Experimental Investigation of Damage Evolution Characteristics of C50 Concrete under Impact Load

Table 1

Mixing proportions and material category requirements of the tested concrete (C50).

Material	Categories	Requirements	Mixing proportion (kg)
Cement	P.O. 42.5		380
Fly ash	Class I	Fineness < 12%; loss of ignition < 5%; activity index > 70%	100
Fine aggregate	Medium-sized sand	Mud content < 1.0%; mud clod content < 1.0%; fineness modulus < 3.0; range of aggregate with diameter below 0.315 mm is from 25% to 30%; apparent density > 2500 kg/m^3; bulk density > 1350 kg/m^3; content below 0.315 mm has particle size ranging from 25% to 30%; apparent density > 2500 kg/m^3; bulk density > 1350 kg/m^3	692
Coarse aggregate	5–25 mm continuous grading	Mud content < 1.5%; mud clod content < 0.5%; needle tablet content < 5%; apparent density > 2500 kg/m^3, bulk density > 1350 kg/m^3	1128
Water	Water	Pure water	150
Water-reducing agent	Solid polycarboxylic	High-performance water-reducing agent	0.5