WO2012138088A2 - High performance concrete composition using slag - Google Patents

High performance concrete composition using slag Download PDF

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Publication number
WO2012138088A2
WO2012138088A2 PCT/KR2012/002449 KR2012002449W WO2012138088A2 WO 2012138088 A2 WO2012138088 A2 WO 2012138088A2 KR 2012002449 W KR2012002449 W KR 2012002449W WO 2012138088 A2 WO2012138088 A2 WO 2012138088A2
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weight
slag
concrete
cement
concrete composition
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PCT/KR2012/002449
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French (fr)
Korean (ko)
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WO2012138088A3 (en
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정원경
권기창
강승희
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(주)삼우아이엠씨
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Publication of WO2012138088A3 publication Critical patent/WO2012138088A3/en

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/16—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing anhydrite, e.g. Keene's cement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the present invention relates to an economical and eco-friendly concrete composition, while improving the overall strength of concrete by utilizing oxidized slag, a by-product generated in an electric furnace steelmaking process, and significantly reducing the content of cement in concrete. 8 to 16% by weight of cement, 3 to 6% by weight of water, 28 to 59% by weight of fine aggregate, 30 to 50% by weight of coarse aggregate, and high performance using slag, characterized in that 30 to 100% of the fine aggregate is slag.
  • slag refers to a solvent, a non-metallic substance, a metal oxide, or the like that floats or remains on waste water when melting iron ore or scrap in a furnace, an electric furnace, a cupola, and the like. It prevents the molten steel surface from being oxidized by air and preserves the surface.
  • the blast furnace slag and steel slag currently occurring in Korea are 9.5 million tons and 7.5 million tons, respectively, totaling 17 million tons, and electric furnace slag is about 3.4 million tons and converter slag is about 4.1 million tons.
  • the slag collected in this way is used as road roadbed, cement admixture, civil engineering material and concrete aggregate.
  • concrete aggregates are commonly used as the main components of mortar or concrete together with cement in the manufacture of concrete, but gravel, crushed stone, crushed stone, crushed sand, and natural sand are generally used, but recently, natural aggregate for concrete is depleted and insufficient.
  • strict regulations are expected in the future for the collection of river aggregates and the development of quarries based on river maintenance and environmental preservation.
  • the conventional concrete composition has a high cement content, the degree of expansion and contraction of the concrete due to the heat of hydration is severe, the dry shrinkage is easy to crack due to the large amount of dry shrinkage, the water resistance is low and the fluidity is low, so a large quantity of concrete is required There was this.
  • the present invention significantly reduces the content of cement constituting the concrete composition and replaces most of the natural aggregates with oxidized slag with electricity, thereby expanding the usability of industrial waste and preventing the deterioration of concrete quality due to depletion of natural aggregates.
  • the present invention has suppressed the expansion and contraction of the initial concrete, can significantly reduce the amount of dry shrinkage, and has developed a high-performance concrete composition that can greatly reduce the amount of water used in the concrete production by increasing the waterproof and fluidity.
  • the present invention was devised to solve the above problems, and provides a high-performance concrete composition that can expand the usability of industrial waste, prevent the deterioration of concrete quality due to the depletion of natural aggregates, as well as obtain the economic effect of cost reduction. Its purpose is to.
  • the present invention by reducing the content of cement, greatly reduces the heat of hydration generated during the concrete hydration reaction to suppress the expansion and contraction of the initial concrete, and drastically reduce the amount of dry shrinkage acting as a major cause of cracking in concrete
  • the purpose is to provide a high performance concrete composition that can be.
  • the present invention can maximize the water-tightness of the concrete to significantly increase the water resistance, and provides a high-performance concrete composition that can greatly reduce the amount of use by significantly increasing the fluidity in the solid state due to the spherical slag particles There is a purpose.
  • the present invention includes fast cement 8 to 16% by weight, water 3 to 6% by weight, fine aggregate 28 to 59% by weight, coarse aggregate 30 to 50% by weight, 30 of the fine aggregate It provides a high-performance concrete composition using slag, characterized in that ⁇ 100% is slag.
  • the particle size of the slag is 1.2 to 5.0mm, and may further include a polymer of 5 to 35% by weight of the fast cement.
  • the polymer is any one selected from the group consisting of SB (60 ⁇ 70% by weight, butadiene 30 ⁇ 40% by weight) latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA It is preferably a water-soluble liquid polymer composed of a mixture of SB (60 ⁇ 70% by weight, butadiene 30 ⁇ 40% by weight) latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA It is preferably a water-soluble liquid polymer composed of a mixture of SB (60 ⁇ 70% by weight, butadiene 30 ⁇ 40% by weight) latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA It is preferably a water-soluble liquid polymer composed of a mixture
  • the fast cement is 20 to 60% by weight of Irwin-based cemented cement, 30 to 55% by weight of Portland cement, 5 to 25% by weight of gypsum, 0.1 to 1.5% by weight of curing agent, 0.1 to 3.0% by weight of curing accelerator, dispersant It is preferable that it is a polymer reforming cement containing 0.3 to 1.5% by weight, and in order not to interfere with the hydration of Portland cement due to the incorporation of the polymer, it is preferable to contain free CaSO 4 .
  • the concrete of the present invention having the configuration as described above can achieve an effect of more than 300kgf / cm2 4 hours strength.
  • the high-performance concrete composition of the present invention unlike the existing concrete composition that the replacement ratio of the slag is very low, 11 ⁇ 30%, replaces most of the aggregate aggregate with the oxidized slag having a uniform density than natural aggregate and significantly reduce the expensive cement content As a result, it is possible to improve the overall strength of concrete, to expand the usability of industrial waste, to prevent the deterioration of concrete quality due to the depletion of natural aggregates, and to obtain the economic effect of cost reduction.
