Evaluation of cementation of Jeju coastal sediments using in situ tests

Moon Joo Lee, Sung Jin Hong, Raehyun Kim, Young Ho Chae, Woojin Lee

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1 Citation (Scopus)

Abstract

A series of SPT, CPT and SPS tests were performed for Jeju coastal sediments in order to investigate the possibility of detecting the cementation of granular sediments by in situ tests. Plotting the in situ test results into the G maxq c-q c1 and (G max/p a)/N 60-(N 1) 60 relations suggested by Schnaid et al. (Proceedings of 1st international conference on site characterization, Balkema Pub, Rotterdam 2004) indicates that the Jeju calcareous sediments are cemented. It is also observed that the q c/N ratio of Jeju sediments is much higher than the (q cp a)N 60-D 50 relation suggested by Kulhawy and Mayne (Manual on estimating soil properties for foundation design, EPRI, Ithaca 1990). It is suggested a relative density >100% obtained using the q c-D Rv′ relation suggested for uncemented sands indicates cementation of the in situ sediments. The G max/q c value of Jeju sediments was found to be 2-6 times larger than that of uncemented sands at the same normalized cone resistance. It is concluded that in situ penetration resistances are relatively insensitive to the cementation of granular soil while the deformation moduli are significantly affected by the cementation, and that the relative density and G max of cemented sediments can be seriously misjudged unless the effect of cementation on in situ penetration test results is considered.

Original languageEnglish
Pages (from-to)511-518
Number of pages8
JournalBulletin of Engineering Geology and the Environment
Volume71
Issue number3
DOIs
Publication statusPublished - 2012 Aug

Keywords

  • Cementation
  • Cone resistance
  • Jeju calcareous sediment
  • N value
  • Small strain shear modulus

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Geology

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