) preparing a cement; (b) providing a concrete manufacturing method containing an illite comprising the step of mixing an illite of 2.5 ~ 5.5% by weight of the cement to the cement, as an underwater structure using the concrete, aggregate in the concrete And an underwater structure of at least one of artificial reefs and water tanks in which water is mixed and cured and manufactured and in constant contact with water during use.

Description

Manufacturing method for underwater conctruction

The present invention relates to concrete. More specifically, the present invention can be used to reduce the toxic emissions in the water by using the concrete and the production method thereof and concrete that can contain the illite (illite) in an appropriate ratio to minimize the possibility of the release of harmful substances. It relates to environmentally friendly underwater structures such as artificial reefs.

As is well known, concrete is a general term for civil engineering and building materials which combines and solidifies aggregates such as sand and gravel in the form of paste using the hydration reaction between cement and water. The cement used here is gypsum in a clinker that is mixed, melted and fired with inorganic raw materials containing lime, silica, alumina, iron oxide, etc. The main components are powdered portland cement (hereinafter referred to as PC).

On the other hand, with the recent increase in interest in the health of individuals and the common environment, the seriousness of various toxic chemicals such as volatile organic compounds (VOCs) and formaldehyde (VOCs) has been attracting attention. Attention is focused on the harmfulness of concrete.

Commonly referred to as concrete toxic, the main causes are heavy metals such as hexavalent chromium, nickel, and radon in cement, and ready-mixed concrete admixtures added during the manufacturing process of concrete. Itching, itching, atopic dermatitis, and the like are known to cause severe respiratory diseases such as asthma, decreased sexual function, lung cancer and skin cancer.

In particular, when manufacturing aquatic structures such as artificial reefs or aquaculture tanks with general concrete, it releases strong alkaline water of pH 12-14 due to the reaction of cement and water, which seriously pollutes the aquatic environment and continuously releases harmful substances. This has long-term adverse effects on the aquatic ecosystem. At this time, considering that the underwater structure is the main living space of aquatic life such as fish and shellfish, it is likely to act deadly to humans.

In recent years, attempts have been made to paint or use additives such as neutralizers to suppress the release of harmful substances in aquatic structures. However, at present, most of the short-term effects can be achieved for many years. It is difficult to expect an effect.

The present invention has been made to solve the above problems, and aims to provide a concrete and a method of manufacturing the same that can minimize the possibility of releasing harmful substances continuously for a long time comparable to its own life.

Furthermore, the present invention provides an underwater structure using the concrete to significantly reduce the possibility of toxic discharge in the water and to provide a concrete way to protect the underwater environment and the underwater ecosystem.

In order to achieve the above object, the present invention provides a concrete containing illite mixed with 2.5 to 5.5% by weight of the illite in the cement. At this time, the cement is Portland cement, the cement and the illite is characterized in that the illite having a particle diameter of 3 ~ 30㎛.

And the present invention (a) preparing a cement; (b) it provides a concrete manufacturing method containing the illite comprising the step of mixing the illite of 2.5 ~ 5.5% by weight of the cement to the cement. At this time, the step (a) comprises the steps of (a1) mixing limestone and clay in a weight ratio of 5.5 ~ 3.5: 1 to obtain a mixture; (a2) melting and baking the mixture at 850 to 1500 ° C. to obtain a clinker; (a3) after the addition of 3 to 5% by weight of gypsum to the clinker, characterized in that it comprises the step of grinding to a particle size of 3 ~ 30㎛, wherein step (a1) is at least one of silica or slag in the mixture It characterized in that it further comprises the step of adding less than 10% by weight based on the total weight.

In another aspect, the present invention provides an underwater structure using at least one of the above-described artificial artificial reefs, water tanks are produced by mixing and curing the aggregate and water in the concrete and in constant contact with water during use.

Concrete according to the present invention has the advantage of being able to minimize the possibility of releasing harmful substances continuously for a long time to pursue the stability in use.

And concrete manufacturing method according to the present invention has the advantage that can be applied universally to the existing process and relatively simple to greatly improve the yield.

In addition, the aquatic structure according to the present invention has the advantage of greatly reducing the possibility of toxic emissions in the water and rather protect the aquatic environment and the aquatic ecosystem by emitting a rotating electromagnetic wave advantageous to aquatic life such as fish and shellfish.

