Influence of Chemical Admixtures on Fresh and Hardened Properties of Prolonged Mixed Concrete

Table 5

Mixture proportion of concrete.

Concrete mix type	W/C	s/a	Admixture type	Unit content (kg/m^3)				Admixture dosage (% weight of cement)
				Cement	Sand	Aggregate	Water
M1	0.40	0.40	WR	340	721	1130	136	0.35
			SP1	340	718	1125	136	1.55
			SP2	340	719	1127	136	0.84
			SP3	340	719	1127	136	0.94
			SP4	340	719	1127	136	1.01
M2		0.40	WR	340	721	1130	136	0.47
			SP1	340	716	1122	136	2.23
			SP2	340	718	1125	136	1.26
			SP3	340	718	1125	136	1.32
			SP4	340	718	1126	136	1.31
M3		0.40	WR	340	721	1130	136	0.47
			SP1	340	716	1122	136	2.23
			SP2	340	718	1125	136	1.26
			SP3	340	718	1125	136	1.32
			SP4	340	718	1126	136	1.31
M4		0.45	SP1	340	806	1029	136	2.23
			SP3	340	808	1032	136	1.32
M5		0.40	SP1	380	686	1075	152	2.23
			SP3	380	688	1079	152	1.32
M6		0.40	SP1	380	686	1075	152	2.23
			SP3	380	688	1079	152	1.32
RM (reference mix)		0.40	—	340	722	1132	136	—
Total number of cases = 22
Cylinders per case = 3 × 3 (compressive strengths at 7 days, 28 days, and 90 days) + 2 (splitting tensile strengths at 28 days) = 11
Total number of cylinders = 11 × 22 = 242