Comparative Study on the Test Method for Tensile Elastic Modulus of Rock Materials

Table 4

Test results of UCT and DTT for granite.

SN	Gauge number	Ec (GPa)	μ	σc (MPa)	SN	Gauge number	Et (GPa)	μ	σt (MPa)
GC1	1, 2	—	—	70.6	GT1	1, 2	16.2	0.15	4.0
	3, 4	57.0	0.25			3, 4	13.7	—
	5, 6	39.1	0.13			5, 6	8.5	0.02
	7, 8	23.1	0.18			7, 8	10.5	0.08
	Mean	39.7	0.19			Mean	12.2	0.08
GC2	1, 2	63.4	0.23	85.9	GT3	1, 2	11.9	0.06	2.2
	3, 4	53.2	0.19			3, 4	21.3	0.10
	5, 6	45.2	0.11			5, 6	22.2	—
	7, 8	32.6	0.15			7, 8	9.1	0.01
	Mean	48.6	0.17			Mean	16.1	0.04
GC3	1, 2	24.2	—	61.5	GT4	1, 2	10.1	—	3.8
	3, 4	26.4	—			3, 4	15.5	0.06
	5, 6	—	—			5, 6	15.7	0.02
	7, 8	—	—			7, 8	23.6	—
	Mean	25.3				Mean	16.2	0.04
GC4	1, 2	—	—	84.8
	3, 4	—	0.16
	5, 6	36.3	0.24
	7, 8	34.4	—
	Mean	35.4	0.20
GC5	1, 2	35.1	0.19	70.5
	3, 4	55.5	—
	5, 6	26.3	0.21
	7, 8	33.9	—
	Mean	37.7	0.20
Total mean		37.34	0.19	74.7	Total mean		14.8	0.05	3.3

Note. The test for GT2 and GT5 is not successful.