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2025 Vol.41, Issue 5 Preview Page
Liquefaction Resistance of Loose Sand and Eco-Friendly Reinforcement Materials (GeoCem)

느슨한 사질토지반 액상화 저항특성 및 친환경 보강재(GeoCem) 연구

Wook Jun1
,
Ui Chan Lee2
,
Jongwon Jung3*
전 욱1
,
이 의찬2
,
정 종원3*
1Member, Ph.D Student, Dept. of Civil Engineering, Chungbuk National Univ.
2Member, M.S Student, Dept. of Civil Engineering, Chungbuk National Univ.
3Member, Prof., Dept. of Civil Engineering, Chungbuk National Univ.
1정회원, 충북대학교 토목공학과 박사과정
2정회원, 충북대학교 토목공학과 석사과정
3정회원, 충북대학교 토목공학부 교수
*Corresponding Author
31 October 2025. pp. 131-141
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Abstract

In major urban areas of Korea, the near-surface ground is largely composed of loose reclaimed and sedimentary deposits, which are highly susceptible to liquefaction. Cement-based ground improvement methods, commonly applied as countermeasures, accelerate climate change through CO2 emissions and may cause groundwater and soil contamination. Thus, eco-friendly reinforcement materials for replacing cement are urgently required. In this study, cyclic shear tests were conducted on Pohang sand and cement-treated sand to quantitatively evaluate their liquefaction resistance. An eco-friendly reinforcement material that is more economical, environmentally sustainable, and exhibits superior liquefaction resistance compared with conventional cement was developed. The proposed material can effectively substitute cement in ground improvement, minimize cement consumption, and reduce CO2 emissions, thereby contributing significantly to carbon neutrality.

Keywords
Cyclic simple shear test
Eco-friendly solidification material
Ground settlement
Liquefaction

국내 주요 도심지의 지표 부근은 대부분 느슨한 매립층 및 퇴적층으로 구성되어 있어 액상화(Liquefaction) 발생 가능성이 크다. 액상화 피해 대책으로 주로 적용되고 있는 시멘트계 보강공법은 이산화탄소(CO2) 발생 및 온실가스 증가로 기후변화를 가속하며, 지하수 및 토양 오염을 유발하므로 시멘트를 대체할 수 있는 친환경 보강재료 개발이 요구된다. 본 연구에서는 포항 모래와 시멘트 보강 모래를 대상으로 반복전단시험을 실시하여 액상화 저항특성을 정량적으로 평가하였으며, 기존에 사용되어온 시멘트보다 경제적이면서 친환경적이고 액상화 저항특성이 우수한 친환경 보강재료를 개발하였다. 본 연구에서 개발된 친환경 보강재료는 지반보강 시 시멘트 대신 사용되어 시멘트 사용량을 최소화하고 이산화탄소 배출량을 줄임으로써 탄소중립에 기여가 클 것으로 판단된다.

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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 41
  • No :5
  • Pages :131-141
  • Received Date : 2025-08-20
  • Revised Date : 2025-09-06
  • Accepted Date : 2025-09-07
  • DOI :https://doi.org/10.7843/kgs.2025.41.5.131
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