KR102228174B1 - Concrete mixing composition having high intensity - Google Patents

Abstract

The present invention relates to a high-strength concrete blend composition comprising: a waste electric pole; a waste insulator; granite; cement; and water, and can form a high-strength concrete structure having compressive strength of 900 to 1,000 kgf/cm^2. In addition, high strength in high salinity environments, acidic atmospheric environments, and high salinity waters are consistently maintained, and adhesion with reinforcing bars even in an underwater environment is remarkably improved.

Description

High-strength concrete mixing composition {CONCRETE MIXING COMPOSITION HAVING HIGH INTENSITY}

The present invention relates to a high-strength concrete blending composition, has a compressive strength of 900 to 1,000kgf/㎠, has the advantage of maintaining a constant high strength even in a high salt atmosphere, acidic atmosphere and high salt water, and It relates to a high-strength concrete blending composition with remarkably improved adhesion retention.

Concrete is used for various buildings and constructions along with reinforcement. As buildings and facilities become taller and larger, high-strength concrete is gradually required, and strength can be stably maintained even in high salt, acid, and high humidity environments. Development of existing concrete is required.

On the other hand, when the service life of a telephone pole installed for electric power transportation is exhausted, the waste electric pole obtained by removing it is gradually increasing, and in Patent Document 1 below, a high-strength concrete compound composition using the recycled aggregate of the waste electric pole is disclosed. Has been.

However, the concrete mix composition disclosed in Patent Document 1 has a limitation in that it cannot obtain the strength of concrete, which has become more demanding due to the rise and size of various buildings and facilities in recent years, and in particular, this is a high salt atmosphere, acidic atmosphere, and high salinity. There was a problem in that the strength was lowered in water, and in particular, there was a problem in that close adhesion with reinforcing bars was not sufficiently exhibited in an underwater environment.

Accordingly, while promoting the recycling of resources by using waste electric poles, it has the strength of concrete, which is more demanding due to high-rise and large-scale, and the strength does not decrease in high-salt, acidic, and high-salt water. There is an urgent need to develop a novel high-strength concrete blending composition that can sufficiently exhibit the ability to maintain close contact with reinforcing bars even in the environment.

Patent Document 1: Republic of Korea Patent Publication No. 10-0404495 (2003.11.05)

Therefore, in the present invention, Pung Jeonju; Lung insulator; granite; cement; And it was found that the problem can be solved by preparing a high-strength concrete blending composition comprising water, and the present invention was completed based on this.

Therefore, one aspect of the present invention is to provide the strength of concrete, which is more demanded according to the high-rise and large-sized water, while promoting the recycling of resources by utilizing the waste electric pole, and the strength in high salt atmosphere, acid atmosphere, and high salt water. It is intended to provide a novel high-strength concrete blending composition that does not deteriorate and can sufficiently exhibit close adhesion with reinforcing bars even in an underwater environment.

The high-strength concrete blending composition according to an embodiment of the present invention is used as waste Jeonju; Lung insulator; granite; cement; And water.

In the high-strength concrete blending composition according to an embodiment of the present invention, the granite is a modified granite, and the modified granite is a granite crushing step of preparing a pulverized granite by pulverizing the granite to have an average particle diameter of 5 to 10 mm (S100 ); An acid treatment step (S200) of preparing an acid-treated granite pulverized product by immersing the granite pulverized product in an aqueous sulfuric acid solution having a concentration of 20 to 50%; And a sintering treatment step (S300) of preparing a sintered granite pulverized product by placing the acid-treated granite pulverized product in a high-temperature sintering furnace and firing at a temperature of 800 to 1,000°C.

In the high-strength concrete mixture composition according to an embodiment of the present invention, the waste electric pole is included in the form of a first waste electric pole mixture, a second waste electric pole mixture, and a third waste electric pole mixture, and the first waste electric pole mixture is Is formed by mixing the pulverized first waste electric pole prepared to have an average particle diameter of 1 to 5 mm with lime powder and water, and the second waste electric pole mixture pulverizes the waste electric pole to obtain an average particle diameter of 5 to 10 mm. The second pulverized waste electric pole prepared to have is acid-treated by immersing it in an aqueous sulfuric acid solution of 20 to 50% concentration, and the second pulverized waste electric pole thus acid-treated is formed by mixing lime powder and water, and the third waste For the mixture of electric poles, the pulverized third waste electric pole prepared to have an average particle diameter of 10 to 20 mm by pulverizing the waste electric pole is acid-treated by immersing it in an aqueous sulfuric acid solution of 20 to 50% concentration, and the acid-treated third waste electric pole is crushed. It is characterized in that it is formed by applying a flame of 1,400 to 1,500 ℃ to water, and then mixing it with lime powder and water.

