MIXED MODE FRACTURE OF THE GEOPOLYMER COMPOSITES REINFORCED WITH RECYCLED STEEL FIBERS

Muhammed Gümüş; Hakan Bayrak

doi:10.17780/ksujes.1375088

EN TR

MIXED MODE FRACTURE OF THE GEOPOLYMER COMPOSITES REINFORCED WITH RECYCLED STEEL FIBERS

Abstract

For the fiber-reinforced composites, strength-based criteria alone may fail to evaluate the bending response due to the long tail of the load-displacement curve. Hence, the fracture characterization of fibered composites has gained great attention worldwide. In this study, the mixed-mode fracture performance of the recycled steel fiber-reinforced geopolymer concrete was examined experimentally. The main test parameters were the amount of steel fibers (0 and 2% by mass) and the offset ratios of the edge notch (β = 0, 0.2, and 0.4). Several notched prisms were produced and tested under a deformation-controlled three-point bending test. Deformation maps on the surface of the specimens were derived through the digital image correlation method. Experimental results were discussed concerning the first cracking load, ultimate load, critical crack mouth opening displacement, critical crack mouth sliding displacement, and fracture energy. Based on the experimental findings, it can be stated that the peak flexural loads were increased by 666%, 1327%, and 400%, respectively for the 0, 0.2, and 0.4 notch offset ratios due to the use of recycled steel fiber. The fracture energies of the plain specimens were proportional to the notch offset ratio, but they fluctuated for the fiber-reinforced specimens because of the uneven distribution of fibers.

Keywords

References

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Details

Primary Language

English

Subjects

Fracture Mechanics , Construction Materials

Journal Section

Research Article

Authors

Muhammed Gümüş ^*
0000-0002-7380-0098
Türkiye

Hakan Bayrak
0000-0001-9441-2214
Türkiye

Publication Date

March 3, 2024

Submission Date

October 12, 2023

Acceptance Date

November 8, 2023

Published in Issue

Year 1970 Volume: 27 Number: 1

DOI

https://doi.org/10.17780/ksujes.1375088

IZ

https://izlik.org/JA92CG59ED

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RIS / Bibtex

APA

Gümüş, M., & Bayrak, H. (2024). MIXED MODE FRACTURE OF THE GEOPOLYMER COMPOSITES REINFORCED WITH RECYCLED STEEL FIBERS. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 27(1), 232-242. https://doi.org/10.17780/ksujes.1375088

MIXED MODE FRACTURE OF THE GEOPOLYMER COMPOSITES REINFORCED WITH RECYCLED STEEL FIBERS

MIXED MODE FRACTURE OF THE GEOPOLYMER COMPOSITES REINFORCED WITH RECYCLED STEEL FIBERS

Abstract

Keywords

ATIK ÇELİK LİFLERLE GÜÇLENDİRİLMİŞ GEOPOLİMER BETONLARDA KARIŞIK MOD KIRILMASI

Öz

Anahtar Kelimeler

References

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Subjects

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Acceptance Date

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