Optimization of the Mixture Design of Low-CO₂ High-Strength Concrete Containing Silica Fume

Table 3

Constraints of the ratios of concrete components.

	Water-to-binder ratio	Water-to-cement ratio	Sand ratio	Silica fume-to-binder ratio	Superplasticizer-to-binder ratio
Lower limit	0.18	0.211	0.35	0.05	0.0188
Upper limit	0.27	0.317	0.39	0.25	0.0469