Effect of binder dosage and the use of waste rubber fiber on the mechanical and durability performance of geopolymer concrete

Yolcu, Abdurrahman; Karakoç, Mehmet Burhan; Ekinci, Enes; Özcan, Ahmet; Sağır, Mehmet Akif

doi:10.1016/j.jobe.2022.105162

Cited by 5 publications

(2 citation statements)

References 58 publications

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“…Within this perspective, researchers aim to substitute industrial steel fiber with recycled one. The scope of the research attempts could be divided into three categories: (i) fresh (Celik & Ozkilic, 2023;Eskandarinia et al, 2022;Zhong et al, 2019), (ii) mechanical (Celikten, 2022;Mucsi et al, 2018;Yolcu et al, 2022) and (iii) durability and transport properties (Althoey et al, 2023) of the recycled steel fiber reinforced geopolymers. In some cases, recycled steel fibers were hybridized with industrial steel fibers (Alsaif & Albidah, 2022) or polyvinyl alcohol (Wang et al, 2020) to benefit from the synergetic effect of fibers.…”

Section: Introductionmentioning

confidence: 99%

Mixed Mode Fracture of the Geopolymer Composites Reinforced With Recycled Steel Fibers

GÜMÜŞ,

BAYRAK

2024

Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi

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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.

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Section: Introductionmentioning

confidence: 99%

Mixed Mode Fracture of the Geopolymer Composites Reinforced With Recycled Steel Fibers

GÜMÜŞ,

BAYRAK

2024

Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi

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“…Several empirical researches have been carried out to uncover the impact of recycled steel fibers on the mechanical characteristics of geopolymer composites. One of the studies, conducted by (Yolcu et al, 2022), examined how the dose of binder affects the mechanical and durability properties of recycled steel fiber-reinforced geopolymers. According to findings, increasing the binder dosage enhances mechanical features such as compressive, flexural, and splitting tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Fracture Behavior of Geopolymer Concrete Reinforced With Recycled Steel and Glass Fibers

Bayrak,

Gümüş

2024

Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi

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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.

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Utilization of Plastic Waste in Fly Ash Geopolymer Concrete Containing Recycled Concrete Aggregate for Pavements

Wongkvanklom,

Posi,

Zaetang

et al. 2024

Arab J Sci Eng

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Effect of binder dosage and the use of waste rubber fiber on the mechanical and durability performance of geopolymer concrete

Cited by 5 publications

References 58 publications

Mixed Mode Fracture of the Geopolymer Composites Reinforced With Recycled Steel Fibers

Mixed Mode Fracture of the Geopolymer Composites Reinforced With Recycled Steel Fibers

Investigation of the Fracture Behavior of Geopolymer Concrete Reinforced With Recycled Steel and Glass Fibers

Utilization of Plastic Waste in Fly Ash Geopolymer Concrete Containing Recycled Concrete Aggregate for Pavements

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