Assessing improvement effects of sand compaction pile in an ash pond

Jin Hung Hwang, Pin Yi Yeh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper presents the ground response in detail during installing sand compaction pile(SCP) in an ash pond. The response includes the pore pressure change and lateral ground deformation. Improvement effect of SCP is accurately evaluated by SPT and SCPT investigation methods through a careful planning and execution. All the results of different methods are highly consistent with each other and the corresponding ground response behavior. The results show that the effect of using SCP to improve coal ash deposit is significant except for the shallow layer above the ground water level owing to its low confining stress. The CPT investigation has the highest resolution to identify the improvement effect and is highly recommended to be used in engineering practice.

Original languageEnglish
Title of host publicationProceedings of the 22nd (2012) International Offshore and Polar Engineering Conference
Pages824-831
Number of pages8
StatePublished - 2012
Event22nd International Offshore and Polar Engineering Conference, ISOPE-2012 - Rhodes, Greece
Duration: 17 Jun 201222 Jun 2012

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference22nd International Offshore and Polar Engineering Conference, ISOPE-2012
Country/TerritoryGreece
CityRhodes
Period17/06/1222/06/12

Keywords

  • Coal ash
  • Ground improvement
  • Lateral deformation
  • Liquefaction
  • Pore pressure
  • Sand compaction pile (SCP)
  • SCPT
  • SPT

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