Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways

[EN] The linear economy paradigm in place to date has to be seriously challenged to give way to a new school of thought known as the circular economy. In this research work, precast kerbs and paving blocks made with recycled concrete (RACC-mixture) bearing 50 wt% mixed recycled aggregate (masonry co...

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Autores: Guerra Romero, Manuel Ignacio, Juan Valdés, Andrés, Rodríguez Robles, Desirée, García Gonzálezz, Julia, Sánchez de Rojas, María Isabel, Martínez García, Rebeca, Morán del Pozo, Julia María
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Ajuntament de Barcelona
Repositorio:BULERIA. Repositorio Institucional de la Universidad de León
OAI Identifier:oai:buleria.unileon.es:10612/20020
Acceso en línea:https://hdl.handle.net/10612/20020
Access Level:acceso abierto
Palabra clave:Ingeniería agrícola
Ingeniería forestal
Recycled Cement
Mixed Recycled Aggregates
Recycled Concrete
Precast Concrete
Footways
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repository_id_str
spelling Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for FootwaysGuerra Romero, Manuel IgnacioJuan Valdés, AndrésRodríguez Robles, DesiréeGarcía Gonzálezz, JuliaSánchez de Rojas, María IsabelMartínez García, RebecaMorán del Pozo, Julia MaríaIngeniería agrícolaIngeniería forestalRecycled CementMixed Recycled AggregatesRecycled ConcretePrecast ConcreteFootways[EN] The linear economy paradigm in place to date has to be seriously challenged to give way to a new school of thought known as the circular economy. In this research work, precast kerbs and paving blocks made with recycled concrete (RACC-mixture) bearing 50 wt% mixed recycled aggregate (masonry content of 33%) and an eco-efficient cementitious material as 25 wt% conventional binder replacement were evaluated to assess their intrinsic potential to replace traditional raw materials, in keeping with circular economy criteria. Therefore, precast products were subjected to mechanical strength, durability and microstructure tests and were compared to conventional concrete units (CC-mixture and commercially available precast elements). Although a class demotion was observed for water absorption and some decreases in flexural strength (26%), splitting tensile strength (12.8%) and electrical resistivity (45%) and a lower class water absorption were registered, and the recycled mixture also exhibited a greater performance in terms of compressive strength (6%), a better abrasion resistance classification and a comparable porosity and microstructure, which ensures a good concrete durability. In any case, the results showed that precast pieces were European standard-compliant, thus supporting the viability of the mixed recycled aggregates and eco-efficient cementitious replacement in footways.MDPIIngenieria AgroforestalEscuela de Ingeniería Agraria y Forestal2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttps://hdl.handle.net/10612/20020reponame:BULERIA. Repositorio Institucional de la Universidad de Leóninstname:Ajuntament de BarcelonaIngléshttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:buleria.unileon.es:10612/200202026-06-24T12:43:27Z
dc.title.none.fl_str_mv Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways
title Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways
spellingShingle Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways
Guerra Romero, Manuel Ignacio
Ingeniería agrícola
Ingeniería forestal
Recycled Cement
Mixed Recycled Aggregates
Recycled Concrete
Precast Concrete
Footways
title_short Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways
title_full Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways
title_fullStr Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways
title_full_unstemmed Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways
title_sort Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways
dc.creator.none.fl_str_mv Guerra Romero, Manuel Ignacio
Juan Valdés, Andrés
Rodríguez Robles, Desirée
García Gonzálezz, Julia
Sánchez de Rojas, María Isabel
Martínez García, Rebeca
Morán del Pozo, Julia María
author Guerra Romero, Manuel Ignacio
author_facet Guerra Romero, Manuel Ignacio
Juan Valdés, Andrés
Rodríguez Robles, Desirée
García Gonzálezz, Julia
Sánchez de Rojas, María Isabel
Martínez García, Rebeca
Morán del Pozo, Julia María
author_role author
author2 Juan Valdés, Andrés
Rodríguez Robles, Desirée
García Gonzálezz, Julia
Sánchez de Rojas, María Isabel
Martínez García, Rebeca
Morán del Pozo, Julia María
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ingenieria Agroforestal
Escuela de Ingeniería Agraria y Forestal
dc.subject.none.fl_str_mv Ingeniería agrícola
Ingeniería forestal
Recycled Cement
Mixed Recycled Aggregates
Recycled Concrete
Precast Concrete
Footways
topic Ingeniería agrícola
Ingeniería forestal
Recycled Cement
Mixed Recycled Aggregates
Recycled Concrete
Precast Concrete
Footways
description [EN] The linear economy paradigm in place to date has to be seriously challenged to give way to a new school of thought known as the circular economy. In this research work, precast kerbs and paving blocks made with recycled concrete (RACC-mixture) bearing 50 wt% mixed recycled aggregate (masonry content of 33%) and an eco-efficient cementitious material as 25 wt% conventional binder replacement were evaluated to assess their intrinsic potential to replace traditional raw materials, in keeping with circular economy criteria. Therefore, precast products were subjected to mechanical strength, durability and microstructure tests and were compared to conventional concrete units (CC-mixture and commercially available precast elements). Although a class demotion was observed for water absorption and some decreases in flexural strength (26%), splitting tensile strength (12.8%) and electrical resistivity (45%) and a lower class water absorption were registered, and the recycled mixture also exhibited a greater performance in terms of compressive strength (6%), a better abrasion resistance classification and a comparable porosity and microstructure, which ensures a good concrete durability. In any case, the results showed that precast pieces were European standard-compliant, thus supporting the viability of the mixed recycled aggregates and eco-efficient cementitious replacement in footways.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/10612/20020
url https://hdl.handle.net/10612/20020
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:BULERIA. Repositorio Institucional de la Universidad de León
instname:Ajuntament de Barcelona
instname_str Ajuntament de Barcelona
reponame_str BULERIA. Repositorio Institucional de la Universidad de León
collection BULERIA. Repositorio Institucional de la Universidad de León
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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