Permeability Evolution and Particle Size Distribution of Saturated Crushed Sandstone under Compression

Table 4

Porosity under variable axial stresses.

Specimen number	Talbot exponent ()	Porosity () under variable axial stresses
		0 MPa	2 MPa	4 MPa	8 MPa	12 MPa	16 MPa
	0.2	0.415	0.309	0.247	0.195	0.167	0.152
	0.4	0.422	0.317	0.254	0.201	0.173	0.155
	0.6	0.432	0.326	0.262	0.206	0.179	0.158
	0.8	0.449	0.346	0.284	0.217	0.188	0.164