  • the high-performance concrete composition of the present invention by reducing the cement content, significantly lower the heat of hydration generated during the concrete hydration reaction to suppress the expansion and contraction of the initial concrete, the amount of dry shrinkage acting as the largest cause of cracking in concrete It can significantly reduce the water, maximize the water tightness of the concrete to increase the waterproofness, and greatly increase the fluidity can significantly reduce the amount of use in the production of concrete.
  • 1 is a comparison graph of the internal temperature measurement of concrete according to the existing concrete and the composition of the present invention.
  • Figure 2 is a comparison of dry shrinkage measurement of concrete according to the existing concrete and the composition of the present invention.
  • High-performance concrete composition of the present invention includes fast cement 8-16% by weight, water 3-6% by weight, fine aggregate 28-59% by weight, coarse aggregate 30-50% by weight, 30-100% of the fine aggregate slag It is characterized by that.
  • the present invention uses a fast-hard cement for the cement constituting the concrete composition, significantly reducing the content of the cement to 8 to 16% by weight, and replaces 30 to 100% of the natural aggregate used in the manufacture of concrete with oxidized slag This significantly increased the content of oxidized slag in the concrete.
  • the concrete may further include a polymer of 5 to 35% by weight of the fast cement
  • the polymer may be used a variety of materials that can increase the durability, preferably SB ( 60 to 70% by weight of styrene, 30 to 40% by weight of butadiene)
  • SB 60 to 70% by weight of styrene, 30 to 40% by weight of butadiene
  • a water-soluble liquid polymer including any one or more of latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA may be used.
  • the fast-hard cement is 20 ⁇ 60% by weight of excellent stability super fast cement cement, Portland cement 30 ⁇ 55% by weight, gypsum 5 ⁇ 25% by weight, coagulation regulator 0.1 ⁇ 1.5 It is preferable to use a polymer reforming cement comprising a weight%, a curing accelerator 0.1 to 3.0% by weight, and a dispersant 0.3 to 1.5% by weight.
  • the Irwin cemented carbide cements are cemented cement cemented with Arwin-based clinker containing calcium sulfo aluminate. Rapid strength development and reaction with alite, the main mineral of Portland cement, over a long period of time can be more dense, resulting in high strength.
  • the concrete composition having the above configuration can reduce the cost of cement and reduce the cost, and at the same time, the watertightness and filling properties are increased even with a small amount of cement by using an oxide slag having a uniform density than natural aggregates.
  • 4 hours strength is 300 kgf / cm ⁇ 2> or more, Preferably it is possible to manufacture high strength concrete of 400-500 kgf / cm ⁇ 2> of 4 hours strength.
  • the particle size of the slag is preferably 1.2 ⁇ 5.0mm.
  • general concrete is not a complete waterproof body, but when slag is used, the water tightness of the concrete can be maximized, and the waterproofness is greatly increased.
  • the fluidity is greatly increased in the solid state due to the effect of spherical slag particles. It can greatly reduce the quantity to be said and the reduction of such quantity can express the effects of high strength, high performance, shrinkage prevention and the like.
  • Table 1 shows the mixing examples of the existing fast-hard polymer concrete (comparative example) and the concrete composition (Examples 1 to 4) of the present invention
  • Table 2 is a mixing example of the comparative examples and Examples 1 to 4 It shows a star effect.
  • Table 3 and Figure 1 shows the concrete temperature change with time of the concrete composition of the Comparative Example and Examples 2, 4, the concrete using the composition of the present invention is less cement than conventional fast-hard polymer concrete By using, it can be seen that the internal temperature rise due to the heat of hydration is much smaller.
  • Table 4 and Figure 2 shows the concrete shrinkage strain of the composition of the Comparative Examples and Examples 2, 4, the concrete using the composition of the present invention due to the reduction of cement content concrete drying than conventional fast-rigid polymer concrete It was confirmed that the shrinkage is considerably reduced, and this reduction of the dry shrinkage is a major point that can suppress the early cracking of the concrete.
  • the waterproofness of concrete is evaluated by chlorine ion permeation test, and the electrode container is fixed on both sides of the concrete during the test, the circuit is composed of the electrodes from these containers as terminals and the electrolyte is passed through the electrolyte solution.
  • the measured voltage is converted into a current value, and the total amount of electric charge passed is expressed as Coulomb.
  • Table 5 is a table evaluating the permeability characteristics according to the amount of charge passed through the chlorine ion permeation test described above
  • Table 6 shows the measured values of the waterproofness of the Comparative Examples and Examples 2, 4 composition, the cement content of Due to the decrease and increase in the slag content, it can be seen that the concrete using the composition of the present invention has a much higher water resistance than conventional fast-hard polymer concrete.
  • the high-performance concrete composition of the present invention unlike the existing concrete composition, which has a low replacement ratio of slag, replaces most of the aggregates with an oxidized slag having a uniform density to increase the density and filling properties of the concrete.
  • cost savings can be achieved.
  • the high-performance concrete composition of the present invention can significantly reduce the heat of hydration by reducing the cement content, inhibit the expansion and contraction of the initial concrete, significantly reduce the amount of dry shrinkage, maximize the water tightness of the concrete to increase the waterproofness, fluidity In order to increase the amount of concrete used in the manufacture of concrete can be greatly reduced.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
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  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

The present invention relates to a concrete composition which is economical and environmentally friendly by: utilizing oxidizing slag which is a by-product generated during an electric arc furnace steelmaking process as a fine aggregate; enhancing the entire strength of the concrete; and drastically reducing the cement content within the concrete, and relates specifically to a high performance concrete composition using slag which comprises 8-16 weight% of rapid-hardening cement, 3-6 weight% of water, 28-59 weight% of fine aggregate, and 30-50 weight% of coarse aggregate, wherein 30-100% of the fine aggregate is slag. Strength can be enhanced and manufacturing costs can be saved by reducing the content of cement constituting the above-mentioned concrete composition and replacing most of the fine aggregate with electric arc furnace oxidizing slag.

