Stabilization of Mine Tailings Using Microbiological Induced Carbonate Precipitation for Dust Mitigation: Treatment Optimization and Durability Assessment

Farideh Ehsasi, Leon Van Paassen, Liya Wang

Research output: Contribution to journalConference articlepeer-review

Abstract

Wind erosion (dust) is a severe problem for mine tailings industry, as it poses environmental and safety concerns to public. In this study, microbiologically induced carbonate precipitation (MICP) based on urea hydrolysis was used to stabilize the surface of different tailings materials. An experimental study was performed on soil-filled pans that were prepared using loosely packed tailings material and treated using percolation of reactive solutions. Penetration testing and calcium carbonate content analysis were used to optimize the treatment strategy and assess the strength and durability of the cemented crusts. The MICP treated pans showed an increase in strength and durability with increasing concentration of the cementation solution and number of treatments.

Original languageEnglish (US)
Pages (from-to)326-334
Number of pages9
JournalGeotechnical Special Publication
Volume2022-March
Issue numberGSP 331
DOIs
StatePublished - 2022
Event2022 GeoCongress: State of the Art and Practice in Geotechnical Engineering - Soil Improvement, Geosynthetics, and Innovative Geomaterials - Charlotte, United States
Duration: Mar 20 2022Mar 23 2022

ASJC Scopus subject areas

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

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