Development of Magnesium/Calcium Oxalate Cements
Magnesium oxalate cement, a novel alternative to portland cement, can be made at room temperature by reacting dead-burned magnesia and salts of oxalic acid. Since oxalic acid can be made using captured carbon dioxide, oxalate cements may even be carbon negative. However, emissions related with the...
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| Format: | Article |
| Language: | English |
| Published: |
Consejo Superior de Investigaciones Científicas
2023-04-01
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| Series: | Materiales de Construccion |
| Subjects: | |
| Online Access: | https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2981 |
| _version_ | 1797821133533216768 |
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| author | Baki Aykut Bilginer Sinan Turhan Erdoğan |
| author_facet | Baki Aykut Bilginer Sinan Turhan Erdoğan |
| author_sort | Baki Aykut Bilginer |
| collection | DOAJ |
| description |
Magnesium oxalate cement, a novel alternative to portland cement, can be made at room temperature by reacting dead-burned magnesia and salts of oxalic acid. Since oxalic acid can be made using captured carbon dioxide, oxalate cements may even be carbon negative. However, emissions related with the decarbonation of magnesite at high temperatures make this hard to achieve. This study investigates the effect of replacing magnesia with granulated blast furnace slag on some physical and mechanical properties, as well as the mineralogy and microstructure of oxalate cements. Whewellite and Weddellite are identified when slag is used, in addition to Glushinskite which forms from magnesia. Slag-only mortars undergo faster but less complete reactions and show lower resistance to water than their magnesium oxalate counterparts. An equal-part combination of dead-burned magnesia and slag gives the highest 28-d strength (> 35 MPa), pH~7, and high water resistance.
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| first_indexed | 2024-03-13T09:48:14Z |
| format | Article |
| id | doaj.art-2497fa187d4f4f47b8ea4e660019653d |
| institution | Directory Open Access Journal |
| issn | 0465-2746 1988-3226 |
| language | English |
| last_indexed | 2024-03-13T09:48:14Z |
| publishDate | 2023-04-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Materiales de Construccion |
| spelling | doaj.art-2497fa187d4f4f47b8ea4e660019653d2023-05-24T18:33:46ZengConsejo Superior de Investigaciones CientíficasMateriales de Construccion0465-27461988-32262023-04-017335010.3989/mc.2023.298122Development of Magnesium/Calcium Oxalate CementsBaki Aykut Bilginer0Sinan Turhan Erdoğan1Dept. of Civil Engineering, Middle East Technical University (METU)Dept. of Civil Engineering, Middle East Technical University (METU) Magnesium oxalate cement, a novel alternative to portland cement, can be made at room temperature by reacting dead-burned magnesia and salts of oxalic acid. Since oxalic acid can be made using captured carbon dioxide, oxalate cements may even be carbon negative. However, emissions related with the decarbonation of magnesite at high temperatures make this hard to achieve. This study investigates the effect of replacing magnesia with granulated blast furnace slag on some physical and mechanical properties, as well as the mineralogy and microstructure of oxalate cements. Whewellite and Weddellite are identified when slag is used, in addition to Glushinskite which forms from magnesia. Slag-only mortars undergo faster but less complete reactions and show lower resistance to water than their magnesium oxalate counterparts. An equal-part combination of dead-burned magnesia and slag gives the highest 28-d strength (> 35 MPa), pH~7, and high water resistance. https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2981cementoxalateslagmagnesiacarbon dioxide |
| spellingShingle | Baki Aykut Bilginer Sinan Turhan Erdoğan Development of Magnesium/Calcium Oxalate Cements Materiales de Construccion cement oxalate slag magnesia carbon dioxide |
| title | Development of Magnesium/Calcium Oxalate Cements |
| title_full | Development of Magnesium/Calcium Oxalate Cements |
| title_fullStr | Development of Magnesium/Calcium Oxalate Cements |
| title_full_unstemmed | Development of Magnesium/Calcium Oxalate Cements |
| title_short | Development of Magnesium/Calcium Oxalate Cements |
| title_sort | development of magnesium calcium oxalate cements |
| topic | cement oxalate slag magnesia carbon dioxide |
| url | https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2981 |
| work_keys_str_mv | AT bakiaykutbilginer developmentofmagnesiumcalciumoxalatecements AT sinanturhanerdogan developmentofmagnesiumcalciumoxalatecements |