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

<div>Normal distribution of residuals: (a) 28-day compressive strength (R1); (b) 28-day flexural strength (R2); (c) 28-day flexural-compressive ratio (R3).</div>

Advances in Civil Engineering

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Figure 12

Figure 12: Effect of Hybrid Steel-Basalt Fiber on Behaviors of Manufactured Sand RPC and Fiber Content Optimization Using Center Composite Design 