RT Journal Article
SR 00
ID doi:10.1016/j.jobe.2020.101985
A1 Oliveira, Alexandre
A1 Pereira, Alice S.
A1 Lemos, Paulo C.
A1 Guerra, João P.
A1 Silva, Vitor
A1 Faria, Paulina
T1 Effect of innovative bioproducts on air lime mortars
JF Journal of Building Engineering
YR 2021
FD 2021
VO 35
SP 101985
K1 Air lime mortars
K1 Bioformulation
K1 Crude-glycerol based microbial ixed cultures bioproduct
K1 Durability
K1 Escgerichia coli-based bioproduct
K1 Sustainability
K1 lime mortars
K1 mortars
AB 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.
PB Elsevier
SN 23527102
LK http://openarchive.icomos.org/id/eprint/2600/
UL https://doi.org/10.1016/j.jobe.2020.101985