KR20030039813A - Powder admixture for crushing industrial by-products - Google Patents

Powder admixture for crushing industrial by-products Download PDF

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KR20030039813A
KR20030039813A KR1020010070880A KR20010070880A KR20030039813A KR 20030039813 A KR20030039813 A KR 20030039813A KR 1020010070880 A KR1020010070880 A KR 1020010070880A KR 20010070880 A KR20010070880 A KR 20010070880A KR 20030039813 A KR20030039813 A KR 20030039813A
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powder
concrete
admixture
weight
stone
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KR1020010070880A
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KR100441640B1 (en
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임채영
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(주)한일
임채영
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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
    • 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
    • C04B18/12—Waste materials; Refuse from quarries, mining or the like
    • 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
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/04—Heat treatment
    • 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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

PURPOSE: Provided are concrete admixture powder which has high strength, workability, and low costs by using industrial byproducts, stone and limestone powders, as main materials. CONSTITUTION: The concrete admixture powder contains 20-35wt.% of stone powder generated in stone processing, 20-35wt.% of limestone powder, 10-20wt.% of fly ash and 10-20wt.% of blast furnace slag, wherein the stone and limestone powders are obtained by drying at 100-150deg.C and grinding to be a specific surface area of 4500-6000cm2/g, and the surface area of fly ash and blast furnace slag are 4000-5000cm2/g and4500-6000cm2/g, respectively. The 10-30wt.%(based on the cement) of admixture is added to cement for concrete mixing.

Description

산업부산물을 가공 미분쇄한 콘크리트용 분말혼화재{omitted}Powder admixture for crushing industrial by-products

본 발명은 산업부산물을 건조,가공후 미분쇄한 콘크리트용 분말혼화재에 관한 것으로서 보다 구체적으로는 석재 미분말, 석회석 분말 재료을 주재료로하고 고로슬래그 미분말, 플라이애쉬,등의 재료를 부재료로 하는 콘크리트용 분말혼화재에 관한 것이다.The present invention relates to a powder mixed admixture for pulverizing the industrial by-products after grinding and processing. More specifically, the present invention relates to concrete powders comprising stone fine powder and limestone powder as main materials and blast furnace slag fine powder, fly ash, etc. It is about a mixed material.

최근에 콘크리트 구조물의 대형화, 고층화가 되어 가는 추세로 콘크리트의 시공성, 콘크리트강도의 향상을 추구하는 현실에서 콘크리트용 혼화재의 사용은 필수조건이 되고 있다. 현재 사용되고 있는 실리카흄, 고로슬래그 미분말, 정제 플라이애쉬, 무수석고 등의 재료들은 고가의 수입재료 이거나 공급처의 공급 능력 및 가공량에 따라서 가격의 변동이 심하여 콘크리트 기초 재료로서 혼화재의 가격상승으로 인하여 콘크리트 구조물의 시공비 상승으로 요인이 된다.Recently, the use of concrete admixtures has become a prerequisite in the reality that concrete construction structure and concrete strength have been pursued with the trend of increasing the size and height of concrete structures. Currently used materials such as silica fume, blast furnace slag fine powder, refined fly ash, and anhydrous gypsum are expensive imported materials or the price fluctuates depending on the supply capacity and processing capacity of the supplier. This is due to the increase in construction cost.

이러한 콘크리트 혼화재의 재료단가를 최소화하기 위하여 석재 공장에서 발생하는 산업폐기물인 석재 미분말 재료와 석회석 가공 생산시 미분쇄분으로 배출되는 석회석 분말재료, 에너지 공급을 하기 위하여 사용되고 배출되는 연소 플라이애쉬, 고로슬래그 미분말등의 재료을 사용하므로써 재료비 절감효과가 어떤 재료보다도 우수하다. 또한 콘크리트 작업성의 개선 및 워커빌리티를 향상시켜 시공성 향상에 따른 내구성, 장기 강도의 증가, 화학저항성, 동결융해 저항성향상등 콘크리트의 고품질화가 가능하다. 특히 콘크리트 타설시 가장 문제화되고 있는 균열방지와 수밀성이 우수하기 때문에 방수 콘크리트로 역할도 가능하다. 한편 산업체에서는 각종 제품 생산시 발생되는 산업폐기물을 대부분 매립 또는 다른 가공처리에 따른 2차 환경 오염을 유발하고 있는 실정이므로 산업폐기물을 재활용할 수 있는 기술이 절실히 필요한 실정이다.In order to minimize the material cost of the concrete admixture, the fine powder of stone which is industrial waste generated in the stone factory and the limestone powder material which is discharged as fine grinding in the production of limestone processing, the combustion fly ash and blast furnace slag used for energy supply By using materials such as fine powder, the material cost reduction effect is superior to any materials. In addition, by improving the concrete workability and workability, it is possible to improve the quality of concrete such as durability, increase of long-term strength, chemical resistance, and freeze-thawing resistance. In particular, since it is excellent in crack prevention and watertightness, which is the most problematic problem when placing concrete, it can also serve as waterproof concrete. On the other hand, the industry is in need of the technology that can recycle industrial waste, since most of the industrial waste generated in the production of various products causes secondary environmental pollution due to landfill or other processing.

