A sustainable production of natural hydraulic lime mortars through bio-amendment

García-González, Julia; Faria, Paulina; Pereira, Alice S.; Lemos, Paulo C.; Juan-Valdés, Andrés

http://hdl.handle.net/10362/145641

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Autores

García-González, Julia

Resumo(s)

This article examined the effect of a bioproduct suspension obtained from fermentation of biodiesel's crude glycerol when used to formulate natural hydraulic lime mortars, as a fluid replacing the mixing water. The bioproduct was used either sonicated or non-sonicated and two volumes of mixing fluid were tested. The aim was to assess the advantages and drawbacks that could be achieved with a waste-based bioproduct, instead of petrochemical-based additions. The investigation revealed a positive effect on workability, producing mortars with a lower mixing fluid content, improving the mechanical performance. Finally, the bioproducts reduced the mortar water absorption by gravity and capillary.

Descrição

This work was financially supported by an STSM grant awarded under COST Action CA15202 (http://www.sarcos.enq.cam.ac.uk), the Spanish Ministry of Economy, Industry and Competitiveness (project BIA2017-83526-R), the Associate Laboratory Institute for Health and Bioeconomy−i4HB (LA/P/0140/2020). Paulo C. Lemos appreciates the support by FCT/MCTES for contract IF/01054/2014/CP1224/CT0005. The authors also acknowledge the experimental assistance of Vitor Silva. Publisher Copyright: © 2022 The Author(s)

Palavras-chave

Biodiesel crude glycerol Bioformulation Microbial mixed cultures Natural hydraulic lime mortar Sustainable mortar Civil and Structural Engineering Building and Construction General Materials Science