Abstract
Take the cemented soil mixed with the soil polluted by Sodium Hydroxide as object, the relationships between of their electrical resistivity and age, sodium hydroxide content, unconfined compression strength have been studied quantitatively. Then combined with microscopic photos, the change mechanism of electrical resistivity and unconfined compression strength were analyzed. Results show: the electrical resistivity and unconfined compression strength are increased with the increase of age under every sodium hydroxide content; the electrical resistivity and unconfined compression strength are increased with the increase of sodium hydroxide content under every age; the unconfined compression strength of cemented soil has a linear correlation with the increase of electrical resistivity. The change of electrical resistivity is because of conductive pore structure and the number of ions. The electrical resistivity of cemented soil is higher, the integral structure conductivity is weaker, the link between soil particles is more closely, the porosity ratio is smaller, the pore connectivity is poorer, the unconfined compression strength of cemented soil is higher.
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