Microstructure and mechanical performance of bamboo fiber reinforced mill-scale—Fly-ash based geopolymer mortars

Libre, Roneh Glenn D.; Leaño, Julius L.; Muñoz, Luis Felipe Lopez; Cacanando, Carlo Joseph D.; Promentilla, Michael Angelo B.; Ongpeng, Jason Maximino C.

doi:10.1016/j.clce.2023.100110

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…In the zone from 400 to 900 cm −1 , small peaks are evident that confirm the formation of a geopolymer network between Si and Al, linked by oxygen bridges due to hydration processes. A band at 1021 cm −1 is related to the partial replacement of silicon by aluminum due to the composition of the steel slag and its addition to the mixture (80% by weight) [31]. The peak with the lowest intensity is related to the formation of the weak Al-O bond due to the dissolution of the precursor during geopolymerization and its subsequent reincorporation into the network, modifying the chemical environment of the bond.…”

Section: Resultsmentioning

confidence: 99%

Geopolymers Based on a Mixture of Steel Slag and Fly Ash, Activated with Rice Husks and Reinforced with Guadua angustifolia Fibers

2023

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At present, the conservation of the environment represents an objective that everyone wants to achieve. The construction industry has influenced the advancement of alternative materials that comply with sustainable development. In this article, reinforced concrete was obtained by mixing 80% blast furnace slag and 20% fly ash. These concentrations were chosen because they provide the lowest porosity in the cementitious matrix. Rice husk ash was used as an activator. Guadua angustifolia fibers were used to evaluate the mechanical performance of the concrete. The composition of the raw material was determined by X-ray fluorescence, the microstructure of the fibers by AFM, and the SEM technique was used to determine the surface characteristics of guadua fibers and concrete mixes. The structural characterization using XRD, the structure of the molecules of the guadua fiber, and the composition of the mixture’s molecular mixtures were determined by FTIR spectroscopy. Its properties, such as tensile strength and flexural strength, were analyzed. The results indicated that the concrete with the addition of Guadua angustifolia fibers. The results indicated that the concrete with the addition of guadua angustifolia fibers showed the best mechanical behavior. Tensile strength was optimized, establishing values of 2.68 MPa for unreinforced concrete and up to 3.12 MPa for fiber-reinforced concrete. The flexural strength values increase at ages after 28 days due to the pozzolanic reaction generated. Values of 2.8 MPa were obtained for concrete without fiber and 3.5 MPa for concrete reinforced with guadua angustifolia fiber.

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Section: Resultsmentioning

confidence: 99%

Geopolymers Based on a Mixture of Steel Slag and Fly Ash, Activated with Rice Husks and Reinforced with Guadua angustifolia Fibers

2023

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“…Nevertheless, a chemical or thermal pretreatment can largely reduce these drawbacks. One of the possible sources of natural fibers is grass plants and reeds in particular [32,33].…”

Section: Introductionmentioning

confidence: 99%

Geopolymeric Composites Containing Industrial Waste Reinforced with Arundo donax Fibers

Manzi,

Molari,

Bignozzi

et al. 2024

Buildings

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Traditional Portland cement-based composites have a great environmental impact. Alkali-activated binders can offer an alternative, particularly if they can be obtained even partially from waste. Two residuals derived from the finishing steps of the traditional ceramic industry have been used as possible polymerizable sources mixed with metakaolin. Moreover, to contrast the low dimensional stability of alkali-activated materials and their mechanical brittleness, natural fibers derived from the Arundo donax plant have been added to the mortars. The use of renewable natural fibers instead of synthetic ones can contribute a further environmental advantage. The fresh (consistency) and cured (mechanical) properties of composite materials prepared with residuals and metakaolin were analyzed here. For comparison’s sake, a reference set of composite materials not loaded with fibers but with an identical binder/sand and liquid/binder ratio was cast. A room-temperature curing condition was selected that, although inadequate to promote the short-time reactivity of the wastes, has a minimal energy requirement and allows on-site applications. A small-scale decrease in the properties in the compression mode tests was observed in the waste-modified mortars, while the Arundo addition improved their flexural strength and dimensional stability.

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Synergistic effect and reinforcement mechanism of porous inorganic polymers via the fiber addition and carbonation curing

Zhang,

Du,

Tang

et al. 2024

Journal of Building Engineering

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Microstructure and mechanical performance of bamboo fiber reinforced mill-scale—Fly-ash based geopolymer mortars

Cited by 6 publications

References 29 publications

Geopolymers Based on a Mixture of Steel Slag and Fly Ash, Activated with Rice Husks and Reinforced with Guadua angustifolia Fibers

Geopolymers Based on a Mixture of Steel Slag and Fly Ash, Activated with Rice Husks and Reinforced with Guadua angustifolia Fibers

Geopolymeric Composites Containing Industrial Waste Reinforced with Arundo donax Fibers

Synergistic effect and reinforcement mechanism of porous inorganic polymers via the fiber addition and carbonation curing

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