In the high-strength concrete mixture composition according to an embodiment of the present invention, the waste insulator is included in the form of a first waste insulator mixture and a first waste insulator mixture, and the first waste insulator mixture is 1 to 1 by pulverizing the waste insulator. It is formed by applying a flame of 1,000 to 1,200°C to a mixture of the first waste insulator pulverized material formed to have an average particle diameter of 5 mm and sand having an average particle diameter of 1 to 5 mm, and the second waste insulator mixture is a waste insulator mixture. It may be formed by adding a flame of 1,000 to 1,200°C to a mixture of the second waste insulator pulverized material formed to have an average particle diameter of 5 to 10 mm and sand having an average particle diameter of 1 to 5 mm.

The high-strength concrete blending composition according to the present invention can form a high-strength concrete structure having a compressive strength of 900 to 1,000kgf/㎠, and has the advantage of maintaining a constant high strength even in a high salt atmosphere, acid atmosphere, and high salt water. , It has the advantage of remarkably improved adhesion and retention with reinforcing bars even in an underwater environment.

Before describing the present invention in more detail, terms or words used in the specification and claims are not to be limited to their usual or dictionary meanings, and the concept of terms is appropriate to describe the invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention on the basis of the principle that it can be defined. Therefore, the configuration of the embodiment described in the present specification is only one preferred example of the present invention, and does not represent all the technical spirit of the present invention, and various equivalents and modifications that can replace them at the time of the present application It should be understood that there may be.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

The present invention relates to a high-strength concrete blending composition, has a compressive strength of 900 to 1,000kgf/㎠, has the advantage of maintaining a constant high strength even in a high salt atmosphere, acidic atmosphere and high salt water, and It relates to a high-strength concrete blending composition with remarkably improved adhesion retention.

The high-strength concrete blending composition according to an embodiment of the present invention is used as waste Jeonju; Lung insulator; granite; cement; And water.

The high-strength concrete blending composition according to the present invention has an advantage in that resources can be recycled in that it uses the waste electricity poles and waste insulators collected by removing the power poles that have passed their service life.

On the other hand, the present invention is characterized in that a waste insulator is used together to reinforce strength and chemical resistance that may be degraded when only waste electrical poles are used.

In particular, the present invention is characterized in that granite is used to further improve the strength of concrete and to improve acid resistance, and in particular, the concrete compound composition of the present invention by modifying the granite through successive sulfuric acid treatment and high temperature firing treatment. It is characterized in that it can further improve the strength and durability of the concrete structure manufactured by using.

That is, in the high-strength concrete blending composition according to an embodiment of the present invention, the granite is a modified granite, and the modified granite is a granite crushing step of preparing a granite pulverized product by pulverizing the granite to have an average particle diameter of 5 to 10 mm. (S100); An acid treatment step (S200) of preparing an acid-treated granite pulverized product by immersing the granite pulverized product in an aqueous sulfuric acid solution having a concentration of 20 to 50%; And a sintering treatment step (S300) of preparing a sintered granite pulverized product by placing the acid-treated granite pulverized product in a high-temperature sintering furnace and firing at a temperature of 800 to 1,000°C.

In addition, the waste electric pole used in the present invention is included in the form of a first waste electric pole mixture, a second waste electric pole mixture, and a third waste electric pole mixture as described below.

That is, in the high-strength concrete mixture composition according to an embodiment of the present invention, the waste electric pole is included in the form of a first waste electric pole mixture, a second waste electric pole mixture, and a third waste electric pole mixture, and the first waste electric pole mixture is It is formed by mixing the pulverized product of the first waste electric pole prepared to have an average particle diameter of 1 to 5 mm by pulverizing the waste electric pole with lime powder and water, and the second mixture of the waste electric pole pulverizes the waste electric pole to have an average of 5 to 10 mm. The second pulverized waste electric pole prepared to have a particle diameter is immersed in an aqueous sulfuric acid solution having a concentration of 20 to 50% for acid treatment, and the second pulverized waste electric pole thus acid-treated is mixed with lime powder and water. 3 The waste electric pole mixture is acid-treated by immersing the pulverized third waste electric pole prepared to have an average particle diameter of 10 to 20 mm by pulverizing the waste electric pole in an aqueous sulfuric acid solution of 20 to 50% concentration. It is characterized in that it is formed by applying a flame of 1,400 to 1,500 ℃ to the pulverized electric pole, and then mixing it with lime powder and water.