Description

슬래그를 이용한 고성능 콘크리트 조성High Performance Concrete Composition Using Slag
본 발명은 전기로 제강공정에서 발생되는 부산물인 산화 슬래그를 잔골재로 활용하고 콘크리트 내 시멘트의 함량을 대폭 줄임으로써, 콘크리트의 전체적인 강도를 향상시키면서도 경제적이고 친환경적인 콘크리트 조성물에 관한 것으로서, 자세하게는 속경성 시멘트 8~16중량%, 물 3~6중량%, 잔골재 28~59중량%, 굵은골재 30~50중량%를 포함하며, 상기 잔골재의 30~100%가 슬래그인 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물에 대한 것이다. 상기와 같이 콘크리트 조성물을 구성하는 시멘트의 함량을 줄이고 잔골재의 대부분을 전기로 산화 슬래그로 대체함으로써 강도를 향상시키고 원가 비용을 절감할 수 있다. The present invention relates to an economical and eco-friendly concrete composition, while improving the overall strength of concrete by utilizing oxidized slag, a by-product generated in an electric furnace steelmaking process, and significantly reducing the content of cement in concrete. 8 to 16% by weight of cement, 3 to 6% by weight of water, 28 to 59% by weight of fine aggregate, 30 to 50% by weight of coarse aggregate, and high performance using slag, characterized in that 30 to 100% of the fine aggregate is slag. For concrete compositions. As described above, by reducing the content of cement constituting the concrete composition and replacing most of the fine aggregate with oxidized slag with electricity, it is possible to improve the strength and reduce the cost cost.
일반적으로, 슬래그(slag)는 용광로, 전기로, 큐폴라 등에서 철광석이나 스크랩을 녹일 때 쇳물 위에 뜨거나 찌꺼기로 남는 용제나 비금속 물질, 금속산화물 등을 지칭하며, 상기 슬래그는 원료 용융시 용강의 표면 위에 떠서 용강 표면이 공기에 의해 산화되는 것을 방지하고, 그 표면을 보존하는 역할을 한다. In general, slag refers to a solvent, a non-metallic substance, a metal oxide, or the like that floats or remains on waste water when melting iron ore or scrap in a furnace, an electric furnace, a cupola, and the like. It prevents the molten steel surface from being oxidized by air and preserves the surface.
우리나라에서 현재 발생하고 있는 고로 슬래그와 제강 슬래그는 각각 950만톤과 750만톤으로 총 1,700만톤 정도가, 제강 슬래그 중 전기로 슬래그는 340만톤, 전로슬래그는 약 410만톤 정도 생산되어 수거되고 있다. 이와 같이 수거된 슬래그는 도로노반재, 시멘트혼화제, 토목용재료 및 콘크리트용 골재 등으로 사용되고 있다.The blast furnace slag and steel slag currently occurring in Korea are 9.5 million tons and 7.5 million tons, respectively, totaling 17 million tons, and electric furnace slag is about 3.4 million tons and converter slag is about 4.1 million tons. The slag collected in this way is used as road roadbed, cement admixture, civil engineering material and concrete aggregate.
한편, 콘크리트용 골재는 콘크리트 제조시 시멘트와 함께 모르타르나 콘크리트를 구성하는 주요성분으로 자갈, 쇄석, 부순돌, 부순모래, 천연모래 등이 일반적으로 사용되고 있으나, 최근에는 콘크리트용 천연골재가 고갈, 부족할 뿐만 아니라, 향후에는 하천유지관리 및 환경보존에 따른 하천골재 채취 및 석산 개발에 엄격한 규제가 예상된다. On the other hand, concrete aggregates are commonly used as the main components of mortar or concrete together with cement in the manufacture of concrete, but gravel, crushed stone, crushed stone, crushed sand, and natural sand are generally used, but recently, natural aggregate for concrete is depleted and insufficient. In addition, strict regulations are expected in the future for the collection of river aggregates and the development of quarries based on river maintenance and environmental preservation.
따라서, 콘크리트 제조시 주요 구성성분으로 사용되는 골재에 대한 대체재료로서 산화 슬래그를 이용하는 기술이 연구되어 왔으나, 기존의 산화 슬래그를 이용한 콘크리트 조성물은 슬래그의 대체비율이 11~30%로 매우 낮을 뿐만 아니라, 시멘트의 함량이 높아 단가를 낮추는데 한계가 있었다. Therefore, the technology of using oxidized slag as a substitute material for the aggregate used as the main component in the concrete manufacturing has been studied, but the conventional concrete composition using oxidized slag has a very low replacement ratio of 11 ~ 30% as well as As the cement content is high, there is a limit to lower the unit price.
또한, 종래의 콘크리트 조성물은 시멘트 함량이 높아 수화열로 인한 콘크리트의 팽창, 수축의 정도가 심하고, 건조 수축량이 높아 균열이 발생하기 쉬웠으며, 방수성이 떨어지고 유동성이 작아 콘크리트 제조시 많은 물량이 필요하다는 문제점이 있었다. In addition, the conventional concrete composition has a high cement content, the degree of expansion and contraction of the concrete due to the heat of hydration is severe, the dry shrinkage is easy to crack due to the large amount of dry shrinkage, the water resistance is low and the fluidity is low, so a large quantity of concrete is required There was this.
