Determination of Rock Tensile Strength Based on Arc Loading Splitting Test considering Modulus Effect

Table 4

Comparison of calculating results of tensile strength by different methods.

Elastic modulus E (GPa)	7.35	10.2	13.43	20.62	23.45	27.4	37	45.2	53.58
Maximum contact angle (°)	33.8	31.7	30	25.5	27	23	21	20	19
Tensile strength test (MPa)	1.59	2.24	3.22	4.17	4.5	6.08	6.26	7.24	8.93
Wang and Cao [9]	1.93	2.69	3.77	4.58	4.81	6.47	6.17	7.04	7.75
Relative error (%)	21.44	20.00	16.96	9.72	6.80	6.38	−1.40	−2.76	−13.21
Huang et al. [10]	1.91	2.65	3.74	4.55	4.78	6.44	6.39	6.89	7.92
Relative error (%)	20.30	18.20	16.11	9.05	6.20	5.84	2.00	−4.83	−11.27
Wang et al. [22]	1.92	2.67	3.76	4.57	4.79	6.46	6.09	7.01	7.69
Relative error (%)	21.05	19.00	16.67	9.49	6.40	6.20	−2.77	−3.18	−13.87
Satoh [23]	1.94	2.60	3.77	4.58	4.82	6.48	6.07	6.73	7.91
Relative error (%)	21.81	16.00	17.24	9.93	7.00	6.56	−3.00	−7.04	−11.44
In this study (MPa)	1.63	2.27	3.29	4.26	4.44	6.19	6.36	7.1	8.77
Relative error (%)	2.52	1.20	2.17	2.16	−1.40	1.81	1.60	−1.93	1.79