Compartir
Título
Use of Bioproducts Derived from Mixed Microbial Cultures Grown with Crude Glycerol to Protect Recycled Concrete Surfaces
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Materials
Número de la revista
8
Cita Bibliográfica
Serrano-González, L.; Merino Maldonado, D.; Guerra Romero, M. I.; Morán Del Pozo, J. M.; Lemos, P. C.; Pereira, A. S.; Faria, P.; García González, J.; Juan Valdés, A. (2021). Use of Bioproducts Derived from Mixed Microbial Cultures Grown with Crude Glycerol to Protect Recycled Concrete Surfaces. Materials, 14(8), https://doi.org/10.3390/MA14082057
Editorial
MDPI
Fecha
2021
Resumen
[EN] The large increase in the world population has resulted in a very large amount of con-
struction waste, as well as a large amount of waste glycerol from transesterification reactions of acyl
glycerides from oils and fats, in particular from the production of biodiesel. Only a limited percentage
of these two residues are recycled, which generates a large management problem worldwide. For that
reason, in this study, we used crude glycerol as a carbon source to cultivate polyhydroxyalkanoates
(PHA)-producing mixed microbial cultures (MMC). Two bioproducts derived from these cultures
were applied on the surface of concrete with recycled aggregate to create a protective layer. To
evaluate the effect of the treatments, tests of water absorption by capillarity and under low pressure
with Karsten tubes were performed. Furthermore, SEM-EDS analysis showed the physical barrier
caused by biotreatments that produced a reduction on capillarity water absorption of up to 20% and
improved the impermeability of recycled concrete against the penetration of water under pressure up
to 2.7 times relative to the reference. Therefore, this bioproduct shown to be a promising treatment to
protect against penetration of water to concrete surfaces increasing its durability and useful life.
Materia
Palabras clave
URI
DOI
Aparece en las colecciones
- Artículos [5086]
Ficheros en el ítem
Tamaño:
3.790
xmlui.dri2xhtml.METS-1.0.size-megabytes
Formato:
Adobe PDF