Fig. 9

Batch-specific curing optimization restores UHPC strength. Arrows indicate the shift from original (triangles) to optimized (circles) 28-day compressive strength; labels show \(\Delta \textit{CS28}\) and recommended changes in CT1, CT28, CC1, CC28. The red dashed line marks the 120 MPa target. Modest adjustments recover 11.7–31.9 MPa, bringing all batches to 118–122 MPa. Abbreviations are defined in Table 1. (Exp. Nr.: Experiment number).