이에, 본 발명은 콘크리트 조성물을 구성하는 시멘트의 함량을 대폭 줄이고 천연골재의 대부분을 전기로 산화 슬래그로 대체함으로써 산업폐기물의 사용성을 확대하고, 천연골재 고갈에 따른 콘크리트 품질저하를 방지할 뿐 아니라 원가 절감의 경제적인 효과도 얻을 수 있는 고성능 콘크리트 조성물을 개발하였다.Accordingly, the present invention significantly reduces the content of cement constituting the concrete composition and replaces most of the natural aggregates with oxidized slag with electricity, thereby expanding the usability of industrial waste and preventing the deterioration of concrete quality due to depletion of natural aggregates. We have developed a high-performance concrete composition that can achieve the economic effect of savings.
또한, 본 발명은 초기 콘크리트의 팽창과 수축을 억제하고, 건조수축량을 획기적으로 줄일 수 있으며, 방수성과 유동성이 크게 증가되어 콘크리트 제조시 사용 물량을 크게 줄일 수 있는 고성능 콘크리트 조성물을 개발하였다.In addition, the present invention has suppressed the expansion and contraction of the initial concrete, can significantly reduce the amount of dry shrinkage, and has developed a high-performance concrete composition that can greatly reduce the amount of water used in the concrete production by increasing the waterproof and fluidity.
본 발명은 상술한 문제점을 해결하기 위하여 창안된 것으로, 산업폐기물의 사용성을 확대하고, 천연골재 고갈에 따른 콘크리트 품질저하를 방지할 뿐 아니라 원가 절감의 경제적인 효과도 얻을 수 있는 고성능 콘크리트 조성물을 제공하는데 그 목적이 있다.The present invention was devised to solve the above problems, and provides a high-performance concrete composition that can expand the usability of industrial waste, prevent the deterioration of concrete quality due to the depletion of natural aggregates, as well as obtain the economic effect of cost reduction. Its purpose is to.
또한, 본 발명은 시멘트 함량을 줄임으로써, 콘크리트 수화반응 시 내부에서 발생되는 수화열을 크게 낮추어 초기 콘크리트의 팽창과 수축을 억제하고, 콘크리트에서 균열발생에 가장 큰 원인으로 작용하는 건조수축량을 획기적으로 줄일 수 있는 고성능 콘크리트 조성물을 제공하는데 그 목적이 있다.In addition, the present invention by reducing the content of cement, greatly reduces the heat of hydration generated during the concrete hydration reaction to suppress the expansion and contraction of the initial concrete, and drastically reduce the amount of dry shrinkage acting as a major cause of cracking in concrete The purpose is to provide a high performance concrete composition that can be.
또한, 본 발명은 콘크리트의 수밀성을 극대화 시킬 수 있어 방수성이 획기적으로 증가되고, 구상의 슬래그 입자로 인하여 굳지 않은 상태에서의 유동성이 크게 증가되어 사용 물량을 크게 줄일 수 있는 고성능 콘크리트 조성물을 제공하는데 그 목적이 있다.In addition, the present invention can maximize the water-tightness of the concrete to significantly increase the water resistance, and provides a high-performance concrete composition that can greatly reduce the amount of use by significantly increasing the fluidity in the solid state due to the spherical slag particles There is a purpose.
상기와 같은 목적을 달성하기 위하여, 본 발명은 속경성 시멘트 8~16중량%, 물 3~6중량%, 잔골재 28~59중량%, 굵은골재 30~50중량%를 포함하며, 상기 잔골재의 30~100%가 슬래그인 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물을 제공한다. In order to achieve the above object, the present invention includes fast cement 8 to 16% by weight, water 3 to 6% by weight, fine aggregate 28 to 59% by weight, coarse aggregate 30 to 50% by weight, 30 of the fine aggregate It provides a high-performance concrete composition using slag, characterized in that ~ 100% is slag.
상기 슬래그의 입도는 1.2~5.0mm인 것이 바람직하며, 상기 속경성 시멘트 중량대비 5~35%의 폴리머를 추가로 포함할 수 있다. 이때, 상기 폴리머는 SB(스틸렌 60~70중량%, 부타디엔 30~40중량%) 라텍스, PAE 에멀젼, EVA 에멀젼, 에폭시수지, 아크릴수지, 폴리에스터, 수용성 MMA로 이루어진 그룹으로부터 선택되는 어느 하나 또는 이들의 혼합물로 이루어진 수용성 액상 폴리머인 것이 바람직하다. It is preferable that the particle size of the slag is 1.2 to 5.0mm, and may further include a polymer of 5 to 35% by weight of the fast cement. At this time, the polymer is any one selected from the group consisting of SB (60 ~ 70% by weight, butadiene 30 ~ 40% by weight) latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA It is preferably a water-soluble liquid polymer composed of a mixture of
이때, 상기 속경성 시멘트는 아윈계 초속경시멘트 20~60중량%, 포틀랜드 시멘트 30~55중량%, 석고 5~25중량%, 응결조절제 0.1~1.5중량%, 경화촉진제 0.1~3.0중량%, 분산제 0.3~1.5중량%를 포함하는 폴리머 개질용 시멘트인 것이 바람직하며, 상기 폴리머의 혼입으로 인하여 포틀랜드 시멘트의 수화에 방해를 주지 않기 위하여, 유리 CaSO4를 함유하는 것이 바람직하다. At this time, the fast cement is 20 to 60% by weight of Irwin-based cemented cement, 30 to 55% by weight of Portland cement, 5 to 25% by weight of gypsum, 0.1 to 1.5% by weight of curing agent, 0.1 to 3.0% by weight of curing accelerator, dispersant It is preferable that it is a polymer reforming cement containing 0.3 to 1.5% by weight, and in order not to interfere with the hydration of Portland cement due to the incorporation of the polymer, it is preferable to contain free CaSO 4 .
