Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast Elements
This research studied the effect of accelerated carbonation in the physical, mechanical and chemical properties of a non-structural vibro-compacted porous concrete made with natural aggregates and two types of recycled aggregates from construction and demolition waste (CDW). Natural aggregates were...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/8/2995 |
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| author | Antonio Manuel Merino-Lechuga Ágata González-Caro Enrique Fernández-Ledesma José Ramón Jiménez José María Fernández-Rodríguez David Suescum-Morales |
| author_facet | Antonio Manuel Merino-Lechuga Ágata González-Caro Enrique Fernández-Ledesma José Ramón Jiménez José María Fernández-Rodríguez David Suescum-Morales |
| author_sort | Antonio Manuel Merino-Lechuga |
| collection | DOAJ |
| description | This research studied the effect of accelerated carbonation in the physical, mechanical and chemical properties of a non-structural vibro-compacted porous concrete made with natural aggregates and two types of recycled aggregates from construction and demolition waste (CDW). Natural aggregates were replaced by recycled aggregates using a volumetric substitution method and the CO<sub>2</sub> capture capacity was also calculated. Two hardening environments were used: a carbonation chamber with 5% CO<sub>2</sub> and a normal climatic chamber with atmospheric CO<sub>2</sub> concentration. The effect of curing times of 1, 3, 7, 14 and 28 days on concrete properties was also analysed. The accelerated carbonation increased the dry bulk density, decreased the accessible porosity water, improved the compressive strength and decreased the setting time to reach a higher mechanical strength. The maximum CO<sub>2</sub> capture ratio was achieved with the use of recycled concrete aggregate (52.52 kg/t). Accelerate carbonation conditions led to an increase in carbon capture of 525% compared to curing under atmospheric conditions. Accelerated carbonation of cement-based products containing recycled aggregates from construction and demolition waste is a promising technology for CO<sub>2</sub> capture and utilisation and a way to mitigate the effects of climate change, as well as promote the new circular economy paradigm. |
| first_indexed | 2024-03-11T04:49:30Z |
| format | Article |
| id | doaj.art-dd2505da8bee4413aa47c421516116f3 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T04:49:30Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-dd2505da8bee4413aa47c421516116f32023-11-17T20:11:33ZengMDPI AGMaterials1996-19442023-04-01168299510.3390/ma16082995Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast ElementsAntonio Manuel Merino-Lechuga0Ágata González-Caro1Enrique Fernández-Ledesma2José Ramón Jiménez3José María Fernández-Rodríguez4David Suescum-Morales5Área de Ingeniería de la Construcción, E.P.S de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainÁrea de Química Inorgánica, E.P.S de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainÁrea de Ingeniería de la Construcción, E.P.S de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainÁrea de Ingeniería de la Construcción, E.P.S de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainÁrea de Química Inorgánica, E.P.S de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainÁrea de Ingeniería de la Construcción, E.P.S de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainThis research studied the effect of accelerated carbonation in the physical, mechanical and chemical properties of a non-structural vibro-compacted porous concrete made with natural aggregates and two types of recycled aggregates from construction and demolition waste (CDW). Natural aggregates were replaced by recycled aggregates using a volumetric substitution method and the CO<sub>2</sub> capture capacity was also calculated. Two hardening environments were used: a carbonation chamber with 5% CO<sub>2</sub> and a normal climatic chamber with atmospheric CO<sub>2</sub> concentration. The effect of curing times of 1, 3, 7, 14 and 28 days on concrete properties was also analysed. The accelerated carbonation increased the dry bulk density, decreased the accessible porosity water, improved the compressive strength and decreased the setting time to reach a higher mechanical strength. The maximum CO<sub>2</sub> capture ratio was achieved with the use of recycled concrete aggregate (52.52 kg/t). Accelerate carbonation conditions led to an increase in carbon capture of 525% compared to curing under atmospheric conditions. Accelerated carbonation of cement-based products containing recycled aggregates from construction and demolition waste is a promising technology for CO<sub>2</sub> capture and utilisation and a way to mitigate the effects of climate change, as well as promote the new circular economy paradigm.https://www.mdpi.com/1996-1944/16/8/2995construction and demolition wasteporous concreteCO<sub>2</sub> uptakeaccelerated carbonation |
| spellingShingle | Antonio Manuel Merino-Lechuga Ágata González-Caro Enrique Fernández-Ledesma José Ramón Jiménez José María Fernández-Rodríguez David Suescum-Morales Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast Elements Materials construction and demolition waste porous concrete CO<sub>2</sub> uptake accelerated carbonation |
| title | Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast Elements |
| title_full | Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast Elements |
| title_fullStr | Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast Elements |
| title_full_unstemmed | Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast Elements |
| title_short | Accelerated Carbonation of Vibro-Compacted Porous Concrete for Eco-Friendly Precast Elements |
| title_sort | accelerated carbonation of vibro compacted porous concrete for eco friendly precast elements |
| topic | construction and demolition waste porous concrete CO<sub>2</sub> uptake accelerated carbonation |
| url | https://www.mdpi.com/1996-1944/16/8/2995 |
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