A Computer-Aided Approach to Pozzolanic Concrete Mix Design

Table 5

Relationship between water to cementitious material ratio and compressive strength of concrete “Table 5 is reproduced from Kosmatka et al. [39] (under the creative commons attribution license/public domain).”

Compressive strength at 28 days (MPa)	Water-cementitious materials ratio (by mass)
	Non-air-entrained concrete	Air-entrained concrete
45	0.38	0.30
40	0.42	0.34
35	0.47	0.39
30	0.54	0.45
25	0.61	0.52
20	0.69	0.60
15	0.79	0.70