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

Table 6

Test results of three-point bending test for marble, granite, and sandstone.

Rock	Ec (GPa)	Et (GPa)	Tensile strength (MPa)
MW1	11.70	8.00	3.8
MW2	31.43	3.98	1.8
MW4	17.47	10.38	3.0
Mean	20.20	7.45	2.87
GW1	53.42	24.12	8.2
GW5	31.16	26.27	10.0
Mean	42.29	25.20	9.1
SW3	8.82	5.16	1.8