A Study of Impact Response and Its Numerical Study of Hybrid Polypropylene Fiber-Reinforced Concrete with Different Sizes

Table 4

The dynamic characteristic parameters of HPFRC in the SHPB test.

Specimen no.	Impact load (MPa)	Strain rate (s^−1)	Compressive strength (MPa)	DCF	Peak strain (10^−3)	Ultimate strain (10^−3)	ITP (kJ·m^−3)	ITMAX (kJ·m^−3)
A1	0.3	34	45.13	1.525	3.790	17.11	112.1	468.8
	0.35	63	48.20	1.628	4.276	12.58	143.2	419.7
	0.4	74	50.20	1.696	4.173	13.57	153.3	484.1
	0.45	89	52.23	1.765	4.824	14.35	188.1	540.3
	0.5	113	55.42	1.872	3.959	16.30	163.9	657.5
A2	0.3	30	47.27	1.560	6.445	14.52	222.0	486.4
	0.35	58	54.02	1.783	5.982	15.77	219.2	571.1
	0.4	83	53.65	1.771	7.424	16.86	300	646.0
	0.45	95	53.40	1.762	7.386	19.86	255.9	661.7
	0.5	104	60.75	2.005	8.801	19.83	408.6	834.9
A3	0.3	28	68.78	2.053	5.405	16.49	251.2	758.9
	0.35	61	70.72	2.111	4.067	14.46	205.1	622.6
	0.4	78	75.32	2.248	5.383	18.13	302.9	891.6
	0.45	96	85.91	2.564	8.268	18.59	516.8	1121.1
	0.5	108	92.9	2.773	5.132	17.53	339.8	999.2
A4	0.3	34	68.13	1.914	4.824	13.61	248.9	605.9
	0.35	64	70.25	1.973	9.476	15.90	429.4	710.9
	0.4	83	72.69	2.042	9.076	22.95	450.0	1047.1
	0.45	92	74.38	2.089	6.411	17.54	337.6	832.8
	0.5	98	77.6	2.180	6.905	20.82	389.8	1051.3
A5	0.3	37	69.85	1.810	6.871	18.03	351.8	820.2
	0.35	63	71.50	1.852	7.103	19.02	375.6	904.2
	0.4	72	74.78	1.937	3.760	19.59	204.5	1026.1
	0.45	89	75.09	1.945	4.486	21.31	267.9	912.6
	0.5	103	80.60	2.088	4.670	22.70	293.2	895.8
A6	0.3	31	65.43	1.656	3.607	12.76	147.5	509.2
	0.35	71	69.28	1.754	7.475	17.96	385.1	837.0
	0.4	82	71.11	1.800	8.522	21.48	438.9	954.6
	0.45	94	71.49	1.810	5.498	20.77	293.2	946.2
	0.5	111	80.60	2.041	4.670	24.73	355.0	1290.8