A Comparative Study on the Dynamic Tensile Strength Evaluation Method of Rock Materials

Table 3

Experimental results of the spalling test.

ID	Specimen length (mm)	Strain rate (1/s)			Dynamic tensile strength (MPa)
		SP-01	250	9.24	26.86	45.67	49.68	9.89	12.42
SP-02	250	11.91	32.04	41.30	50.15	10.38	12.10
SP-03	250	13.53	29.93	84.05	63.28	13.97	14.28
SP-04	250	17.14	48.72	113.99	59.85	14.06	20.49
SP-05	250	18.88	67.46	108.77	71.80	17.78	23.35
SP-06	250	19.68	56.57	104.24	75.61	10.88	23.49
SP-07	250	22.49	69.11	145.55	76.72	22.99	26.07
SP-08	250	23.49	72.05	140.81	74.83	16.64	24.58
SP-09	150	13.48	—	36.38	—	—	10.35
SP-10	150	42.59	—	124.12	—	—	26.01
SP-11	150	16.94	—	87.98	—	—	17.32
SP-12	150	32.68	—	97.65	—	—	19.47