Study of the Dynamic Mechanical Properties of Recycled Concrete Containing Ferronickel Slag Subjected to Impact

Table 4

Dynamic impact test results.

Specimen	Loading rate (GPa/s)	Average toughness index (J/cm^3)	Average peak strain (10^−2)	Average peak stress (MPa)	Failure pattern
N0-60-1400	1400	85.76	1.361	69.11	Crack
N0-60-1500	1500	92.70	1.411	81.01	Fragmentation
N0-60-1600	1600	122.90	1.461	90.81	Fragmentation
N0-60-1700	1700	138.24	1.551	106.65	Comminution
R30-60-1400	1400	71.37	1.076	69.03	Crack
R30-60-1500	1500	111.96	1.301	79.28	Fragmentation
R30-60-1600	1600	141.69	1.814	87.89	Fragmentation
R30-60-1700	1700	161.32	1.943	97.89	Comminution
R70-60-1400	1400	55.21	0.963	69.81	Crack
R70-60-1500	1500	98.20	1.226	80.22	Fragmentation
R70-60-1600	1600	129.04	1.732	87.42	Fragmentation
R70-60-1700	1700	126.25	1.793	90.14	Comminution
R100-60-1400	1400	89.35	1.274	70.68	Crack
R100-60-1500	1500	106.58	1.700	75.98	Crack
R100-60-1600	1600	105.11	1.733	79.93	Fragmentation
R100-60-1700	1700	144.58	2.166	83.8	Comminution