Research Article
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/m3) | 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 |
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