• 제목/요약/키워드: 폐콘크리트분말

검색결과 34건 처리시간 0.017초

수경성 광물질 혼합재를 사용한 교면 덧씌우기용 고성능 콘크리트의 내구성능에 관한 실험적 연구 (Experimental Study on Durability Properties of High Performance Concrete on Using Hydraulic Mineral Admixtures for Bridge Deck Overlay)

  • 김기형;손형호;정호진;이재남
    • 한국건설순환자원학회논문집
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    • 제6권2호
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    • pp.74-80
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    • 2011
  • 본 연구에서는 대표적인 콘크리트용 산업부산자원인 플라이애쉬와 고로슬래그미분말을 교량 덧씌우기용 고성능 콘크리트에 적용하기 위하여 배합조건별 역학특성과 자기수축 특성 및 내염특성을 평가하였으며, 평가결과 수경성 광물질 혼화재의 혼합사용은 염분과 알칼리 골재 반응에 대한 저항성 개선효과로 내구성 증진에 크게 기여하고 자기수축 변형에 대한 저항성 개선에도 효과가 있는 것으로 나타났다. 이 고성능 콘크리트는 재료와 시공 측면에서 내구성과 효율성을 개선시킨 콘크리트로서 폐자원의 활용으로 인한 친환경, 경제성까지 확보할 수 있을 것으로 사료된다.

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폐콘크리트 미분말을 활용한 재생시멘트의 원료조합 (Raw Materials Composition of Recycled Cement from Waste Concrete Powder)

  • 권은희;안재철;박동천;강병희
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2012년도 추계 학술논문 발표대회
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    • pp.61-62
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    • 2012
  • This study is for analyzing possibility of utilizing as cement from waste concrete. The scrapped fine powder which contains a large amount of hydrate of cement can supercede lime stone, and greenhouse gas reductions are expected. However, Fine Aggregate powder efficient separation technology development is essential for that limestone substitution effect and reduce greenhouse gas emissions in order to facilitate through the recycling of the scrapped fine powders.

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폐 TFT-LCD 유리분말을 혼입한 고강도 콘크리트 파일의 특성 (The Characteristics of P.H.C Pile using Admixture by Waste TFT-LCD Glass Powder)

  • 전성환;민경산;소양섭
    • 한국세라믹학회지
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    • 제47권5호
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    • pp.419-425
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    • 2010
  • In order to examine the P.H.C pile raw material using glass forming ceramic. The used materials is ordinary portland cement, waste TFT-LCD glass powder and reactive agent(Ca$(OH)_2$). The first experiment is characteristics analysis of the waste TFT-LCD glass powder, For the second experiment is mortar and concrete compressive strength for using of the concrete file raw material for waste TFT-LCD glass powder. The results of experiment showed that the substitution ratio of 10% waste TFT-LCD glass powder and 1% reactive agent(Ca$(OH)_2$) was excellent at a point of view for the physical characteristic. The study's most important finding is that the recycling of waste TFT-LCD glass powder.

방사화된 폐콘크리트의 고화재 활용을 위한 재생시멘트 분말의 물성 평가 (Evaluation of Physical Properties of Recycled Cement Powder for Recycling Radioactive Waste Concrete )

  • 최유진;김지현;정철우
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2023년도 봄 학술논문 발표대회
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    • pp.305-306
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    • 2023
  • Recently, as the radioactive waste disposal facility becomes scarce, the importance of efficient disposal of waste from nuclear power plants is increasing. This study was conducted to utilize radioactive waste concrete powder as solidifying agent for radioactive waste treatment. Paste with an age of more than one year was used with a disk mill to have a particle size of 150㎛ or less, and treated at temperatures of 500℃, 600℃ and 700℃ for 2 hours. In order to simulate the radioactive cement powder, aqueous solutions of Di-water, CsCl 1M, SrCl2 1M and CoCl2 1M were used as blending water at W/C 0.7 and to improve fluidity, polycarboxylate type superplasticizer was used at 0.4 wt.% based on the weight of recycled cement paste powder. Characterisation was carried out using vicat method, strength and density.

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