A Review of Biomass Wood Ash in Alkali-Activated Materials: Treatment, Application, and Outlook
Journal of Composites Science 2024
Yiying Du, Ina Pundiene, Jolanta Pranckeviciene, Modestas Kligys, Giedrius Girskas, Aleksandrs Korjakins

The utilisation of Portland cement has aroused tremendous concerns owing to its production exerting a lot of pressure on the environment. Alternative eco-binders have been developed to replace it, among which alkali-activated materials (AAMs) have drawn great attention, especially due to the possibility of encompassing industrial and agricultural waste, which significantly improves the sustainability and cost-efficiency of the material. Biomass wood ash (BWA) is a by-product generated from power plants and, along with the advocation for biomass fuel as a renewable energy resource, there have been increasing applications of BWA in building and construction materials. This review examines the use of BWA as a precursor source in AAMs. Due to its low chemical and hydraulic reactivity, more active binary precursors are usually introduced to guarantee mechanical properties. Whereas the increment of BWA content can have a negative influence on material strength development, it is still a promising and feasible material, and new approaches should be developed to improve the effectiveness of its utilisation. Currently, study of BWA-based AAMs is still in the beginning stages and more research is needed to investigate the effects of BWA characteristics on the property evolution of AAMs, focusing on the durability and analysis of eco-efficiency. Overall, this review provides a comprehensive overview of the characterisation of BWA and its potential applications in AAMs, and meanwhile, based on the analysis of present research trends, proposes some prospective directions for future research. © 2024 by the authors.


Keywords
alkaline activation; biomass; characterisation; density; eco-efficiency; mechanical properties; microstructure; porosity; water absorption; workability
DOI
10.3390/jcs8050161
Hyperlink
https://www.mdpi.com/2504-477X/8/5/161

Du, Y., Pundiene, I., Pranckeviciene, J., Kligys, M., Girskas, G., Korjakins, A. A Review of Biomass Wood Ash in Alkali-Activated Materials: Treatment, Application, and Outlook. Journal of Composites Science, 2024, Vol. 8, No. 5, Article number 161. e-ISSN 2504-477X. Pieejams: doi:10.3390/jcs8050161

Publication language
English (en)
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