Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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An Experimental Study on the Engineering Characteristics of Ternary Lightweight aggregate Mortar Using Recycling Water

회수수를 사용한 3성분계 경량 골재 모르타르의 공학적 특성에 관한 실험적 연구

  • Lee, Jae-In (Department of Architectural Engineering, Wonkwang University) ;
  • Bae, Sung-Ho (Department of Architectural Engineering, Wonkwang University) ;
  • Kim, Ji-Hwan (Department of Architectural Engineering, Wonkwang University) ;
  • Choi, Se-Jin (Department of Architectural Engineering, Wonkwang University)
  • 이재인 (원광대학교 건축공학과) ;
  • 배성호 (원광대학교 건축공학과) ;
  • 김지환 (원광대학교 건축공학과) ;
  • 최세진 (원광대학교 건축공학과)
  • Received : 2022.02.16
  • Accepted : 2022.03.14
  • Published : 2022.03.30
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Abstract

This study uses the recovered water as mixing water and artificial lightweight aggregate pre-wetting water as part of a study to increase the recycling rate and reduce greenhouse gas of the ready-mixed concrete recovered during the concrete transport process, and cement fine powder of blast furnace slag(BFS) and fly ash(FA). The engineering characteristics of the three-component lightweight aggregate mortar used as a substitute were reviewed. For this purpose, the flow, dry unit mass, compressive strength, drying shrinkage, neutralization depth, and chloride ion penetration resistance of the three-component lightweight aggregate mortar were measured. When used together with the formulation, when 15 % of BFS and 5 % of FA were used, it was found to be positive in improving the compressive strength and durability of the mortar.

본 연구는 콘크리트의 운반 과정 중 발생하는 레미콘 회수수의 재활용율 증대 및 온실가스 저감을 위한 연구의 일환으로 회수수를 배합수 및 인공경량골재 프리웨팅수로 사용하고 고로슬래그 미분말 및 플라이애시를 시멘트 대체재로 사용한 3성분계 경량 골재 모르타르의 공학적 특성을 검토하였다. 이를 위해 3성분계 경량 골재 모르타르의 플로우, 기건단위질량, 압축강도, 건조수축, 중성화 깊이, 염화물 이온 침투 저항성을 측정하였으며 측정 결과 회수수를 사용할 경우 높아진 알칼리도에 의해 시멘트계 재료들의 반응성이 높아졌으며 3성분계 배합과 함께 사용할 경우 고로슬래그 미분말 15 %, 플라이애시를 5 % 사용할 시 모르타르의 압축강도 및 내구특성 향상에 긍정적인 것으로 나타났다.

Keywords

Acknowledgement

This research was supported by the Basic Science Research Program thought the National Research Foundation of Korea(NRF) funded by the Ministry of Education(NRF-2019R1I1A3A01049510). This work was also supported by a National Research Foundation of Korea(NRF) grant funded by the Korean government(MSIT)(NO.2020R1A4A3079595).

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