Issue 66

S.E. Daguiani et alii, Frattura ed Integrità Strutturale, 66 (2023) 88-111; DOI: 10.3221/IGF-ESIS.66.05

the experimental findings and the expected values from models. Based on the statistical model for predicting the initial setting time, it can be observed that the single factor that affects the initial setting time is GGBS, WGP, and PC, respectively. Previous research [39,40] has demonstrated that an increased dosage of GGBS delays the setting time. According to Heikal et al. [41], the excellent dispersion of GGBS particles caused the delay by decelerating the initial hydration rate. Under the action of binary combination, (WGP-GGBS) has the most influence, followed by (PC-WGP), and (PC-GGBS) has a negligible effect on the initial setting time. With the inclusion of WGP and GGBS as cement replacements, the initial setting time increases to 205 min and 207 min at 30 wt% of WGP and GGBS, respectively. In comparison, the reference mixture's initial setting time is 195 min.

(a)

(b)

(c) Figure 7: (a) Correlation curve between the observed (experimental) results and the expected results for consistency; (b) Residue vs. expected consistency; (c) Iso-response curve for consistency.

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