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...
| Autores: | , , , , , , |
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| 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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oai:buleria.unileon.es:10612/20020 |
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ES |
| network_name_str |
España |
| spelling |
Recycled Precast Concrete Kerbs and Paving Blocks, a Technically Viable Option for Footways 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 Ingeniería agrícola Ingeniería forestal Recycled Cement Mixed Recycled Aggregates Recycled Concrete Precast Concrete 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 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. MDPI https://hdl.handle.net/10612/20020 |
| 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 |
| 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 |
| topic |
Ingeniería agrícola Ingeniería forestal Recycled Cement Mixed Recycled Aggregates Recycled Concrete Precast Concrete Footways |
| topic_facet |
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 |
| format |
article |
| status_str |
publishedVersion |
| url |
https://hdl.handle.net/10612/20020 |
| eu_rights_str_mv |
openAccess |
| publisher |
MDPI |
| institution |
Ajuntament de Barcelona |
| collection |
BULERIA. Repositorio Institucional de la Universidad de León |
| reponame_str |
BULERIA. Repositorio Institucional de la Universidad de León |
| instname_str |
Ajuntament de Barcelona |
| _version_ |
1878440906487496704 |
| publishDateSort |
2021 |
| author_browse |
García Gonzálezz, Julia Guerra Romero, Manuel Ignacio Juan Valdés, Andrés Martínez García, Rebeca Morán del Pozo, Julia María Rodríguez Robles, Desirée Sánchez de Rojas, María Isabel |
| publisherStr |
MDPI |
| score |
6,9303427 |