About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Characterization of Minerals, Metals and Materials 2025: In-Situ Characterization Techniques
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Presentation Title |
Contribution of mineral oil on pore stability of alkali-activated composites for co2 capture |
Author(s) |
Laura Silvestro, Madeleing Barraza, Alexandre Esteves, Clara Vieira, Carlos Mauricio Vieira , Sergio Monteiro, Afonso Azevedo |
On-Site Speaker (Planned) |
Afonso Azevedo |
Abstract Scope |
Developing a porous part capable of sequestering carbon dioxide (CO2) requires ensuring that the porous distribution remains stable during its processing, i.e. mixing, molding, densification and hardening. This study aims to evaluate the technical changes caused by mineral oil in alkaline activation systems for CO2 capture purposes. Unitary and binary systems consisting of metakaolin, slag and fly ash in different proportions, activated by sodium hydroxide and sodium silicate were evaluated using mini-slump, mechanical strength, open porosity, porosity distribution and electron microscopy. The main variables of the system were surfactant and hydrogen peroxide, used with different percentages of addition, such as, cure temperature. This evaluation would make it possible to indicate which combinations of precursors and additives can favor pore stability, as well as, comparatively, which processing conditions can favor or impair pore stability. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Composites, |