RT info:eu-repo/semantics/article
T1 Use of Bioproducts Derived from Mixed Microbial Cultures Grown with Crude Glycerol to Protect Recycled Concrete Surfaces
A1 Serrano-González, Lorena
A1 Merino Maldonado, Daniel
A1 Guerra Romero, Manuel Ignacio
A1 Morán del Pozo, Julia María
A1 Lemos, Paulo Costa
A1 Pereira, Alice Santos
A1 Faria, Paulina
A1 García González, Julia
A1 Juan Valdés, Andrés
A2 Algebra
K1 Ingeniería agrícola
K1 Ingeniería forestal
K1 Construction And Demolition Waste (cdw)
K1 Glycerol
K1 Recycled Concrete
K1 Surface Treatment
K1 Pha-producing Mmc
K1 Waterproof
AB [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 acylglycerides from oils and fats, in particular from the production of biodiesel. Only a limited percentageof these two residues are recycled, which generates a large management problem worldwide. For thatreason, 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 cultureswere applied on the surface of concrete with recycled aggregate to create a protective layer. Toevaluate the effect of the treatments, tests of water absorption by capillarity and under low pressurewith Karsten tubes were performed. Furthermore, SEM-EDS analysis showed the physical barriercaused by biotreatments that produced a reduction on capillarity water absorption of up to 20% andimproved the impermeability of recycled concrete against the penetration of water under pressure upto 2.7 times relative to the reference. Therefore, this bioproduct shown to be a promising treatment toprotect against penetration of water to concrete surfaces increasing its durability and useful life.
PB MDPI
LK https://hdl.handle.net/10612/19813
UL https://hdl.handle.net/10612/19813
NO 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
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 03-jun-2024