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

Table 3

Test results of UCT and DTT for marble.

SN	Gauge number	Ec (GPa)	μ	σc (MPa)	SN	Gauge number	Et (GPa)	μ	σt (MPa)
MC1	1, 2	—	0.24	123.7	MT1	1, 2	2.0	—	1.4
	3, 4	—	0.18			3, 4	—	—
	5, 6	69.8	0.38			5, 6	4.7	0.11
	7, 8	62.2	0.32			7, 8	2.0	—
	Mean	66.0	0.28			Mean	2.2	0.11
MC2	1, 2	50.7	—	98.8	MT2	1, 2	2.9	—	1.4
	3, 4	55.2	0.27			3, 4	2.6	—
	5, 6	49.2	—			5, 6	3.8	—
	7, 8	—	—			7, 8	3.6	—
	Mean	51.7	0.27			Mean	3.2	—
MC4	1, 2	—	0.16	126.2	MT3	1, 2	6.6	0.05	1.4
	3, 4	—	0.38			3, 4	3.7	—
	5, 6	65.7	0.21			5, 6	3.1	—
	7, 8	65.7	0.19			7, 8	3.9	—
	Mean	65.7	0.23			Mean	4.3	0.05
MC5	1, 2	81.2	—	81.8	MT4	1, 2	5.1	—	0.7
	3, 4	61.2	0.35			3, 4	2.4	—
	5, 6	—	—			5, 6	9.4	—
	7, 8	—	0.27			7, 8	3.7	—
	Mean	71.2	0.31			Mean	3.7	—
					MT5	1, 2	2.3	—	1.4
						3, 4	4.8	—
						5, 6	—	0.15
						7, 8	3.5	—
						Mean	2.7	—
Total mean		63.6	0.27	107.6	Total mean		3.7	0.1	1.3

Note. The test for MC3 is not successful.