Preliminary studies on hydrated cement for its reuse in geopolymers
The carbonation of hydrated ordinary Portland cement (OPC) allows the transformation of hydrated calcium aluminates and silicates into calcium carbonate and amorphous silica/ alumina. These carbonated materials are appropriate to being used as inorganic precursors for alkaline activation. The use of...
- Autores:
-
Segura Sierpes, Yasna
Borrachero Rosado, María Victoria
Monzó Balbuena, José María
Payá Bernabeu, Jordi
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2016
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/60567
- Acceso en línea:
- https://repositorio.unal.edu.co/handle/unal/60567
http://bdigital.unal.edu.co/58899/
- Palabra clave:
- 62 Ingeniería y operaciones afines / Engineering
Alkali activation
carbonation
geopolymer
hydrated cement
mechanical strength
microstructure
waste.
- Rights
- openAccess
- License
- Atribución-NoComercial 4.0 Internacional
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Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Segura Sierpes, Yasna1677880f-bd33-4b4b-a51f-b8425eed5d31300Borrachero Rosado, María Victoria5c4fd7fa-22b4-4ada-af4e-7c8af2733c55300Monzó Balbuena, José Maríaf9198c0e-f87b-4d02-b3a9-c265ea85a904300Payá Bernabeu, Jordi7034c8d7-3f34-409a-9fc3-92f102f46bfe3002019-07-02T18:36:58Z2019-07-02T18:36:58Z2016-03-01ISSN: 2346-2183https://repositorio.unal.edu.co/handle/unal/60567http://bdigital.unal.edu.co/58899/The carbonation of hydrated ordinary Portland cement (OPC) allows the transformation of hydrated calcium aluminates and silicates into calcium carbonate and amorphous silica/ alumina. These carbonated materials are appropriate to being used as inorganic precursors for alkaline activation. The use of sodium silicate and hydroxide solutions enables the production of cementitious gels. Two ways of carbonation of hydrated cement were studied: in a dry environment, where relative humidity did not exceed 70% and in an aqueous medium at a temperature of 5 ± 1 ° C. Both materials were micro-structurally characterised and they have been used for the manufacturing of geopolymeric mortars. These mortars reached mechanical strength between 10 and 20 MPa, depending on the activating solution, the water/binder ratio and curing time/temperature. These results show the feasibility of reusing hydrated cement contained in construction and demolition wastes.application/pdfspaUniversidad Nacional de Colombia (Sede Medellín). Facultad de Minas.https://revistas.unal.edu.co/index.php/dyna/article/view/54189Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaSegura Sierpes, Yasna and Borrachero Rosado, María Victoria and Monzó Balbuena, José María and Payá Bernabeu, Jordi (2016) Preliminary studies on hydrated cement for its reuse in geopolymers. DYNA, 83 (196). pp. 229-238. ISSN 2346-218362 Ingeniería y operaciones afines / EngineeringAlkali activationcarbonationgeopolymerhydrated cementmechanical strengthmicrostructurewaste.Preliminary studies on hydrated cement for its reuse in geopolymersArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTORIGINAL54189-290193-1-PB.pdfapplication/pdf1277928https://repositorio.unal.edu.co/bitstream/unal/60567/1/54189-290193-1-PB.pdfc8b14c7c48ea172a6f201a7cbf2ba265MD51THUMBNAIL54189-290193-1-PB.pdf.jpg54189-290193-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg9334https://repositorio.unal.edu.co/bitstream/unal/60567/2/54189-290193-1-PB.pdf.jpg04b4d1e43c394cafd73b649854c61a0aMD52unal/60567oai:repositorio.unal.edu.co:unal/605672024-04-14 23:11:05.098Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co |
| dc.title.spa.fl_str_mv |
Preliminary studies on hydrated cement for its reuse in geopolymers |
| title |
Preliminary studies on hydrated cement for its reuse in geopolymers |
| spellingShingle |
Preliminary studies on hydrated cement for its reuse in geopolymers 62 Ingeniería y operaciones afines / Engineering Alkali activation carbonation geopolymer hydrated cement mechanical strength microstructure waste. |
| title_short |
Preliminary studies on hydrated cement for its reuse in geopolymers |
| title_full |
Preliminary studies on hydrated cement for its reuse in geopolymers |
| title_fullStr |
Preliminary studies on hydrated cement for its reuse in geopolymers |
| title_full_unstemmed |
Preliminary studies on hydrated cement for its reuse in geopolymers |
| title_sort |
Preliminary studies on hydrated cement for its reuse in geopolymers |
| dc.creator.fl_str_mv |
Segura Sierpes, Yasna Borrachero Rosado, María Victoria Monzó Balbuena, José María Payá Bernabeu, Jordi |
| dc.contributor.author.spa.fl_str_mv |
Segura Sierpes, Yasna Borrachero Rosado, María Victoria Monzó Balbuena, José María Payá Bernabeu, Jordi |
| dc.subject.ddc.spa.fl_str_mv |
62 Ingeniería y operaciones afines / Engineering |
| topic |
62 Ingeniería y operaciones afines / Engineering Alkali activation carbonation geopolymer hydrated cement mechanical strength microstructure waste. |
| dc.subject.proposal.spa.fl_str_mv |
Alkali activation carbonation geopolymer hydrated cement mechanical strength microstructure waste. |
| description |
The carbonation of hydrated ordinary Portland cement (OPC) allows the transformation of hydrated calcium aluminates and silicates into calcium carbonate and amorphous silica/ alumina. These carbonated materials are appropriate to being used as inorganic precursors for alkaline activation. The use of sodium silicate and hydroxide solutions enables the production of cementitious gels. Two ways of carbonation of hydrated cement were studied: in a dry environment, where relative humidity did not exceed 70% and in an aqueous medium at a temperature of 5 ± 1 ° C. Both materials were micro-structurally characterised and they have been used for the manufacturing of geopolymeric mortars. These mortars reached mechanical strength between 10 and 20 MPa, depending on the activating solution, the water/binder ratio and curing time/temperature. These results show the feasibility of reusing hydrated cement contained in construction and demolition wastes. |
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2016 |
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2016-03-01 |
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2019-07-02T18:36:58Z |
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2019-07-02T18:36:58Z |
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Artículo de revista |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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info:eu-repo/semantics/article |
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Text |
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publishedVersion |
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ISSN: 2346-2183 |
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https://repositorio.unal.edu.co/handle/unal/60567 |
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http://bdigital.unal.edu.co/58899/ |
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ISSN: 2346-2183 |
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https://repositorio.unal.edu.co/handle/unal/60567 http://bdigital.unal.edu.co/58899/ |
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spa |
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spa |
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https://revistas.unal.edu.co/index.php/dyna/article/view/54189 |
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Universidad Nacional de Colombia Revistas electrónicas UN Dyna Dyna |
| dc.relation.references.spa.fl_str_mv |
Segura Sierpes, Yasna and Borrachero Rosado, María Victoria and Monzó Balbuena, José María and Payá Bernabeu, Jordi (2016) Preliminary studies on hydrated cement for its reuse in geopolymers. DYNA, 83 (196). pp. 229-238. ISSN 2346-2183 |
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Derechos reservados - Universidad Nacional de Colombia |
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Atribución-NoComercial 4.0 Internacional |
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info:eu-repo/semantics/openAccess |
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Atribución-NoComercial 4.0 Internacional Derechos reservados - Universidad Nacional de Colombia http://creativecommons.org/licenses/by-nc/4.0/ http://purl.org/coar/access_right/c_abf2 |
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Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas. |
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