Revised Rebound Hammer and Pull-Out Test Strength Curves for Fiber-Reinforced Concrete

Table 2

Mixing proportions of the different grades of concrete.

Group	Cement (kg/m^3)	Sand (kg/m^3)	Water (kg/m^3)	Stone (kg/m^3)	Superplasticizer (kg/m^3)
C25	314	728	174	1188	0.784
C30	357	677	174	1203	0.891
C35	400	627	174	1216	0.999
C40	443	578	174	1228	1.107
C45	486	548	174	1221	1.214
C50	529	520	174	1213	1.322