Performance Optimization of Hybrid Carbon and Glass Fiber-Reinforced Concrete Using Taguchi Method

This research investigates the performance optimization of hybrid carbon and glass fiber-reinforced concrete using the Taguchi method. The study focuses on optimizing key parameters including fiber volume fraction, carbon/glass fiber ratio, and silica fume content to enhance mechanical properties such as compressive strength, flexural strength, and workability. Employing an L9 orthogonal array, the experiment evaluated nine configurations to identify factor influences. The carbon-to-glass fiber ratio emerged as the dominant factor, contributing 78.66% to workability variance, 87.05% to compressive strength, and 91.33% to flexural strength. Optimal configurations were determined for different priorities: 50/50 ratio at 1.0% volume fraction for balanced performance, achieving approximately 165 mm slump, 51-52 MPa compressive strength, and 7.2-7.6 MPa flexural strength. Regression models with R² > 99% enable reliable performance prediction. The hybrid approach demonstrated synergistic effects, validating its superiority over single-fiber systems for structural applications.