Fedakar, Halil IbrahimRutherford, Cassandra J.Cetin, Bora2025-09-252025-09-2520221468-06292164-7402https://doi.org/10.1080/14680629.2021.1948908https://hdl.handle.net/20.500.12573/3692Cetin, Bora/0000-0003-0415-7139;This paper investigated the deformation behaviour of K-consolidated sand-clay mixtures through cyclic triaxial (CT) and hollow cylinder (CHC) tests. The sand-clay mixtures contained 0%, 5%, 10% and 20% clay by weight and were prepared at a relative density of 75%. Clay inclusion caused an increase in the permanent axial strain of mixtures (0.075% to 5% in CT and 0.186% to 5% in CHC), while a relatively insignificant increase in permanent axial strain was observed in the CT specimens containing 5% and 10% clay (0.075% to 1.299%). However, all CHC specimens with clay failed (epsilon(z) >= 5%). It was also observed that shear strain development of sand is significantly influenced by clay inclusion (0.096-2.241%) in CHC tests. Test results clearly show that the effect of a principal stress rotation should be taken into account to better estimate the deformation behaviour of sand-clay mixtures under repetitive traffic loads.eninfo:eu-repo/semantics/closedAccessHollow Cylinder TestPrincipal Stress RotationTriaxial TestDeformationSand-Clay MixtureSand–Clay MixtureArticle10.1080/14680629.2021.19489082-s2.0-85109771666