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Experimental Evaluation of the Effects of Gravel Particles on the Dry Density of Compacted Soil

  • Sou IharaEmail author
  • Shohei Noda
  • Yoshiaki Kikuchi
  • Fumio Tatsuoka
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 62)

Abstract

Field fill material often contains gravel particles larger than the allowable limit for standard laboratory compaction tests. In such cases, the maximum dry density (ρd)max of the fill material compacted at a specified compaction energy level (CEL) must be estimated from the (ρd)max value via compaction tests at the same CEL on the sample obtained by removing large gravel particles. When the gravel mass ratio P is lower than 0.3 or 0.4, this estimate is usually made by the Walker-Holtz (WH) method, which assumes that the same CEL that was applied to the whole sample is transmitted to the portion other than gravel particles inside the whole sample. Research on this estimate for P higher than 0.3 or 0.4 validated by experimental data is rather limited. In this study, a series of laboratory compaction tests were performed changing the maximum particle size, CEL, P, and soil type to examine the validity of the WH method. Based on the test results, a method to modify the WH method is proposed to estimate the (ρd)max value more properly after adding or removing gravel particles compacted at a certain CEL.

Keywords

Compaction control Embankment Gravel content Maximum dry density The degree of compaction 

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Notes

Acknowledgments

The authors sincerely appreciate the help by Mr. Iina, R., an undergraduate student of Tokyo University of Science in performing this study. This research is part of the joint research with Hazama-Ando Corporation.

References

  1. Holtz, W. G. and Lowitz, C. A. (1957). Compaction characteristics of gravelly soils, U.S. Bureau of Reclamation, Earth laboratory report, No. EM-509, Sept.Google Scholar
  2. Tatsuoka, F. (2015). Compaction characteristics and physical properties of compacted soil controlled by the degree of saturation, Keynote Lecture, Deformation characteristics of geomaterials. Proc. of 6 th Int. Conf. on Deformation Characteristics of Geomaterials, Buenos Aires, 40-78.Google Scholar
  3. Tatsuoka, F. and. Gomes Correia, A. (2018). Importance of Controlling the Degree of Saturation in Soil Compaction linked to Soil Structure Design. Transportation Geotechnics 17, 3-27.CrossRefGoogle Scholar
  4. Walker, F. C. and Holtz, W.C. (1951). Control of Embankment Material by Laboratory Testing, Proc. ASCE, 77-108, pp.1-25.Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Sou Ihara
    • 1
    Email author
  • Shohei Noda
    • 1
  • Yoshiaki Kikuchi
    • 1
  • Fumio Tatsuoka
    • 1
  1. 1.Tokyo University of ScienceNodaJapan

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