Abstract

This study develops an innovative self-compacting glass fiber-reinforced concrete (SC-GRC) using calcium sulpho-aluminate cement (CSA) as a low-carbon alternative to Portland cement. The mix design was optimized to meet self-compacting and strength requirements, incorporating various dosages of alkali-resistant glass fiber (AR-GF) and superplasticisers. Workability, mechanical properties, dimensional stability, and durability were comprehensively evaluated. Results showed that SC-GRC containing CSA cement exhibited superior early-age strength, reduced shrinkage, and enhanced workability compared to ordinary GRC. The optimal fiber content (1.5% by volume) significantly improved flexural performance and post-cracking behavior, while the CSA binder enhanced sulfate resistance and dimensional stability. Microstructural analysis confirmed the dense matrix and strong fiber–matrix interface. The developed SC-GRC presents a promising material for sustainable prefabrication, offering improved durability, reduced carbon footprint, and enhanced mechanical properties. This research contributes to the advancement of eco-efficient, high-performance cement-based composites for construction and infrastructure applications.