Study on Creep Behavior of Wenzhou Remolded Coastal Silt Under One-Dimensional and Triaxial Tests

This study investigates the creep behavior of remolded Wenzhou (China) coastal silt through one-dimensional (1D) and triaxial creep tests. Results show that the secondary consolidation coefficient exhibits a non-monotonic response to stress levels, while it decreases with increasing overconsolidation ratios (OCRs). The e-lgt curves reveal four distinct creep stages, and the soil exhibits significant time-dependent behavior that diminishes with depth. Triaxial tests highlight nonlinear stress–strain characteristics, where increasing confining pressure elevates the deviatoric stress required for creep acceleration. A proposed structural parameter exhibits an inverse correlation with creep deformation, which suggests that enhanced soil cementation can improve long-term stability. This finding provides critical insights for the management of silt foundations in Wenzhou.