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

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

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Abstract

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.

Original languageEnglish
Article number127812
Number of pages10
JournalConstruction and Building Materials
Volume340
DOIs
Publication statusPublished - 18 Jul 2022

Keywords

  • Biodiesel crude glycerol
  • Bioformulation
  • Microbial mixed cultures
  • Natural hydraulic lime mortar
  • Sustainable mortar

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