TY - JOUR
T1 - Effect of surface biotreatments on construction materials
AU - García-González, Julia
AU - Pereira, Alice S.
AU - Lemos, Paulo C.
AU - Almeida, Nídia
AU - Silva, Vítor
AU - Candeias, Antonio
AU - Juan-Valdés, Andrés
AU - Faria, Paulina
N1 - info:eu-repo/grantAgreement/FCT/5876/147412/PT#
STSM Grant from the COST Action CA15202.
Spanish Ministry of Economy - project BIA2017-83526-R.
project DB-Heritage – Database of building materials with historical and heritage interest (PTDC/EPH-PAT/4684/2014).
IF/01054/2014/CP1224/CT0005.
FCT/MCTES (UID/QUI/50006/2019; UID/Multi/04378/2019).
POCI-01-0145-FEDER-007728.
Nídia Almeida is supported by the Radiation Biology and Biophysics Doctoral Training Programme (RaBBiT-PD/00193/2012; UCIBIO-UID/Multi/04378/2019 and by a PhD fellowship from FCT/MCTES (PD/BD/106034/2015).
PY - 2020/4/30
Y1 - 2020/4/30
N2 - Surface treatment technology is instrumental to construction material conservation and more specifically to preventing decay and improving durability. Surface treatments help protect and consolidate the built heritage against material damage, reducing repair and replacement costs. This study assessed the effect of two eco-friendly healing agents, one generated by iron-enriched Escherichia coli and the other by mixed microbial cultures that metabolise glycerol, a biodiesel processing by-product, to produce polyhydroxyalkanoates. Healing was monitored by measuring the water drop absorption rate in cement mortar, air lime mortar, ceramic brick, limestone, adobe and compressed earth block. The agents tested lengthened water absorption times in all the materials studied, confirming their efficacy as external repair treatments for construction materials.
AB - Surface treatment technology is instrumental to construction material conservation and more specifically to preventing decay and improving durability. Surface treatments help protect and consolidate the built heritage against material damage, reducing repair and replacement costs. This study assessed the effect of two eco-friendly healing agents, one generated by iron-enriched Escherichia coli and the other by mixed microbial cultures that metabolise glycerol, a biodiesel processing by-product, to produce polyhydroxyalkanoates. Healing was monitored by measuring the water drop absorption rate in cement mortar, air lime mortar, ceramic brick, limestone, adobe and compressed earth block. The agents tested lengthened water absorption times in all the materials studied, confirming their efficacy as external repair treatments for construction materials.
KW - Architectural heritage conservation
KW - Consolidation
KW - Eco-friendly bioproduct
KW - Escherichia coli
KW - Microbial induced precipitation
KW - Mixed microbial culture
KW - Water absorption
UR - http://www.scopus.com/inward/record.url?scp=85078851274&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2020.118019
DO - 10.1016/j.conbuildmat.2020.118019
M3 - Article
AN - SCOPUS:85078851274
SN - 0950-0618
VL - 241
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 118019
ER -