alexa Cementation of porous materials using calcite
Engineering

Engineering

Journal of Civil & Environmental Engineering

Author(s): Mostafa Ismail, HA Joer, M F Randolph, A Meritt

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A technique of cementing porous materials artificially using calcite is presented. The technique depends on flushing a mixture of chemical solutions through a porous medium, leading to precipitation of calcite due to reaction of the solution ingredients. The experimental procedures adopted to achieve the cementation are described. The response of different soils to the cementation process is analysed. The bond mechanism created by the calcite is illustrated, using optical and electron micrographs. The paper discusses the factors that appear to determine the response of geomaterials to calcite treatment. It has been found that the strength of a calcite-treated material increases with: (a) intrinsic strength of the individual grains, (b) density, (c) decreasing particle size of the host grains, (d) pre-coating of grains with calcite, and (e) roundness and non-angularity of soil grains. The cementation technique described in this paper has proved successful in reproducing the mechanical behaviour of natural calcarenite from the North West Shelf of Australia.

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This article was published in Research Gate and referenced in Journal of Civil & Environmental Engineering

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