Perko, Janez ; Ukrainczyk, Neven ; Šavija, Branko ; Phung, Quoc Tri ; Koenders, Eddie A. B. (2020)
Influence of Micro-Pore Connectivity and Micro-Fractures on Calcium Leaching of Cement Pastes — A Coupled Simulation Approach.
In: Materials, 13 (12)
doi: 10.3390/ma13122697
Article, Bibliographie
This is the latest version of this item.
Abstract
A coupled numerical approach is used to evaluate the influence of pore connectivity and microcracks on leaching kinetics in fully saturated cement paste. The unique advantage of the numerical model is the ability to construct and evaluate a material with controlled properties, which is very difficult under experimental conditions. Our analysis is based on two virtual microstructures, which are different in terms of pore connectivity but the same in terms of porosity and the amount of solid phases. Numerical fracturing was performed on these microstructures. The non-fractured and fractured microstructures were both subjected to chemical leaching. Results show that despite very different material physical properties, for example, pore connectivity and effective diffusivity, the leaching kinetics remain the same as long as the amount of soluble phases, i.e., buffering capacity, is the same. The leaching kinetics also remains the same in the presence of microcracks.
| Item Type: | Article |
|---|---|
| Erschienen: | 2020 |
| Creators: | Perko, Janez ; Ukrainczyk, Neven ; Šavija, Branko ; Phung, Quoc Tri ; Koenders, Eddie A. B. |
| Type of entry: | Bibliographie |
| Title: | Influence of Micro-Pore Connectivity and Micro-Fractures on Calcium Leaching of Cement Pastes — A Coupled Simulation Approach |
| Language: | English |
| Date: | 2020 |
| Place of Publication: | Basel |
| Publisher: | MDPI |
| Journal or Publication Title: | Materials |
| Volume of the journal: | 13 |
| Issue Number: | 12 |
| Collation: | 23 Seiten |
| DOI: | 10.3390/ma13122697 |
| Corresponding Links: | |
| Abstract: | A coupled numerical approach is used to evaluate the influence of pore connectivity and microcracks on leaching kinetics in fully saturated cement paste. The unique advantage of the numerical model is the ability to construct and evaluate a material with controlled properties, which is very difficult under experimental conditions. Our analysis is based on two virtual microstructures, which are different in terms of pore connectivity but the same in terms of porosity and the amount of solid phases. Numerical fracturing was performed on these microstructures. The non-fractured and fractured microstructures were both subjected to chemical leaching. Results show that despite very different material physical properties, for example, pore connectivity and effective diffusivity, the leaching kinetics remain the same as long as the amount of soluble phases, i.e., buffering capacity, is the same. The leaching kinetics also remains the same in the presence of microcracks. |
| Uncontrolled Keywords: | numerical models, pore scale, cement leaching, micro-fractures, pore connectivity, effective diffusivity |
| Additional Information: | This article belongs to the Special Issue Modeling of Cementitious Materials and Structures |
| Classification DDC: | 600 Technology, medicine, applied sciences > 624 Civil engineering and environmental protection engineering |
| Divisions: | 13 Department of Civil and Environmental Engineering Sciences 13 Department of Civil and Environmental Engineering Sciences > Institute of Construction and Building Materials |
| Date Deposited: | 16 Jan 2024 08:00 |
| Last Modified: | 16 Jan 2024 08:00 |
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| Suche nach Titel in: | TUfind oder in Google |
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Influence of Micro-Pore Connectivity and Micro-Fractures on Calcium Leaching of Cement Pastes — A Coupled Simulation Approach. (deposited 15 Jan 2024 14:15)
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