Use of Carbonated Water as Kneading in Mortars Made with Recycled Aggregates
The increased concern about climate change is revolutionising the building materials sector, making sustainability and environmental friendliness increasingly important. This study evaluates the feasibility of incorporating recycled masonry aggregate (construction and demolition waste) in porous cem...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/14/4876 |
| _version_ | 1797433410727182336 |
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| author | David Suescum-Morales José Ramón Jiménez José María Fernández-Rodríguez |
| author_facet | David Suescum-Morales José Ramón Jiménez José María Fernández-Rodríguez |
| author_sort | David Suescum-Morales |
| collection | DOAJ |
| description | The increased concern about climate change is revolutionising the building materials sector, making sustainability and environmental friendliness increasingly important. This study evaluates the feasibility of incorporating recycled masonry aggregate (construction and demolition waste) in porous cement-based materials using carbonated water in mixing followed (or not) by curing in a CO<sub>2</sub> atmosphere. The use of carbonated water can be very revolutionary in cement-based materials, as it allows hydration and carbonation to occur simultaneously. Calcite and portlandite in the recycled masonry aggregate and act as a buffer for the low-pH carbonated water. Carbonated water produced better mechanical properties and increased accessible water porosity and dry bulk density. The same behaviour was observed with natural aggregates. Carbonated water results in an interlaced shape of carbonate ettringite (needles) and fills the microcracks in the recycled masonry aggregate. Curing in CO<sub>2</sub> together with the use of carbonated water (concomitantly) is not beneficial. This study provides innovative solutions for a circular economy in the construction sector using carbonated water in mixing (adsorbing CO<sub>2</sub>), which is very revolutionary as it allows carbonation to be applied to in-situ products. |
| first_indexed | 2024-03-09T10:16:38Z |
| format | Article |
| id | doaj.art-b2a91215a30e40c5a469cdc3b058c97b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T10:16:38Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-b2a91215a30e40c5a469cdc3b058c97b2023-12-01T22:23:00ZengMDPI AGMaterials1996-19442022-07-011514487610.3390/ma15144876Use of Carbonated Water as Kneading in Mortars Made with Recycled AggregatesDavid Suescum-Morales0José Ramón Jiménez1José María Fernández-Rodríguez2Departamento de Ingeniería Rural, Escuela Politécnica Superior de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainDepartamento de Ingeniería Rural, Escuela Politécnica Superior de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainDepartamento de Química Inorgánica e Ingeniería Química, Escuela Politécnica Superior de Belmez, Universidad de Córdoba, 14240 Córdoba, SpainThe increased concern about climate change is revolutionising the building materials sector, making sustainability and environmental friendliness increasingly important. This study evaluates the feasibility of incorporating recycled masonry aggregate (construction and demolition waste) in porous cement-based materials using carbonated water in mixing followed (or not) by curing in a CO<sub>2</sub> atmosphere. The use of carbonated water can be very revolutionary in cement-based materials, as it allows hydration and carbonation to occur simultaneously. Calcite and portlandite in the recycled masonry aggregate and act as a buffer for the low-pH carbonated water. Carbonated water produced better mechanical properties and increased accessible water porosity and dry bulk density. The same behaviour was observed with natural aggregates. Carbonated water results in an interlaced shape of carbonate ettringite (needles) and fills the microcracks in the recycled masonry aggregate. Curing in CO<sub>2</sub> together with the use of carbonated water (concomitantly) is not beneficial. This study provides innovative solutions for a circular economy in the construction sector using carbonated water in mixing (adsorbing CO<sub>2</sub>), which is very revolutionary as it allows carbonation to be applied to in-situ products.https://www.mdpi.com/1996-1944/15/14/4876carbonated waterCO<sub>2</sub> sequestrationaccelerated carbonationcircular economyconstruction demolition waste |
| spellingShingle | David Suescum-Morales José Ramón Jiménez José María Fernández-Rodríguez Use of Carbonated Water as Kneading in Mortars Made with Recycled Aggregates Materials carbonated water CO<sub>2</sub> sequestration accelerated carbonation circular economy construction demolition waste |
| title | Use of Carbonated Water as Kneading in Mortars Made with Recycled Aggregates |
| title_full | Use of Carbonated Water as Kneading in Mortars Made with Recycled Aggregates |
| title_fullStr | Use of Carbonated Water as Kneading in Mortars Made with Recycled Aggregates |
| title_full_unstemmed | Use of Carbonated Water as Kneading in Mortars Made with Recycled Aggregates |
| title_short | Use of Carbonated Water as Kneading in Mortars Made with Recycled Aggregates |
| title_sort | use of carbonated water as kneading in mortars made with recycled aggregates |
| topic | carbonated water CO<sub>2</sub> sequestration accelerated carbonation circular economy construction demolition waste |
| url | https://www.mdpi.com/1996-1944/15/14/4876 |
| work_keys_str_mv | AT davidsuescummorales useofcarbonatedwateraskneadinginmortarsmadewithrecycledaggregates AT joseramonjimenez useofcarbonatedwateraskneadinginmortarsmadewithrecycledaggregates AT josemariafernandezrodriguez useofcarbonatedwateraskneadinginmortarsmadewithrecycledaggregates |