Unconfined and Triaxial Compression Tests on Hollowed Cylindrical Sandstones to Explore the Infilling Effects on the Deformation and Mechanical Behaviors

Table 1

Physical and mechanical properties of the cement mortars and the sandstone.

Properties	LSCM	HSCM	Sandstone
Density (g/cm^3)	2.01	2.10	2.32
P-wave velocity (m/s)	1906	2240	2756
Poisson’s ratio	0.22	0.25	0.27
Young’s modulus (GPa)	5.2	10.0	14.3
UCS (MPa)	13.2	31.6	82.2
Tensile strength (MPa)	1.31	4.83	4.11