Development and incorporation of lightweight waste-based geopolymer aggregates in mortar and concrete
Yliniemi; Paiva; Tiainen; Illikainen (2016-11-11)
Yliniemi, Paiva, Ferreira, Tiainen, Illikainen, Development and incorporation of lightweight waste-based geopolymer aggregates in mortar and concrete, Construction and Building Materials, Volume 131, 2017, Pages 784-792, ISSN 0950-0618, https://doi.org/10.1016/j.conbuildmat.2016.11.017
© 2016 The Authors. Published by Elsevier Inc. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
https://creativecommons.org/licenses/by-nc-nd/4.0/
https://urn.fi/URN:NBN:fi-fe2019112644278
Tiivistelmä
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.
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