Comprehensive experimental research on SCC with low hybrid fiber content: From workability to mechanical properties
Küçük Resim Yok
Tarih
2026
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ernst & Sohn
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Hybrid fiber-reinforced self-compacting concrete (SCC) is gaining widespread popularity in construction engineering applications owing to its superior hardened concrete properties, while it isn't valid for workability, especially when it includes a high volume of fibers. While the incorporation of fibers can enhance the performance of SCC, it often challenges key fresh properties such as flowability and passing ability, thereby necessitating mix adjustments that result in additional costs. Furthermore, the high cost of fibers requires careful determination of the optimal fiber type combination and content. In this context, the aim and objective of this work is to comprehensively investigate the effects of different types (steel and synthetic) and combination (single, binary and ternary) of fibers on the workability (slump-flow, T500, J-ring and V-funnel) and mechanical (compressive strength, splitting tensile strength, elastic modulus, shear strength, and flexural tensile strength) properties of SCC mixes with low hybrid fiber content (total by volume 0.75%). After defining the workability properties of all mixes, mechanical property tests were performed on samples with curing periods of 7-, 28-, and 56-days. According to the results obtained, all fiber-reinforced SCC mixes exhibit high performance in terms of both workability and mechanical properties. In particular, binary hybrid fiber systems containing long hooked-end steel fibers and short straight steel fibers provided the best overall performance, yielding more effective outcomes compared to other mixes. In conclusion, this work has demonstrated that SCC mixes with low hybrid fiber content can successfully meet a wide range of engineering requirements, from workability to mechanical performance. This also implies that these mixes offer significant advantages in terms of both cost-effectiveness and ease of application due to workability superior of SCC mixes with low hybrid fiber content. These outcomes emphasize that SCC mixes with low hybrid fiber content can be safely used in structural concrete members subjected to complex loads such as punching, shear, and bending, and may offer more economical and sustainable alternatives to high-fiber content systems.
Açıklama
Anahtar Kelimeler
low hybrid fiber content, mechanical, self-compacting concrete, steel fiber, workability
Kaynak
Structural Concrete
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
