한국건설순환자원학회논문집 (Journal of the Korean Recycled Construction Resources Institute)

한국건설순환자원학회 (Korean Recycled Construction Resources Institute)
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아크릴 수지 농도 차이가 순환잔골재의 물성에 미치는 영향

The Influence of Acrylic Resin Solution Concentration on Properties of Recycled Fine Aggregate

  • 박꽃님 (국립부경대학교 건축공학과) ;
  • 김지현 (국립부경대학교 융합인프라기술연구소) ;
  • 정철우 (국립부경대학교 건축.소방공학부) ;
  • 김영찬 (국립부경대학교 건축.소방공학부)
  • Kkot-Nim Park (Department of Architectural Engineering, Pukyong National University) ;
  • Ji-Hyun Kim (Multidisciplinary Infra-technology Research Laboratory, Pukyong National University) ;
  • Chul-Woo Chung (Division of Architectural and Fire Protection Engineering, Pukyong National University) ;
  • Young-Chan Kim (Division of Architectural and Fire Protection Engineering, Pukyong National University)
  • 투고 : 2024.05.16
  • 심사 : 2024.05.28
  • 발행 : 2024.06.30
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초록

최근 환경문제와 골재난의 해결방안으로 건설폐기물을 재활용한 순환골재의 사용이 주목받고 있다. 순환골재의 재활용을 촉진하기 위해 마련된 여러 다양한 방안에도 불구하고, 순환골재는(특히 순환잔골재) 일반골재에 비하여 품질이 떨어지기 때문에, 구조체용 골재로서의 사용은 제한되고 있어, 순환골재 품질 향상에 관한 연구가 시급하다. 본 연구에서는 순환잔골재 품질 향상을 위해 1시간이라는 짧은 시간 동안 다양한 농도의 아크릴 수지 수용액에 순환잔골재의 침지를 진행하였고, 침지가 종료된 순환잔골재의 흡수율 및 진밀도 측정을 통해 적정 침지농도를 선정한 후, 모르타르 시험체를 제작하고 이의 역학적 성능을 평가하여 순환잔골재 재활용을 촉진시키는 처리방법을 제시하고자 하였다. 실험 결과에 따르면, 아크릴 수지 농도가 높아질수록 순환잔골재의 흡수율과 진밀도는 감소하였으며, 흡수율의 경우 아크릴 수지 농도 6~8 % 수준에서 가장 낮게 나타났으나, 아크릴 수지에 침지시킨 순환잔골재 모르타르의 압축강도는 이보다 낮은 농도인 4 %에서 가장 높게 나타나, 높은 농도의 아크릴 수지 사용이 모르타르 압축강도를 오히려 저하시킬 수 있음을 확인하였다.

Recently, the use of recycled aggregates from construction waste has been introduced as a solution for environmental problems and aggregate shortage. In spite of the various methods to promote recycling of recycled aggregate, the use of recycled aggregate as the structural aggregate has been limited because the quality of recycled aggregate(especially recycled fine aggregate) has been considered lower than that of natural aggregate. In this work, recycled fine aggregate was immersed for an hour in acrylic resin solutions of various concentrations to improve its quality, the appropriate immersion concentration was selected by measuring the absorption capacity and skeletal density of the recycled fine aggregate, and mortar specimens were prepared to evaluate the mechanical performance in order to propose a applicable treatment process to promote the use of recycled fine aggregate. According to the experimental results, as the acrylic resin concentration increased, the absorption capacity and skeletal density of the recycled fine aggregate decreased. The absorption capacity was lowest at acrylic resin concentrations around 6 to 8 %. However, among mortar specimens made of recycled fine aggregate immersed in acrylic resin solution, the compressive strength was the highest at 4 % acrylic resin concentration, suggesting that the use of higher concentration acrylic resin solution can actually lower the compressive strength of mortar.

키워드

과제정보

이 논문은 부경대학교 자율창의학술연구비(2023년)에 의하여 연구되었음. 본 연구의 수행 시 실험 과정을 도운 최유진 연구원 및 학부연구생 김채린, 고채영 학생의 도움에 감사드림.

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