• 제목/요약/키워드: blast furnace

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고로슬래그미분말 혼입 콘크리트의 적산온도를 이용한 강도예측모델에 관한 실험적 연구 (An Experimental Study on the Prediction Model for the Compressive Strength of Concrete with Blast Furnace Slag by Maturity Method)

  • 양현민;조명원;이한승
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2012년도 추계 학술논문 발표대회
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    • pp.107-108
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    • 2012
  • The study on the strength prediction using Maturity is mainly focused on, but the study on the concrete mixing blast furnace slag powder is insufficient. The purpose of this study is to investigate the relationships between compressive strength and equivalent age by Maturity function and is to compare and examine the strength prediction of concrete mixing Blast Furnace Slag Power using ACI and Logistic Curve prediction equation. So it is intended that fundamental data are presented for quality management and process management of concrete mixing Blast Furnace Slag Power in the construction field.

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순환골재 및 소각장 애시를 자극제로 사용한 고로슬래그 미분말 다량치환 콘크리트의 Mock-up 성능평가 (Mockup Test of the High Volume Blast Furnace Slag Concrete Using Recycled Aggregates and Incinerator Ash)

  • 김영희;곽용진;김준호;이향재;한민철;한천구
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2012년도 추계 학술논문 발표대회
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    • pp.19-21
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    • 2012
  • This paper was to investigate the effect of incinerator ash on engineering properties of the high volume blast furnace slag concrete through Mock-up test. Test results revealed that the use of recycled aggregates resulted in increase of slump compared with the OPC concrete. But, the use of recycled aggregates did not affect the results of air contents and chloride contents. The use of recycled aggregates showed shortening of setting time of high volume blast furnace slag concrete. When the recycled aggregate was used, delay in strength development at early age happened with high volume blast furnace slag concrete compared with that of OPC concrete.

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초기동해를 입은 고로슬래그 콘크리트의 강도발현 특성에 관한 실험적 연구 (An Experimental Study on Strength Properties of Concrete Using Blast-Furnace Slag Subjected to Frost Damage at Early Age)

  • 최성우;반성수;최봉주;유득현
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2001년도 가을 학술발표회 논문집
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    • pp.629-634
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    • 2001
  • Recently, to consider financial and constructive aspect, usage of Admixture, like Blast-Furnace Slag and Fly-Ash, are increased. Also the use of cold-weather-concrete is increased. Blast-furnace Slag, a by-product of steel industry, have many advantage, to reduce the heat of hydration, increase in ultimate strength and etc. But it also reduces early-age strength, so it is prevented from using of Blast-Furnace Slag at cold-weather-concrete. In this study, for the purpose of increasing usage of Blast-Furnace Slag at cold-weather-concrete, it is investigated the strength properties of concrete subjected to frost damage for the cause of early age curing. According to this study, if early curing is carried out before having frost damage, the strength of concrete, subjected to frost damage, is recovered. And that properties is not connected with the frost cause.

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고로슬래그 미분말을 사용한 콘크리트의 방청성능에 관한 연구 (A Study on the Rust-protection Performance of Concrete using Ground Granulated Blast-furnace Slag)

  • 박상준;김동석;원철;이상수;김영진
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2001년도 가을 학술발표회 논문집
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    • pp.529-532
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    • 2001
  • In this paper, rust-protection performance of concrete using ground granulated blast-furnace slag are discussed. 4 kinds of W/B in combination with 3 kinds of replacement ratio of ground granulated blast-furnace slag and 2 kinds of chloride ion contents of are selected as experimental parameters. According to the experimental results, as the replacement ratio of ground granulated blast-furnace slag is increased, the corrosion area of steel bar tends to be decreased. However, as the autoclave cycle and chloride ion contents are increased, the corrosion area of steel bar is increased. In conclusion, when the replacement ratio of ground granulated blast-furnace slag is 50%, the strength and rust-protection performance appear to be most excellent.

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고로수쇄 슬래그 잔골재의 품질에 대한 고찰 (A Study on the Quality of the Water Coold Blast Furnace Slag Fine Aggregate)

  • 문한영;최연왕;김기형
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1990년도 봄 학술발표회 논문집
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    • pp.24-28
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    • 1990
  • The purpose of this study is to examine through the experimental study whether the water cooled unprocessed blast furnace slag produced in the country is useful for the fine aggregate of concrete or not. The results of this study show that the quality of the water cooled blast furnace slag is inferior to that of natural river sand and that the concrete made by substituting the water cooled blast furnace slag for fine aggregate have a tendency to decrease to some extent in strength. But if the water cooled blast furnace slag is transformed into more hardened state material, to use it as the fine aggregate of concrete will be possible.

