From: Experimental study on the effects of hydrochemistry and periodic changes in temperature and humidity on sandstone weathering in the Longshan Grottoes
Dry density
(g·cm−3)
Water
absorption rate
(%)
Porosity
Richter
hardness
(HL)
Wave
velocity
(km·s−1)
Compressive
strength (MPa)
Tensile
strength
(MPa)
2.28
4.65
10.81
498
2.214
24.83
2.85