Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Compressive Strength Properties of Concrete Using High Early Strength Cement and Recycled Aggregate with Steam Curing Conditions

조강시멘트와 순환골재를 적용한 콘크리트의 증기양생조건별 압축강도 특성

  • Kim, Yong-Jae (Department of Civil Engineering, Kangwon National University) ;
  • Kim, Seung-Won (Department of Civil Engineering, Kangwon National University) ;
  • Park, Cheol-Woo (Department of Civil Engineering, Kangwon National University) ;
  • Sim, Jong-Sung (Department of Civil & Environmental Engineering, Hanyang University)
  • 김용재 (강원대학교 건설시스템공학과) ;
  • 김승원 (강원대학교 건설시스템공학과) ;
  • 박철우 (강원대학교 건설시스템공학과) ;
  • 심종성 (한양대학교 건설환경공학과)
  • Received : 2016.03.15
  • Accepted : 2016.03.25
  • Published : 2016.03.30
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Abstract

Recycled aggregate is a valuable resource in Korea in lack of natural aggregate. Government recognizes the importance and suggests various policies enhancing its use for higher value-added application. Most of recycled aggregate produced currently in Korea, however, is applied for low value-added uses such as embankment, reclamation, etc. Its higher valued application such as for structural concrete is very limited. Although domestic manufacturing technology of recycled aggregate is at the world level, recycled aggregate is not applied for structural concrete. Primary reasons for the limited use of the recycled aggregate include bonded mortar and cracks occurred during crushing and hence it is very difficult to predict and control the quality of recycled aggregate concrete. This research intended to grasp combined characteristics of recycled aggregate, high early strength cement, maximum temperature and time duration of steam curing and then, analyze the effects of factors. Also, it suggested the method to improve field applicability of recycled aggregate concrete.

순환골재는 천연골재가 부족한 국내에서 매우 유용한 골재자원이며, 정부에서도 이러한 중요성을 인식하고 순환골재의 고부가가치 활용을 위한 다양한 정책을 제안하고 있다. 그러나 현재 국내에서 생산되는 순환골재는 대부분 성토, 매립 등 저부가가치의 용도로 활용되고 있으며 구조용 부재와 같은 고부가가치 활용은 아직 이루어지지 않고 있다. 국내 순환골재 생산기술은 세계적인 수준임에도 불구하고 순환골재콘크리트의 구조용 부재적용은 아직 이루어지지 않고 있으며 이는 순환골재의 표면에 부착된 부착모르타르와 순환골재의 생산과정에서 발생되는 균열로 인해 순환골재콘크리트의 품질을 예측하고 조절하기 어렵기 때문인 것으로 판단된다. 본 연구에서는 순환골재콘크리트의 현장적용성 증진을 위한 일환으로 순환골재, 조강시멘트, 증기양생 최고온도 및 최고온도 지속시간이 순환골재콘크리트에 미치는 영향을 분석하고자 하였다.

Keywords

References

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