Eco-friendly approach to enhance the mechanical performance of geopolymer foams: Using glass fibre waste coming from wind blade production
authors Senff, L; Novais, RM; Carvalheiras, J; Labrincha, JA
nationality International
journal CONSTRUCTION AND BUILDING MATERIALS
author keywords Glass fibre; Aluminum powder; Geopolymeric mortar; Thermal conductivity
keywords HARDENED-STATE PROPERTIES; POROUS FLY-ASH; REINFORCED GEOPOLYMER; THERMAL-CONDUCTIVITY; RHEOLOGICAL BEHAVIOR; CEMENT; REMOVAL; CONCRETE; POROSITY; ADSORBENTS
abstract In this study, the possibility of using glass fibre wastes as reinforcement agent of waste-based and low thermal conductivity geopolymer mortars was evaluated to expand on previous work performed on dense geopolymers. The individual and combined influence of the glass fibre and the blowing agent amount on the fresh- and hardened-state properties of geopolymeric mortars was investigated. Results demonstrate that the fibres incorporation effectively enhances the mortars' flexural (up to 23%) and compressive strength (up to 30%) in comparison with the un-reinforced foams. Moreover, the fibres inclusion did not significantly alter the specimens' thermal conductivity, which demonstrates the suitability of the proposed approach. The low thermal conductivity (227 mW/m K) and apparent density (1.00 g/cm(3)) of the mortars' associated with their flexural (1.23 MPa) and compressive strength (2.94 MPa) suggests the use of these innovative materials in non-structural applications. (C) 2019 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0950-0618
year published 2020
volume 239
digital object identifier (doi) 10.1016/j.conbuildmat.2019.117805
web of science category Construction & Building Technology; Engineering, Civil; Materials Science, Multidisciplinary
subject category Construction & Building Technology; Engineering; Materials Science
unique article identifier WOS:000521514300064
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journal analysis (jcr 2019):
journal impact factor 4.419
5 year journal impact factor 5.036
category normalized journal impact factor percentile 83.285
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