Chemical Evolution of Pore Solution in Metakaolin Concrete During Water Evaporation
Metakaolin concrete is a kind of porous material, which contains a variety of chemical ions in the pores. Solutions in these pores are exposed to the atmosphere and exist evaporation and condensation processes, therefore, the pore solution volume of concrete changes all the time. When the ion concen...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Kaunas University of Technology
2023-02-01
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| Series: | Medžiagotyra |
| Subjects: | |
| Online Access: | https://matsc.ktu.lt/index.php/MatSc/article/view/29935 |
| _version_ | 1797900524075352064 |
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| author | Xuebing WANG Shengbo GUO |
| author_facet | Xuebing WANG Shengbo GUO |
| author_sort | Xuebing WANG |
| collection | DOAJ |
| description | Metakaolin concrete is a kind of porous material, which contains a variety of chemical ions in the pores. Solutions in these pores are exposed to the atmosphere and exist evaporation and condensation processes, therefore, the pore solution volume of concrete changes all the time. When the ion concentration in the pore solution changes, it has an important impact on the strength development and durability of concrete. However, the real-time monitoring of the concentration of pore solution was difficult. To study the chemical evolution of pore solution in concrete, the variation of saturated vapor pressure on the surface of metakaolin concrete was studied based on the Cisternas-Lam rule. The evaporation rate of solvent in the pore solution of concrete under the corresponding saturated vapor pressure in this paper was studied by the Stefan diffusion method. The dynamic equilibrium process equation of ions in pore solution was then established based on the thermodynamic equilibrium equation. Based on the above model, the change process of the pore solution of metakaolin concrete was studied, and it was verified by the results of the literature. |
| first_indexed | 2024-04-10T08:46:19Z |
| format | Article |
| id | doaj.art-e207797b4b154212b4aa23d38da76769 |
| institution | Directory Open Access Journal |
| issn | 1392-1320 2029-7289 |
| language | English |
| last_indexed | 2024-04-10T08:46:19Z |
| publishDate | 2023-02-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj.art-e207797b4b154212b4aa23d38da767692023-02-22T07:43:11ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892023-02-012919710310.5755/j02.ms.2993535189Chemical Evolution of Pore Solution in Metakaolin Concrete During Water EvaporationXuebing WANG0https://orcid.org/0000-0003-2682-0675Shengbo GUO1Hubei University of Arts and ScienceHubei University of Arts and ScienceMetakaolin concrete is a kind of porous material, which contains a variety of chemical ions in the pores. Solutions in these pores are exposed to the atmosphere and exist evaporation and condensation processes, therefore, the pore solution volume of concrete changes all the time. When the ion concentration in the pore solution changes, it has an important impact on the strength development and durability of concrete. However, the real-time monitoring of the concentration of pore solution was difficult. To study the chemical evolution of pore solution in concrete, the variation of saturated vapor pressure on the surface of metakaolin concrete was studied based on the Cisternas-Lam rule. The evaporation rate of solvent in the pore solution of concrete under the corresponding saturated vapor pressure in this paper was studied by the Stefan diffusion method. The dynamic equilibrium process equation of ions in pore solution was then established based on the thermodynamic equilibrium equation. Based on the above model, the change process of the pore solution of metakaolin concrete was studied, and it was verified by the results of the literature.https://matsc.ktu.lt/index.php/MatSc/article/view/29935concretesolution chemistryhumiditychemical properties |
| spellingShingle | Xuebing WANG Shengbo GUO Chemical Evolution of Pore Solution in Metakaolin Concrete During Water Evaporation Medžiagotyra concrete solution chemistry humidity chemical properties |
| title | Chemical Evolution of Pore Solution in Metakaolin Concrete During Water Evaporation |
| title_full | Chemical Evolution of Pore Solution in Metakaolin Concrete During Water Evaporation |
| title_fullStr | Chemical Evolution of Pore Solution in Metakaolin Concrete During Water Evaporation |
| title_full_unstemmed | Chemical Evolution of Pore Solution in Metakaolin Concrete During Water Evaporation |
| title_short | Chemical Evolution of Pore Solution in Metakaolin Concrete During Water Evaporation |
| title_sort | chemical evolution of pore solution in metakaolin concrete during water evaporation |
| topic | concrete solution chemistry humidity chemical properties |
| url | https://matsc.ktu.lt/index.php/MatSc/article/view/29935 |
| work_keys_str_mv | AT xuebingwang chemicalevolutionofporesolutioninmetakaolinconcreteduringwaterevaporation AT shengboguo chemicalevolutionofporesolutioninmetakaolinconcreteduringwaterevaporation |