Experimental evaluation of the synergistic influence of GGBFS and steel fibers on the physical, mechanical, and durability characteristics of recycled aggregate concrete
Reviews on Advanced Materials Science, cilt.65, sa.1, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 65 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1515/rams-2025-0273
- Dergi Adı: Reviews on Advanced Materials Science
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC, Directory of Open Access Journals, Academic Search Ultimate (EBSCO)
- Anahtar Kelimeler: compressive strength, ground granulated blast-furnace slag, rapid chloride permeability, recycled aggregate concrete, steel fibers
- Van Yüzüncü Yıl Üniversitesi Adresli: Evet
Özet
This study investigates the combined effects of ground granulated blast-furnace slag (GGBFS) and steel (ST) fibers on the mechanical and durability performance of recycled aggregate concrete (RAC) produced with 100 % recycled aggregates. Five mixtures were prepared, including a control mix (K0), a GGBFS-modified mix with 15 % replacement (K1), and three fiber-reinforced mixes containing 0.25 %, 0.50 %, and 0.75 % ST fibers (K2–K4). The results show that incorporating GGBFS improves matrix densification, reducing water absorption and chloride permeability while enhancing compressive strength. Among all mixtures, K2 (15 % GGBFS + 0.25 % ST fibers) exhibited the best overall performance, achieving the highest compressive strength and improved durability compared to the control mixture. The addition of ST fibers enhanced flexural strength through crack-bridging; however, higher fiber contents reduced compressive strength and durability due to fiber-induced voids and reduced compaction efficiency. The findings indicate that an optimal fiber dosage exists for balancing strength and durability in RAC. The novelty of this study lies in revealing the synergistic and competing effects of GGBFS and ST fibers in fully recycled concrete systems. The optimized mixture offers a practical, sustainable solution for structural applications that require improved durability and reduced environmental impact.