In the high-strength concrete mixture composition according to an embodiment of the present invention, the waste insulator is included in the form of a first waste insulator mixture and a first waste insulator mixture, and the first waste insulator mixture is 1 to 1 by pulverizing the waste insulator. It is formed by applying a flame of 1,000 to 1,200°C to a mixture of the first waste insulator pulverized material formed to have an average particle diameter of 5 mm and sand having an average particle diameter of 1 to 5 mm, and the second waste insulator mixture is a waste insulator mixture. It may be formed by adding a flame of 1,000 to 1,200°C to a mixture of the second waste insulator pulverized material formed to have an average particle diameter of 5 to 10 mm and sand having an average particle diameter of 1 to 5 mm.

<Production Example 1>

The first waste electric pole mixture was prepared by pulverizing the waste electric pole and mixing the pulverized product of the first waste electric pole prepared to have an average particle diameter of 3 mm with lime powder and water at a weight ratio of 100:50:100.

The second pulverized waste electric pole, prepared to have an average particle diameter of 8 mm by crushing the waste electric pole, is acid-treated by immersing it in an aqueous sulfuric acid solution having a concentration of 40% by volume for 30 minutes. Powder and water were mixed in a weight ratio of 100:50:100 to prepare a second waste electrolyzer mixture.

The pulverized third waste electric pole prepared to have an average particle diameter of 15 mm by pulverizing the waste electric pole was acid-treated by immersing it in an aqueous sulfuric acid solution having a concentration of 40% by volume for 30 minutes, and 1,400 in the pulverized product of the third waste electric pole thus acid-treated. After evenly applying a flame at °C for 30 minutes, it was cooled to room temperature and mixed with lime powder and water in a weight ratio of 100:50:100 to prepare a third waste electroporation mixture.

<Production Example 2>

The granite pulverized product was prepared by pulverizing the granite to have an average particle diameter of 8 mm, and the granite pulverized product was acid-treated by immersing the prepared granite pulverized product in an aqueous sulfuric acid solution having a concentration of 40% by volume. Was put in a high-temperature sintering furnace and calcined at a temperature of 1,000° C. for 2 hours to prepare a calcined granite pulverized product.

<Production Example 3>

The first waste insulator pulverized and formed to have an average particle diameter of 3㎜ and a mixture of sand having an average particle diameter of 3㎜ in a weight ratio of 1:1 were evenly mixed with a 1,100℃ flame for 30 minutes. A waste insulator mixture was prepared.

2nd waste insulator pulverized and formed to have an average particle diameter of 8 mm and a mixture of sand having an average particle diameter of 3 mm in a weight ratio of 1:1 were evenly mixed with a 1,100°C flame for 30 minutes. A waste insulator mixture was prepared.

<Example 1>

100 kg of the 1st waste electric pole mixture, 100 kg of the 2nd waste electric pole mixture, and 100 kg of the 3rd waste electric pole mixture prepared through Preparation Example 1, 50 kg of the calcined granite pulverized product prepared through Preparation Example 2, the above Preparation Example A high-strength concrete blending composition was prepared by mixing with 10 kg of the first waste insulator mixture and 10 kg of the second waste insulator mixture, 50 kg of Portland cement and 300 liters of water.

<Example 2> (Steel slag addition)

100 kg of the 1st waste electric pole mixture, 100 kg of the 2nd waste electric pole mixture, and 100 kg of the 3rd waste electric pole mixture prepared through Preparation Example 1, 50 kg of the calcined granite pulverized product prepared through Preparation Example 2, the above Preparation Example The first waste insulator mixture 10 kg and the second waste insulator mixture 10 kg, Portland cement 50 kg, steel slag 10 kg, and 300 liters of water were mixed to prepare a high-strength concrete blending composition.

