Cyclic triaxial system for determining the resilient modulus (Mr) of subgrade soils and unbound base/subbase materials under repeated axial loading with confining pressure—fully automating preconditioning and all loading sequences.
Supports standard cylindrical specimens with H/D ≈ 2:1, internal LVDTs for recoverable strain, and closed-loop axial load control to deliver haversine pulses with programmable load/rest periods (e.g., 0.1 s / 0.9 s).
Triaxial cell provides stable confining pressure with automated sequences (fixed or variable σ3) for cohesive and granular materials; software calculates Mr = σd / εr (cycle-averaged) with built-in quality checks.
Optional kit for bituminous mixtures (indirect tension) to determine resilient modulus and stiffness on the same frame.
Turn-key reporting with sequence logs, Mr–bulk stress plots, and export to CSV/PDF; robust frame and corrosion-resistant pressure cell for routine QC and research.
