Impact of Flax and Basalt Fibre Reinforcement on Selected Properties of Geopolymer Composites

Frydrych, Miroslav; Hýsek, Štěpán; Fridrichová, Ludmila; Le, Van Su; Herclík, Miroslav; Pechočiaková, Miroslava; Huang, Le; Louda, Petr

doi:10.3390/su12010118

Cited by 22 publications

(15 citation statements)

References 22 publications

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“…Additionally, the flax fibers were compared with basalt fibers (both were added in amount -2.16 wt%). The results show a different pattern of failure mechanisms dependent on applied reinforcement [38].…”

Section: Introductionmentioning

confidence: 87%

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Impact of Flax Fiber Reinforcement on Mechanical Properties of Solid and Foamed Geopolymer Concrete

Korniejenko

Łach

Hebdowska-Krupa

et al. 2020

Adv. technol. innov.

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The main objective of this study is to develop the advanced composites for civil engineering applications as material for the building industry, especially for an insulation purpose. The research processes include several steps. Firstly, the prototype elements, such as bricks and elevation elements were performed from eco-friendly composite -flax fiber reinforced geopolymer. The elements were designed to take into consideration for environment. Geopolymers are environmentally friendly, sustainable, and resource efficient, including energy demand. Next, the wall was built from these elements and exposed during the three months in a relevant environment. The main conclusion of the research is that the kind of fibers is important for the mechanical properties of the composite, including the fact that for those different fibers could be more beneficial for different raw materials, giving higher strength properties. The significant influence on the mechanical properties of the composites has the adhesion between fiber and material used as a matrix. The adhesion depends among others on the previous treatment of the fibers.

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Section: Introductionmentioning

confidence: 87%

“…The flax fibers in foamed geopolymers were only investigated as an addition to long fibers [36]. The results show the positive effect of the addition to flax fibers on impact bending and flexural strength [38].…”

Section: Introductionmentioning

confidence: 99%

Impact of Flax Fiber Reinforcement on Mechanical Properties of Solid and Foamed Geopolymer Concrete

Korniejenko

Łach

Hebdowska-Krupa

et al. 2020

Adv. technol. innov.

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“…The interest in materials reinforced with natural fibers is growing because it is possible to obtain materials with good mechanical properties, low density and low cost. In addition, natural fibers are biodegradable, renewable and promote sustainability [ 12 , 13 , 14 , 15 ], which is increasingly important currently. These fibers could replace synthetic fibers in certain applications, since synthetic fibers leave a greater environmental footprint.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Natural Fiber Reinforced Foamed Concrete

et al. 2020

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The mechanical characterization of plain foamed concrete (PFC) and fiber-reinforced foamed concrete (FRFC) with a density of 700 kg/m3 was performed with compression and tension tests. FRFC was reinforced with the natural fiber henequen (untreated or alkaline-treated) at volume fractions of 0.5%, 1% and 1.5%. Polypropylene fiber reinforcement was also used as a reference. For all FRFCs, the inclusion of the fibers enhanced the compressive and tensile strengths and plastic behavior, which was attributed to the increase of specimen integrity. Under compressive loading, after the peak strength, there was no considerable loss in strength and a plateau-like regime was observed. Under tensile loading, the fibers significantly increased the tensile strength of the FRFCs and prevented a sudden failure of the specimens, which was in contrast to the brittle behavior of the PFC. The tensile behavior enhancement was higher when treated henequen fibers were used, which was attributed to the increase in the fiber–matrix bond produced by the alkaline treatment. The microscopic characterization showed that the inclusion of fibers did not modify the air-void size and its distribution. Higher energy absorption was observed for FRFCs when compared to the PFC, which was attributed to the enhanced toughness and ductility by the fibers. The results presented herein warrant further research of FRFC with natural henequen fibers for engineering applications.

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“…The mechanism of reinforcement could be related to the kind of flax fibres used [18,26]. A lot of advantages could lead to the application of long flax fibres or flax fabric as reinforcement [27,28].…”

Section: Discussionmentioning

confidence: 99%

The influence of fibre pre-treatment on the mechanical properties of the geopolymer composites

et al. 2020

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This article aims to analyse the long-term influence of the pre- treatment method on mechanical properties such as the compressive strength of geopolymer composites reinforced with short natural fibres (length of around 5 mm). This paper presents the behaviour of sodium activator-synthesised fly ash geopolymer containing natural fibres at ambient temperatures. Fly ash from the Skawina coal power plant (located in: Skawina, Lesser Poland, Poland) was used as a raw material. The chemical composition of the fly ash was typical for class F. The article evaluated the methods of pre-treatment of the fibres on the mechanical properties of the geopolymer composites. It compares the plain specimens and composites with fibres pre-treated in water and alkali solutions as well as with fibres without any pre-treatment. The fibres were added at the amount of 1% by weight. The investigation was made by visual analysis and the testing of mechanical properties (compressive and flexural strength at ambient temperature) after 6 months. The achieved results do not confirm the positive influence of the fibre pre-treatment on the mechanical properties of the composites.

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Impact of Flax and Basalt Fibre Reinforcement on Selected Properties of Geopolymer Composites

Cited by 22 publications

References 22 publications

Impact of Flax Fiber Reinforcement on Mechanical Properties of Solid and Foamed Geopolymer Concrete

Impact of Flax Fiber Reinforcement on Mechanical Properties of Solid and Foamed Geopolymer Concrete

Mechanical Properties of Natural Fiber Reinforced Foamed Concrete

The influence of fibre pre-treatment on the mechanical properties of the geopolymer composites

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