TY - JOUR
T1 - Use of mixed microbial cultures to protect recycled concrete surfaces
T2 - A preliminary study
AU - Serrano-González, Lorena
AU - Merino-Maldonado, Daniel
AU - Guerra-Romero, Manuel Ignacio
AU - Pozo, Julia María Morán Del
AU - Lemos, Paulo Costa
AU - Pereira, Alice Santos
AU - Faria, Paulina
AU - García-González, Julia
AU - Juan-Valdés, Andrés
N1 - info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04625%2F2020/PT#
info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04378%2F2020/PT#
info:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F01054%2F2014%2FCP1224%2FCT0005/PT#
BIA2017-83526-R
UID/QUI/50006/2020
PY - 2021/11/1
Y1 - 2021/11/1
N2 - One approach to tackle the problems created by the vast amounts of construction and demolition waste (CDW) generated worldwide while at the same time lengthening concrete durability and service life is to foster the use of recycled aggregate (RA) rather than natural aggregate (NA). This article discusses the use of polyhydroxyalkanoates (PHAs)-producing mixed microbial cultures (MMCs) to treat the surface of recycled concrete with a view to increase its resistance to watermediated deterioration. The microorganisms were cultured in a minimal medium using waste pinewood bio-oil as a carbon source. Post-application variations in substrate permeability were determined with the water drop absorption and penetration by water under pressure tests. The significant reduction in water absorption recorded reveals that this bioproduct is a promising surface treatment for recycled concrete.
AB - One approach to tackle the problems created by the vast amounts of construction and demolition waste (CDW) generated worldwide while at the same time lengthening concrete durability and service life is to foster the use of recycled aggregate (RA) rather than natural aggregate (NA). This article discusses the use of polyhydroxyalkanoates (PHAs)-producing mixed microbial cultures (MMCs) to treat the surface of recycled concrete with a view to increase its resistance to watermediated deterioration. The microorganisms were cultured in a minimal medium using waste pinewood bio-oil as a carbon source. Post-application variations in substrate permeability were determined with the water drop absorption and penetration by water under pressure tests. The significant reduction in water absorption recorded reveals that this bioproduct is a promising surface treatment for recycled concrete.
KW - Construction and demolition waste (CDW)
KW - Mixed microbial cultures (MMCs)
KW - Polyhydroxyalkanoates (PHAs)
KW - Recycled concrete
KW - Surface treatment
KW - Waterproof
UR - http://www.scopus.com/inward/record.url?scp=85118563854&partnerID=8YFLogxK
U2 - 10.3390/ma14216545
DO - 10.3390/ma14216545
M3 - Article
C2 - 34772095
AN - SCOPUS:85118563854
SN - 1996-1944
VL - 14
JO - Materials
JF - Materials
IS - 21
M1 - 6545
ER -