대형 오이도미터 시험을 통한 Rockfill 재료의 압축성 평가

Evaluation of Compressibility of Rock Fill Materials by Large-Scale Oedometer Tests

  • 김범주 (수자원연구원 댐안전연구소) ;
  • 신동훈 (수자원연구원 댐안전연구소) ;
  • 전제성 (수자원연구원 댐안전연구소) ;
  • 임정열 (수자원연구원 댐안전연구소)
  • 발행 : 2005.03.25

초록

In this study, a series of large-scale oedometer tests was performed to investigate the compressibility of rock fill materials. The testing samples were prepared to have three different grain size distributions and for each distribution, exist in two different states(dried and saturated). The test results indicated that particle breakages occurred mainly for the particles larger than 4.75mm in size and increased with increasing grain sizes. Also, it was found that, for a dry sample as it became well-graged, its compressibility decreased and accordingly, its tangent constrained modulus increased. A comparion between the samples in dry and saturated states revealed that compressibility of the materials increases with increasing water content. The values of tangent constrained modulus calculated for the tested dry samples were larger by about 10 to 20%, on average, than those for the saturated samples.

키워드