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동해시점 및 지속시간에 따른 고로슬래그콘크리트의 강도발현 특성에 관한 실험적 연구 (An Experimental Study on Strength Properties of Concrete Using Blast-Furnace Slag Subjected to Time&Period of Frost Damage)

  • 반성수;이민호;최성우;유득현;최봉주
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2002년도 봄 학술발표회 논문집
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    • pp.143-148
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    • 2002
  • Recently, to consider economical and constructive aspect, Usage of Admixture, like Blast-Furnace Slag and Fly-Ash, are increased. Blast-Furnace Slag, a by-product of steel industry, have many advantage, to reduce the heat of hydration, increase in ultimate strength and etc. But it also reduces early-age strength, it is prevented from using of Blast-Furnace Slag at cold-weather-concrete. In this study, for the purpose of increasing usage of Blast-Furnace Slag at cold-weather-concrete, it is investigated the strength properties of concrete subjected to time and period of frost damage for early age curing. According to this study, if early age curing is carried out before having frost damage, the strength of concrete, subjected to frost damage, is recovered. And that properties is not connected with the frost cause.

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고로슬래그 미분말을 사용한 콘크리트 내의 철근부식에 관한 실험적 연구 (An Experimental Study on the Reinforcement Corrosion in Concrete Using Granulated Blast Furnace Slag)

  • 이동혁;김은겸;김영웅;김영철
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2002년도 봄 학술발표회 논문집
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    • pp.761-766
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    • 2002
  • This paper was peformed to verify the effect that granulated blast furnace slag gets in reinforcement corrosion resistance about chloride ion that invade from outside. An experiment accelerated for the reinforcement corrosion through repeat of brine digestion and dry. Reinforcement corrosion investigated half cell potential method of measurement by ASTM C876 and corrosion area ratio. If granulated blast furnace slag metathesis ratio is high generally that looked the corrosion of reinforcement decreasing as a result that evaluate reinforcement corrosion by ASTM C876 canon in this research. It showed high resistance about reinforcement corrosion that use normal portland cement and increase the metathesis rate of granulated blast furnace slag, as a result that evaluate metathesis rate effect of granulated blast furnace slag according to cement kind. when the test piece split destroying, area rate of reinforcement corrosion showed about result of half cell potential measurement.

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Resources Recycling of a Special Blast Furnace Slag-Bearing TiO$_2$

  • Bai, Chenguang;Chen, Yan;Ou, Yangqi;Qiu, Guibao
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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    • pp.503-507
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    • 2001
  • In this paper the forming and the unique properties of PZH blast furnace slag, bearing TiO$_2$ 22~25%, have been introduced. The utilization of this kind of blast furnace slag, especially about recycling resource of TiO$_2$included in it, has been reviewed and discussed. According to research work experiences and tendency of new materials developing some suggestions about future research on PZH blast furnace slag have been put forward.

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고로슬래그 시멘트를 사용한 인터로킹 블록의 특성에 관한 연구 (A Study on the Properties of Inter-Locking Block Using Blast-Furnace Slag Cement)

  • 이상태;이대주;신병철;김진선;권상준;한천구
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1997년도 가을 학술발표회 논문집
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    • pp.203-206
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    • 1997
  • In this paper, the properties of Interlocking block contained blast furnace slag cement are compared with that with O.P.C.(ordinary portland cement) and are analyzed under various mix proportions and the dosage of AE agent. According to the experimental results, compressive strength and flexural strength of interlocking block with blast furnace slag cement are lower than that with OPC. Also the strength and the ratio of absorption decrease with higher dosage of AE agent. although interlocking block with OPC has better performance than that of blast furnace slag in the side of quality, it is worth while to use the blast furnace slag as materials of interlocking block considered the side of recycling of resources and economy.

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알칼리 자극제 혼입 고로슬래그 콘크리트의 건조수축과 공극구조 (Drying shrinkage and Pore Structure of Blast Furnace Slag Concrete Mixed Alkaline Stimulation)

  • 박지웅;이건철;고산
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2016년도 추계 학술논문 발표대회
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    • pp.32-33
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    • 2016
  • This purpose of this study is to find the properties of pore structure and length change of blast furnace slag cement added alkali powder stimulant on shrinkage reducing agent presence. In length change, the specimen added alkaline stimulant was smaller than normal blast furnace slag concrete. And the specimen added shrinkage reduction agent was confirmed to show smaller rate of length change than the length. In MIP analysis of 1day-age, 0.1㎛ subsequent pore amount of the specimen added alkaline stimulant was significantly smaller value the normal blast furnace slag concrete specimen.

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