Experimental Researches on Long-Term Strength of Granite Gneiss

Table 3

Results comparison of the three methods to confirm the long-term strength.

Specimen number	Isochronous stress-strain curve method	Tangent method of steady creep rate		Intersection method of steady creep rate
	/MPa	/MPa	/%	/MPa	/%
A1	157.8	156.8~158.6	−0.6~0.5	158.4	0.4
A2	152.4	151.6~153.4	−0.5~0.7	153.2	0.5
A3	147.6	146.4~148.2	−0.8~0.4	148.4	0.5