Porous biomass fly ash-based geopolymers with tailored thermal conductivity
authors Novais, RM; Buruberri, LH; Ascensao, G; Seabra, MP; Labrincha, JA
nationality International
journal JOURNAL OF CLEANER PRODUCTION
author keywords Geopolymers; Biomass fly ash; Lightweight; Thermal conductivity; Porosity
keywords METAKAOLIN-BASED GEOPOLYMERS; RED MUD; CHEMICAL-COMPOSITION; ENERGY-CONSUMPTION; SODIUM-HYDROXIDE; CO2 EMISSIONS; COST-ANALYSIS; PART 1.; MICROSTRUCTURE; WASTE
abstract In this work novel, porous biomass fly ash-based-geopolymers were produced by using hydrogen peroxide as pore forming agent. This innovative material can help to mitigate the energy losses inside buildings, while simultaneously reducing the volume of generated wastes, thus contributing towards sustainable construction. Results demonstrate that the content of hydrogen peroxide controls the geopolymer physical properties such as porosity, mechanical resistance and thermal conductivity. The latter allows the production of geopolymers displaying suitable properties for thermal insulation applications. Geopolymers exhibiting thermal conductivity as low as 0.107 W/m K and a density of 560 kg/m(3) were produced, showing the potential of these materials in applications requiring lightweight and low thermal conductivity materials. Besides this material is produced using a simple and cost effective approach, promoting waste valorization by reuse of biomass fly ash, which further demonstrates its potential. (C) 2016 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0959-6526
year published 2016
volume 119
beginning page 99
ending page 107
digital object identifier (doi) 10.1016/j.jclepro.2016.01.083
web of science category GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY; Engineering, Environmental; Environmental Sciences
subject category Science & Technology - Other Topics; Engineering; Environmental Sciences & Ecology
unique article identifier WOS:000372690100011
  ciceco authors
  impact metrics
times cited (wos core): 13
journal impact factor (jcr 2016): 5.715
5 year journal impact factor (jcr 2016): 6.207
category normalized journal impact factor percentile (jcr 2016): 89.018
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