Development and incorporation of lightweight waste-based geopolymer aggregates in mortar and concrete
authors Yliniemi; Paiva; Ferreira; Tiainen; Illikainen
nationality International
journal CONSTRUCTION AND BUILDING MATERIALS
author keywords Lightweight aggregates; Rheology; Geopolymers; Mortar; Concrete
keywords COLD BONDING PELLETIZATION; HIGH-PERFORMANCE CONCRETE; FLY-ASH; MANUFACTURE; REACTIVITY
abstract Using industrial side streams as artificial aggregate precursors could increase waste utilization and save natural reserves. In this study, lightweight geopolymer aggregates were manufactured from fluidized bed combustion fly ash and mine tailings using high shear granulation and alkali activation. The results showed that geopolymer aggregates had physical properties comparable to commercial lightweight expanded clay aggregates (LECAs). Mortar and concrete prepared with geopolymer aggregates had higher mechanical strength, a higher dynamic modulus of elasticity, and higher density than concrete produced with LECAs, while the rheology and workability was the same. (C) 2016 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0950-0618
year published 2017
volume 131
beginning page 784
ending page 792
digital object identifier (doi) 10.1016/j.conbuildmat.2016.11.017
web of science category Construction & Building Technology; Engineering, Civil; Materials Science, Multidisciplinary
subject category Construction & Building Technology; Engineering; Materials Science
unique article identifier WOS:000392770300077
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journal impact factor (jcr 2016): 3.169
5 year journal impact factor (jcr 2016): 3.703
category normalized journal impact factor percentile (jcr 2016): 85.647
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