Synthesis, Characterization, and Recyclability of a Functional Jute-Based Geopolymer Composite

Alshaaer, Mazen

doi:10.3389/fbuil.2021.631307

Cited by 10 publications

(5 citation statements)

References 23 publications

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“…Alshaaer worked with the synthesis and recyclability of jute-reinforced geopolymers composites and reported four times higher flexural strength of jute-reinforced geopolymers composites as compared to non-reinforced geopolymers composites. Their results are illustrated in Figure 14 [ 147 ].…”

Section: Geopolymers and Natural Fiber-reinforced Compositesmentioning

confidence: 99%

Geopolymers and Fiber-Reinforced Concrete Composites in Civil Engineering

et al. 2021

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This paper discusses the influence of fiber reinforcement on the properties of geopolymer concrete composites, based on fly ash, ground granulated blast furnace slag and metakaolin. Traditional concrete composites are brittle in nature due to low tensile strength. The inclusion of fibrous material alters brittle behavior of concrete along with a significant improvement in mechanical properties i.e., toughness, strain and flexural strength. Ordinary Portland cement (OPC) is mainly used as a binding agent in concrete composites. However, current environmental awareness promotes the use of alternative binders i.e., geopolymers, to replace OPC because in OPC production, significant quantity of CO2 is released that creates environmental pollution. Geopolymer concrete composites have been characterized using a wide range of analytical tools including scanning electron microscopy (SEM) and elemental detection X-ray spectroscopy (EDX). Insight into the physicochemical behavior of geopolymers, their constituents and reinforcement with natural polymeric fibers for the making of concrete composites has been gained. Focus has been given to the use of sisal, jute, basalt and glass fibers.

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Section: Geopolymers and Natural Fiber-reinforced Compositesmentioning

confidence: 99%

Geopolymers and Fiber-Reinforced Concrete Composites in Civil Engineering

et al. 2021

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“…In this case, it is possible to reflect on the merits of pretreating the fiber by soaking it in water or low-molar alkali, as appropriate, before applying it to the composite, which may improve the continuity of the material. The other research with applying natural fibers in geopolymers confirm that cohesion between fiber and matrix could be improved by using proper pre-treatment [ 25 , 26 ].…”

Section: Resultsmentioning

confidence: 99%

The Influence of Short Coir, Glass and Carbon Fibers on the Properties of Composites with Geopolymer Matrix

Korniejenko¹,

Łach²,

Mikuła³

2021

Materials

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The aim of the article is to analyze the influence of short coir, glass and carbon fiber admixture on the mechanical properties of fly ash-based geopolymer, such as: flexural and compressive strength. Glass fiber and carbon fibers have been chosen due to their high mechanical properties. Natural fibers have been chosen because of their mechanical properties as well as for the sake of comparison between their properties and the properties of the artificial ones. Fourth series of fly ash-based geopolymers for each fiber was cast: 1, 2, and 5% by weight of fly ash and one control series without any fibers. Each series of samples were tested on flexural and compressive strength after 7, 14, and 28 days. Additionally, microstructural analysis was carried out after 28 days. The results have shown an increase in compressive strength for composites with fibers—an improvement in properties between 25.0% and 56.5% depending on the type and amount of fiber added. For bending strength, a clear increase in the strength value is visible for composites with 1 and 2% carbon fibers (62.4% and 115.6%). A slight increase in flexural strength also occurred for 1% addition of glass fiber (4.5%) and 2% addition of coconut fibers (5.4%). For the 2% addition of glass fibers, the flexural strength value did not change compared to the value obtained for the matrix material. For the remaining fiber additions, i.e., 5% glass fiber as well as 1 and 5% coconut fibers, the flexural strength values deteriorated. The results of the research are discussed in a comparative context and the properties of the obtained composites are juxtaposed with the properties of the standard materials used in the construction industry.

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“…While for NFRGC prepared with sisal fibres, the highest flexural strength was obtained with the addition of 3% fibre content. Similarly, Alshaaer (2021) reported that the flexural strength of NFRGC containing jute fibres was four times higher than the strength of the geopolymer matrix without fibres. The ultimate flexural stress of the plain geopolymer was 3 MPa.…”

Section: Compressive Strengthmentioning

confidence: 93%

Mechanical Properties of Natural Fibre Reinforced Geopolymer Composites: A Review

Al-Ghazali¹,

Aziz²,

Abdan³

et al. 2022

JST

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The cement production consumes many natural resources and energy, pollutes the environment, and cannot meet the current building materials’ green and sustainable development requirements. Therefore, geopolymers have gained popularity as cement replacements in recent years. Geopolymers have promising characteristics such as low energy consumption and carbon footprint, valuable compressive strength, fire resistance, flame resistance and good durability. However, these materials suffer from low tensile and flexural strength. Hence, fibres are added to overcome these issues and enhance their toughness index. Natural fibres are biodegradable, low-cost, renewable materials and widely available in many countries. This article reviewed previous Natural Fibre Reinforced Geopolymer Composites (NFRGC) studies, focusing on compressive strength, tensile and flexural strengths, and toughness. In addition, the available literature on the effect of the treatment methods of natural fibres on the mechanical properties of NFRGC has been addressed. The findings indicate that adding the appropriate type and content of natural fibres to geopolymer composites can enhance their mechanical properties. However, more attention should be paid to the effects of the pre-treatment of natural fibres on the performance of NFRGC.

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Synthesis, Characterization, and Recyclability of a Functional Jute-Based Geopolymer Composite

Cited by 10 publications

References 23 publications

Geopolymers and Fiber-Reinforced Concrete Composites in Civil Engineering

Geopolymers and Fiber-Reinforced Concrete Composites in Civil Engineering

The Influence of Short Coir, Glass and Carbon Fibers on the Properties of Composites with Geopolymer Matrix

Mechanical Properties of Natural Fibre Reinforced Geopolymer Composites: A Review

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