A Computer-Aided Approach to Pozzolanic Concrete Mix Design

Table 3

Approximate mixing water and target air content requirements for different slumps and nominal maximum sizes of aggregate “Table 3 is reproduced from Kosmatka et al. [39] (under the creative commons attribution license/public domain).”

Slump (mm) or air content	Water, kilograms per cubic meter of concrete, for indicated sizes of aggregate (kg/m^3)
	9.5 mm	12.5 mm	19 mm	25 mm	37.5 mm	50 mm	75 mm	150 mm
Non-air-entrained concrete
25 to 50	207	199	190	179	166	154	130	113
75 to 100	228	216	205	193	181	169	145	124
150 to 175	243	228	216	202	190	178	160	–
Approximate amount of entrapped air in non-air-entrained concrete (%)	3	2.5	2	1.5	1	0.5	0.3	0.2
Air-entrained concrete
25 to 50	181	175	168	160	150	142	122	107
75 to 100	202	193	184	175	165	157	133	119
150 to 175	216	205	197	184	174	166	154	–
Recommended average total air content, percent, for level of exposure:
Mild exposure	4.5	4.0	3.5	3.0	2.5	2.0	1.5	1.0
Moderate exposure	6.0	5.5	5.0	4.5	4.5	4.0	3.5	3.0
Severe exposure	7.5	7.0	6.0	6.0	5.5	5.0	4.5	4.0