• 제목/요약/키워드: eco cement

검색결과 178건 처리시간 0.02초

에코시멘트 콘크리트의 장기강도 특성 및 성능 향상 방안에 관한 연구 (A Study on the Performance Improvement and Long-Term Strength Properties of Eco-cement Concrete)

  • 박광민;이건철
    • 콘크리트학회논문집
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    • 제23권6호
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    • pp.817-826
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    • 2011
  • 에코시멘트를 이용한 콘크리트는 장기강도 발현이 취약한 문제가 지적되고 있지만 현재까지 그 원인이 불분명하여 구조재료로써 널리 사용되지 않고 있다. 이 연구에서는 에코시멘트를 이용한 콘크리트의 장기강도 발현에 미치는 양생 습도의 영향을 검토함과 동시에 강도 특성과 세공구조의 관계에 대해 검토하였다. 그 결과, 수중양생을 실시한 높은 물-시멘트비 공시체에서 심각한 장기강도 정체가 나타났다. 이것은 재령이 경과하여도 10 nm이상의 세공량이 감소하지 않는 것에 기인하고 있다. 반면, 기중양생의 경우에는 에코시멘트에서도 안정적인 장기강도 증진이 확인되었다. 나아가, 에코시멘트를 보다 안정된 재료로 사용하고자 보통 포틀랜드 시멘트 및 미분쇄 플라이애쉬 혼입에 의한 장기강도 개선에 관한 연구를 실행하였다. 그 결과, 이 연구 범위 내에서 장기강도 개선을 기대할 수 있었고, 더불어 재령이 경과함에 따라 세공구조가 치밀해지는 효과를 얻을 수 있었다.

고황산염 시멘트를 활용한 저탄소 친환경 콘크리트 개발 (Development of low-carbon eco-friendly concrete using super-sulfated cement)

  • 기전도;이상현;김영선;전현수;석원균;양완희
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2023년도 가을학술발표대회논문집
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    • pp.199-200
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    • 2023
  • Eco-friendly concrete contains only 5% of cement yet achieves equal or greater strength compared to conventional concrete, reducing salt-attack impact and hydration heat by more than 30% and ensuring higher construction quality for underground structures. Furthermore, eco-friendly concrete can reduce up to 90% of carbon dioxide emissions compared to traditional concrete, enabling a reduction of approximately 6,000 tons of carbon emissions for 1,000 of apartment units construction. This is equivalent to planting around 42,000 trees

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고로슬래그가 혼입된 갯벌 모르타르의 역학적 특성 (The Mechanical properties of Mud Flat mortar mixed with Blast furnace slag)

  • 강윤영;김희두;강대규;양성환
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2015년도 추계 학술논문 발표대회
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    • pp.32-33
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    • 2015
  • Depending on the industrialization, construction market has grown buildings are based on concrete will continue to increase. But the problems of environmental pollution come to the fore with the indiscriminate use of concrete and rapid development. In addition, carbon dioxide(CO2) in the process of producing cement being emitted a large amount of has been caused a serious problem of environmental pollution. This trend is being actively conducted research to reduce the use of cement. In this study, eco-friendly materials, such as flats, Blast-furnace slag by mix and cement review the mechanical characteristics of the mudflats eco-friendly cement mortar to reduce the usability of the review were seen as a green building material.

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플라이 애쉬를 혼입한 에코시멘트 콘크리트의 건조수축 및 균열저항 특성 (Drying Shrinkage and Cracking Resisting Performance of Eco-cement Concrete mixing Fly-ash)

  • 유관종;서태석;최창식
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2009년도 춘계 학술대회 제21권1호
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    • pp.409-410
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    • 2009
  • 본 연구에서는 에코시멘트 콘크리트의 장기강도 발현 증진 대책으로 플라이 애쉬를 혼입한 에코시멘트 콘크리트를 제작하였으며, 압축강도 특성, 건조수축 특성, 균열저항 특성, 부착 특성 등을 조사하였다. 본 논문에서는 건조수축에 의한 에코시멘트 콘크리트의 균열저항 성능에 대해서 조사하였다.

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친환경 SCW공법용 지반고화재 경화체의 내구특성 (Durable Characteristic of Ground Solidification Material's Body of Hardening used Eco-friendly SCW Method)

  • 조정규;형원길
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2017년도 춘계 학술논문 발표대회
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    • pp.118-119
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    • 2017
  • In the S.C.W (soil cement wall) grouting solution, Cement grout ratio of 1 part Portland cement and 1part water is being used. However, Co2 and harmful heavy metals such as cr6+ are discharged in the process, causing a serious environmental issue. The purpose of the present study is therefore to substitute cement grout to inorganic binder and identify durability properties of ground solidification materials.

