KR101620759B1 - Concrete aggregate and method for manufacturing the same - Google Patents

Concrete aggregate and method for manufacturing the same Download PDF

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KR101620759B1
KR101620759B1 KR1020140187861A KR20140187861A KR101620759B1 KR 101620759 B1 KR101620759 B1 KR 101620759B1 KR 1020140187861 A KR1020140187861 A KR 1020140187861A KR 20140187861 A KR20140187861 A KR 20140187861A KR 101620759 B1 KR101620759 B1 KR 101620759B1
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fine aggregate
concrete
average particle
particle size
weight
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KR1020140187861A
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Korean (ko)
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정용수
김형석
안선형
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주식회사 포스코
재단법인 포항산업과학연구원
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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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/10—Clay
    • 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The present invention relates to fine aggregates for concrete and a producing method thereof and, more specifically, to fine aggregates for concrete, which comprises steelmaking slag fine aggregates and dredged soil, solidifies the dredged soil and thus can use the solidified dredged soil as the fine aggregates for concrete, and to a producing method thereof.

Description

콘크리트용 잔골재 및 이의 제조방법{CONCRETE AGGREGATE AND METHOD FOR MANUFACTURING THE SAME}TECHNICAL FIELD [0001] The present invention relates to a fine aggregate for concrete,

본 발명은 잔골재 및 준설토를 포함하는, 콘크리트용 잔골재 및 이를 제조하는 방법에 관한 것이다.
The present invention relates to a fine aggregate for concrete including a fine aggregate and a dredged soil, and a method of producing the same.

국내 준설토는 주로 신항만 건설, 해상항로 유지 및 오염해역 준설 등에 의해 매년 대량으로 발생하고 있으며, 2000년 이후 매년 약 300 내지 4,000만m3 정도가 발생하고 있다. 지역별로 보면 광양, 부산, 여수 등 신항만 개발이 활발하게 이루어진 지역을 중심으로 많은 발생량을 기록하고 있다.
Domestic dredged soil is generated in large quantities every year mainly by construction of new port, maintenance of marine route, and dredging of contaminated sea area. Since 2000, about 300 to 40 million m 3 have been generated annually. By region, the amount of output is mainly recorded in areas where the development of new ports such as Gwangyang, Busan, and Yeosu is active.

최근까지의 준설토 활용방법은 크게 투기장 매립, 외해투기, 기타 방법 등 3가지로 구분할 수 있다. 구체적으로는 준설토의 대부분(80.97%)인 226,512,262m3가 투기장에 매립되고 있고, 배후부지 매립 등 기타 방법이 10.04%를 차지하며, 나머지는 외해투기를 하고 있는 실정이다. 이와 같이 국내에서 발생하는 해양 준설토는 재활용보다는 처리 또는 처분 개념으로 유효 활용율이 극히 낮은 실정이다.
Until recently, the method of using dredged soil can be divided into three types: land filling, dumping dumping, and other methods. Specifically, 226,512,262m 3 of 80.97% (80.97%) of the dredged soil is buried in the arena, and other methods such as landfill land occupy 10.04%, and the rest are dumping specimens. In Korea, marine dredged soils have a very low utilization rate as a treatment or disposal concept rather than recycling.

한편, 준설토에 포함되는 점토 및 실트질 준설토의 경우 그 크기가 매우 작아 재활용 용도 및 방안이 없는 실정이다.
On the other hand, the clay and silt dredged soil contained in the dredged soil is very small in size, and thus there is no recycling purpose or method.

본 발명은 재활용이 어려운 준설토, 예를 들어 점토 또는 실트와 같은 준설토를 자원으로 재활용할 수 있는 방법을 제공하고자 한다.
The present invention seeks to provide a method for recycling dredged soils, for example, clay or silt, which are difficult to recycle, as resources.

또한, 본 발명은 준설토를 이용하여 콘크리트용 잔골재로 재활용하여, 해양 구조물 등 산업의 다양한 분야에 활용이 가능한 콘크리트용 잔골재 및 이의 제조 방법을 제공하고자 한다.
The present invention also provides a fine aggregate for concrete and a method of manufacturing the same, which can be utilized in various fields of industries such as offshore structures by recycling them as fine aggregate for concrete using dredged soil.