또한, 상기와 같은 구성을 가지는 본 발명의 콘크리트는 4시간 강도가 300kgf/㎠ 이상의 효과를 얻을 수 있다. In addition, the concrete of the present invention having the configuration as described above can achieve an effect of more than 300kgf / ㎠ 4 hours strength.
본 발명의 고성능 콘크리트 조성물은 슬래그의 대체비율이 11~30%로 매우 낮았던 기존의 콘크리트 조성물과 달리, 잔골재의 대부분을 천연골재보다 균일한 밀도를 가지는 산화 슬래그로 대체하고 고가인 시멘트 함량을 대폭 줄임으로써, 콘크리트의 전체적인 강도를 향상시킬 수 있으며, 산업폐기물의 사용성을 확대하고, 천연골재 고갈에 따른 콘크리트 품질저하를 방지할 뿐 아니라 원가 절감의 경제적인 효과도 얻을 수 있다. The high-performance concrete composition of the present invention, unlike the existing concrete composition that the replacement ratio of the slag is very low, 11 ~ 30%, replaces most of the aggregate aggregate with the oxidized slag having a uniform density than natural aggregate and significantly reduce the expensive cement content As a result, it is possible to improve the overall strength of concrete, to expand the usability of industrial waste, to prevent the deterioration of concrete quality due to the depletion of natural aggregates, and to obtain the economic effect of cost reduction.
또한, 본 발명의 고성능 콘크리트 조성물은 시멘트 함량을 줄임으로써, 콘크리트 수화반응 시 내부에서 발생되는 수화열을 크게 낮추어 초기 콘크리트의 팽창과 수축을 억제하고, 콘크리트에서 균열발생에 가장 큰 원인으로 작용하는 건조수축량을 획기적으로 줄일 수 있으며, 콘크리트의 수밀성을 극대화시켜 방수성을 증가시키고, 유동성을 크게 증가시켜 콘크리트 제조시 사용 물량을 크게 줄일 수 있다. In addition, the high-performance concrete composition of the present invention by reducing the cement content, significantly lower the heat of hydration generated during the concrete hydration reaction to suppress the expansion and contraction of the initial concrete, the amount of dry shrinkage acting as the largest cause of cracking in concrete It can significantly reduce the water, maximize the water tightness of the concrete to increase the waterproofness, and greatly increase the fluidity can significantly reduce the amount of use in the production of concrete.
도 1은 기존의 콘크리트와 본 발명의 조성물에 따른 콘크리트 내부 온도 측정 비교 그래프이다.1 is a comparison graph of the internal temperature measurement of concrete according to the existing concrete and the composition of the present invention.
도 2는 기존의 콘크리트와 본 발명의 조성물에 따른 콘크리트의 건조수축 측정 비교 사진이다.Figure 2 is a comparison of dry shrinkage measurement of concrete according to the existing concrete and the composition of the present invention.
이하 본 발명에 따른 바람직한 실시예를 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야 한다.Hereinafter, preferred embodiments of the present invention will be described in detail. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to ordinary or dictionary meanings, but should be construed as meanings and concepts consistent with the technical spirit of the present invention.
본 발명의 고성능 콘크리트 조성물은 속경성 시멘트 8~16중량%, 물 3~6중량%, 잔골재 28~59중량%, 굵은골재 30~50중량%를 포함하며, 상기 잔골재의 30~100%가 슬래그인 것을 특징으로 한다. High-performance concrete composition of the present invention includes fast cement 8-16% by weight, water 3-6% by weight, fine aggregate 28-59% by weight, coarse aggregate 30-50% by weight, 30-100% of the fine aggregate slag It is characterized by that.
종래의 산화 슬래그를 이용한 콘크리트 조성물은 슬래그의 천연 골재 대체비율이 11~30% 정도로 매우 낮으며, 콘크리트의 강도 유지를 위하여 시멘트의 함량을 높게 유지할 수 밖에 없어 제조 단가를 낮추는데도 한계가 있었다. Conventional concrete composition using the oxidized slag is very low as 11 ~ 30% replacement ratio of the natural aggregate of the slag, there was a limit to lower the manufacturing cost because it can not only maintain the content of cement to maintain the strength of the concrete.
그러나, 본 발명은 콘크리트 조성물을 구성하는 시멘트를 속경성 시멘트를 사용하며, 상기 시멘트의 함량을 8~16중량%으로 대폭 줄이고, 콘크리트 제조에 사용되는 천연골재의 30~100%를 산화 슬래그로 대체하여, 콘크리트 내 산화 슬래그의 함량을 크게 증가시켰다. However, the present invention uses a fast-hard cement for the cement constituting the concrete composition, significantly reducing the content of the cement to 8 to 16% by weight, and replaces 30 to 100% of the natural aggregate used in the manufacture of concrete with oxidized slag This significantly increased the content of oxidized slag in the concrete.
한편, 콘크리트의 내구성을 높이기 위하여, 상기 속경성 시멘트 중량대비 5~35%의 폴리머를 추가로 포함할 수 있으며, 이때 상기 폴리머는 내구성을 높일 수 있는 다양한 물질이 사용될 수 있으나, 바람직하게는 SB(스틸렌 60~70중량%, 부타디엔 30~40중량%) 라텍스, PAE 에멀젼, EVA 에멀젼, 에폭시수지, 아크릴수지, 폴리에스터, 수용성 MMA 중 어느 하나 이상을 포함하는 수용성 액상 폴리머가 사용될 수 있다.On the other hand, in order to increase the durability of the concrete, it may further include a polymer of 5 to 35% by weight of the fast cement, the polymer may be used a variety of materials that can increase the durability, preferably SB ( 60 to 70% by weight of styrene, 30 to 40% by weight of butadiene) A water-soluble liquid polymer including any one or more of latex, PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, water-soluble MMA may be used.
