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Effect of innovative bioproducts on air lime mortars
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Oliveira, Alexandre, Pereira, Alice S., Lemos, Paulo C., Guerra, João P., Silva, Vitor and Faria, Paulina (2021) Effect of innovative bioproducts on air lime mortars. Journal of Building Engineering, 35 . p. 101985. ISSN 23527102 [Article]
Full text not available from this repository.Abstract (in English)
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.
| Item Type: | Article |
|---|---|
| Authors: | Authors Email Oliveira, Alexandre UNSPECIFIED Pereira, Alice S. UNSPECIFIED Lemos, Paulo C. UNSPECIFIED Guerra, João P. UNSPECIFIED Silva, Vitor UNSPECIFIED Faria, Paulina paulina.faria@fct.unl.pt |
| Languages: | English |
| Keywords: | Air lime mortars; Bioformulation; Crude-glycerol based microbial ixed cultures bioproduct; Durability; Escgerichia coli-based bioproduct; Sustainability; lime mortars; mortars |
| Subjects: | C. ARCHITECTURE > 04. Building materials F. SCIENTIFIC TECHNIQUES AND METHODOLOGIES OF CONSERVATION > 06. Analysis of materials F. SCIENTIFIC TECHNIQUES AND METHODOLOGIES OF CONSERVATION > 11. Artificial ageing tests |
| Volume: | 35 |
| ISSN: | 23527102 |
| Depositing User: | Prof. Paulina Faria |
| Date Deposited: | 27 Mar 2022 21:43 |
| Last Modified: | 27 Mar 2022 21:43 |
| URI: | https://openarchive.icomos.org/id/eprint/2600 |
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