Effect of Hybrid Steel-Basalt Fiber on Behaviors of Manufactured Sand RPC and Fiber Content Optimization Using Center Composite Design

Figure 13

Perturbation plot for (a) 28-day compressive strength (R1); (b) 28-day flexural strength (R2); (c) 28-day flexural-compressive ratio (R3).

(a)

(b)

(c)