본 발명의 일 구현예는, 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 포함하는, 콘크리트용 잔골재를 제공한다.One embodiment of the present invention provides a fine aggregate for concrete comprising fine aggregate and dredged material having an average particle size of more than 0 and 50 탆 or less.

상기 준설토는 점토 및 실트 중 어느 하나 이상을 포함하는 것이 바람직하다. It is preferable that the dredged soil includes at least one of clay and silt.

상기 콘크리트용 잔골재는 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 점토를 포함하고, 상기 콘크리트용 잔골재 총 중량에 대하여, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 30 내지 80중량% 및 상기 점토는 70 내지 20중량%를 포함하는 것이 바람직하다.Wherein the fine aggregate for concrete includes fine aggregate having an average particle size of more than 0 and 50 탆 or less and clay, and fine aggregate having an average particle size of more than 0 and 50 탆 or less based on the total weight of the concrete fine aggregate is 30 to 80% By weight to 20% by weight.

상기 콘크리트용 잔골재는 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 실트를 포함하고, 상기 콘크리트용 잔골재 총 중량에 대하여, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 60 내지 80중량% 및 상기 실트는 40 내지 20중량%를 포함하는 것이 바람직하다.Wherein the fine aggregate for concrete comprises fine aggregates and silts having an average particle size of more than 0 and 50 탆 or less and 60 to 80% by weight of fine aggregates having an average particle size of more than 0 and 50 탆 or less with respect to the total weight of the concrete fine aggregate, By weight to 20% by weight.

상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 제강 슬래그 잔골재 및 폐내화물로 이루어진 군에서 선택되는 하나 이상인 것이 바람직하다.
The fine aggregate having an average particle size of more than 0 and 50 탆 or less is preferably at least one selected from the group consisting of a steelmaking slag fine aggregate and a waste refractory.

본 발명의 다른 구현예는, 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 혼합하는 단계를 포함하는, 콘크리트용 잔골재의 제조방법을 제공한다.Another embodiment of the present invention provides a method for producing a fine aggregate for concrete, which comprises mixing fine aggregate and dredged material having an average particle size of more than 0 and 50 탆 or less.

상기 준설토는 점토 및 실트 중 어느 하나 이상을 포함하는 것이 바람직하다. It is preferable that the dredged soil includes at least one of clay and silt.

상기 콘크리트용 잔골재는 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 점토를 포함하고, 상기 콘크리트용 잔골재 총 중량에 대하여, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 30 내지 80중량% 및 상기 점토는 70 내지 20중량%를 포함하는 것이 바람직하다. Wherein the fine aggregate for concrete includes fine aggregate having an average particle size of more than 0 and 50 탆 or less and clay, and fine aggregate having an average particle size of more than 0 and 50 탆 or less based on the total weight of the concrete fine aggregate is 30 to 80% By weight to 20% by weight.

상기 콘크리트용 잔골재는 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 실트를 포함하고, 상기 콘크리트용 잔골재 총 중량에 대하여, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 60 내지 80중량% 및 상기 실트는 40 내지 20중량%를 포함하는 것이 바람직하다. Wherein the fine aggregate for concrete comprises fine aggregates and silts having an average particle size of more than 0 and 50 탆 or less and 60 to 80% by weight of fine aggregates having an average particle size of more than 0 and 50 탆 or less with respect to the total weight of the concrete fine aggregate, By weight to 20% by weight.

상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 제강 슬래그 잔골재 및 폐내화물로 이루어진 군에서 선택되는 하나 이상인 것이 바람직하다.
The fine aggregate having an average particle size of more than 0 and 50 탆 or less is preferably at least one selected from the group consisting of a steelmaking slag fine aggregate and a waste refractory.

본 발명은 재활용이 어려운 준설토, 예를 들어 점토 또는 실트와 같은 준설토를 이용하여 콘크리트용 잔골재를 제조함으로써, 폐기되는 자원의 재활용이 가능하다.
The present invention makes it possible to recycle waste materials by producing fine aggregate for concrete using dredged soil which is difficult to recycle, for example, dredged soil such as clay or silt.