종래의 콘크리트 혼화재는 보편적으로 포졸란 재료인 플라이애쉬, 규산, 실리카흄과 감재수경성이 있는 고로슬래그 미분말을 혼합하는 재료들이며 단순히 강도증진의 목적으로 사용되고 있는 실정이다.Conventional concrete admixtures are commonly used materials for mixing pozzolanic materials such as fly ash, silicic acid, silica fume, and hardened blast furnace slag powder, which are simply used for the purpose of increasing strength.

본 발명의 목적은 석재 가공시 발생하는 미분말과 석회석 가공생산시 발생하는 분말이 전량 매립 처리되는 산업부산물을 1차건조, 2차분쇄 가공기술을 통하여 혼화재로 제조하므로써 가격이 저렴하고 우수한 품질을 지닌 콘크리트용 분말혼화재를 제공하고자 한다.It is an object of the present invention to manufacture industrial by-products in which the fine powders generated during stone processing and the powders generated during the production of limestone are landfilled with mixed materials through primary drying and secondary grinding processing techniques, which are inexpensive and have excellent quality. To provide a powder admixture for concrete.

본 발명의 목적을 달성하기 위하여 석재 가공시 발생되는 미분말 재료를 1차 건조시 2000∼3000㎠/g 분말도의 재료를 2차 분쇄하여 4500∼6000㎠/g 분말도로 가공하여 콘크리트용 분말혼화재 20∼35중량%와 석회석 가공 생산시 발생하는 분말재료를 1차 건조, 2차 분쇄하여 4500∼6000㎠/g분말도로 가공하여 콘크리트용 분말혼화재 20∼35중량% 와 4000∼5000㎠/g의 분말도를 가진 플라이애쉬 10∼20중량%와 4500∼6000㎠/g의 분말도를 가진 고로슬래그 미분말 10∼20중량%를 혼합하여 제조된 것을 특징으로 한다.In order to achieve the object of the present invention, the fine powder material generated during the stone processing is firstly dried and the secondary powder is pulverized 2000 to 3000 cm 2 / g of the powder degree to be processed to 4500 ~ 6000 cm 2 / g powder to powder admixture 20 20% to 35% by weight of powder admixture for concrete and 4000 to 5000cm2 / g of powder admixture for concrete by processing 1 ~ 35% by weight and powder material generated during limestone production by first drying and secondary grinding to 4500 ~ 6000cm2 / g powder It is characterized in that it was prepared by mixing 10 to 20% by weight of fly ash slag powder having a powder degree of 4500 to 6000cm 2 / g with fly ash having a degree.

본 발명에서 사용되는 재료들은 모두 생산 제조 공정에서 발생하는 부산물들로 매립이나 고가의 처리비를 업체가 부담하여 위탁처리하고 있는 재료로써 일종의 산업폐기물이다. 본 발명에서는 이런 재료를 보다 효율적이고 경제적으로 활용할 수 있는 재료로 만들고자 실시한 발명이다.All materials used in the present invention are by-products generated in the production and manufacturing process, which is a kind of industrial waste, which is entrusted by a company to bear a landfill or expensive processing cost. In the present invention, the invention is made to make a material that can be utilized more efficiently and economically.

이하 본 발명을 보다 상세하게 설명하기로 한다.Hereinafter, the present invention will be described in more detail.

