Strength attributes and mixed-mode I/III cracking resistance of preplaced aggregate concrete reinforced with industrial and waste tire steel fibers.
Artykuł w czasopiśmie
MNiSW
140
Lista 2024
| Status: | |
| Autorzy: | Raeisi R., Rezaie F., Aliha M.R.M., Mohammadi M.H., Choupani Naghdali, Pietras Daniel, Sadowski Tomasz |
| Dyscypliny: | |
| Aby zobaczyć szczegóły należy się zalogować. | |
| Rok wydania: | 2026 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 538 |
| Numer artykułu: | 147262 |
| Strony: | 1 - 16 |
| Impact Factor: | 8,9 |
| Scopus® Cytowania: | 0 |
| Bazy: | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Preplaced aggregate concrete (PAC) is a special type of concrete in which coarse aggregates are first placed in a mold and then filled with flowable grout, commonly used in large-scale structures such as dams, power plants, and bridges. The absence of a full range of aggregate sizes in PAC mixtures can reduce strength and cracking resistance. Fibers are an effective approach to enhance fracture toughness and cracking resistance in such mixtures. This study investigates the effects of industrial steel fiber (ISF) and waste tire steel fiber (WTSF) on the mechanical performance of PAC. The fibers were added on a volumetric basis, with volume fractions of 0.33%, 0.66%, and 1% for WTSF, and 1%, 1.5%, and 2% for ISF. The edge notched disc bend test was used to evaluate failure modes under pure mode I (KIc), pure mode III (KIIIc), and mixed Mode I/III loading conditions. Results measured using cubic specimens in accordance with BS EN 12390–3 standard revealed that the maximum improvement in compressive strength was approximately 25% for 2% ISF and 17% for 1% WTSF, while the greatest increase in tensile strength was also observed at these dosages. Furthermore, the addition of both fiber types significantly improved fracture toughness (KC) across all loading modes, with the most pronounced enhancement observed under pure mode I. Theoretical predictions of the (KIIIc/KIc) ratio (0.49–0.63) agree well with experimental values. Comparisons between fiber types indicate that ISF provides a higher improvement in fracture toughness than WTSF. These findings demonstrate the effectiveness of steel fibers in improving the cracking resistance of PAC and provide guidance for optimizing fiber-reinforced PAC mixtures for structural applications. |
