Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Analysis of the Applicability of Ground Stabilizer Using Recycled Resources as Prebored Piles

매입말뚝 주면고정액으로 순환자원을 재활용한 지반안정재의 활용 가능성 분석

  • 서세관 ((주)지안산업 기술연구소) ;
  • 송상훤 (전주비전대학교 건축과) ;
  • 조대성 ((주)지안산업 기술연구소)
  • Received : 2021.08.07
  • Accepted : 2021.08.25
  • Published : 2021.09.30
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Abstract

In this study, tests were performed to analyze the feasibility of using the ground stabilizer from recycled resources such as blast furnace slag powder as filling material of prebored piles. For this, specimens were prepared by applying 70% and 83% of the general water/binder ratio of the filling material of prebored piles. And compression test, model test, and shaking table test were performed to determine the compressive strength, skin friction on the surface between prebored pile and filling material, and seismic performance of ground stabilizer. As a result of the tests, the compressive strength exceeded the relevant domestic standards, and the skin friction was equivalent to that of ordinary portland cement. In addition, the amount of vertical and horizontal displacement caused by earthquakes was found to be much smaller than the domestic standard. Therefore, when considering the test results comprehensively, it is judged that the feasibility of using a ground stabilizer from recycled resources as filling material for prebored pile is sufficient.

본 연구에서는 고로슬래그 미분말 등의 순환자원을 재활용하여 건설 현장에서 다양한 목적으로 사용되고 있는 지반안정재에 대해 매입말뚝용 주면고정액으로서의 활용 가능성을 분석하기 위한 연구를 수행하였다. 이를 위해 주면고정액의 일반적인 물/결합재비인 70%와 83%를 적용하여 시편을 제작하고, 압축강도, 주면마찰력, 내진 성능을 파악하기 위한 압축시험, 모형시험, 진동대 시험을 실시하였다. 시험결과. 순환자원을 재활용한 지반안정재의 경우, 국내 관련 기준에 제시된 압축강도 기준을 상회하고, 보통 포틀랜드 시멘트 대비 동등한 주면마찰력을 발휘하며, 지진으로 인한 발생 변위량도 국내 허용변위 기준에 비해 매우 작은 수준을 나타내었다. 따라서 시험결과를 종합적으로 고려할 때, 매입말뚝용 주면고정액으로서 순환자원을 재활용한 지반안정재의 활용 가능성은 충분한 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 2018년도 중소기업벤처기업부 및 한국토지주택공사(LH)의 공동재원으로 구매조건부신제품개발사업(S2690149)의 지원에 의해 수행되었습니다.

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