Fig. 3
From: Optimizing calcium efficiency for sustainable cement with GGBFS-fly ash systems
Drying shrinkage of cement paste using supplementary cementitious materials over 28 days. (a) Group I (b), Group II (c), Group III, (d), Group IV. Error bars represent standard deviation (n = 5). Statistical analysis confirmed significant differences among formulations (F = 4.88, p < 0.0001).
