Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    A model of granular materials partially cemented by bacterial calcite

    Access Status
    Fulltext not available
    Authors
    Kashizadeh, E.
    Mukherjee, Abhijit
    Tordesillas, A.
    Date
    2017
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Kashizadeh, E. and Mukherjee, A. and Tordesillas, A. 2017. A model of granular materials partially cemented by bacterial calcite, Particles 2017: V International Conference on Particle- based Methods, Fundamentals and Applications, pp. 552-563.
    Source Title
    5th International Conference on Particle-Based Methods - Fundamentals and Applications, PARTICLES 2017
    Source Conference
    Particles 2017: V International Conference on Particle- based Methods, Fundamentals and Applications
    ISBN
    9788494690976
    URI
    http://hdl.handle.net/20.500.11937/66845
    Collection
    • Curtin Research Publications
    Abstract

    Nature aggregates granular materials such as sand, silt and clay into form beach rocks, anthills and other forms of microbialites. A common bio-geo-chemical cementation occurs due to the mineralization of calcium through bacterial enzymatic action, often called Microbial Induced Calcium Carbonate Precipitation (MICP). Unlike engineered cement, which consumes very high amounts of energy and emits large quantities of CO2, this natural cementation occurs in ambient conditions, with negligible energy consumption. Hence, it is a sustainable construction method. Natural cementation is a gradual process, where grains are initially bonded to form clumps. The clumps grow in size to form aggregates, finally creating free standing columns. Numerical models of the mechanical behaviors of cemented grains at the various stages of aggregation offer a way to explore and understand this process. In this paper, we propose a discrete element method (DEM) of aggregated granular materials formed due to MICP. The model is applied to study different levels of aggregation of sand, from sand heaps involving unbonded and bonded grains to free standing columns. The results are compared against experiments and the most important parameters are discussed.

    Related items

    Showing items related by title, author, creator and subject.

    • Influence of aggregate on the microstructure of geopolymer
      Subaer (2004)
      Inorganic geopolymers or simply geopolymers based on silico-aluminate are relatively novel materials with a wide range of potential applications. The mAln purpose of the present study was to experimentally investigate the ...
    • Utilising waste products from Kwinana industries to manufacture low specification geopolymer concrete
      Slabbert, Michael Charles (2008)
      One technology that makes concrete without cement and does not have the associated carbon footprint is geopolymer concrete. This technology utilizes waste fly ash from power stations and mixes it with activating chemicals ...
    • Mechanistic classification of cement treated base in Western Australia
      Yeo, Yang Sheng; Jitsangiam, Peerapong; Nikraz, Hamid (2010)
      Cement treated crushed rocks are increasingly seen as viable pavement materials capable of meeting increasing loads of current traffic conditions. Cement treatment of crushed rocks forms interlocking matrices between ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.