Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2005.03a
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- Pages.627-632
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- 2005
Evaluation of Compressibility of Rock Fill Materials by Large-Scale Oedometer Tests
대형 오이도미터 시험을 통한 Rockfill 재료의 압축성 평가
- Kim, Bum-Joo (Dam Safety Research Center KIWE) ;
- Shin, Dong-Hoon (Dam Safety Research Center KIWE) ;
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Jeon, Je-Sung
(Dam Safety Research Center KIWE) ;
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Lim, Jeong-Yeul
(Dam Safety Research Center KIWE)
- Published : 2005.03.25
Abstract
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.
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