| Residential College | false |
| Status | 已發表Published |
| Numerical study on the chemical and electrochemical coupling mechanisms for concrete under combined chloride-sulfate attack | |
Meng, Zhaozheng1,7; Liu, Qing feng1,2 ; Ukrainczyk, Neven3; Mu, Song4; Zhang, Yufei5; De Schutter, Geert6
| |
| 2024 | |
| Source Publication | Cement and Concrete Research
 |
| ISSN | 0008-8846 |
| Volume | 175Pages:107368 |
| Abstract | Cementitious materials exposed to marine and saline environments are commonly threatened by a combined attack of sulfate and chloride ions. This study developed a numerical framework to investigate two combined coupling mechanisms of 1) coupled solid-liquid chemical reactions for competitive chloride-sulfate attack and 2) electrostatic multi-ion coupling effect on reactive-transport mechanisms. Various chemical reactions including sulfate attack with anhydrous calcium aluminates, secondary precipitation of expansive minerals, competitive binding, and calcium leaching have been quantified. The electrostatic potential caused by multi-ions coupling was solved according to constitutive electrochemical laws. After model validation, the chemical coupling mechanisms for solid-liquid reactions during competitive chloride-sulfate binding were investigated. On this foundation, the influence of electrostatic multi-ionic coupling effects on ionic transport and its interaction with chemical coupling were disclosed. It was found that neglecting multi-ions coupling effect would result in an underestimated chemical coupling strength in competitive chloride-sulfate binding. |
| Keyword | Chloride Ingress Competitive Binding Electrostatic Potential Numerical Modelling Reactive-transport Sulfate Attack |
| DOI | 10.1016/j.cemconres.2023.107368 |
| URL | View the original |
| Indexed By | SCIE |
| Language | 英語English |
| WOS Research Area | Construction & Building Technology ; Materials Science |
| WOS Subject | Construction & Building Technology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:001125056400001 |
| Scopus ID | 2-s2.0-85181657354 |
| Fulltext Access | |
| Citation statistics | |
| Document Type | Journal article |
| Collection | University of Macau |
| Corresponding Author | Liu, Qing feng |
| Affiliation | 1.State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China 2.Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure, Shanghai, China 3.Institute of Construction and Building Materials, Technical University of Darmstadt, Darmstadt, Franziska-Braun-Str 7, 64287, Germany 4.State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Research Institute of Building Science, Nanjing, China 5.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macao 6.Ghent University, Department of Structural Engineering and Building Materials, Magnel-Vandepitte Laboratory, Ghent, Technologiepark-Zwijnaarde 60, 9052, Belgium 7.Microlab, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, 2628, Netherlands |
| Recommended Citation GB/T 7714 | Meng, Zhaozheng,Liu, Qing feng,Ukrainczyk, Neven,et al. Numerical study on the chemical and electrochemical coupling mechanisms for concrete under combined chloride-sulfate attack[J]. Cement and Concrete Research, 2024, 175, 107368. |
| APA | Meng, Zhaozheng., Liu, Qing feng., Ukrainczyk, Neven., Mu, Song., Zhang, Yufei., & De Schutter, Geert (2024). Numerical study on the chemical and electrochemical coupling mechanisms for concrete under combined chloride-sulfate attack. Cement and Concrete Research, 175, 107368. |
| MLA | Meng, Zhaozheng,et al."Numerical study on the chemical and electrochemical coupling mechanisms for concrete under combined chloride-sulfate attack".Cement and Concrete Research 175(2024):107368. |
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