한편, 상기 수용성 액상 폴리머를 사용함에 있어서, 상기 속경성 시멘트는 안정성이 뛰어난 아윈계 초속경시멘트 20~60중량%, 포틀랜드 시멘트 30~55중량%, 석고 5~25중량%, 응결조절제 0.1~1.5중량%, 경화촉진제 0.1~3.0중량%, 분산제 0.3~1.5중량%를 포함하는 폴리머 개질용 시멘트를 사용하는 것이 바람직하다. On the other hand, in using the water-soluble liquid polymer, the fast-hard cement is 20 ~ 60% by weight of excellent stability super fast cement cement, Portland cement 30 ~ 55% by weight, gypsum 5 ~ 25% by weight, coagulation regulator 0.1 ~ 1.5 It is preferable to use a polymer reforming cement comprising a weight%, a curing accelerator 0.1 to 3.0% by weight, and a dispersant 0.3 to 1.5% by weight.
상기 아윈계 초속경시멘트는 칼슘설포알루미네이트를 함유한 아윈계 클링커를 주체로 하는 초속경 시멘트로서, 시멘트의 알루미네이계 광물이 물과 반죽하면 반응하여 ‘에트링 가이트’라는 수화광물을 형성함으로써 급속한 강도발현, 장기간에 걸쳐 포틀랜트시멘트의 주광물인 알라이트와의 반응으로 더욱 치밀하게 되어 높은 강도를 발현할 수 있다. The Irwin cemented carbide cements are cemented cement cemented with Arwin-based clinker containing calcium sulfo aluminate. Rapid strength development and reaction with alite, the main mineral of Portland cement, over a long period of time can be more dense, resulting in high strength.
또한, 상기 폴리머의 혼입으로 인하여 포틀랜드 시멘트의 수화에 방해를 주지 않기 위하여, 아윈계 클링커에는 함유되어있지 않은 유리 CaSO4를 함유하는 것이 바람직하다. Further, in order not to interfere with the hydration of the Portland cement due to the incorporation of the polymer, it is preferable to contain free CaSO 4 which is not contained in the Arwin-based clinker.
상기와 같은 구성을 가진 콘크리트 조성물은, 고가의 시멘트를 줄여 원가를 절감하는 효과를 얻을 수 있으며, 동시에 천연골재보다 균일한 밀도를 가지는 산화 슬래그를 이용함으로써 적은 시멘트량으로도 수밀성과 충전성이 증대되어 4시간 강도가 300kgf/㎠ 이상으로서, 바람직하게는 4시간 강도가 400~500kgf/㎠인 고강도 콘크리트의 제조가 가능하다. 이때, 콘크리트의 강도 유지를 위하여, 상기 슬래그의 입도는 1.2~5.0mm인 것이 바람직하다. The concrete composition having the above configuration can reduce the cost of cement and reduce the cost, and at the same time, the watertightness and filling properties are increased even with a small amount of cement by using an oxide slag having a uniform density than natural aggregates. 4 hours strength is 300 kgf / cm <2> or more, Preferably it is possible to manufacture high strength concrete of 400-500 kgf / cm <2> of 4 hours strength. At this time, in order to maintain the strength of the concrete, the particle size of the slag is preferably 1.2 ~ 5.0mm.
또한, 이와 같은 시멘트 함량의 저감은 콘크리트 수화반응 시 내부에서 발생되는 수화열을 크게 낮추어 초기 콘크리트의 팽창과 수축을 억제하는 효과를 얻을 수 있으며, 콘크리트에서 균열발생에 가장 큰 원인으로 작용하는 건조 수축량 또한 획기적으로 줄일 수 있다. In addition, such a reduction in cement content can greatly reduce the heat of hydration generated during the concrete hydration reaction, thereby suppressing the expansion and contraction of the initial concrete, and also the amount of dry shrinkage that acts as a major cause of cracking in concrete. It can be greatly reduced.
또한, 일반적인 콘크리트는 완전한 방수체가 아니나 슬래그를 사용할 경우 콘크리트의 수밀성을 극대화 시킬 수 있어 방수성이 획기적으로 증가되며, 구상의 슬래그 입자의 효과로 굳지 않은 상태에서 유동성이 크게 증가되어 일반 콘크리트 제조 시 사용되어야 하는 물량을 크게 줄일 수 있으며 이러한 물량의 저감은 고강도, 고성능, 수축방지 등의 효과를 발현할 수 있다. In addition, general concrete is not a complete waterproof body, but when slag is used, the water tightness of the concrete can be maximized, and the waterproofness is greatly increased. In addition, the fluidity is greatly increased in the solid state due to the effect of spherical slag particles. It can greatly reduce the quantity to be said and the reduction of such quantity can express the effects of high strength, high performance, shrinkage prevention and the like.
하기 표 1은 기존의 속경성 폴리머 콘크리트(비교예)와 본 발명의 콘크리트 조성물(실시예1~4)의 배합 사례를 표시한 것이며, 표 2는 상기 비교예와 실시예 1~4의 배합사례별 효과를 나타낸 것이다. Table 1 shows the mixing examples of the existing fast-hard polymer concrete (comparative example) and the concrete composition (Examples 1 to 4) of the present invention, Table 2 is a mixing example of the comparative examples and Examples 1 to 4 It shows a star effect.