또한, 본 발명은 준설토 및 잔골재를 혼합하여 콘크리트용 잔골재를 제조함으로써, 해양 구조물 등 산업 현장에서 활용 가능한 정도의 강도를 확보할 수 있다.
In addition, the present invention can produce a fine aggregate for concrete by mixing dredged soil and fine aggregate, thereby securing strength to a degree that can be utilized in an industrial field such as an offshore structure.

도 1은 준설토의 골재 특성 시험 과정을 나타내는 사진이다.
도 2는 준설토를 이용한 콘크리트 시험 과정을 나타내는 사진이다.Fig. 1 is a photograph showing the procedure for testing the aggregate characteristics of dredged soil.
2 is a photograph showing a concrete test process using dredged soil.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시 형태를 설명한다. 그러나, 본 발명의 실시 형태는 여러 가지 다른 형태로 변형될 수 있으며, 본 발명의 범위가 이하 설명하는 실시 형태로 한정되는 것은 아니다.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below.

본 발명의 일 구현예는, 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 포함하는, 콘크리트용 잔골재를 제공한다. 구체적으로, 종래 투기장 매립 등 재활용 되지 않고 버려지는 자원을 활용하기 위한 방안으로, 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 포함하는 콘크리트용 잔골재를 제공할 수 있다.
One embodiment of the present invention provides a fine aggregate for concrete comprising fine aggregate and dredged material having an average particle size of more than 0 and 50 탆 or less. Specifically, the fine aggregate for concrete including the fine aggregate and the dredged soil having an average particle diameter of not less than 0 and not more than 50 탆 can be provided as a means for utilizing resources that are not recycled but discarded, such as land filling in the past.

또한, 본 발명의 다른 구현예는, 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 혼합하는 단계를 포함하는, 콘크리트용 잔골재의 제조방법을 제공한다.
Further, another embodiment of the present invention provides a method for producing a fine aggregate for concrete, comprising mixing fine aggregate and dredged soil having an average particle size of more than 0 and 50 탆 or less.

이때, 상기 준설토는 특별히 한정되지 않지만, 신항만 건설, 해상항로 유지 및 오염해역 준설로부터 발생되는 준설토로, 점토 및 실트로 이루어진 군에서 선택되는 하나 이상인 것이 바람직하다.
At this time, the dredged soil is not particularly limited, but it is preferably at least one selected from the group consisting of clay and silt, which is a dredged soil generated from the construction of the new port, the marine route maintenance and the dredging of the polluted sea area.

상기 점토 및 실트는 준설토에 포함되는 성분으로, 상기 점토는 입경이 1/256mm 이하, 상기 실트는 입경이 1/16 내지 1/156mm인 것이 바람직하다. 일반적으로 상기 점토 및 실트는 별도의 고화제 등과 반응시켜 고화시키고, 이를 산업상 이용 가능한 제품으로 형성시킬 수 있었지만, 본 발명에서는 평균 입경이 0 초과 50㎛ 이하인 잔골재와 혼합함으로써, 별도의 추가 성분 없이 콘크리트용 잔골재로 형성이 가능하다.
The clay and the silt are components contained in the dredged soil. Preferably, the clay has a particle size of 1/256 mm or less and the silt has a particle size of 1/16 to 1/156 mm. In general, the clay and silt can be solidified by reacting with another solidifying agent or the like to form an industrially applicable product. In the present invention, by mixing with the fine aggregate having an average particle size of more than 0 and 50 탆 or less, It can be formed as fine aggregate for concrete.

