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Enhancement of Soft Soil Behaviour by using Floating Bottom Ash Columns

  • Geotechnical Engineering
  • Technical Note
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

The current disposition worldwide is for sustainable construction, and the application of by-products is one of the ways to achieve it. In this research, bottom ash was used as a substitute material in a granular column to decrease settlement and enhance the bearing capacity of soft soil. Bottom ash is a derivate of the coal burning process, it has similar engineering properties to sand and fine gravel. A set of reduced scale physical modelling tests were performed on floating bottom ash columns to assess the improvement in the bearing capacity of the composite ground. The results clearly showed that the bearing capacity of the model soil was greatly improved with the installation of bottom ash column sand. There was an obvious enhancement of the load capacity of the granular columns when they were encased. The usage of bottom ash instead of aggregate or sand for granular columns will reduce the project cost and it aligns with the goal of sustainable construction development.

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Acknowledgements

The research reported in this article was carried out at the Universiti Teknologi Malaysia. The authors appreciate the Universiti Teknologi Malaysia (UTM) and Ministry of Higher Education (MOHE) and for their financial supports. The project was partly sponsored through Research University Grant from UTM (14H33-Development of Kenaf Geotextile for Ground Improvement).

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Correspondence to Ahmad Safuan A. Rashid.

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Moradi, R., Marto, A., Rashid, A.S.A. et al. Enhancement of Soft Soil Behaviour by using Floating Bottom Ash Columns. KSCE J Civ Eng 23, 2453–2462 (2019). https://doi.org/10.1007/s12205-019-0617-x

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  • DOI: https://doi.org/10.1007/s12205-019-0617-x

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