Compressive Behavior and Shear Strength of Ultra-High Strength Mortar under Shock Loading

The compressive behavior and shear strength of ultra-high strength mortar under shock loading have been evaluated by stress wave profile measurements using in-material manganin stress gauges. The dynamic-compression path derived from the stress wave propagation profiles indicates that the magnitude of the applied impact stress dose not have a strong effect on the consolidation and densification processes of the voids in the mortar. The results also indicate that there is a large hysteresis in the compression and release paths, and that a large amount of impact energy is consumed in the pore consolidation and densification processes. The evaluation of the shear stress showed that the shear strength increased with increasing impact stress.