Effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attack
Abstract Geopolymer cement stands as an alternative to Portland cement to reduce the impacts associated with its production. This material is also affected by ions that can damage its mechanical properties and reduce its durability. Therefore, this research aims to evaluate metakaolin geopolymer co...
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Instituto Brasileiro do Concreto (IBRACON)
2025-01-01
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| Series: | Revista IBRACON de Estruturas e Materiais |
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| author | Amanda Venancio Trisotto Tassiane Apolinário de Oliveira Maytê Dionísio Marçon Neusa Aparecida Munhak Beltrame Ronaldo Alves de Medeiros-Junior |
| author_facet | Amanda Venancio Trisotto Tassiane Apolinário de Oliveira Maytê Dionísio Marçon Neusa Aparecida Munhak Beltrame Ronaldo Alves de Medeiros-Junior |
| author_sort | Amanda Venancio Trisotto |
| collection | DOAJ |
| description | Abstract Geopolymer cement stands as an alternative to Portland cement to reduce the impacts associated with its production. This material is also affected by ions that can damage its mechanical properties and reduce its durability. Therefore, this research aims to evaluate metakaolin geopolymer concretes attacked by sulfates, both sodium and magnesium. The samples were made by varying the sodium oxide (Na2O) content in the activators on the metakaolin, the curing type, and the water/metakaolin ratio. The specimens were exposed to sodium sulfate, magnesium sulfate, and reference solutions (water) for 10 weeks. The analyses were performed using water absorption (by capillarity and immersion) and compressive strength tests. The results showed that sodium sulfate attack was more aggressive than magnesium sulfate in geopolymer concretes, 91.67% of the samples submitted to sodium sulfate degraded during absorptions tests while 8.33% were degraded by magnesium sulfate. A sodium content of 22% in metakaolin achieved greater resistance to magnesium sulfate attack and curing by carbonation did not improve the properties of the mixtures. |
| format | Article |
| id | doaj-art-fd37e9ffa5e141babee70464e43dee96 |
| institution | Kabale University |
| issn | 1983-4195 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Instituto Brasileiro do Concreto (IBRACON) |
| record_format | Article |
| series | Revista IBRACON de Estruturas e Materiais |
| spelling | doaj-art-fd37e9ffa5e141babee70464e43dee962025-01-21T07:38:37ZengInstituto Brasileiro do Concreto (IBRACON)Revista IBRACON de Estruturas e Materiais1983-41952025-01-0118110.1590/s1983-41952025000800007Effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attackAmanda Venancio Trisottohttps://orcid.org/0009-0007-2528-9698Tassiane Apolinário de Oliveirahttps://orcid.org/0000-0002-7269-9186Maytê Dionísio Marçonhttps://orcid.org/0009-0006-0279-4184Neusa Aparecida Munhak Beltramehttps://orcid.org/0000-0001-7240-4344Ronaldo Alves de Medeiros-Juniorhttps://orcid.org/0000-0003-4879-4869 Abstract Geopolymer cement stands as an alternative to Portland cement to reduce the impacts associated with its production. This material is also affected by ions that can damage its mechanical properties and reduce its durability. Therefore, this research aims to evaluate metakaolin geopolymer concretes attacked by sulfates, both sodium and magnesium. The samples were made by varying the sodium oxide (Na2O) content in the activators on the metakaolin, the curing type, and the water/metakaolin ratio. The specimens were exposed to sodium sulfate, magnesium sulfate, and reference solutions (water) for 10 weeks. The analyses were performed using water absorption (by capillarity and immersion) and compressive strength tests. The results showed that sodium sulfate attack was more aggressive than magnesium sulfate in geopolymer concretes, 91.67% of the samples submitted to sodium sulfate degraded during absorptions tests while 8.33% were degraded by magnesium sulfate. A sodium content of 22% in metakaolin achieved greater resistance to magnesium sulfate attack and curing by carbonation did not improve the properties of the mixtures.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952025000100207&lng=en&tlng=ensulfate attackgeopolymerpermeabilitycarbonation curing |
| spellingShingle | Amanda Venancio Trisotto Tassiane Apolinário de Oliveira Maytê Dionísio Marçon Neusa Aparecida Munhak Beltrame Ronaldo Alves de Medeiros-Junior Effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attack Revista IBRACON de Estruturas e Materiais sulfate attack geopolymer permeability carbonation curing |
| title | Effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attack |
| title_full | Effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attack |
| title_fullStr | Effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attack |
| title_full_unstemmed | Effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attack |
| title_short | Effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attack |
| title_sort | effect of carbonation curing and sodium content on geopolymer subjected to sodium and magnesium sulfate attack |
| topic | sulfate attack geopolymer permeability carbonation curing |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952025000100207&lng=en&tlng=en |
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