1 is a flow chart showing a concrete manufacturing method according to the present invention.
2 to 7 are graphs showing the results of rotating electromagnetic tests of concrete bricks according to one embodiment of the present invention and concrete bricks according to Comparative Examples 1 and 2, respectively.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a flowchart illustrating a concrete manufacturing method according to the present invention, for convenience, cement is assumed to be a Portland cement.

However, this assumption is merely illustrative for the sake of understanding and does not limit the technical concept and, if necessary, sulfate resisting PC, high early strength PC, ultra high early strength PC), moderate heat PC, white PC, etc., as well as alumina cement, magnesia cement, silica cement, blast furnace cement (portland blast furnace) It can be easily understood through the following description that it can be selected in various ways depending on the purpose, such as cement, fly ash cement, expansive cement.

First, limestone and clay, which are the main raw materials of cement, are mixed at a ratio of 5.5 to 3.5: 1 by weight. (St1) At this time, preferably, limestone contains 95% or more of CaCO ₃ , and clay contains 60 to 70 of SiO ₂ . It contains%. And, if necessary, silica stone and / or iron oxide slag are added in an appropriate amount of less than 10% by weight of clay, respectively.

Subsequently, the mixture is sufficiently melted and baked at about 850 to 1500 ° C. (St2) At this time, if necessary, a suspension preheater type SP kiln or a new suspension preheater type is used. Dedicated firing apparatus such as NSP Kiln can be used, whereby clinker of gray black particle state is obtained.

Subsequently, after cooling the clinker, 3 to 5% by weight of gypsum is added and ground to a particle size of 3 to 30 µm. At this time, if necessary, a dedicated mill device such as a ball mill or a roller mill may be used, whereby a portland cement is obtained.

For reference, the contents lacking in the above process can refer to the general technology, and thus detailed description thereof will be omitted.

Next, 2.5 to 5.5% by weight of illite, preferably 2.5 to 3.5% by weight, is added to the Portland cement. At this time, the illite is a monoclinic mica mineral 1 to 2, specific gravity of 2.6 to 2.9, streaky color to white and chemical composition of (K, H ₃ O) Al ₂ (Si, Al) ₄ O ₁₀ ( H ₂ O, OH) ₂ . And preferably, the elite uses fine particles pulverized to a particle size of 3 ~ 30㎛.

This gives concrete according to the invention.

And concrete according to the present invention is used by mixing an appropriate amount of aggregate and water, aggregate may be mixed in various ratios according to the purpose, such as fine aggregate sand from gravel (coarse aggregate) and the like. Preferably, water is added by dividing the weight of water by the weight of cement, ie, water-cement ratio of 40-65%.

Hereinafter, look at the various characteristics of the concrete according to the present invention.

In order to examine the characteristics of the concrete according to the present invention, a brick was manufactured from concrete according to one embodiment of the present invention. The process is as follows.

11.5 kg of sufficiently dried limestone, 2.2 kg of clay, 0.5 kg of silica, and 0.5 kg of slag were mixed and melted and fired in an NSP kiln firing apparatus having an inlet temperature of 1450 ° C. to obtain a clinker. After adding 3% by weight of gypsum to the clinker, the roller mill was pulverized to an average particle size of 12 μm, and the illite having a particle size of 12 μm was mixed at 3% by weight based on the total weight. 50% by weight of water and cement was added to the mold and cured to obtain concrete bricks 100 mm wide, 200 mm long and 70 mm high.

And as a comparative example for comparison with this, all the processes were the same, but the concrete bricks of Comparative Examples 1 and 2 having illite contents of 0 wt% and 5 wt%, respectively.

On the other hand, the concrete according to the present invention can see the greatest effect when used in the underwater environment, Experimental Example 1 and 2 below is a test result performed by the Ajou University rotational electromagnetic measurement research team in one embodiment of the present invention Four types of rotating electromagnetic waves measured in the magnetic field by immersing the concrete bricks according to Examples 1 and 2 in the same amount of water, respectively, and then applying two or more reference electromagnetic waves having a known phase, period, and direction. Some combinations of these were detected by comparison.

For reference, specific methods, measuring devices, and the like of Experimental Examples 1 and 2 are described in detail in Patent No. 0432982 and Patent No. 0631869.

And the characteristics and properties of each of the four types of rotating electromagnetic waves are shown in Table 1.

TABLE 1

Experimental Example 1

In this experimental example, the amount of rotating electromagnetic waves emitted from each concrete brick was measured.

FIG. 2 is a test result of a target of 0% concrete bricks (Comparative Example 1) with 0% illite content while maintaining a temperature of 23.00 to 24.00 ° C (average 23.72 ° C) and a humidity of 31.00 to 33.00% (average 32.17%). (1.602 x 10 ^-19 coulombs) ranged from 0.00 to 12.97 (average 1.21).

