Experimental and analytical study on structural performance of reinforced lightweight geopolymer composites panels

Li, Zhixing; Chen, Wensu; Hao, Hong; Xu, Cheng; Pham, Thanh-Hang

doi:10.1016/j.istruc.2023.03.129

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…This is also true in relation to additional special thermal, acoustic, and electromagnetic shielding properties. The analysis is based on the comparison with homolog structural insulation panels based on geopolymer structures available on the market (see, for example, [71][72][73][74][75]), as, generally speaking, structural insulated panels, whatever their technology, are one of the most efficient and sustainable construction materials, both during manufacture and construction and long after.…”

Section: Sustainability Analysis For Structural Insulation Panels Con...mentioning

confidence: 99%

Sustainable Geopolymer Structural Insulation Panels Obtained with the Addition of Power Plant Ash and Furnace Slag with Potential Uses in the Fabrication of Specialized Structures

Ciobanu,

Schreiner,

Caramitu

et al. 2024

Sustainability

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The paper describes the process of obtaining geopolymer composites using raw materials from critical waste, i.e., mixed power plant ash and furnace slag powder. Using such geopolymer composites, structural insulation panels were made in the laboratory, which were subjected to tests specific to construction applications. At the same time, some special properties, such as sound insulation and electromagnetic shielding properties for special applications, were tested. The results obtained from the functional tests led to the conclusion that the panels made of geopolymer composites provided both sound and electromagnetic attenuation values clearly superior to those obtained from autoclaved cellular concrete, brick, or concrete structures, which encourages us to suggest such material concepts for complex shielding purposes. The sustainability of the technology for producing such geopolymer composites was fully demonstrated from the economic, environmental, and social perspectives.

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Section: Sustainability Analysis For Structural Insulation Panels Con...mentioning

confidence: 99%

Sustainable Geopolymer Structural Insulation Panels Obtained with the Addition of Power Plant Ash and Furnace Slag with Potential Uses in the Fabrication of Specialized Structures

Ciobanu,

Schreiner,

Caramitu

et al. 2024

Sustainability

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“…Sound absorption performance can be achieved through various mechanisms, including porous materials for absorbing sound waves, plate vibration for membrane-based absorption, and resonant mechanisms that exploit air cavity resonance in specific frequency bands. [7][8][9][10][11][12] There are now many materials that can be derived from waste and biomass, such as wood, organic fibers of either plant or animal origin. [13][14][15][16][17] These materials can be used as sound-absorbing materials, and they have low environmental impacts and negative health effects.…”

Section: Introductionmentioning

confidence: 99%

Innovative sound absorption technique: Step‐shaped ceramic fiberboards with veneer attachment for walls

Kang,

Choi,

Zhu

et al. 2023

Int J Applied Ceramic Tech

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The subject of the present paper is improving sound absorption properties and protecting the dust generation of ceramic fiber boards. The two‐microphone impedance tube method measured the sound absorption coefficient (SAC) of ceramic fiberboards (CFB) with different shapes and sizes. The wood veneer was used to cover the ceramic fiberboard (VCFB) surface to improve the wall's appearance and prevent dust generation. The step‐shaped ceramic fiberboards with veneer attached (VCFBS) revealed improved SAC (0.98, 2000Hz) compared with CFB and VCFB. The noise reduction coefficient (NRC) and sound absorption average (SAA) showed a 100% improvement compared to CFB. The surface morphology and air permeability were analyzed using a scanning electron microscope and a capillary flow porometer to correlate with the findings. Furthermore, the porosity and pore diameter of the CFB were also studied to gain a comprehensive understanding of its acoustic properties and sound absorption capabilities. Statistical T‐tests revealed significant variations in the SAC (p ≤0.005). Besides, the obtained SAC was compared with other reported sound‐absorbing materials. These findings suggest that using step‐shaped ceramic fiberboard covered with a wood veneer can significantly absorb sound and improve the living environment. This novel approach offers potential advancements in sound‐absorbing materials for building construction.This article is protected by copyright. All rights reserved

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Synthesis of solid sodium silicate from waste glass and utilization on one-part alkali-activated materials based on spent oil filtering earth

Delgado-Plana,

Bueno-Rodríguez,

Pérez-Villarejo

et al. 2024

Environ Sci Pollut Res

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Alkali activated materials (AAMs) commonly known as geopolymers are considered ecofriendly substitutes for Portland cement. However, these materials still have a significant environmental impact, owing mainly to the use of activators based on commercial chemical products. In this sense, this research focuses on the production and use of waste glass–derived activators AAMs as an alternative to commercial activators. Using a thermochemical synthesis method, activator compositions were systematically designed to achieve predefined activator modulus (Ms = SiO2/Na2O = 0.5; 1.0 and 1.5). These alternative activators were studied by XRD, FTIR and SEM techniques. Additionally, one-part AAMs were manufactured using spent oil filtration earth (SOFE) as precursor and activator with optimum modulus Ms = 1.0. The influence of the Na2O dosage was studied (10; 20 and 30 g of Na2O per every 100 g of SOFE) as well as the influence of the activator modulus maintaining the optimum dosage of 20 g Na2O per 100 g of SOFE. As a control, two-part AAMs were also synthetized with the optimum dosage and modulus employing commercial activators (NaOH + Na2SiO3 solution). Results indicate that the modulus of the alternative activator and especially the Na2O dosage have a significant influence on the technological properties of AAMs based in SOFE, with an optimum compressive strength (35.8 MPa) for the addition of 20 g of Na2O per every 100 g of SOFE using activator with modulus Ms = 1.0. This research embodies a sustainable approach to AAM production and suggests waste glass as a valuable raw material for sodium silicate synthesis intended for the one-part activation of spent filtering earth from the agri-food industry, aligning with the principles of circular economy and sustainable development goals.

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Experimental and analytical study on structural performance of reinforced lightweight geopolymer composites panels

Cited by 4 publications

References 24 publications

Sustainable Geopolymer Structural Insulation Panels Obtained with the Addition of Power Plant Ash and Furnace Slag with Potential Uses in the Fabrication of Specialized Structures

Sustainable Geopolymer Structural Insulation Panels Obtained with the Addition of Power Plant Ash and Furnace Slag with Potential Uses in the Fabrication of Specialized Structures

Innovative sound absorption technique: Step‐shaped ceramic fiberboards with veneer attachment for walls

Synthesis of solid sodium silicate from waste glass and utilization on one-part alkali-activated materials based on spent oil filtering earth

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