한편, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 점토를 혼합하여 콘크리트용 잔골재를 형성시키는 경우, 상기 콘크리트용 잔골재는 총 중량에 대하여 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재 30 내지 80중량% 및 상기 점토 70 내지 20중량%로 포함되는 것이 바람직하다. 이때, 상기 점토의 함량이 70중량%를 초과하여 포함되는 경우, 콘크리트의 압축강도가 충분하지 않아 산업 현장에 적용이 어려울 수 있으며, 상기 점토의 함량이 20중량% 미만으로 포함되는 경우 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재의 사용으로 제조 비용이 상승될 수 있는 문제가 있다. 나아가, 상술한 함량을 벗어나는 경우, 슬럼프가 150mm를 초과하여 콘크리트 제품의 제조가 어려워지고, 또한 재료분리가 일어나서 콘크리트 제품의 강도 및 내구성 등 특성을 저하시킬 수 있다.
On the other hand, when the fine aggregate for concrete is formed by mixing the fine aggregate and the clay having an average particle size of more than 0 and 50 탆 or less, the fine aggregate for concrete contains 30 to 80% by weight of the fine aggregate having an average particle size of more than 0 and 50 탆 or less, And 70 to 20% by weight of the clay. When the content of the clay is more than 70% by weight, the compressive strength of the concrete is not sufficient and it may be difficult to apply to an industrial field. When the content of the clay is less than 20% by weight, The use of the fine aggregate having a size of more than 0 and 50 탆 or less may raise the manufacturing cost. Further, when the content is out of the above-mentioned range, the slump exceeds 150 mm, which makes it difficult to produce a concrete product, and material separation may occur, thereby deteriorating properties such as strength and durability of a concrete product.

또한, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 실트를 혼합하여 콘크리트용 잔골재를 형성시키는 경우, 상기 콘크리트용 잔골재는 총 중량에 대하여 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재 60 내지 80중량% 및 상기 실트 40 내지 20중량%로 포함되는 것이 바람직하다. 이때, 상기 실트의 함량이 40중량%를 초과하여 포함되는 경우, 콘크리트의 압축강도가 충분하지 않아 산업 현장에 적용이 어려울 수 있으며, 상기 실트의 함량이 20중량% 미만으로 포함되는 경우 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재의 사용으로 제조 비용이 상승될 수 있는 문제가 있다. 나아가, 상술한 함량을 벗어나는 경우, 슬럼프가 150mm를 초과하여 콘크리트 제품의 제조가 어려워지고, 또한 재료분리가 일어나서 콘크리트 제품의 강도 및 내구성 등 특성을 저하시킬 수 있다.
When the fine aggregate for concrete is formed by mixing the fine aggregate and the silt having an average particle size of more than 0 and 50 탆 or less, the fine aggregate for concrete contains 60 to 80% by weight of the fine aggregate having an average particle size of more than 0 and 50 탆 or less, And 40 to 20% by weight of the silt. When the content of the silt is more than 40 wt%, the compressive strength of the concrete may not be sufficient. Therefore, when the content of the silt is less than 20 wt%, the average particle diameter The use of the fine aggregate having a size of more than 0 and 50 탆 or less may raise the manufacturing cost. Further, when the content is out of the above-mentioned range, the slump exceeds 150 mm, which makes it difficult to produce a concrete product, and material separation may occur, thereby deteriorating properties such as strength and durability of a concrete product.

한편, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는, 콘크리트를 제조하는데 사용되는 평균 입경이 0 초과 50㎛ 이하인 잔골재라면 특별히 제한되지 않지만, 예를 들어 제강 슬래그 잔골재 및 폐내화물로 이루어진 군에서 선택되는 하나 이상을 혼합하여, 본 발명의 콘크리트용 잔골재를 형성시킬 수 있다.
On the other hand, the fine aggregate having an average particle size of more than 0 and not more than 50 탆 is not particularly limited as long as it is a fine aggregate having an average particle diameter of not less than 0 and not more than 50 탆, which is used for producing concrete. For example, it is selected from the group consisting of steelmaking slag fine aggregate and waste refractory One or more of them may be mixed to form the fine aggregate for concrete of the present invention.

이하, 본 발명을 실시예에 의거하여 구체적으로 설명하는 바, 본 발명이 다음 실시예에 의하여 한정되는 것은 아니다.
Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited by the following Examples.

<< 실시예Example >>

준설토를 채취하여 점토 및 실트의 특성 중 절대건조밀도, 흡수율, 조립율, 염화물, 단위용적질량을 각각 시험하여 하기 표 1에 나타내었다.
The dredged soil was sampled and the absolute dry density, water absorption rate, granularity, chloride and unit volume mass of the clay and silt characteristics were tested and shown in Table 1 below.

