Resumo

FATTAH, Mohammed Y; JONI, Hasan H  e  A. AL-DULAIMY, Ahmed S. Compaction and Collapse Characteristics of Dune Sand Stabilized with Lime-Silica Fume Mix. Earth Sci. Res. J. [online]. 2016, vol.20, n.2, pp.1-8. ISSN 1794-6190.  https://doi.org/10.15446/esrj.v20n2.50724.

The purpose of this research is to assess the suitability of dune sands as construction materials, moreover, such a purpose is considered beneficial in assessing appropriate methods for soil stabilization or ground improvement and to assess the suitability of dune sands as subgrade layer for carrying roads and rail foundation. Dune sand samples were collected from a region in Baiji area in Salah-Aldeen governorate, North of Iraq. A grey-colored densified silica fume (SF) and lime (L) are used. Three percentages are used for lime (3%, 6% and 9%) and four percentages are used for silica fume (3%, 6%, 9% and 12%) and the optimum percentage of silica fume is mixed with the percentages of lime. Unsoaked CBR on compacted dune sands treated dune sands with L-SF by mixing and cured for a period of 1 day. The increasing in CBR ranged between 443 - 707% at 2.54 mm penetration and 345 - 410% at 5.08 mm penetration.

Palavras-chave : Dune sand; lime; silica fume; stabilization; CBR; strength.

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