Experimental Investigation into the Influences of Weathering on the Mechanical Properties of Sedimentary Rocks

Table 6

The correlation function between mechanical parameters and weathering time.

Rock type	Parameters	Type of functions	Fitting formula	Correlation coefficient (R^2)
Black shale	Uniaxial tensile strength	Exponential		0.9957
	Uniaxial compression strength	Exponential		0.9982
	Elastic modulus	Quadratic		0.9939
	Poisson’s ratio	Quadratic		0.9797
	Cohesion	Exponential		0.9916