Confined and partially confined swelling pressure of basaltic clays

This paper looks at the swell pressures developed in basaltic clay under confined and partially confined conditions, including the pressure reduction with expansion of the soil. The paper makes a comparison of the measured values with those presented in literature for similar materials and looks at the suitability of empirical equations from literature for the estimation of confined swell pressure in Melbourne’s basaltic clays. The paper also considers the potential applications for the findings in design and relevant considerations with regard to design in accordance with Australian Standards.