High cycling triaxial test to evaluate fatigue in stabilized soils

The database contains nine files, each corresponding to a cyclic triaxial test performed on stabilized silt. The tests were conducted as part of an experimental campaign aimed at investigating the long-term fatigue behavior of stabilized soils under cyclic loading. The investigated material consisted of silt stabilized with 5% CEM III/A cement and 1% lime. The experimental campaign was designed to assess the influence of several testing parameters on the long-term cyclic response and fatigue behavior of the stabilized soil. The experimental conditions varied in terms of curing duration, curing conditions, initial stress state, drainage conditions, and cyclic loading amplitude. Two curing conditions were considered: normalized curing at 20 °C and 95% relative humidity and immersion at 20 °C after 28 days of normalized curing. Different initial stress conditions were investigated, together with both consolidated drained (CD) and consolidated undrained (CU) triaxial tests. Different cyclic loading amplitudes were also applied to characterize the fatigue response of the stabilized material under high numbers of loading cycles. Each file contains the measurements recorded throughout the test. The main variables include the sequence number of recordings, representing the chronological order of the instructions; time (s); number of cycles; axial strain measured by two local LVDT sensors (Sensors A and B, %); deviatoric stress (kPa); mean stress (kPa); pore pressure (kPa); and volumetric strain (%). Two LVDT sensors were used to obtain local axial strain measurements during the tests. The file names follow a standardized nomenclature describing the main experimental conditions. The naming convention is: XXXd – X – XX – XXXkPa – XXkPa where: · XXXd = curing duration (days); · I = immersion curing condition; · N = normalized curing condition; · CD = consolidated drained test; · CU = consolidated undrained test; · XXXkPa = initial deviatoric stress, q₀ (kPa); · XXkPa = cyclic deviatoric stress amplitude, Δq (kPa). This nomenclature allows the experimental conditions associated with each dataset to be identified directly from the corresponding file name.