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폐목질을 사용한 시멘트보드의 기초적 특성에 관한 실험적 연구 (An Experimental Study on the Basic Properties of Cement Boards of Waste Wood)

  • 황병준;김광기;박희곤;강태경;백민수;정상진
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2004년도 학술.기술논문발표회
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    • pp.57-60
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    • 2004
  • Recently. as the alternatives to preserve environment such as effective usage of wastes or unusable resources are drawing attentions, researches and measures for the two tasks, which are reuse of waste wood and development of eco-friendly materials, are being examined and established in various fields. However, they are still insufficient. Therefore, in this study, for the efficient application of waste woods and eco-friendly effects, mortar was produced using sawdust af the waste wood and mineral material cement for combination, in order to produce inorganic boards using waste woods, which were made when sawing. The present study purposed to analyze the physical and dynamic characteristics of woody cement boards, which were made by modifying water-cement ratio for each wood inclusion rate based on a hardening-accelerator inclusion rate set in previous studies and, based on the findings. to provide basic data about the physical properties of inorganic boards made of waste wood, in order to Produce woody cement boards using waste wood, which has problems in being used in the manufacturing of woody cement boards.

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친환경 UM수지를 사용한 폴리머 시멘트 모르타르의 강도 및 내구성에 관한 연구 (A Study on the Strength and Durability of Polymer-Modified Mortars using Eco-friendly UM resin)

  • 권민호;김진섭;박수철
    • 한국산학기술학회논문지
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    • 제14권2호
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    • pp.943-948
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    • 2013
  • 본 연구에서는 콘크리트의 내구수명 개선을 위한 친환경 수지인 UM수지 화합물을 혼합한 시멘트 모르타르의 특성을 연구하였다. 친환경수지인 UM수지를 일반 시멘트 모르타르와 일정비율로 혼합하였다. UM수지를 혼합한 폴리머 시멘트 모르타르에 대하여 압축강도, 쪼갬인장강도, 휨강도, 흡수율 및 내약품성 실험을 수행하였다. 재료실험결과 친환경 수지인 UM수지를 함유한 시멘트 모르타르는 압축강도와 쪼갬인장강도는 감소하는 반면 휨강도와 흡수율 및 내약품성에서는 성능이 개선되었다. 친환경 UM수지 폴리머 시멘트 모르타르는 콘크리트 내구성 보강성능이 우수하였다.

환경 친화형 투수성 폴리머 콘크리트의 특성 (Properties of ECO-permeable Polymer Concrete)

  • 박필우;윤준노;성찬용
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 2002년도 학술발표회 발표논문집
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    • pp.149-152
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    • 2002
  • This study is performed to evaluate the properties of ECO-permeable polymer concrete with blast furnace slag powder and stone dust. The unit weight is in the range of $1,821kg/m^3{\sim}1,955kg/m^3$, the unit weights of those concrete are decreased $15%{\sim}20.8%$ than that of the normal cement concrete. The highest strength is achieved by ECO-permeable polymer concrete filled blast furnace slag powder 50% and stone dust 50%, it is increased 36% by compressive strength, 119% by tensile strength and 217% by bending strength than that of the normal cement concrete, respectively. The coefficient of permeability is in the range of $5.6{\times}10^{-2}cm/s{\sim}8.1{\times}10^{-2}cm/s$, and it is largely dependent upon the mix design.

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석회를 활용한 전통 흙건축 기술에 관한 기초 연구 (Preliminary Study on Traditional Earth Construction Technique use of Lime)

  • 황혜주;강남이
    • KIEAE Journal
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    • 제10권2호
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    • pp.3-8
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    • 2010
  • Many countermeasures are presented to make excessive earth circumstance pollution better in the earth. A lot of researches are in progress to lessen $CO_2$ among the industries exhausting it. The industries manufacturing cement are making many countermeasures. Many concernments on ECO-friendly materials, rather than cement, are increased, and researches are in progress to develop them. Lime, material mostly used before Portland cement appeared, attracts the Occident as well as the Orient. In the Occident, lime mortar was used in common, for maintaining and repairing cultural properties, too. This study is aimed at offering basic materials for the modern use of lime, ECO-friendly material. This study measured the change of intensity and weight with lime, sand, and earth, basic materials of Samhoimool. As a result, at the beginning, hydrated lime displayed its density late, but as time was gone, density was promoted continuously. In addition, density was promoted, when it was given heat at the beginning. If heat-generation reaction of quicklime and water was used, density was promoted at the beginning, but liquidity showed a drop.