본 발명에서 사용되는 석재 가공시 발생하는 미분말은 다량의 수분을 함유하고 있고 그 자체로는 사용이 불가능하기 때문에 100∼150℃로 건조처리하여 1차 건조처리를 하고 나서 다시 2차분쇄 처리를 실시하여 4500∼6000㎠/g분말도를 가진 재료로 만들어 콘크리트용 분말혼화재 20∼35중량%와 역시 석회석 제조과정에 발생되는 석회석 분말 역시 약간의 수분을 함유 하고 있기 때문에 100∼150℃로 1차 건조처리하고, 2차 분쇄처리를 실시하여 4500∼6000㎠/g 분말도를 가진 재료로 만들어 콘크리트용 분말혼화재 20∼35중량%와 플라이애쉬를 정재 분쇄처리하여 4000∼5000㎠/g 분말로 하여 콘크리트용 분말혼화재 10∼20중량%, 고로슬래그 미분말 분쇄하여 4500∼6000㎠/g의 분말도를 가진 재료를 콘크리트용 분말혼화재 10∼20중량%로 하여 고성능 혼합기로 혼합하여 품질의 균일성을 가질 수 있도록 만들어지는 재료이다. 즉 재료가 미분쇄 되어 콘크리트 배합의 유동성과 작업성이 좋아지고 콘크리트 미세공극을 충진하여 줌으로써 강도 증진 및 건조 수축 방지와 내구성 향상의 효과가 우수하다.The fine powder generated during the processing of stone used in the present invention contains a large amount of water and cannot be used by itself, so it is dried at 100 to 150 ° C. and subjected to the first drying treatment, followed by the second grinding treatment. 20 to 35% by weight of the powder admixture for concrete and the limestone powder generated during the limestone manufacturing process also contain some moisture, so it is dried first at 100 to 150 ℃. Treatment and secondary grinding treatment to make the material with 4500 ~ 6000cm2 / g powder degree, and make 20 ~ 35% by weight of concrete powder admixture and fly ash to grind to 4000 ~ 5000cm2 / g powder 10 ~ 20% by weight of powder admixture for powder and fine powder of blast furnace slag to make powder with 4500 ~ 6000 cm2 / g of powder admixture into 10 ~ 20% by weight of concrete admixture Of a material is made to have a uniformity. That is, the material is finely pulverized to improve the fluidity and workability of the concrete mix and to fill the concrete micropores, thereby improving strength, preventing shrinkage from drying, and improving durability.

이하 실시예를 통하여 설명한다.It will be described through the following examples.

[실시예1 및 비교예1]Example 1 and Comparative Example 1

하기 표1는 레드믹스트 콘크리트 규격인 압축강도 21N/㎟(210kgf/㎠)배합으로 비교예1 의 경우 일반 시멘트를 사용하였고 실시예1의 경우 석재 미분말, 석회석 미분말, 플라이애쉬, 고로슬래그 미분말등을 혼합하여 콘크리트용 분말혼화재를 제조하였다.Table 1 is a combination of red mixed concrete standard compressive strength 21N / ㎜ (210kgf / ㎠) in the case of Comparative Example 1 used a normal cement and in the case of Example 1 stone fine powder, limestone fine powder, fly ash, blast furnace slag fine powder, etc. By mixing, a powder admixture for concrete was prepared.

[표1] 일반 콘크리트 배합 및 콘크리트용 분말혼화재 혼합배합[Table 1] General Concrete Mixture and Powder Mixture Mixture Mixture

[표2] 일반 콘크리트 압축강도 비교[Table 2] Comparison of general concrete compressive strength

상기 표1에서와 같이 비교예1는 일반 시멘트를 사용하는 배합이고 실시예1의 경우 석재미분말 30중량%, 석회석미분말 30중량%, 플라이애쉬 20중량%, 고로슬래그 미분말20중량%,을 혼합하여 제조한 분말 혼화재를 사용한 실시예1의 경우 비교예1 보다 재령 3일, 재령 7일, 재령 28일 모두 우수하고 특히 28일 강도에 있어서는 비교예1에 비해 실시예1이 7%이상 압축강도가 높음을 알 수 있다.As shown in Table 1, Comparative Example 1 is a formulation using general cement, and in the case of Example 1, 30% by weight stone powder, 30% by weight limestone powder, 20% by weight fly ash, 20% by weight blast furnace slag powder, In the case of Example 1 using the prepared powder admixture, all 3 days, 7 days and 28 days of age are superior to Comparative Example 1, and in particular, the compressive strength of Example 1 is 7% or more than that of Comparative Example 1 in the 28-day strength. It can be seen that high.

본 비교예1와 실시예1의 배합을 일률적으로 하기 위하여 사용수, 잔골재, 굵은골재, 혼화제의 사용량을 동일하게 적용하였다.In order to uniformly mix the formulations of Comparative Example 1 and Example 1, the same amount of used water, fine aggregate, coarse aggregate, and admixture were applied.

