A Study of Dynamic Loading and Unloading Damage of Fiber-Reinforced Concrete under Confining Pressure

Table 3

Measured permeability of C50S1.2 test block in dynamic loading and unloading test (the confining pressure value is 1 MPa).

Axial Load (MPa)	Loading speed, 0.5 MPa/s	Loading speed, 1.0 MPa/s	Loading speed, 1.5 MPa/s	Loading speed, 3.0 MPa/s
	Measured value of permeability (e − 16 m^2)
1	2.55	2.68	2.66	2.74
5	3.46	3.60	7.15	13.55
10	3.55	4.54	11.34	29.39
15	3.68	5.87	21.48	76.34
20	5.45	7.77	28.35	122.37
10	4.34	5.24	17.68	56.54
5	3.77	4.28	10.24	43.56
1	3.34	3.77	8.17	39.75