Mechanical properties of cotton fabric reinforced geopolymer composites at 200–1000 °C

Alomayri, Thamer; Vickers, Les; Shaikh, Faiz Uddin Ahmed; Low, It-Meng

doi:10.1007/s40145-014-0109-x

Cited by 43 publications

(20 citation statements)

References 51 publications

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“…Numerous studies have highlighted the importance of various bio-fillers (majorly from agro-products) and their environmental advantages which include reduced consumption of nonrenewable materials and lowering of greenhouse gas emissions which in turn reduce environmental pollution 7 – 10 . Natural fibers like bamboo 11 , jute 12 , oil palm 13 , cotton 14 , and sisal 15 amongst others are ligno-cellulose based materials which are environmentally friendly substitutes over the synthetic (Kevlar, glass and carbon) fibers being used in time past 16 , 17 . Other attractive properties of natural fibers are good toughness, renewability, biodegradability, cost effectiveness, good specific strength, light weight, availability, non-toxic in nature, and the tools used in processing them are not abraded 18 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Experimental evaluation of bamboo fiber/particulate coconut shell hybrid PVC composite

Adediran

Akinwande

Balogun

et al. 2021

Sci Rep

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Bamboo fibers (BF) treated in 1.3 Molar NaOH and particulate coconut shell (PCS) sieved to − 45 µm were incorporated into polyvinyl chloride (PVC) matrix towards improving the properties of PVC composite for ceiling boards and insulating pipes which sags and degrade with time needing improvement in properties. The process was carried out via compression moulding applying 0.2 kPa pressure and carried out at a temperature of 170 °C. Composites developed were grouped according to their composition. Groups A, B, C, and D were infused with 2, 4, 6 and 8 wt% PCS at constant amount, respectively. Each group was intermixed with a varying proportions of BF (0–30 wt% at 5% interval). Tests carried out on the samples produced revealed that the yield strength, modulus of elasticity, flexural strength, modulus of rupture were enhanced with increasing BF proportion from 0 to 30 wt% BF at 2 wt% constant PCS input. Thermal and electrical properties trended downward as the fiber content reduced even as the hardness was enhanced with PCS/BF intermix which was also reflected in the wear loss index. Impact strength was highest on the infix of 4 wt% PCS and 15 wt% BF. Compressive strength was better boasted with increasing fiber and PCS amount but 8 wt% PCS amounted to depreciation in trend. It was generally observed that PCS performed optimally at 2 wt% incorporation while beyond that resulted in lowering of strength. Blending of the two variable inputs; 0–30 wt% BF and 2 wt% PCS presented better enhancement in properties.

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Section: Introductionmentioning

confidence: 99%

Experimental evaluation of bamboo fiber/particulate coconut shell hybrid PVC composite

Adediran

Akinwande

Balogun

et al. 2021

Sci Rep

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“…Compared with cement-based materials, geopolymer materials have better durability than cement-based materials. Alomayri et al [ 91 ] tested a geopolymer composite material containing 0.83% wt% cotton fabric by exposing it to high temperatures of 200 °C, 400 °C, 600 °C, 800 °C and 1000 °C. As the temperature increased, the compressive strength, flexural strength and fracture toughness of geopolymers all decreased.…”

Section: Research Status Of the Durability Of Cfgcsmentioning

confidence: 99%

Durability of Cellulosic-Fiber-Reinforced Geopolymers: A Review

Liu

2022

Molecules

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Geopolymers have high early strength, fast hardening speed and wide sources of raw materials, and have good durability properties such as high temperature resistance and corrosion resistance. On the other hand, there are abundant sources of plant or cellulose fibers, and it has the advantages of having a low cost, a light weight, strong adhesion and biodegradability. In this context, the geopolymer sector is considering cellulose fibers as a sustainable reinforcement for developing composites. Cellulosic-fiber-reinforced geopolymer composites have broad development prospects. This paper presents a review of the literature research on the durability of cellulosic-fiber-reinforced geopolymer composites in recent years. In this paper, the typical properties of cellulose fibers are summarized, and the polymerization mechanism of geopolymers is briefly discussed. The factors influencing the durability of cellulosic-fiber-reinforced geopolymer composites were summarized and analyzed, including the degradation of fibers in a geopolymer matrix, the toughness of fiber against matrix cracking, the acid resistance, and resistance to chloride ion penetration, high temperature resistance, etc. Finally, the influence of nanomaterials on the properties of geopolymer composites and the chemical modification of fibers are analyzed, and the research on cellulosic-fiber-reinforced geopolymer composites is summarized.

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“…In recent years, the development of geopolymers used as formaldehyde-free adhesives has shown extraordinary potential to produce wood-based composites (Sarmin et al 2014;Shalbafan et al 2016;Bahrami et al 2019). However, recent investigations into the application of geopolymers in the wood adhesive industry (Gouny et al 2012;Shalbafan et al 2016Shalbafan et al , 2017 determined that their bonding capacity is insufficient for gluing wood; primarily due to the geopolymer network's extreme brittleness and low interfacial compatibility (Alomayri et al 2015;Sá Ribeiro et al 2016). Furthermore, because the raw wood material inherently dry shrinks and swells in response to hot and humid conditions, peeling or even cracking between the wood unit and the artificial board's adhesive is likely, which seriously impacts the product's performance and appearance.…”

Section: Introductionmentioning

confidence: 99%

Modified geopolymer-based wood adhesive using waterborne polyurethane

Pan

Wang

et al. 2020

BioRes

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Geopolymer binders show great potential in the application of eco-friendly wood composite adhesives. The applicability of organic-inorganic hybrid-reinforced geopolymer composites as plywood binder was investigated. In this study, a geopolymer-based wood adhesive was fabricated by mixing a matrix-geopolymeric slurry; a toughening agent, waterborne polyurethane; and a silane coupling agent, that served as the covalent “bridge” between the waterborne polyurethane with a geopolymer matrix. The results showed that the waterborne polyurethane exhibited excellent compatibility with the geopolymer and served as a flexibilizer, which transformed the matrix from a microfractured structure to a denser morphology. Moreover, the shear strength of bonded plywood and the morphology of the fracture surface after the tensile measurement were measured. The resulting geopolymer/wood interface was well bonded, and the interfacial bonding strength was higher than the wood strength matrix after modification. The introduction of waterborne polyurethane and silane coupling agent improved the water resistance of the composites and increased the wet shear strength of plywood from 0 MPa to 0.35 MPa. Notably, a weak wood/alkali interface was formed under alkaline conditions due to the strong diffusion of alkali metal ions between the interfaces.

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Mechanical properties of cotton fabric reinforced geopolymer composites at 200–1000 °C

Cited by 43 publications

References 51 publications

Experimental evaluation of bamboo fiber/particulate coconut shell hybrid PVC composite

Experimental evaluation of bamboo fiber/particulate coconut shell hybrid PVC composite

Durability of Cellulosic-Fiber-Reinforced Geopolymers: A Review

Modified geopolymer-based wood adhesive using waterborne polyurethane

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