<Example 3> (addition of steel slag and waste LCD crushed product)

100 kg of the 1st waste electric pole mixture, 100 kg of the 2nd waste electric pole mixture, and 100 kg of the 3rd waste electric pole mixture prepared through Preparation Example 1, 50 kg of the calcined granite pulverized product prepared through Preparation Example 2, the above Preparation Example The first waste insulator mixture 10 kg and the second waste insulator mixture 10 kg, Portland cement 50 kg, steel slag 10 kg, waste LCD pulverized material 10 kg, and 300 liters of water are mixed to prepare a high-strength concrete compound composition. I did.

<Comparative Example 1> (Use of pulverized untreated waste electric pole having an average particle diameter of 3 mm)

300 kg of pulverized waste electric pole pulverized to have an average particle diameter of 3 mm, 50 kg of calcined granite pulverized product prepared through Preparation Example 2, 10 kg of the first waste insulator mixture prepared through Preparation Example 3, and the second waste A concrete mix composition was prepared by mixing with 10 kg of insulator mixture, 50 kg of Portland cement and 300 liters of water.

<Comparative Example 2> (Use of pulverized untreated waste electric pole having an average particle diameter of 8 mm)

300 kg of the pulverized waste electric pole pulverized to have an average particle diameter of 8 mm, 50 kg of the calcined granite crushed product prepared through Preparation Example 2, 10 kg of the first waste insulator mixture prepared through Preparation Example 3, and the second waste A concrete mix composition was prepared by mixing with 10 kg of insulator mixture, 50 kg of Portland cement and 300 liters of water.

<Comparative Example 3> (using the pulverized material of untreated waste electric pole having an average particle diameter of 15 mm)

300 kg of the pulverized waste electric pole pulverized to have an average particle diameter of 15 mm, 50 kg of the calcined granite crushed product prepared through Preparation Example 2, 10 kg of the first waste insulator mixture prepared through Preparation Example 3, and the second waste A concrete mix composition was prepared by mixing with 10 kg of insulator mixture, 50 kg of Portland cement and 300 liters of water.

<Comparative Example 4> (Use of untreated granite pulverized material)

100 kg of the first waste electrophoresis mixture prepared through Preparation Example 1, 100 kg of the second waste electrophoresis mixture, and 100 kg of the third waste electrophoresis mixture, 50 kg of granite pulverized material having an average particle diameter of 8 mm, and Preparation Example 3 A concrete compound composition was prepared by mixing with 10 kg of the first waste insulator mixture and 10 kg of the second waste insulator mixture, 50 kg of Portland cement and 300 liters of water.

<Comparative Example 5> (Use of untreated waste insulator pulverized material having an average particle diameter of 3 mm)

100kg of the 1st waste electric pole mixture, 100kg of the 2nd waste electric pole mixture, and the 3rd 100kg of the waste electric pole mixture prepared through Preparation Example 1 were 50kg of the calcined granite crushed product prepared through Preparation Example 2, 3㎜ average A concrete blending composition was prepared by mixing with 20 kg of waste insulator pulverized material having a particle diameter, 50 kg of Portland cement, and 300 liters of water.

<Comparative Example 6> (Use of untreated waste insulator pulverized material having an average particle diameter of 8 mm)

The average of the crushed sintered granite 50 kg and 8 mm prepared through Preparation Example 2 for 100 kg of the 1st waste electrophoresis mixture, 100 kg of the 2nd waste electrophoresis mixture, and 100 kg of the 3rd waste electrophoresis mixture prepared through Preparation Example 1 A concrete blending composition was prepared by mixing with 20 kg of waste insulator pulverized material having a particle diameter, 50 kg of Portland cement, and 300 liters of water.

<Comparative Example 7> (Removing the calcined granite pulverized material in Example 1)

100kg of the 1st waste electric pole mixture, 100kg of the 2nd waste electric pole mixture, and 100kg of the 3rd waste electric pole mixture prepared through Preparation Example 1, 10kg and the second of the first waste insulator mixture prepared through Preparation Example 3 A concrete mix composition was prepared by mixing with 10 kg of waste insulator mixture, 50 kg of Portland cement and 300 liters of water.

<Comparative Example 8> (Removing the first waste insulator mixture and the second waste insulator mixture in Example 1)

100 kg of the 1st waste electric pole mixture, 100 kg of the 2nd waste electric pole mixture, and 100 kg of the 3rd waste electric pole mixture prepared through Preparation Example 1, 50 kg of calcined granite pulverized product prepared through Preparation Example 2, and Portland Cement 50 It was mixed with kg and 300 liters of water to prepare a concrete blending composition.

