Evaluation of properties of steel fiber reinforced GGBFS-based geopolymer composites in aggressive environments

Farhan, Khatib Zada; Johari, Megat Azmi Megat; Demirboğa, Ramazan

doi:10.1016/j.conbuildmat.2022.128339

Cited by 22 publications

(28 citation statements)

References 120 publications

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“…Due to the high rigidity of steel fibers, its addition improves the compressive strength of geopolymer. The experimental results of Zada Farhan show that 6mm steel fibers improve the compressive strength more efficiently than 12mm steel fibers [34], and that the alumina coating can improve the interfacial bonding strength between steel fiber and geopolymer, which is 151% higher than that of uncoated steel fiber [3].…”

Section: Compressive Strengthmentioning

confidence: 98%

Mechanical properties and durability of fiber reinforced geopolymer composites: A review on recent progressd

Qin

Yan

Zhou

et al. 2022

Preprint

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Geopolymer concrete shares similar mechanical properties with ordinary Portland cement (OPC) concrete, and is even provided with better performances in high temperature and high corrosion circumstances. However, geopolymer binder is still subject to the disadvantages of large shrinkage and high brittleness, which greatly limit its application. Fiber reinforcement is widely used in various geopolymer systems to overcome the brittleness issue, but retains the high strength. Over the past 10 years, a significant advance has been made in the research of fiber reinforced geopolymers in terms of toughening efficiency and durability improvement. This paper, as a mini review, focuses on three types of fibers, i.e., inorganic fiber, natural fiber and synthetic fiber, in geopolymers, and their specific effects on compressive, flexural and tensile strengths, fractural toughness, shear strength and durability including shrinkage, chemical and freezing-thaw resistances. The recement understanding of bonding mechanism and fiber-geopolymer interface are also discussed, and knowledge gaps and future work challenges are correspondingly pointed out.

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Section: Compressive Strengthmentioning

confidence: 98%

Mechanical properties and durability of fiber reinforced geopolymer composites: A review on recent progressd

Qin

Yan

Zhou

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Due to the high rigidity of steel fibers, its addition improves the compressive strength of geopolymer. The experimental results of Zada Farhan show that 6 mm steel fibers improve the compressive strength more efficiently than 12 mm steel fibers, 40 and that the alumina coating can improve the interfacial bonding strength between steel fiber and geopolymer, which is 151% higher than that of uncoated steel fiber 48 . With the increase of polypropylene fiber content, the decrease in strength is attributed to the formation of interpolymer voids and weak interfacial bonding zone.…”

Section: Mechanical Properties Of Fiber Reinforced Geopolymersmentioning

confidence: 99%

“…Effect of fiber content on the compressive strength of geopolymer 15–17,21,24,26,31,39–47 . Reproduced with permission 15–17,21,24,26,31,39–47 . Elsevier 2023.…”

Section: Mechanical Properties Of Fiber Reinforced Geopolymersmentioning

confidence: 99%

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Mechanical properties and durability of fiber reinforced geopolymer composites: A review on recent progress

Qin,

Yan,

Zhou

et al. 2023

Engineering Reports

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Geopolymer concrete has similar mechanical properties to ordinary Portland cement (OPC) concrete, and even better properties in high temperature, high corrosion environment. However, geopolymer still has the disadvantages of large shrinkage and high brittleness, which greatly limit its application. Fiber reinforcement is widely used in various geopolymer systems to overcome the brittleness issue, but still retains the high strength. Over the past 10 years, great progress has been made in the research of fiber reinforced geopolymers in the aspect of toughening efficiency and durability improvement. Many studies have been conducted on fiber reinforced geopolymers, but there are still few systematic summaries on the addition of inorganic fibers and organic fibers to geopolymers. What is more there are many novel studies such as the application of geopolymers to 3D printing and the new concept of fiber factor have not been reviewed. In this paper, inorganic fibers, natural fibers and synthetic fibers in geopolymers are briefly reviewed, and their specific effects on geopolymers' compressive, flexural, tensile strength, fracture toughness, shear strength and durability such as shrinkage, chemical resistance, freeze–thaw resistance are reviewed. The current understanding of bonding mechanism and fiber‐geopolymer interface are also discussed, and related knowledge gaps and future work challenges are correspondingly pointed out.

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“…It is reported that the production of one ton of cement will release one ton of carbon dioxide, and the carbon dioxide released by the production of cement accounts for about 5–7% of the total global carbon dioxide emissions [ 3 , 4 , 5 , 6 ]. Additionally, cement manufacturing requires continuous electrical energy, and its energy consumption is second only to steel and aluminum [ 7 ], which exerts enormous pressure on energy consumption [ 8 ]. Currently, countries around the world are increasingly concerned about the environmental sustainability of the construction industry.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Fiber on the Mechanical Properties of Geopolymer Concrete: A Review

et al. 2023

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Geopolymer is widely used as a supplement to cementitious composites because of its advantages of low carbon and environmental protection, and geopolymer concrete is also broadly used in practical engineering. In recent years, geopolymer concrete has attracted increasing interest owing to its superior mechanical properties, and a series of research results have been obtained. In this paper, from the preparation of geopolymer concrete, based on the characteristics that geopolymer concrete is brittle and easy to crack, the types and basic properties of fibers to enhance the toughness of concrete are analyzed, the advantages and disadvantages of different fibers used as a material to enhance the toughness of concrete are summarized, and we review the effects of type, shape, volume rate, aspect ratio, and hybrid fiber combinations on the static mechanical properties. The results indicate that fibers have significant potential to enhance the compressive strength, splitting tensile strength, flexural strength, and fracture toughness of geopolymer concrete, and the optimal fiber volume rate seems to be related to the fiber type. Whereas the effect of aspect ratio and hybrid fiber combinations on the properties of geopolymer concrete seems to be obvious. This paper reviews the influence of fiber on the basic mechanical properties of geopolymer concrete, which provides a solid foundation to promote the further development and application of the research on the toughness of fiber-reinforced geopolymer concrete and provides recommendations for future research.

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Evaluation of properties of steel fiber reinforced GGBFS-based geopolymer composites in aggressive environments

Cited by 22 publications

References 120 publications

Mechanical properties and durability of fiber reinforced geopolymer composites: A review on recent progressd

Mechanical properties and durability of fiber reinforced geopolymer composites: A review on recent progressd

Mechanical properties and durability of fiber reinforced geopolymer composites: A review on recent progress

The Influence of Fiber on the Mechanical Properties of Geopolymer Concrete: A Review

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