검사항목Inspection items 규격standard 점토 준설토Clay dredged soil 실트 준설토Silt dredged soil 시험결과Test result 판정Judgment 시험결과Test result 판정Judgment 절대건조밀도(g/cm3)Absolute dry density (g / cm 3 ) 2.50 이상2.50 or higher 2.52.5 합격pass 2.522.52 합격pass 흡수율(%)Absorption Rate (%) 3.0 이하3.0 or less 1.861.86 합격pass 1.691.69 합격pass 조립율Granulation rate 2.3~3.12.3 to 3.1 -- 불합격fail 0.390.39 불합격fail 염화물(NaCl환산량)(%)Chloride (in terms of NaCl) (%) 0.04 이하0.04 or less 0.00790.0079 합격pass 0.00530.0053 합격pass 단위용적질량(kg/L)Unit volume mass (kg / L) -- 1.081.08 -- 1.431.43 -- 종합판정Total judgment -- -- 합격pass -- 합격pass

<< 실시예Example 1> 1>

평균 입경이 30㎛인 잔골재로 제강 슬래그 잔골재 80중량% 및 점토 20중량%를 혼합하여, 콘크리트용 잔골재를 제조하였다.
Fine aggregate for concrete was prepared by mixing 80% by weight of the steelmaking slag fine aggregate and 20% by weight of clay with a fine aggregate having an average particle size of 30 탆.

<< 실시예Example 2> 2>

평균 입경이 30㎛인 잔골재로 제강 슬래그 잔골재 50중량% 및 점토 50중량%를 혼합하여, 콘크리트용 잔골재를 제조하였다.
Fine aggregate for concrete was prepared by mixing 50% by weight of steelmaking slag fine aggregate and 50% by weight of clay with a fine aggregate having an average particle size of 30 탆.

<< 실시예Example 3> 3>

평균 입경이 30㎛인 잔골재로 제강 슬래그 잔골재 30중량% 및 점토 70중량%를 혼합하여, 콘크리트용 잔골재를 제조하였다.
Fine aggregate for concrete was prepared by mixing 30 wt% of the steelmaking slag fine aggregate with 70 wt% of clay with a fine aggregate having an average particle size of 30 탆.

<< 실시예Example 4> 4>

평균 입경이 30㎛인 잔골재로 제강 슬래그 잔골재 80중량% 및 실트 20중량%를 혼합하여, 콘크리트용 잔골재를 제조하였다.
A fine aggregate for concrete was prepared by mixing 80% by weight of the steelmaking slag fine aggregate and 20% by weight of silt with a fine aggregate having an average particle size of 30 탆.

<< 실시예Example 5> 5>

평균 입경이 30㎛인 잔골재로 제강 슬래그 잔골재 60중량% 및 실트 40중량%를 혼합하여, 콘크리트용 잔골재를 제조하였다.
Fine aggregate for concrete was prepared by mixing 60% by weight of the steelmaking slag fine aggregate and 40% by weight of silt with a fine aggregate having an average particle diameter of 30 탆.

<< 실험예Experimental Example >>

1. 콘크리트 조성물 배합 및 콘크리트 구조체 제조1. Formulation of concrete composition and manufacture of concrete structure

상기 실시예 1 내지 5의 콘크리트용 잔골재를 이용하여, 하기 표 2에 나타낸 조성으로 콘크리트 구조체를 제조하였다. 예를 들어, 실시예 1-1의 경우, 콘크리트 구조체는 해양 투석용 콘크리트 구조체로, 물 165kg/m3, 시멘트 340 kg/m3, 골재는 슬래그 굵은 골재가 1965kg/m3 및 상기 실시예 1의 콘크리트용 잔골재 188kg/m3을 혼합하여 콘크리트 구조체를 제조하였다. 또한 동일한 성분을 혼합하여, 하기 표 2의 배합으로 실시예 1-2 내지 5-3의 콘크리트 구조체를 제조하였다.
Using the fine aggregate for concrete of Examples 1 to 5, a concrete structure having the composition shown in Table 2 was prepared. For example, in the case of Example 1-1, the concrete structure is a concrete structure for an ocean dialysis, water 165kg / m 3, the cement 340 kg / m 3, a slag aggregate coarse aggregate 1965kg / m 3 and in Example 1 Of the fine aggregate for concrete was mixed with 188 kg / m 3 to prepare a concrete structure. The same components were mixed to prepare the concrete structures of Examples 1-2 to 5-3 in the formulations shown in Table 2 below.