[Experiment 1] <Compressive strength test>

The concrete mixture composition prepared through Examples 1 to 3 and Comparative Examples 1 to 8 was put in a cylindrical frame having a diameter of 10 cm and a height of 30 cm and cured to produce a concrete structure. The compressive strength (kgf/cm2) was tested using the concrete structure thus produced, and the results are shown in Table 1 below.

division Compressive strength (kgf/㎠) Example 1 956 Example 2 1,123 Example 3 1,325 Comparative Example 1 642 Comparative Example 2 638 Comparative Example 3 635 Comparative Example 4 648 Comparative Example 5 641 Comparative Example 6 642 Comparative Example 7 533 Comparative Example 8 528

Looking at the results of Table 1, it can be seen that the compressive strength of Examples 1 to 3 is very superior to that of Comparative Examples 1 to 8.

[Experiment 2] <Test for retaining compressive strength in high salt environment>

The concrete mixture composition prepared through Examples 1 to 3 and Comparative Examples 1 to 8 was put in a cylindrical frame having a diameter of 10 cm and a height of 30 cm and cured to produce a concrete structure. The concrete structure thus produced was immersed in salt water of 10 wt% concentration for 6 months and taken out, and their compressive strength (kgf/cm 2) was tested, and the results are shown in Table 2 below.

division Compressive strength (kgf/㎠) Example 1 945 Example 2 1,018 Example 3 1,315 Comparative Example 1 421 Comparative Example 2 408 Comparative Example 3 412 Comparative Example 4 420 Comparative Example 5 401 Comparative Example 6 406 Comparative Example 7 359 Comparative Example 8 364

Looking at the results of Table 2, it can be seen that Examples 1 to 3 have almost no change in compressive strength even when exposed to a high salt environment for a long period of time.

[Experiment 3] <Test for retaining compressive strength in high acid environment>

The concrete mixture composition prepared through Examples 1 to 3 and Comparative Examples 1 to 8 was put in a cylindrical frame having a diameter of 10 cm and a height of 30 cm and cured to produce a concrete structure. The concrete structure thus produced was immersed in an aqueous sulfuric acid solution having a concentration of 30wt% for 6 months and taken out, and their compressive strength (kgf/cm2) was tested, and the results are shown in Table 3 below.

division Compressive strength (kgf/㎠) Example 1 945 Example 2 1,011 Example 3 1,315 Comparative Example 1 421 Comparative Example 2 415 Comparative Example 3 398 Comparative Example 4 405 Comparative Example 5 385 Comparative Example 6 396 Comparative Example 7 354 Comparative Example 8 345

Looking at the results of Table 3, it can be seen that Examples 1 to 3 showed little change in compressive strength even when exposed to a high acid environment for a long time.

[Experiment 4] <Test for retaining compressive strength after exposure to high flame>

The concrete mixture composition prepared through Examples 1 to 3 and Comparative Examples 1 to 8 was put in a cylindrical frame having a diameter of 10 cm and a height of 30 cm and cured to produce a concrete structure. The concrete structure thus produced was put in a kiln and heat of 800°C was applied for 3 hours, then taken out and gradually cooled to room temperature, and the compressive strength (kgf/cm2) was tested using this, and the results are shown in Table 4 below. .

division Compressive strength (kgf/㎠) Example 1 939 Example 2 1,098 Example 3 1,229 Comparative Example 1 487 Comparative Example 2 457 Comparative Example 3 481 Comparative Example 4 465 Comparative Example 5 459 Comparative Example 6 458 Comparative Example 7 325 Comparative Example 8 329

Looking at the results of Table 4, it can be seen that even when exposed to a high flame environment, Examples 1 to 3 showed little change in compressive strength.

[Experiment 5] <Test 1 for holding force with reinforcing bar>

The concrete mixture composition prepared through Examples 1 to 3 and Comparative Examples 1 to 8 was cured by placing it in a cylindrical frame having a diameter of 10 cm and a height of 5 cm with a vertical reinforcing bar having a diameter of 3 cm in the center and curing the reinforcing bar. The finished concrete structure was fabricated.

