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

Korean Geotechnical Society (한국지반공학회)
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Verification of the large scale, free-free resonant testing equipment using Jumunjin sand

주문진 표준사를 이용한 대형 공진주 시험 장비의 검증

  • Park, In-Beom (Dept. of Civil Engineering, Kyunghee Univ.) ;
  • Park, Chul-Soo (Railroad Structure Research Department, Korea Railroad Research Institute) ;
  • Mok, Young-Jin (Dept. of Civil Engineering, Kyunghee Univ.)
  • 박인범 (경희대학교 토목공학과) ;
  • 박철수 (한국철도기술연구원 철도구조연구실) ;
  • 목영진 (경희대학교 건설환경공학부)
  • Published : 2009.09.25
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Abstract

Measuring dynamic properties of gravel-sized materials demands large specimens. Due to the difficulties in experiment as well as equipment, the dynamic properties of gravel-sized material has rarely been investigated. To realize free-free end condition more properly and stabilize specimen during testing with new specimen support system, a free-free resonant column testing device, which is capable of testing gravel-sized materials and constraining a specimen in free-free boundaries, is developed. We report the calibration of the equipment and preliminary testing results on Jumunjin sand. The testing data are compared with the previous data obtained from the existing fixed-free resonant column test.

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