Experimental Investigation on the Interfacial Debonding between FRP Sheet and Concrete under Medium Strain Rate

Table 2

Components and mix proportion of the concrete.

Concrete strength grade	Mix portion of components				Compressive strength (MPa)	Tensile strength (MPa)
	Cement	Gravel	Sand	Water
C20	1	0.75	2.72	4.35	21.6	1.55
C30	1	0.51	1.66	3.21	31.0	2.21
C40	1	0.41	1.21	2.64	45.9	2.45