Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Applicability Estimation Compaction Method of Embankment using LWDT and Geogauge

LWDT와 Geogauge를 이용한 성토지반의 다짐관리 현장적용성 평가

  • Lim, Seong-Yoon (National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Song, Ho-Sung (National Institute of Agricultural Sciences, Rural Development Administration) ;
  • Ryu, Hee-Ryong (National Institute of Horticultural and Herbal Science, Rural Development Administration)
  • Received : 2015.10.12
  • Accepted : 2016.07.28
  • Published : 2016.07.31
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Abstract

PBT (Plate Bearing Test) is a commonly used compaction estimation used to provide basal support for embankments. This study presents the results from experimental evaluations PBT, LWDT (Light Drop Weight Tester) test and Geogauge test with embankment materials which consist in sandy soil, crushed stone and rock. The results of this study indicate that the regression analyze results (r) from test results between Young's modulus and $k_{30}$, $E_v$ are 0.385 and 0.111~0.496, estimated very lack of correlation. The Geogauge is frequency vibration from machine to underground. Geogauge can not measure to accuracy test results when it is used on ground of the rock or crushed stone. The regression analyze results (r) from $E_v$ and Dynamic modulus are 0.502~0.847, different estimated by calculate method, as it were, when calculate $E_v$, least square method are appeared more accuracy than gradient of secant.

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References

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