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Utilization of Bio Ashes in Cement-based Materials: A Case Study in Cooperation with Pulp and Paper and Energy Production Industries in Sweden

Author(s): (Chalmers University of Technology * SE-41296 Göteborg)
(RISE Reserach Institute of Sweden , Box 857, 50115 Borås)
(RISE Research Institute of Sweden , Box 857, 50115 Borås)
(RISE Research Institutes of Sweden , Box 857 SE-501 15 Borås , Sweden)
Medium: journal article
Language(s): English
Published in: Nordic Concrete Research, , n. 2, v. 63
Page(s): 63-78
DOI: 10.2478/ncr-2020-0017
Abstract:

Worldwide increased concern of the CO2 emissions has led to the replacement of coal by biomass in combustion-based power plants. However, this would cause the scarcity of fly ash, one of the most well-known rest products from coal combustion, which is used as supplementary cementitious materials (SCM) in construction sector to reduce the large environmental footprint of cement production. Seeking to find alternative SCMs, this article aims to demonstrate the viability of using bio ashes in Sweden as SCM, which, due to lack of studies validating their value, are landfilled today. According to the obtained results, bio ashes produced at pulp and paper industries have a considerably consistent chemical composition and exhibit a satisfactory pozzolanic behaviour. Nevertheless, according to the conclusions of this study, the pozzolanicity of these alternative binders is not reflected equally with respect to the most known reactivity tests for common SCMs. The results imply that although “R3” tests method infers the pozzolanic characteristics of the bio ashes in focus of this study, the “activity index test” as well as “calcium consumption test” indicate otherwise.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.2478/ncr-2020-0017.
  • About this
    data sheet
  • Reference-ID
    10705831
  • Published on:
    19/02/2023
  • Last updated on:
    19/02/2023
 
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