[표3] 고강도 콘크리트 배합 및 콘크리트용 분말 혼화재 혼합비율[Table 3] Mixing ratio of high-strength concrete mixture and powder admixture for concrete

[표4] 고강도 콘크리트 압축강도 비교[Table 4] Comparison of high strength concrete compressive strength

상기표3에는 레드믹스트 콘크리트 규격인 압축강도 40 N/㎟(400kgf/㎠) 배합으로 비교예2는 일반 시멘트를 사용하는 배합이고 실시예2의 경우 석재미분말30중량%, 석회석미분말30중량%, 플라이애쉬 20중량%, 고로슬래그 미분말20중량%, 을 혼합하여 제조한 분말혼화재를 사용한 실시예2의 경우보다 재령3일, 재령7일, 재령28일 모두 우수하고 특히 28일 강도에 있어서는 비교예2에 비해 실시예2가 6%이상 압축강도가 높음을 알수 있다.Table 3 shows the formulation of the compressive strength 40 N / ㎡ (400kgf / ㎠) of the red mixed concrete standard Comparative Example 2 is a formulation using a normal cement and in the case of Example 2 30% by weight stone powder, 30% by weight limestone powder, 20% by weight of fly ash, 20% by weight of blast furnace slag powder, and 3 days, 7 days and 28 days of age were superior to those of Example 2 using a powder admixture prepared by mixing. It can be seen from Example 2 that the compressive strength of Example 2 is higher by 6% or more.

본 실시에서는 일반적인 콘크리트 배합과 고강도 콘크리트 배합에 따른 강도를 알아보기 위하여 콘크리트용 분말혼화재를 일반 시멘트 대체 20중량%를 사용하였으나 콘크리트 구조물 및 시공조건에 따라서 10∼30%까지 콘크리트용 분말혼화재의 대체가 가능하다.In this study, 20% by weight of concrete powder admixture was substituted for general cement in order to find out the strength according to general concrete mixing and high strength concrete mixing. However, it is possible to replace 10% to 30% of concrete admixture according to concrete structure and construction conditions. It is possible.

이상 설명한 바와 같이 본 발명에 따른 콘크리트용 분말혼화재는 석재 가공시 발생하는 석재 미분말재료와 석회석 제조시 발생하는 분말재료를 건조, 미분쇄하여 얻어진 재료를 주재료로하고 플라이애쉬, 고로슬래그 미분말을 부재료로 하는 재료로 콘크리트 배합시 일반 시멘트에 10∼30중량%에 대체 하는 재료로 일반 시멘트 사용시 보다 콘크리트의 작업성 및 워커빌리티가 우수하고 또한 콘크리트의 내구성, 화학적저항성, 동결융해저항성이 우수한 콘크리트 제조가 가능하고 분말재료의 경우 산업부산물로 발생되는 재료들로서 환경 오염방지와 환경친화적인 재료로써 콘크리트의 시공비 절감의 효과를 기대 할 수 있다.As described above, the powder admixture for concrete according to the present invention is a material obtained by drying and pulverizing the stone fine powder material generated during stone processing and the powder material generated during limestone production, and the fly ash and blast furnace slag fine powder as subsidiary materials. It is a material that substitutes 10 ~ 30% by weight to general cement when concrete is mixed. It has better workability and workability of concrete than general cement, and it is possible to manufacture concrete with excellent durability, chemical resistance and freeze-thawing resistance. In the case of powdered materials, it can be expected to reduce the construction cost of concrete as materials generated as industrial by-products and prevent environmental pollution and environmentally friendly materials.

Claims (2)

콘크리트용 분말혼화재에 있어서 석재미분말 1차 건조시 2000∼3000㎠/g 분말도, 2차 분쇄시 4500∼6000㎠/g분말도를 가진 콘크리트용 분말혼화재 20∼35중량%, 석회석 가공 생산시 발생된 분말을 1차 건조시 2000∼3000㎠/g 분말도, 2차 분쇄시 4500∼6000㎠/g분말도를 가진 콘크리트용 분말혼화재 20∼35중량% 와 플라이애쉬 4000∼5000㎠/g분말도를 가진 콘크리트용 분말혼화재 10∼20중량%, 고로슬래그 미분말4500∼6000㎠/g분말도를 가진 콘크리트용 분말혼화재 10∼20중량%, 를 고성능 혼합기로 혼합하여 만들어진 콘크리트용 분말혼화재.20 to 35% by weight of concrete powder admixtures with 2000 ~ 3000cm2 / g powder degree in the first dry of stone fine powder and 4500 ~ 6000cm2 / g powder degree in the second grinding, in the production of limestone 20 to 35% by weight of the powder admixture for concrete and the fly ash 4000 to 5000 cm 2 / g 10 to 20% by weight of the powder admixture for concrete, 10 to 20% by weight of the powder admixture for concrete with blast furnace slag 4500 to 6000 cm 2 / g powder, powder admixture for concrete. 제 1항에 있어서 일반 시멘트 대비의 10∼30중량%에 대체하여 사용되는 콘크리트용 분말혼화재.The powder admixture for concrete according to claim 1, which is used in place of 10 to 30% by weight compared to general cement.
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