2. 가공성 평가2. Processability evaluation

콘크리트 구조체 가공성 시험을 위해 슬럼프와 공기량 등을 측정하였다.
Slump and air mass were measured for concrete structure workability test.

3. 재료분리상태 평가3. Evaluation of material separation

재료분리의 상태를 확인하기 위해 투명 시험관에 콘크리트 배합을 주입하고 시간에 따른 재료들의 거동을 확인하였다. 또한 압축강도 측정을 위한 시험체와 동일한 시험체를 만들어서 일정 시간이 지난 시험체를 절단하여 재료분리를 확인하였다.
In order to confirm the state of material separation, a concrete mixture was injected into a transparent test tube and the behavior of the materials with time was confirmed. In addition, the same specimen as the specimen for the compressive strength measurement was made and the specimen past the specified time was cut to confirm the material separation.

4. 압축강도 평가4. Evaluation of compressive strength

상기 제조된 실시예 1-1 내지 5-3의 콘크리트 구조체에 대하여, KS F 2405 "콘크리트의 압축강도 시험방법" 준하여 평가하였으며, 압축강도는 28일을 기준으로 측정하였다.
The prepared concrete structures of Examples 1-1 to 5-3 were evaluated in accordance with KS F 2405 "Method for Testing Concrete Compressive Strength &quot;, and the compressive strength was measured based on 28 days.

배합조건Mixing condition 시험결과Test result 물/결합재(W/B, %)Water / binder (W / B,%) 잔골재율(S/A, %)Fine aggregate ratio (S / A,%) 물(W, kg)Water (W, kg) 슬럼프(mm)Slump (mm) 가공성Processability 재료분리상태Material separation status 압축강도(MPa)Compressive strength (MPa) 실시예 1-1Example 1-1 48.748.7 53.353.3 165165 150150 양호Good 없음none 2424 실시예 1-2Examples 1-2 43.743.7 52.352.3 165165 150150 양호Good 없음none 2323 실시예 1-3Example 1-3 53.753.7 54.354.3 165165 150150 양호Good 없음none 2424 실시예 2-1Example 2-1 48.748.7 51.951.9 165165 150150 양호Good 없음none 2323 실시예 2-2Example 2-2 43.743.7 50.950.9 165165 150150 양호Good 없음none 2222 실시예 2-3Example 2-3 53.753.7 52.952.9 165165 150150 양호Good 없음none 2323 실시예 3-1Example 3-1 48.748.7 51.551.5 165165 150150 양호Good 없음none 2424 실시예 3-2Example 3-2 43.743.7 50.550.5 165165 150150 양호Good 없음none 2323 실시예 3-3Example 3-3 53.753.7 52.552.5 165165 150150 양호Good 없음none 2424 실시예 4-1Example 4-1 48.748.7 51.951.9 165165 150150 양호Good 없음none 2323 실시예 4-2Example 4-2 43.743.7 50.950.9 165165 150150 양호Good 없음none 2525 실시예 4-3Example 4-3 53.753.7 52.952.9 165165 150150 양호Good 없음none 2626 실시예 5-1Example 5-1 48.748.7 49.349.3 165165 150150 양호Good 없음none 2222 실시예 5-2Example 5-2 43.743.7 48.348.3 165165 150150 양호Good 없음none 2323 실시예 5-3Example 5-3 53.753.7 50.350.3 165165 150150 양호Good 없음none 2525

상기 표 2에서 나타낸 바와 같이, 실시예 1-1 내지 5-3의 콘크리트 구조체의 경우, 가공성이 모두 양호하며, 재료 분리를 나타내고 있지 않음을 알 수 있다. 또한, 28일 기준으로 압축 강도가 모두 21MPa 이상으로 측정되었는바, 산업 현장에 적용 가능한 콘크리트임을 알 수 있으며, 특히 해양 구조물 등으로 활용 가능함을 알 수 있다.As shown in Table 2, it can be seen that the concrete structures of Examples 1-1 to 5-3 are all excellent in workability and do not exhibit material separation. In addition, since the compressive strength was measured to be 21 MPa or more on 28 days, it can be seen that the concrete is applicable to the industrial field, and it can be used particularly as an offshore structure.

