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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2016-03-01
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| Series: | Dyna |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/dyna/article/view/54189 |
| _version_ | 1818835795781353472 |
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| author | Yasna Segura Sierpes María Victoria Borrachero Rosado José María Monzó Balbuena Jordi Payá Bernabeu |
| author_facet | Yasna Segura Sierpes María Victoria Borrachero Rosado José María Monzó Balbuena Jordi Payá Bernabeu |
| author_sort | Yasna Segura Sierpes |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-19T02:56:24Z |
| format | Article |
| id | doaj.art-16396c32d1a84659b0c2b3bceffe5783 |
| institution | Directory Open Access Journal |
| issn | 0012-7353 2346-2183 |
| language | English |
| last_indexed | 2024-12-19T02:56:24Z |
| publishDate | 2016-03-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Dyna |
| spelling | doaj.art-16396c32d1a84659b0c2b3bceffe57832022-12-21T20:38:20ZengUniversidad Nacional de ColombiaDyna0012-73532346-21832016-03-018319622923810.15446/dyna.v83n196.5418943018Preliminary studies on hydrated cement for its reuse in geopolymersYasna Segura Sierpes0María Victoria Borrachero Rosado1José María Monzó Balbuena2Jordi Payá Bernabeu3Facultad de Ingeniería, Universidad de Magallanes, Punta Arenas, ChileUniversitat Politècnica de ValènciaUniversitat Politècnica de Valencia EspañaUniversitat Politècnica de ValènciaThe 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.https://revistas.unal.edu.co/index.php/dyna/article/view/54189Alkali activationcarbonationgeopolymerhydrated cementmechanical strengthmicrostructurewaste. |
| spellingShingle | Yasna Segura Sierpes María Victoria Borrachero Rosado José María Monzó Balbuena Jordi Payá Bernabeu Preliminary studies on hydrated cement for its reuse in geopolymers Dyna Alkali activation carbonation geopolymer hydrated cement mechanical strength microstructure waste. |
| title | 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_short | Preliminary studies on hydrated cement for its reuse in geopolymers |
| title_sort | preliminary studies on hydrated cement for its reuse in geopolymers |
| topic | Alkali activation carbonation geopolymer hydrated cement mechanical strength microstructure waste. |
| url | https://revistas.unal.edu.co/index.php/dyna/article/view/54189 |
| work_keys_str_mv | AT yasnasegurasierpes preliminarystudiesonhydratedcementforitsreuseingeopolymers AT mariavictoriaborracherorosado preliminarystudiesonhydratedcementforitsreuseingeopolymers AT josemariamonzobalbuena preliminarystudiesonhydratedcementforitsreuseingeopolymers AT jordipayabernabeu preliminarystudiesonhydratedcementforitsreuseingeopolymers |