Durability of chemically modified sisal fibre in cement-based composites

Klerk, M.; Kayondo, M.; Moelich, G.M.; Villiers, Wibke de; Combrinck, Riaan; Boshoff, William P.

doi:10.1016/j.conbuildmat.2019.117835

Cited by 69 publications

(34 citation statements)

References 26 publications

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“…One of the main concerns in the development of natural fiber reinforced mortars is the durability of the fibers in the alkaline environment of cement. Several studies have shown that the durability of these materials can be improved by treating the fibers with chemical or thermal treatments [ 22 , 24 ]. The fire resistance of natural fiber reinforced cement-based materials should also be investigated, considering that research addressing this issue remains scarce [ 47 ].…”

Section: Resultsmentioning

confidence: 99%

“…The low degradation resistance of lignin and hemicellulose in highly alkaline environments can cause a decrease in integrity and stability of the cell wall of natural fibers in cement-based materials [ 20 ]. The durability of natural fiber-reinforced cementitious materials can be improved by polymer coating [ 21 ], chemical treatment [ 22 ], hornification [ 23 ] or thermal treatment [ 24 ] of the fibers.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Natural Fiber Reinforced Foamed Concrete

et al. 2020

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“…e fibers traditionally used were carbon, glass, and others. e plastics reinforced with sisal [10,11], jute [12,13], bamboo [14], and porcelain fibers [15], amongst the natural fibers, have attracted attention for their low cost compared to man-made fibers [16,17]. Graphite is a pure carbon in crystalline form, very similar to mica sheets formed tightly by bound atoms [18,19].…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Experimental Study of Thermal and Mechanical Behaviour of Graphite‐Filled UJF Composite

Reddy¹,

Vardhan²,

Reddy³

et al. 2021

Advances in Materials Science and Engineering

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The advancement of composites mixed with natural fibers and with fillers has become the most supportable alternative material for engineering applications, especially in industries such as automotive and aerospace. Natural fibers are renewable, cheap, biodegradable, and ecological materials. In the present work, already used woven jute fibers, which are extracted from gunny bags with the same grams per square meter (GSM), were used, and then, woven jute fibers were chemically treated to improve their characteristics. Graphite powder-filled used jute fiber reinforced epoxy composite (UJF) are prepared by using the hand-layup technique. Tests such as tensile, flexure, impact, and thermo-gravimetric analysis (TGA) were conducted. These tests were according to ASTM standards to evaluate the effect of graphite filler content on hybrid epoxy jute composites. The composite material is prepared by changing the content by weight of the filler by 3%, 6%, 9%, and 12%. The experimental results reveal that 6% of the graphite composites showed the maximum tensile strength and modulus. With the increase in the filler content, there is a decrease in the flexural properties. The impact resistance increases slightly up to 6% of the filler content. The study of thermal decomposition showed that the lowest mass loss was found at 9% by weight of the filler content. Morphological analysis performed by FE-SEM showed that the addition of filler content improved the binding of the fiber and matrix up to 6% by weight of the filler content. It should be noted that these hybrid composites are a promising material at low cost for lightweight structural applications.

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“…The availability of natural fibres is directly related to the climatic zones. This is particularly true for plant fibres, like jute [3], coir [4], sisal [5,6], bamboo [7], wood [8], palm leaf [9], coconut leaf [10] and fibres [11], cotton [12] and hemp [13], or cellulose [14]. Plant or cellulose fibres have many advantages, such as wide availability at a relatively low cost, biological renewal, recyclability, biodegradability, harmless nature, and zero carbon footprint [15].…”

Section: Introductionmentioning

confidence: 99%

Wool-Reinforced Cement Based Composites

Jóźwiak–Niedźwiedzka

Fantilli

2020

Materials

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In this paper, an overview of the latest research activities in the field of cement-based composites incorporating sheep wool reinforcement is presented. First, the characteristics of this type of natural fibre are described. Then, the current use of sheep wool fibres in cement-based composites is discussed. The research problems regarding the properties of cement matrix composites reinforced with sheep wool are divided into four groups: thermal and acoustic properties, mechanical behavior, durability issues, and microstructure aspects. The latter two groups are analysed separately, because both durability and microstructure are of particular importance for future applications of wool reinforcement. Finally, the main directions of future researches are presented.

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Durability of chemically modified sisal fibre in cement-based composites

Cited by 69 publications

References 26 publications

Mechanical Properties of Natural Fiber Reinforced Foamed Concrete

Mechanical Properties of Natural Fiber Reinforced Foamed Concrete

[Retracted] Experimental Study of Thermal and Mechanical Behaviour of Graphite‐Filled UJF Composite

Wool-Reinforced Cement Based Composites

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