Using the reinforced-concrete structure thus produced, an experiment was conducted to separate the reinforcing bar and the concrete structure by applying pressure to the reinforcing bar while firmly fixing the concrete structure, and the fracture strength required to separate the reinforcing bar and the concrete structure (kN/ M 2) was measured, and the results are shown in Table 5 below.

division Breaking strength (kN/㎡) Example 1 23 Example 2 35 Example 3 46 Comparative Example 1 15 Comparative Example 2 14 Comparative Example 3 13 Comparative Example 4 15 Comparative Example 5 16 Comparative Example 6 14 Comparative Example 7 12 Comparative Example 8 10

Looking at the results of Table 5, it can be seen that the breaking strength of Examples 1 to 3 is significantly higher than that of Comparative Examples 1 to 8.

[Experiment 6] <Test 2 for holding force with reinforcing bar>

The concrete mixture composition prepared through Examples 1 to 3 and Comparative Examples 1 to 8 was cured by placing it in a cylindrical frame having a diameter of 10 cm and a height of 5 cm with a vertical reinforcing bar having a diameter of 3 cm in the center and curing the reinforcing bar. The finished concrete structure was fabricated.

The reinforced-concrete structure thus produced was immersed in salt water of 10 wt% concentration for 6 months and taken out, and the concrete structure was firmly fixed and pressure was applied to the reinforcing bar to separate the reinforcing bar and the concrete structure. The fracture strength (kN/m2) required to separate the concrete structure was measured, and the results are shown in Table 6 below.

division Breaking strength (kN/㎡) Example 1 21 Example 2 33 Example 3 42 Comparative Example 1 10 Comparative Example 2 10 Comparative Example 3 11 Comparative Example 4 10 Comparative Example 5 9 Comparative Example 6 9 Comparative Example 7 7 Comparative Example 8 8

Looking at the results in Table 6, it can be seen that even when exposed to a high salt environment for a long time, the breaking strength of Examples 1 to 3 is significantly higher than that of Comparative Examples 1 to 8.

[Experiment 7] <Test 3 for adhesion retention with reinforcing bar>

The concrete mixture composition prepared through Examples 1 to 3 and Comparative Examples 1 to 8 was cured by placing it in a cylindrical frame having a diameter of 10 cm and a height of 5 cm with a vertical reinforcing bar having a diameter of 3 cm in the center and curing the reinforcing bar. The finished concrete structure was fabricated.

The reinforced-concrete structure thus produced was immersed in an aqueous sulfuric acid solution having a concentration of 30 wt% for 6 months and taken out, and the concrete structure was firmly fixed and pressure was applied to the reinforcing bar to separate the reinforcing bar and the concrete structure. , The fracture strength (kN/m2) required to separate the reinforcing bar and the concrete structure was measured, and the results are shown in Table 7 below.

division Breaking strength (kN/㎡) Example 1 22 Example 2 32 Example 3 41 Comparative Example 1 8 Comparative Example 2 8 Comparative Example 3 7 Comparative Example 4 7 Comparative Example 5 8 Comparative Example 6 7 Comparative Example 7 5 Comparative Example 8 4

Looking at the results in Table 7, it can be seen that even when exposed to a high acid environment for a long period of time, the breaking strength of Examples 1 to 3 is significantly higher than that of Comparative Examples 1 to 8.

Claims (4)

Pulmonary Jeonju; Lung insulator; granite; cement; And water,
The waste electric pole is included in the form of a first waste electric pole mixture, a second waste electric pole mixture, and a third waste electric pole mixture,
The first waste electric pole mixture is formed by pulverizing the waste electric pole and mixing the first pulverized waste electric pole prepared to have an average particle diameter of 1 to 5 mm with lime powder and water,
The second waste electric pole mixture is acid-treated by immersing the second pulverized waste electric pole prepared to have an average particle diameter of 5 to 10 mm by pulverizing the waste electric pole in an aqueous sulfuric acid solution having a concentration of 20 to 50%. 2 It is formed by mixing the pulverized waste electric pole with lime powder and water,
The third waste electric pole mixture is acid-treated by immersing the third waste electric pole pulverized product prepared to have an average particle diameter of 10 to 20 mm by pulverizing the waste electric pole in an aqueous sulfuric acid solution having a concentration of 20 to 50%. 3 High-strength concrete blending composition, characterized in that after applying a flame of 1,400 to 1,500 ℃ to the pulverized waste electric pole, it is formed by mixing it with lime powder and water. delete delete delete