POROUS FLY ASH-BASED GEOPOLYMER USABLE AS AN UNCONVENTIONAL CONSTRUCTION MATERIAL

Geopolymer foam with thermal insulation properties was made by foaming the alumino-silicate mixture composed of fly ash and clay brick waste activated with alkaline activator (water glass and sodium hydroxide in aqueous solution). Other mixture components were expanded perlite as siliceous additive,...

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Published in:Journal of engineering studies and research 2023-07, Vol.29 (3), p.57-65
Main Authors: Paunescu, Bogdan-Valentin, Paunescu, Lucian, Volceanov, Eniko
Format: Article
Language:English
Subjects:
Activated clay
Aluminosilicates
Aluminum silicates
Aqueous solutions
Carbon dioxide
Caustic soda
Cement
Coal
Compressive strength
Concrete mixing
Construction materials
Fly ash
Geopolymers
Heat conductivity
Insulation
Mixtures
Olive oil
Perlite
Polymerization
Raw materials
Sodium
Sodium hydroxide
Surfactants
Temperature
Thermal conductivity
Thermal insulation
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creator Paunescu, Bogdan-Valentin
Paunescu, Lucian
Volceanov, Eniko
description Geopolymer foam with thermal insulation properties was made by foaming the alumino-silicate mixture composed of fly ash and clay brick waste activated with alkaline activator (water glass and sodium hydroxide in aqueous solution). Other mixture components were expanded perlite as siliceous additive, usual fine aggregate (quartz sand), and less frequently used surfactant (olive oil). The main characteristics of the geopolymer foam were: low density, low thermal conductivity, and relatively high compressive strength. The residual materials contributed to low costs and the complete replacement of ordinary cement led to the significant reduction of CO2 emissions.
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subjects Activated clay
Aluminosilicates
Aluminum silicates
Aqueous solutions
Carbon dioxide
Caustic soda
Cement
Coal
Compressive strength
Concrete mixing
Construction materials
Fly ash
Geopolymers
Heat conductivity
Insulation
Mixtures
Olive oil
Perlite
Polymerization
Raw materials
Sodium
Sodium hydroxide
Surfactants
Temperature
Thermal conductivity
Thermal insulation
title POROUS FLY ASH-BASED GEOPOLYMER USABLE AS AN UNCONVENTIONAL CONSTRUCTION MATERIAL
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