FIG. 3 is a test result for a 3% concrete brick (one embodiment) containing 3% illite while maintaining a temperature of 23.00 to 24.00 ° C (average of 24.00 ° C) and a humidity of 31.00 to 33.00% (average of 32.24%). 1.602 × 10 ⁻¹⁹ coulombs ranged from 0.00 to 8.26 (average 1.89).

4 is a test result of a test of 5% concrete bricks (Comparative Example 2) containing 5% illite while maintaining a temperature of 23.00 to 24.00 ° C (average 23.99 ° C) and a humidity of 31.00 to 34.00% (average 32.11%). (1.602 x 10 ^-19 coulombs) ranged from 0.00 to 9.88 (average 1.73).

Table 2 below summarizes the results of FIGS. 2 to 4.

TABLE 2

Experimental Example 2

In this experimental example, the amount of positive and left negative rotating electromagnetic waves was measured among the rotating electromagnetic waves emitted from each concrete brick.

5 is a test result for a concrete brick (Comparative Example 1) with a 0% illite content while maintaining a temperature of 24.00 to 25.00 ° C (average 24.01 ° C) and a humidity of 31.00 to 33.00% (average 31.49%). Left turn negative rotating electromagnetic charges (1.602 x 10 ^-19 coulomb) ranged from 0.03 to 4.79 (average 1.83).

FIG. 6 is a test result of a right-turn positive and left-turn negative rotating electromagnetic wave charge (1.602 ×) as a result of a test of a concrete brick (one embodiment) containing 3% illite while maintaining a temperature of 24.00 ° C. and a humidity of 31.0 to 32.00% (average of 31.42%). 10 ^-19 coulombs ranged from 0.00 to 4.95 (average 0.82).

7 is a test result for a concrete brick (Comparative Example 2) containing 5% illite content while maintaining a temperature of 23 to 24 ° C (average 23.91 ° C) and a humidity of 32.0 to 34.00% (average 32.33%). Left turn negative rotating electromagnetic charge (1.602 × 10 ^-19 coulomb) was 0.00 ~ 9.08 (average 2.08).

Table 3 below summarizes the results of FIGS. 4 to 6.

TABLE 3

Meanwhile, referring to Tables 2 and 3 above, the concrete brick according to an embodiment of the present invention emits the highest amount of rotating electromagnetic waves in water, while the amount of the right rotating voice and the left rotating positive rotating electromagnetic waves, which are harmful to the human body or seafood, is The lowest. In consideration of the mutual correspondence and the offset caused by the change in the rotation direction and the radius of the rotating electromagnetic waves, the concrete brick according to an embodiment of the present invention is advantageous to the human body or fish and shellfish in the water compared with Comparative Examples 1 and 2 It can be seen that the right turn negative and the left turn positive energy are emitted much.

In addition, the concrete brick according to Comparative Example 2 of the present invention emits the second largest amount of rotating electromagnetic waves in water, although the average amount of the right-turn negative and left-turn positive rotating electromagnetic waves is higher than in Comparative Example 1, the overall graph is compared. Considering that it exists below Example 1, it can be seen that this also generates a considerable amount of the right-turn negative and left-turn positive energy beneficial for fish and shellfish.

The above contents and drawings are examples of the present invention and do not limit the technical spirit thereof, that is, the present invention may be modified as many as possible, and if all these modifications are within the technical spirit of the present invention, the scope of the present invention should be considered. The scope of the present invention is defined in the following claims.

Claims (6)

(a) mixing a limestone containing 95% by weight or more of CaCO ₃ and clay containing 60 to 70% by weight of SiO ₂ in a ratio of 5.5 to 3.5: 1 by weight to obtain a mixture;
(b) melting and firing the mixture at 850-1500 ° C. to obtain a clinker;
(c) After cooling the clinker, 3 to 5 wt% of gypsum based on weight of the clinker is added and pulverized to a particle size of 3 to 30 μm. Obtaining a light containing cement; And
(d) adding 50% by weight of sand by weight of the cement and 50% by weight of water by weight of the cement to obtain the concrete containing illite, and using the concrete to at least one underwater structure of artificial reef and tank Method for producing an underwater structure comprising the step of manufacturing.
The method according to claim 1,
In step (a),
Adding at least one of silica or slag to the mixture in less than 10% by weight based on the total weight. delete delete delete delete

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