Claims (10)

삭제delete 삭제delete 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 포함하고,
상기 준설토는 점토이고,
상기 콘크리트용 잔골재 총 중량에 대하여, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 30 내지 80중량% 및 상기 점토는 70 내지 20중량%를 포함하는, 콘크리트용 잔골재.
Fine aggregate having an average particle size of more than 0 and 50 탆 or less, and dredged soil,
The dredged soil is clay,
Wherein the fine aggregate having an average particle size of more than 0 to 50 탆 is contained in an amount of 30 to 80% by weight and the clay is contained in an amount of 70 to 20% by weight based on the total weight of the concrete fine aggregate.
평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 포함하고,
상기 준설토는 실트이고,
상기 콘크리트용 잔골재 총 중량에 대하여, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 60 내지 80중량% 및 상기 실트는 40 내지 20중량%를 포함하는, 콘크리트용 잔골재.
Fine aggregate having an average particle size of more than 0 and 50 탆 or less, and dredged soil,
The dredged soil is a silt,
Wherein fine aggregate having an average particle size of more than 0 to 50 탆 is contained in an amount of 60 to 80% by weight and the silt is contained in an amount of 40 to 20% by weight based on the total weight of the concrete fine aggregate for concrete.
청구항 3 또는 4에 있어서, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 제강 슬래그 잔골재 및 폐내화물로 이루어진 군에서 선택되는 하나 이상인, 콘크리트용 잔골재.
The fine aggregate for concrete according to claim 3 or 4, wherein the fine aggregate having an average particle size of more than 0 and not more than 50 탆 is at least one selected from the group consisting of a steelmaking slag fine aggregate and a waste refractory.
삭제delete 삭제delete 평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 혼합하는 단계를 포함하고,
상기 준설토는 점토이고,
상기 콘크리트용 잔골재 총 중량에 대하여, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 30 내지 80중량% 및 상기 점토는 70 내지 20중량%를 포함하는, 콘크리트용 잔골재의 제조방법.
Mixing the fine aggregate and the dredged material having an average particle size of more than 0 and not more than 50 탆,
The dredged soil is clay,
Wherein the fine aggregate having an average particle size of more than 0 and less than 50 탆 is contained in an amount of 30 to 80% by weight and the clay is contained in an amount of 70 to 20% by weight based on the total weight of the concrete fine aggregate for concrete.
평균 입경이 0 초과 50㎛ 이하인 잔골재 및 준설토를 혼합하는 단계를 포함하고,
상기 준설토는 실트이고,
상기 콘크리트용 잔골재 총 중량에 대하여, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 60 내지 80중량% 및 상기 실트는 40 내지 20중량%를 포함하는, 콘크리트용 잔골재의 제조방법.
Mixing the fine aggregate and the dredged material having an average particle size of more than 0 and not more than 50 탆,
The dredged soil is a silt,
Wherein the fine aggregate having an average particle size of more than 0 and less than 50 탆 is contained in an amount of 60 to 80% by weight and the silt is contained in an amount of 40 to 20% by weight based on the total weight of the concrete fine aggregate for concrete.
청구항 8 또는 9에 있어서, 상기 평균 입경이 0 초과 50㎛ 이하인 잔골재는 제강 슬래그 잔골재 및 폐내화물로 이루어진 군에서 선택되는 하나 이상인, 콘크리트용 잔골재의 제조방법.The fine aggregate for concrete according to claim 8 or 9, wherein the fine aggregate having an average particle size of more than 0 and not more than 50 탆 is at least one selected from the group consisting of a steelmaking slag fine aggregate and a waste refractory.
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KR100965200B1 (en) 2010-03-02 2010-06-24 민경철 Concrete composition for concrete using dredged soil

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