Physical Modeling of Fine Coal Refuse Using Shake Table Testing

Sajjad Salam, Ming Xiao, Jintai Wang

Research output: Contribution to journalConference articlepeer-review

Abstract

The stratification, behavior, and liquefaction resistance of the shallow deposit of FCR was studied using shake table test and piezocone penetration test (CPTu). The CPTu test was conducted at the end of self-consolidation to assess the FCR profile in terms of strength and homogeneity. The shallow deposit of FCR was then tested under a sinusoidal shaking event to capture its seismic behavior and liquefaction resistance. LVDTs attached to the side of the LSB were used to measure the developed shear strains through depth during the shaking event. The hydraulically deposited FCR was mostly classified as a low-plasticity sensitive clayey silt with high potential for strain softening under cyclic loading using the CPTu results. The flow liquefaction occurred due to the shaking event, as large shear strains up to 10% were developed within the FCR deposit. Large shear strains and heterogeneous medium of the FCR deposit resulted in void redistribution and subsequently increase in pore pressure immediately after the shake.

Original languageEnglish (US)
Pages (from-to)114-122
Number of pages9
JournalGeotechnical Special Publication
Volume2020-February
Issue numberGSP 318
DOIs
StatePublished - 2020
EventGeo-Congress 2020: Geotechnical Earthquake Engineering and Special Topics - Minneapolis, United States
Duration: Feb 25 2020Feb 28 2020

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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