Study on mechanical properties and solidification mechanism of stabilized dredged materials with recycled GFRP fibre reinforced geopolymer

Zhang, Mo; Na, Mingyu; Yang, Zhenjia; Shi, Yupeng; Guerrieri, Maurice; Pan, Zhu

doi:10.1016/j.cscm.2022.e01187

Cited by 6 publications

(7 citation statements)

References 30 publications

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“…The study of Wongsa shows that sisal fiber reinforced geopolymer possesses the greatest tensile strength, while the tensile strength of coconut fiber reinforced geopolymer increases with the increase of coconut fiber 24 . However, Zhang's research shows that the tensile strength increases by 4.6%, 21.3%, 4.3% and 74.3%, respectively by adding 1% single fiber PP, PVA, RPP and steel fiber into the geopolymer 38 . Steel fiber is most effective in improving tensile strength because of its high tensile strength and stiffness, but the tensile strength of geopolymer with PVA, PP and RPP increases by 38.2%, 36% and 48.9% by the incorporation of mixed fibers.…”

Section: Mechanical Properties Of Fiber Reinforced Geopolymersmentioning

confidence: 96%

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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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Section: Mechanical Properties Of Fiber Reinforced Geopolymersmentioning

confidence: 96%

“…The proper uniformity and high pressure compaction between the fiber and the cement matrix can improve the compressive strength by the application of fibers. However, for geopolymer, different fibers exercise different effects on the compressive strength 38 …”

Section: Mechanical Properties Of Fiber Reinforced Geopolymersmentioning

confidence: 99%

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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Section: Compressive Strengthmentioning

confidence: 99%

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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“…As a binder, they used cement with the addition of ash up to 20%, on the basis of which they concluded that ash and sludge can be used as embankments of material [3]. Many papers are related to the use of waste and recycled materials [4][5][6][7][8][9] for the production of pavement layers and with the addition of binders in order to improve the load-bearing capacity in the layer. This paper presents the basic physical and mechanical tests of the pavement base with and without the addition of binders, in order to be able to compare the values and show how much the hydraulic binder has improved in terms of natural soil characteristics.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the hydraulic binder use for base strengthening in pavement constructions

Šešlija¹,

Peško²,

Mirković³

et al. 2022

Engineering Today

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The paper presents the application of cement stabilization in the world and in our country. In addition to the literature review, basic physical - mechanical tests of the pavement base without the use of hydraulic binder and with the use of hydraulic binder with different percentages of participation (3, 5, and 7%) were given. The hydraulic binder of the manufacturer LaFarge HRB 12.5 was used as a binder, and the material on which this binder was tested is a clay material taken from Subotica. Using this binder, it was concluded that any percentage of binder leads to significant improvement of the placenta and thus improves the load-bearing capacity of the pavement structure.

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Study on mechanical properties and solidification mechanism of stabilized dredged materials with recycled GFRP fibre reinforced geopolymer

Cited by 6 publications

References 30 publications

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

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

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

Analysis of the hydraulic binder use for base strengthening in pavement constructions

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