Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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A experimented study on Rapid-Setting Flowable Material

급결성 유동화처리토의 특성에 관한 실험적 연구

  • Lee, Sang-Il (Dept. of Civil and Environmental Engineering, Hanyang University) ;
  • Cho, Dae-Ho (Dept. of Civil Engineering, Chungang University) ;
  • Han, Sang-Jae (Dept. of Civil and Environmental Engineering, Hanyang University) ;
  • Kim, Soo-Sam (Dept. of Civil and Environmental Engineering, Hanyang University)
  • 이상일 (한양대학교 토목환경공학과) ;
  • 조대호 (중앙대학교 토목공학과) ;
  • 한상재 (한양대학교 토목환경공학과) ;
  • 김수삼 (한양대학교 토목환경공학과)
  • Published : 2006.03.24
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Abstract

Controlled low-strength material(CLSM) which is easily excavated and also known as flowable material, is commonly used as a backfill in utility trenches and other applications. In this study, a rapid-setting flowable material a kind of CLSM made with a field soil were evaluated by an experimental study. The properties ordinarily desired from the mix are: (a) flow under gravity; (b) hardening for early workability(after 4 hours)and cover; and (c) ultimate strength low enough to allow ready excavation. Fluidity of fresh material is evaluated using a simple spread test. Hardening is measured by a mortar penetrometer, and these values are correlated with unconfined compressive strength. It is desirable to keep the ultimate strength to less than $5.6kg/cm^2$ somewhat less target strength is selected for the 28-day value.

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