https://openarchive.icomos.org/id/eprint/2600 2022-03-27T21:43:03Z info:eu-repo/semantics/descriptiveMetadata http://openarchive.icomos.org/id/eprint/2600/ Effect of innovative bioproducts on air lime mortars Oliveira, Alexandre Pereira, Alice S. Lemos, Paulo C. Guerra, João P. Silva, Vitor Faria, Paulina 04. Matériaux de construction 06. Analyse des matériaux 11. Essai de vieillissement artificiel In this work , air lime mortars were bioformulated with two innovative bioproducts, one resulting from iron supplemented Escherichia coli cultures and a second one exploiting microbial mixed cultures grown with crude glycerol as substrate. The bioproducts were lyophilized and, for the mortar formulation, suspended in water and used as mixing liquid. Workability of mortars was evaluated by the flow table consistence and 90-days-old samples were tested for different properties, such as thermal conductivity, bulk density, porosimetry, water absorption, drying, surface hardness and compressive strength. With water content to ensure workability, bioformulated mortars presented higher thermal insulation and reduced water absorption when compared with a non-bioformulated control mortar. However, the presence of bioproducts decreased the compressive strength of the air lime mortar. Contact with water, simulating weathering, diminished that decrease. The strategy utilized in the present work meet so me of the goals of a circular economy approach maximizing natural resources by the use of wastes to produce the bioproducts and increasing lime mortars durability. Elsevier 2021 Article PeerReviewed Oliveira, Alexandre et Pereira, Alice S. et Lemos, Paulo C. et Guerra, João P. et Silva, Vitor et Faria, Paulina (2021) Effect of innovative bioproducts on air lime mortars. Journal of Building Engineering, 35 . p. 101985. ISSN 23527102 [Article] https://doi.org/10.1016/j.jobe.2020.101985 doi:10.1016/j.jobe.2020.101985 doi:10.1016/j.jobe.2020.101985 en info:eu-repo/semantics/humanStartPage