Hydration of Cement in the Presence of Biocidal Modifiers Based on Metal Hydrosilicates
This article presents the results of a study of the characteristics of hydration and properties of a composite biocidal cement binder containing hydrosilicates of barium, copper or zinc. It was found that copper hydrosilicates block hydration processes, and when zinc hydrosilicates are used, the rat...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/1/292 |
| _version_ | 1797498428577546240 |
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| author | Anna N. Grishina Evgenij V. Korolev Vitaliy A. Gladkikh |
| author_facet | Anna N. Grishina Evgenij V. Korolev Vitaliy A. Gladkikh |
| author_sort | Anna N. Grishina |
| collection | DOAJ |
| description | This article presents the results of a study of the characteristics of hydration and properties of a composite biocidal cement binder containing hydrosilicates of barium, copper or zinc. It was found that copper hydrosilicates block hydration processes, and when zinc hydrosilicates are used, the rate of hydration is determined by the content of silicic acid. The limiting concentrations of biocidal modifiers have been established: zinc hydrosilicates—no more than 4% and copper hydrosilicates—no more than 0.5%, which are advisable to use for the manufacture of a biocidal composite binder. It is shown that modifying additives slow down the setting time, the amount of tricalcium silicate in cement stones increases, and their strength for some compositions decreases. Active binding of portlandite with the formation of calcium hydrosilicates occurs when the content of zinc hydrosilicates is 2%, which leads to an increase in the strength of the materials. |
| first_indexed | 2024-03-10T03:34:15Z |
| format | Article |
| id | doaj.art-df42a67c4a4a4b479feab9443b414109 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:34:15Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-df42a67c4a4a4b479feab9443b4141092023-11-23T11:51:02ZengMDPI AGMaterials1996-19442021-12-0115129210.3390/ma15010292Hydration of Cement in the Presence of Biocidal Modifiers Based on Metal HydrosilicatesAnna N. Grishina0Evgenij V. Korolev1Vitaliy A. Gladkikh2REC “Nanomaterials and Nanotechnology”, Research Center “MGSU Stroy-Test”, National Research Moscow State University of Civil Engineering, 129337 Moscow, RussiaREC “Nanomaterials and Nanotechnology”, Research Center “MGSU Stroy-Test”, National Research Moscow State University of Civil Engineering, 129337 Moscow, RussiaREC “Nanomaterials and Nanotechnology”, Research Center “MGSU Stroy-Test”, National Research Moscow State University of Civil Engineering, 129337 Moscow, RussiaThis article presents the results of a study of the characteristics of hydration and properties of a composite biocidal cement binder containing hydrosilicates of barium, copper or zinc. It was found that copper hydrosilicates block hydration processes, and when zinc hydrosilicates are used, the rate of hydration is determined by the content of silicic acid. The limiting concentrations of biocidal modifiers have been established: zinc hydrosilicates—no more than 4% and copper hydrosilicates—no more than 0.5%, which are advisable to use for the manufacture of a biocidal composite binder. It is shown that modifying additives slow down the setting time, the amount of tricalcium silicate in cement stones increases, and their strength for some compositions decreases. Active binding of portlandite with the formation of calcium hydrosilicates occurs when the content of zinc hydrosilicates is 2%, which leads to an increase in the strength of the materials.https://www.mdpi.com/1996-1944/15/1/292composite cement binderbarium hydrosilicateszinc hydrosilicatescopper hydrosilicateshydrationdifferential thermal analysis |
| spellingShingle | Anna N. Grishina Evgenij V. Korolev Vitaliy A. Gladkikh Hydration of Cement in the Presence of Biocidal Modifiers Based on Metal Hydrosilicates Materials composite cement binder barium hydrosilicates zinc hydrosilicates copper hydrosilicates hydration differential thermal analysis |
| title | Hydration of Cement in the Presence of Biocidal Modifiers Based on Metal Hydrosilicates |
| title_full | Hydration of Cement in the Presence of Biocidal Modifiers Based on Metal Hydrosilicates |
| title_fullStr | Hydration of Cement in the Presence of Biocidal Modifiers Based on Metal Hydrosilicates |
| title_full_unstemmed | Hydration of Cement in the Presence of Biocidal Modifiers Based on Metal Hydrosilicates |
| title_short | Hydration of Cement in the Presence of Biocidal Modifiers Based on Metal Hydrosilicates |
| title_sort | hydration of cement in the presence of biocidal modifiers based on metal hydrosilicates |
| topic | composite cement binder barium hydrosilicates zinc hydrosilicates copper hydrosilicates hydration differential thermal analysis |
| url | https://www.mdpi.com/1996-1944/15/1/292 |
| work_keys_str_mv | AT annangrishina hydrationofcementinthepresenceofbiocidalmodifiersbasedonmetalhydrosilicates AT evgenijvkorolev hydrationofcementinthepresenceofbiocidalmodifiersbasedonmetalhydrosilicates AT vitaliyagladkikh hydrationofcementinthepresenceofbiocidalmodifiersbasedonmetalhydrosilicates |