Dynamic Compression Properties and Deterioration of Red-Sandstone Subject to Cyclic Wet-Dry Treatment

Table 4

Decay constant and half-life of dynamic UCS of red-sandstone after cyclic W-D cycles.

Loading rate (s^−1)	100	150	200	250	300
Decay constant, λ (×10^−3)	8.91	8.31	7.83	7.43	7.07
Half-life,	77.8	83.4	88.5	93.3	98.0