Model Test on Bearing Characteristics of Basalt Fiber-Reinforced Concrete Lining

Table 4

Test results of flexural toughness.

Type	Test piece number			Average value
	JTH-1	JTH-2	JTH-3
Initial crack strength (MPa)	3.37	3.62	3.43	3.47
Equivalent bending strength (MPa)	2.38	2.27	2.14	2.26
Bending toughness ratio	0.59	0.48	0.52	0.53
Toughness index I10	8.7	9.9	10.3	9.63
Toughness index I30	31.75	29.77	27.54	29.69
Toughness R30/10	115.25	99.35	86.2	100.27