Abstract
Presented in this paper are the results of mineralogical and engineering tests performed on clay soils from Ottawa, New Liskeard, and Fort William, Ontario. The mineralogical tests performed include: X-ray diffraction, differential thermal analyses, potassium analyses, glycol retention, carbonate analyses, and pore fluid salinity.The clay minerals identified in the fine fractions of the soils are illite, iron, and aluminum chlorite, and variable amounts of vermiculite and a montmorillonite-like mineral. It is believed that adsorbed aluminum and iron hydroxide cations have altered the vermiculite in some cases to a more swelling clay and in some cases to a nonswelling chlorite.A borehole log for each site is presented along with a summary of routine engineering tests.
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