Research Article

INVESTIGATION OF THE FRACTURE BEHAVIOR OF GEOPOLYMER CONCRETE REINFORCED WITH RECYCLED STEEL AND GLASS FIBERS

Volume: 27 Number: 2 June 3, 2024
EN TR

INVESTIGATION OF THE FRACTURE BEHAVIOR OF GEOPOLYMER CONCRETE REINFORCED WITH RECYCLED STEEL AND GLASS FIBERS

Abstract

The brittleness of the geopolymer composites is an issue for its widespread use worldwide. Therefore, several types of fibers have been added to the geopolymer mixture to provide a ductile manner. In this work, the recycled steel fibers were employed in a hybrid form with glass fibers to take advantage of the low carbon emission in the production process of recycled steel fibers. The total fiber content was taken as constant 0.6% by volume. Five dissimilar geopolymer batches were handled and two concrete prisms were cast for each batch. Those prisms were tested under three-point loading and the deformed shapes of the specimens’ surface were captured by digital camera to generate the surface displacement field. The fracture characteristics of the notched prisms were criticized in terms of (i) load-CMOD response, (ii) crack progress ahead of the pre-notch, (iii) fracture energy, (iv) ultimate load-bearing capacity, and (v) unstable fracture toughness. Test results revealed that the residual strength, the ultimate load, and the fracture energy of fiber-reinforced geopolymers had a decreasing trend with the increasing recycled steel fiber ratio in the hybrid blend. The reasonable cause of that finding was the heterogeneous distribution of the recycled steel fibers.

Keywords

References

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Details

Primary Language

English

Subjects

Fracture Mechanics , Construction Materials

Journal Section

Research Article

Publication Date

June 3, 2024

Submission Date

October 12, 2023

Acceptance Date

November 11, 2023

Published in Issue

Year 1970 Volume: 27 Number: 2

APA
Bayrak, H., & Gümüş, M. (2024). INVESTIGATION OF THE FRACTURE BEHAVIOR OF GEOPOLYMER CONCRETE REINFORCED WITH RECYCLED STEEL AND GLASS FIBERS. Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi, 27(2), 386-400. https://doi.org/10.17780/ksujes.1375200