Use of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study

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 disc...

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Autores principales:	Lorena Serrano-González, Daniel Merino-Maldonado, Manuel Ignacio Guerra-Romero, Julia María Morán-Del Pozo, Paulo Costa Lemos, Alice Santos Pereira, Paulina Faria, Julia García-González, Andrés Juan-Valdés
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	construction and demolition waste (CDW) recycled concrete surface treatment polyhydroxyalkanoates (PHAs) mixed microbial cultures (MMCs) waterproof Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/5dabdf801fff4ce282d74e78714ee2cd
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spelling	oai:doaj.org-article:5dabdf801fff4ce282d74e78714ee2cd2021-11-11T18:07:22ZUse of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study10.3390/ma142165451996-1944https://doaj.org/article/5dabdf801fff4ce282d74e78714ee2cd2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6545https://doaj.org/toc/1996-1944One 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 water-mediated 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.Lorena Serrano-GonzálezDaniel Merino-MaldonadoManuel Ignacio Guerra-RomeroJulia María Morán-Del PozoPaulo Costa LemosAlice Santos PereiraPaulina FariaJulia García-GonzálezAndrés Juan-ValdésMDPI AGarticleconstruction and demolition waste (CDW)recycled concretesurface treatmentpolyhydroxyalkanoates (PHAs)mixed microbial cultures (MMCs)waterproofTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6545, p 6545 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	construction and demolition waste (CDW) recycled concrete surface treatment polyhydroxyalkanoates (PHAs) mixed microbial cultures (MMCs) waterproof Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	construction and demolition waste (CDW) recycled concrete surface treatment polyhydroxyalkanoates (PHAs) mixed microbial cultures (MMCs) waterproof Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Lorena Serrano-González Daniel Merino-Maldonado Manuel Ignacio Guerra-Romero Julia María Morán-Del Pozo Paulo Costa Lemos Alice Santos Pereira Paulina Faria Julia García-González Andrés Juan-Valdés Use of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study
description	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 water-mediated 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.
format	article
author	Lorena Serrano-González Daniel Merino-Maldonado Manuel Ignacio Guerra-Romero Julia María Morán-Del Pozo Paulo Costa Lemos Alice Santos Pereira Paulina Faria Julia García-González Andrés Juan-Valdés
author_facet	Lorena Serrano-González Daniel Merino-Maldonado Manuel Ignacio Guerra-Romero Julia María Morán-Del Pozo Paulo Costa Lemos Alice Santos Pereira Paulina Faria Julia García-González Andrés Juan-Valdés
author_sort	Lorena Serrano-González
title	Use of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study
title_short	Use of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study
title_full	Use of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study
title_fullStr	Use of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study
title_full_unstemmed	Use of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study
title_sort	use of mixed microbial cultures to protect recycled concrete surfaces: a preliminary study
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5dabdf801fff4ce282d74e78714ee2cd
work_keys_str_mv	AT lorenaserranogonzalez useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy AT danielmerinomaldonado useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy AT manuelignacioguerraromero useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy AT juliamariamorandelpozo useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy AT paulocostalemos useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy AT alicesantospereira useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy AT paulinafaria useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy AT juliagarciagonzalez useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy AT andresjuanvaldes useofmixedmicrobialculturestoprotectrecycledconcretesurfacesapreliminarystudy
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Use of Mixed Microbial Cultures to Protect Recycled Concrete Surfaces: A Preliminary Study

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