Optimization of Reinforced Concrete Mix Design with Hybrid Fibers Using Taguchi Method

Optimizing concrete mix design is a critical challenge in modern structural engineering, particularly when multiple materials and proportions interact non-linearly. This study presents a systematic optimization of M40 grade concrete incorporating a hybrid fiber combination of Basalt Fiber (BF), Glass Fiber (GF), and Polypropylene Fiber (PF) using the Taguchi L27 orthogonal array. Seven control factors — cement content, water-cement (W/C) ratio, fine aggregate (FA), coarse aggregate (CA), basalt