Table 4.

Physical properties of the concretes.

Parameter	C0	C1	C2	C3
Density of mixture (kg/m3)	2590	2560	2450	2342
CV	3.4	2.6	3.7	4.1
Consistency time (s)	21	24	28	31
CV	1.0	0.3	1.0	0.5
Class	V1	V1	V1	V0
Bulk density ρ (kg/m3)	2536	2450	2319	2240
CV	2.3	2.3	2.1	2.2
Open porosity (%)	8.89	9.35	9.40	10.21
CV	0.5	0.5	0.6	0.7
Water absorption (%)	3.21	3.56	4.06	4.98
CV	0.60	0.54	0.23	0.31

CV = Coefficient of variation.