University of Oulu

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,

Development and incorporation of lightweight waste-based geopolymer aggregates in mortar and concrete

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Author: Yliniemi1; Paiva2,3; Tiainen4;
Organizations: 1Fiber and Particle Engineering Research Unit, P.O. Box 4300, 90014 University of Oulu, Finland
2Civil Engineering Dept./CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
3Civil Engineering Dept./RISCO, University of Aveiro, 3810-193 Aveiro, Portugal
4Laboratory of Inorganic Chemistry, Center for Molecular Materials, P.O. Box 3000, 90014, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 3.2 MB)
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Language: English
Published: Elsevier, 2017
Publish Date: 2019-11-26


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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Series: Construction & building materials
ISSN: 0950-0618
ISSN-E: 1879-0526
ISSN-L: 0950-0618
Volume: 131
Pages: 784 - 792
DOI: 10.1016/j.conbuildmat.2016.11.017
Type of Publication: A1 Journal article – refereed
Field of Science: 215 Chemical engineering
212 Civil and construction engineering
216 Materials engineering
116 Chemical sciences
Funding: This work was carried out as part of the GEOSULF ERA-MIN Project, which is supported by the Finnish Funding Agency for Technology and Innovation (Tekes), the Portuguese National Funding Agency for Science, Research and Technology (FCT), the National Center for Research and Development (BR), and various companies (Outotec, Agnico Eagle, and First Quantum Minerals). The authors would like to thank the Renlund Foundation for its financial support. Eng. Maria Carlos Figueiredo, Mr. Victor Rodrigues, Mr. Jarno Karvonen, Mrs. Elisa Wirkkala, and Mr. Jani Österlund are acknowledged for their contributions to the laboratory analyses. We also acknowledge the contributions of the personnel of the Center of Microscopy and Nanotechnology to the FESEM analyses.
Copyright information: © 2016 The Authors. Published by Elsevier Inc. This manuscript version is made available under the CC-BY-NC-ND 4.0 license