표 1
시방배합 W/B S/a 단위중량(kg/㎥)
시멘트 물 라텍스 잔골재 굵은골재
비교예 38% 55% 360 76 115 914 760
실시예1 34% 47% 300 41 96 1,158 972
실시예2 34% 47% 300 58 64 1,182 992
실시예3 36% 47% 260 39 83 1,219 1,023
실시예4 38% 47% 260 59 55 1,240 1,041
Table 1
Specification W / B S / a Unit weight (kg / ㎥)
cement water Latex Fine aggregate Coarse aggregate
Comparative example 38% 55% 360 76 115 914 760
Example 1 34% 47% 300 41 96 1,158 972
Example 2 34% 47% 300 58 64 1,182 992
Example 3 36% 47% 260 39 83 1,219 1,023
Example 4 38% 47% 260 59 55 1,240 1,041
<콘크리트 배합사례><Concrete formulation example>
표 2
구분 슬럼프(mm) 공기량(%) 압축강도(kgf/㎠) 휨강도(kgf/㎠)
4시간 1일 4시간 1일
비교예 210 5.5 281 378 48 55
실시예1 230 4 348.1 460.0 77.9 81.4
실시예2 200 4 420.7 499.2 82.2 87.2
실시예3 180 3.6 337.0 430.0 83.0 86.1
실시예4 180 3.9 369.7 448.3 73.2 78.6
TABLE 2
division Slump (mm) Air volume (%) Compressive strength (kgf / ㎠) Flexural strength (kgf / ㎠)
4 hours 1 day 4 hours 1 day
Comparative example 210 5.5 281 378 48 55
Example 1 230 4 348.1 460.0 77.9 81.4
Example 2 200 4 420.7 499.2 82.2 87.2
Example 3 180 3.6 337.0 430.0 83.0 86.1
Example 4 180 3.9 369.7 448.3 73.2 78.6
<콘크리트 배합사례별 효과검정><Effect test by concrete mixing case>
상기 표 1, 2을 살펴보면, 본 발명의 조성물을 사용한 콘크리트가 기존의 속경성 폴리머 콘크리트보다 더 적은 시멘트를 사용하고도 훨씬 더 높은 압축 강도를 보이는 것을 알 수 있다. Looking at Tables 1 and 2, it can be seen that the concrete using the composition of the present invention exhibits much higher compressive strength even with less cement than conventional fast-hard polymer concrete.
한편, 하기 표 3과 도 1은 상기 비교예와 실시예 2, 4의 콘크리트 조성물의 시간에 따른 콘크리트 온도 변화를 나타낸 것으로서, 본 발명의 조성물을 사용한 콘크리트가 기존의 속경성 폴리머 콘크리트보다 더 적은 시멘트를 사용함으로 인하여 수화열로 인한 내부 온도 상승이 훨씬 작은 것을 알 수 있다. On the other hand, Table 3 and Figure 1 shows the concrete temperature change with time of the concrete composition of the Comparative Example and Examples 2, 4, the concrete using the composition of the present invention is less cement than conventional fast-hard polymer concrete By using, it can be seen that the internal temperature rise due to the heat of hydration is much smaller.
표 3
구분 비교예 실시예2 실시예4
최대온도 32.7℃ 30.3℃ 30.4℃
TABLE 3
division Comparative example Example 2 Example 4
Temperature 32.7 ℃ 30.3 ℃ 30.4 ℃
하기 표 4와 도 2는 상기 비교예와 실시예 2, 4의 조성물의 콘크리트 건조수축 변형률을 보여주는 것으로서, 시멘트 함량의 감소로 인하여 본 발명의 조성물을 사용한 콘크리트가 기존의 속경성 폴리머 콘크리트보다 콘크리트 건조 수축량이 상당히 저감되는 것을 확인할 수 있었으며, 이러한 건조수축의 저감은 콘크리트 초기 균열발생을 억제할 수 있는 주요한 사항이다. Table 4 and Figure 2 shows the concrete shrinkage strain of the composition of the Comparative Examples and Examples 2, 4, the concrete using the composition of the present invention due to the reduction of cement content concrete drying than conventional fast-rigid polymer concrete It was confirmed that the shrinkage is considerably reduced, and this reduction of the dry shrinkage is a major point that can suppress the early cracking of the concrete.
표 4
구분 비교예 실시예2 실시예4
건조수축 변형률(%) 0.094 0.02 0.015
Table 4
division Comparative example Example 2 Example 4
Dry Strain Strain (%) 0.094 0.02 0.015
한편, 콘크리트의 방수성은 염소이온 투과시험에 의해 평가되며 시험 시 콘크리트 양측에 전극용기를 고정시키고, 이들 용기에서 나온 전극을 단자로 해서 회로를 구성한 후 전해질 용액을 통과시켜 측정된 전압량에 따라 콘크리트의 투수정도를 평가하는 방법으로서, 측정된 전압은 전류치로 환산되며 이때 통과된 총 전하량을 쿨롱이라 표시한다.On the other hand, the waterproofness of concrete is evaluated by chlorine ion permeation test, and the electrode container is fixed on both sides of the concrete during the test, the circuit is composed of the electrodes from these containers as terminals and the electrolyte is passed through the electrolyte solution. As a method of evaluating the degree of permeability, the measured voltage is converted into a current value, and the total amount of electric charge passed is expressed as Coulomb.
하기 표 5는 상기에서 설명한 염소이온 투과시험을 통하여 측정한 통과전하량에 따른 투수특성을 평가한 표이며, 표 6은 비교예와 실시예 2, 4 조성물의 방수성 측정값을 보여주는 것으로서, 시멘트 함량의 감소와 슬래그 함량의 증가로 인하여 본 발명의 조성물을 사용한 콘크리트가 기존의 속경성 폴리머 콘크리트보다 방수성이 매우 증가하였음을 알 수 있다. Table 5 below is a table evaluating the permeability characteristics according to the amount of charge passed through the chlorine ion permeation test described above, Table 6 shows the measured values of the waterproofness of the Comparative Examples and Examples 2, 4 composition, the cement content of Due to the decrease and increase in the slag content, it can be seen that the concrete using the composition of the present invention has a much higher water resistance than conventional fast-hard polymer concrete.
