Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer
Geopolymer materials are characterized by their high durability and low carbon dioxide emissions, when compared with more traditional materials, like concrete made from ordinary Portland cement. These are interesting advantages and might lead to a more sustainable construction industry. The aim of t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/10/3349 |
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| author | Adelino V. Lopes Sergio M.R. Lopes Isabel Pinto |
| author_facet | Adelino V. Lopes Sergio M.R. Lopes Isabel Pinto |
| author_sort | Adelino V. Lopes |
| collection | DOAJ |
| description | Geopolymer materials are characterized by their high durability and low carbon dioxide emissions, when compared with more traditional materials, like concrete made from ordinary Portland cement. These are interesting advantages and might lead to a more sustainable construction industry. The aim of this study is the characterization of the mechanical behavior of the materials obtained by the activation of metakaolin. The activator is a mixture of sodium hydroxide with sodium silicate in different proportions. The influence of the composition of activator is studied. For the analysis of the mechanical properties of the different mixtures two different types of tests were performed, bending tensile strength tests and compressive strength tests. The results show that an activator with not less than 300 g of sodium hydroxide and not exceeding 600 g of sodium silicate per 750 g of metakaolin gives the best results, for both tensile strength and compressive strength. |
| first_indexed | 2024-03-10T19:53:56Z |
| format | Article |
| id | doaj.art-d16f062a264f4a95911e6bfeea770cc1 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T19:53:56Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-d16f062a264f4a95911e6bfeea770cc12023-11-20T00:08:41ZengMDPI AGApplied Sciences2076-34172020-05-011010334910.3390/app10103349Influence of the Composition of the Activator on Mechanical Characteristics of a GeopolymerAdelino V. Lopes0Sergio M.R. Lopes1Isabel Pinto2Institute for Systems and Computers Engineering, Department of Civil Engineering, University of Coimbra, 3030-788 Coimbra, PortugalCentre for Mechanical Engineering, Materials and Processes, Department of Civil Engineering, University of Coimbra, 3030-788 Coimbra, PortugalCentre for Mechanical Engineering, Materials and Processes, Department of Civil Engineering, University of Coimbra, 3030-788 Coimbra, PortugalGeopolymer materials are characterized by their high durability and low carbon dioxide emissions, when compared with more traditional materials, like concrete made from ordinary Portland cement. These are interesting advantages and might lead to a more sustainable construction industry. The aim of this study is the characterization of the mechanical behavior of the materials obtained by the activation of metakaolin. The activator is a mixture of sodium hydroxide with sodium silicate in different proportions. The influence of the composition of activator is studied. For the analysis of the mechanical properties of the different mixtures two different types of tests were performed, bending tensile strength tests and compressive strength tests. The results show that an activator with not less than 300 g of sodium hydroxide and not exceeding 600 g of sodium silicate per 750 g of metakaolin gives the best results, for both tensile strength and compressive strength.https://www.mdpi.com/2076-3417/10/10/3349GeopolymerAlkali activatedcompressive strengthtensile strengthdeformability |
| spellingShingle | Adelino V. Lopes Sergio M.R. Lopes Isabel Pinto Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer Applied Sciences Geopolymer Alkali activated compressive strength tensile strength deformability |
| title | Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
| title_full | Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
| title_fullStr | Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
| title_full_unstemmed | Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
| title_short | Influence of the Composition of the Activator on Mechanical Characteristics of a Geopolymer |
| title_sort | influence of the composition of the activator on mechanical characteristics of a geopolymer |
| topic | Geopolymer Alkali activated compressive strength tensile strength deformability |
| url | https://www.mdpi.com/2076-3417/10/10/3349 |
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