Research on Dynamic Compressive Performance of Polypropylene Fiber-Reinforced High-Strength Concrete under Freeze-Thaw Environment

Table 3

Dynamic compression test results.

Label	Times of freeze-thaw cycles	Velocity (m/s)	Strain rate ()	The peak intensity of stress-strain curve (MPa)
FT0	0	6.24	79	69.31
FT25	25	6.26	78	67.76
FT50	50	6.25	81	65.78
FT75	75	6.26	77	66.44
FT100	100	6.25	78	64.65
AVG	—	6.252	78.6	—
FT0	0	7.9	107	77.56
FT25	25	7.9	109	73.44
FT50	50	7.9	98	73.62
FT75	75	8	105	74.98
FT100	100	7.9	104	73.12
AVG	—	7.92	104.6	—
FT0	0	8.9	133	85.42
FT25	25	8.9	131	85.39
FT50	50	9	130	84.27
FT75	75	8.9	139	84.05
FT100	100	8.9	133	86.07
AVG	—	8.92	133.2	—
FT0	0	11.4	205	99.81
FT25	25	11.4	201	99.23
FT50	50	11.4	204	102.11
FT75	75	11.5	213	92.54
FT100	100	11.4	218	98.39
AVG	—	11.46	207.8	—