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Abstract

Preliminary Assessment of Biomass Fly Ash as a Partial Aggregate Replacement in a Screed Mortar Formulation †

1
Department of Materials and Ceramic Engineering, CICECO—Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
2
Department of Environment and Planning, CESAM—Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
*
Authors to whom correspondence should be addressed.
Presented at Materiais 2022, Marinha Grande, Portugal, 10–13 April 2022.
Published: 23 May 2022
(This article belongs to the Proceedings of MATERIAIS 2022)
Biomass fly ash (BFA) is an inorganic solid waste produced in biomass-fired power plants. Due to the adopted coal phase-out strategy, the amount of BFA produced worldwide is increasing. Currently, most of the generated BFA is being disposed of in landfills, so more sustainable management practices are being investigated, such as their recycling in construction materials.
In this work, the valorization of two sorts of BFA as an aggregate substitute in a screed mortar formulation was evaluated. The BFAs were characterized (XRF, XRD, SEM, and particle size distribution). The influence of the incorporation amount of BFAs on the workability, mass loss upon curing, bulk density, water sorptivity (by capillary and immersion), and flexural and compressive strength properties of the screed mortar was evaluated.
The results obtained from this preliminary assessment reveal that it is possible to substitute up to 25 wt.% of sand with the two sorts of BFA understudy in the screed mortar formulation, preserving the required properties. This result enables a decrease in primary raw materials consumption, while reducing the amount of BFA disposed of in landfills, a practice with a high economic and environmental impact.

Author Contributions

Conceptualization, M.P.S. and J.A.L.; methodology, M.N.C., M.P.S. and J.A.L.; validation, M.N.C., I.V., L.A.C.T., M.P.S. and J.A.L.; investigation, M.N.C., I.V. and M.P.S.; resources, M.P.S. and J.A.L.; data curation, M.N.C. and I.V.; writing—original draft preparation, M.N.C.; writing—review and editing, M.N.C., I.V., L.A.C.T., M.P.S. and J.A.L.; supervision, M.P.S.; project administration, L.A.C.T., M.P.S. and J.A.L.; funding acquisition, L.A.C.T., M.P.S. and J.A.L. All authors have read and agreed to the published version of the manuscript.

Funding

This work was supported by Portugal 2020 through the European Regional Development Fund (in the frame of Operational Competitiveness and Internationalization Program) in the scope of the project INPACTUS, POCI/01/0247/FEDER/21874 and in the scope of the project CICECO—Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 and LA/P/0006/2020 financed by national funds through the FCT/MEC (PIDDAC). It is acknowledge the financial support to CESAM by the Portuguese Foundation for Science and Technology (FCT)/Ministry of Science, Technology and Higher Education (MCTES) UIDP/50017/2020+UIDB/50017/2020+LA/P/0094/2020, through national funds.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Not applicable.

Data Availability Statement

Not applicable.

Conflicts of Interest

The authors declare no conflict of interest.
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Share and Cite

MDPI and ACS Style

Capela, M.N.; Vieira, I.; Tarelho, L.A.C.; Seabra, M.P.; Labrincha, J.A. Preliminary Assessment of Biomass Fly Ash as a Partial Aggregate Replacement in a Screed Mortar Formulation. Mater. Proc. 2022, 8, 25. https://0-doi-org.brum.beds.ac.uk/10.3390/materproc2022008025

AMA Style

Capela MN, Vieira I, Tarelho LAC, Seabra MP, Labrincha JA. Preliminary Assessment of Biomass Fly Ash as a Partial Aggregate Replacement in a Screed Mortar Formulation. Materials Proceedings. 2022; 8(1):25. https://0-doi-org.brum.beds.ac.uk/10.3390/materproc2022008025

Chicago/Turabian Style

Capela, Marinélia N., Inês Vieira, Luís A. C. Tarelho, Maria P. Seabra, and João A. Labrincha. 2022. "Preliminary Assessment of Biomass Fly Ash as a Partial Aggregate Replacement in a Screed Mortar Formulation" Materials Proceedings 8, no. 1: 25. https://0-doi-org.brum.beds.ac.uk/10.3390/materproc2022008025

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