Influence of Chemical Admixtures on Fresh and Hardened Properties of Prolonged Mixed Concrete
Table 4
Details of different types of concrete mixture.
Mix type
Details
M1
W/C = 0.40; s/a = 0.40; C = 340 kg/m3; average admixture dosage
M2
W/C = 0.40; s/a = 0.40; C = 340 kg/m3; maximum admixture dosage
M3
W/C = 0.40; s/a = 0.40; C = 340 kg/m3; maximum admixture dosage in two stages: 2/3 at the beginning and 1/3 when slump ≤ 3 cm
M4
W/C = 0.40; s/a = 0.45; C = 340 kg/m3; maximum admixture dosage in two stages: 2/3 at the beginning and 1/3 when slump ≤ 3 cm
M5
W/C = 0.40; s/a = 0.40; C = 380 kg/m3; maximum admixture dosage in two stages: 2/3 at the beginning and 1/3 when slump ≤ 3 cm
M6
W/C = 0.40; s/a = 0.40; C = 380 kg/m3; maximum admixture dosage in two stages: 2/3 at the beginning and 1/3 when slump ≤ 3 cm; chilled water used (1/2 of the total water (by weight) was ice)
RM (reference mix)
W/C = 0.40; s/a = 0.40; C = 340 kg/m3; no admixture