표 5
쿨롱 투수등급
4000이상 투수성 높음
2000～4000 보통
1000～2000 낮음
100～1000 매우 낮음
100이하 불투수성
Table 5
coulomb Permeability Rating
More than 4000 High permeability
2000-4000 usually
1000-2000 lowness
100-1000 Very low
100 or less Impervious
표 6
구분 비교예 실시예2 실시예4
방수성 측정값(쿨롱) 1,106 116 352
Table 6
division Comparative example Example 2 Example 4
Waterproof measurement (Coulomb) 1,106 116 352
상기에서 살펴본 바와 같이, 본 발명의 고성능 콘크리트 조성물은 슬래그의 대체비율이 낮았던 기존의 콘크리트 조성물과 달리, 잔골재의 대부분을 균일한 밀도를 가지는 산화 슬래그로 대체하여 콘크리트의 밀도와 충전성을 높여 콘크리트의 강도를 향상시키고 그에 따라 고가인 시멘트 함량을 대폭 줄임으로써, 원가를 절감하는 효과를 얻을 수 있다. As described above, the high-performance concrete composition of the present invention, unlike the existing concrete composition, which has a low replacement ratio of slag, replaces most of the aggregates with an oxidized slag having a uniform density to increase the density and filling properties of the concrete. By improving the strength and thus significantly reducing the expensive cement content, cost savings can be achieved.
또한, 본 발명의 고성능 콘크리트 조성물은 시멘트 함량을 줄임으로써, 수화열을 크게 낮추어 초기 콘크리트의 팽창과 수축을 억제하고, 건조수축량을 획기적으로 줄일 수 있으며, 콘크리트의 수밀성을 극대화시켜 방수성을 증가시키고, 유동성을 증가시켜 콘크리트 제조시 사용 물량을 크게 줄일 수 있다. In addition, the high-performance concrete composition of the present invention can significantly reduce the heat of hydration by reducing the cement content, inhibit the expansion and contraction of the initial concrete, significantly reduce the amount of dry shrinkage, maximize the water tightness of the concrete to increase the waterproofness, fluidity In order to increase the amount of concrete used in the manufacture of concrete can be greatly reduced.
본 발명은 상술한 특정의 실시예 및 설명에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능하며, 그와 같은 변형은 본 발명의 보호 범위 내에 있게 된다.The present invention is not limited to the above specific embodiments and descriptions, and various modifications can be made by those skilled in the art without departing from the gist of the invention as claimed in the claims. Such variations are within the protection scope of the present invention.

Claims (7)

  1. 속경성 시멘트 8~16중량%, 물 3~6중량%, 잔골재 28~59중량%, 굵은골재 30~50중량%를 포함하며, 상기 잔골재의 30~100%가 슬래그인 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물.8 to 16% by weight of cement, 3 to 6% by weight of water, 28 to 59% by weight of fine aggregate, 30 to 50% by weight of coarse aggregate, and the slag, characterized in that 30 to 100% of the fine aggregate is slag. High performance concrete composition.
  2. 제1항에 있어서, The method of claim 1,
    상기 슬래그의 입도가 1.2~5.0mm인 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물.High-performance concrete composition using the slag, characterized in that the particle size of the slag is 1.2 ~ 5.0mm.
  3. 제1항에 있어서, The method of claim 1,
    상기 속경성 시멘트 중량대비 5~35%의 폴리머를 추가로 포함하는 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물.High-performance concrete composition using slag characterized in that it further comprises a polymer of 5 to 35% by weight of the fast cement.
  4. 제3항에 있어서, The method of claim 3,
    상기 폴리머가 SB(스틸렌 60~70중량%, 부타디엔 30~40중량%) 라텍스, PAE 에멀젼, EVA 에멀젼, 에폭시수지, 아크릴수지, 폴리에스터, 수용성 MMA로 이루어진 그룹으로부터 선택되는 어느 하나 또는 이들의 혼합물로 이루어진 수용성 액상 폴리머인 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물.The polymer is any one selected from the group consisting of SB (60 to 70% by weight of styrene, 30 to 40% by weight of butadiene), PAE emulsion, EVA emulsion, epoxy resin, acrylic resin, polyester, and water-soluble MMA High-performance concrete composition using a slag, characterized in that the water-soluble liquid polymer consisting of.
  5. 제3항 또는 제4항에 있어서, The method according to claim 3 or 4,
    상기 속경성 시멘트가 아윈계 초속경시멘트 20~60중량%, 포틀랜드 시멘트 30~55중량%, 석고 5~25중량%, 응결조절제 0.1~1.5중량%, 경화촉진제 0.1~3.0중량%, 분산제 0.3~1.5중량%를 포함하는 폴리머 개질용 시멘트인 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물.The fast-hard cement is 20-60% by weight of Irwin-based superhard cement, 30-55% by weight of Portland cement, 5-25% by weight of gypsum, 0.1-1.5% by weight of coagulant, 0.1-3.0% by weight of curing accelerator, 0.3- of dispersant High-performance concrete composition using a slag, characterized in that the cement for polymer modification containing 1.5% by weight.
  6. 제3항 또는 제4항에 있어서, The method according to claim 3 or 4,
    상기 폴리머의 혼입으로 인하여 포틀랜드 시멘트의 수화에 방해를 주지 않기 위하여, 유리 CaSO4를 함유하는 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물.High performance concrete composition using slag, characterized in that it contains free CaSO 4 in order not to interfere with the hydration of Portland cement due to the incorporation of the polymer.
  7. 제3항 또는 제4항에 있어서, The method according to claim 3 or 4,
    4시간 강도가 300kgf/㎠ 이상인 것을 특징으로 하는 슬래그를 이용한 고성능 콘크리트 조성물.High-performance concrete composition using slag, characterized in that the strength of 4 hours or more 300kgf / ㎠.
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