Phase profiling of carbonated cement paste: Quantitative X-ray diffraction analysis and numerical modeling
The objective of this paper is to understand the phase changes of the carbonated cement paste by comparing experimental and numerical modeling results. Phase assemblages of hydrates and anhydrous clinkers at various depths of cement paste after carbonation were investigated using Quantitative X-ray...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522000225 |
| _version_ | 1811336271798206464 |
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| author | Jena Jeong Abel Shiferaw Alemu Solmoi Park Hyo Kyoung Lee Gebremicael Liyew Hamidréza Ramézani Vagelis G. Papadakis Hyeong-Ki Kim |
| author_facet | Jena Jeong Abel Shiferaw Alemu Solmoi Park Hyo Kyoung Lee Gebremicael Liyew Hamidréza Ramézani Vagelis G. Papadakis Hyeong-Ki Kim |
| author_sort | Jena Jeong |
| collection | DOAJ |
| description | The objective of this paper is to understand the phase changes of the carbonated cement paste by comparing experimental and numerical modeling results. Phase assemblages of hydrates and anhydrous clinkers at various depths of cement paste after carbonation were investigated using Quantitative X-ray diffraction (QXRD) analysis and numerical modeling. Carbonation with CO2 at 10 vol% and ~ 55% relative humidity was applied at ambient temperature. The paste specimens aged 14 days and 28 days were exposed to this CO2 condition for 14 days and 28 days. QXRD analysis was conducted for the various depths of specimens with 5-mm intervals from the carbonation front, and thermogravimetry analysis was also carried out to compare the results from QXRD. To explain the phase profiles from the experiments, a multi-reaction model considering hydration, carbonation, and transportation in the cement matrix was developed. The experimental results of the phase profile demonstrated good agreement with the numerical results. It was confirmed that carbonation with high concentration led to the consumption of anhydrous clinker as well as the occupation of CaCO3 in most of the volume in the skeleton of the cement paste. |
| first_indexed | 2024-04-13T17:37:01Z |
| format | Article |
| id | doaj.art-775b1207e60c4461b74262ee28fc5dba |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-13T17:37:01Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-775b1207e60c4461b74262ee28fc5dba2022-12-22T02:37:20ZengElsevierCase Studies in Construction Materials2214-50952022-06-0116e00890Phase profiling of carbonated cement paste: Quantitative X-ray diffraction analysis and numerical modelingJena Jeong0Abel Shiferaw Alemu1Solmoi Park2Hyo Kyoung Lee3Gebremicael Liyew4Hamidréza Ramézani5Vagelis G. Papadakis6Hyeong-Ki Kim7Université Gustave Eiffel, Institut de Recherche en Constructibilité, ESTP, 28 Avenue Président Wilson, Cachan, Cachan cedex, 94234 France; Corresponding authors.Department of Architectural Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, South KoreaDepartment of Civil Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, South KoreaSchool of Architecture, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, South KoreaDepartment of Architectural Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, South KoreaÉcole Polytechnique de l′Université d′Orléans, Université d′Orléans, ICMN, UMR CNRS 7374, Interfaces, Confinement, Matériaux et Nanostructures, 8 rue Léonrad de Vinci, 45072 Orléans, FranceDepartment of Environmental Engineering, School of Engineering, University of Patras, Seferi 2, GR-30100 Agrinio, GreeceDepartment of Architectural Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, South Korea; Corresponding authors.The objective of this paper is to understand the phase changes of the carbonated cement paste by comparing experimental and numerical modeling results. Phase assemblages of hydrates and anhydrous clinkers at various depths of cement paste after carbonation were investigated using Quantitative X-ray diffraction (QXRD) analysis and numerical modeling. Carbonation with CO2 at 10 vol% and ~ 55% relative humidity was applied at ambient temperature. The paste specimens aged 14 days and 28 days were exposed to this CO2 condition for 14 days and 28 days. QXRD analysis was conducted for the various depths of specimens with 5-mm intervals from the carbonation front, and thermogravimetry analysis was also carried out to compare the results from QXRD. To explain the phase profiles from the experiments, a multi-reaction model considering hydration, carbonation, and transportation in the cement matrix was developed. The experimental results of the phase profile demonstrated good agreement with the numerical results. It was confirmed that carbonation with high concentration led to the consumption of anhydrous clinker as well as the occupation of CaCO3 in most of the volume in the skeleton of the cement paste.http://www.sciencedirect.com/science/article/pii/S2214509522000225CarbonationCement pasteProfilingQuantitative X-ray diffraction analysisNumerical simulationPhase assemblage |
| spellingShingle | Jena Jeong Abel Shiferaw Alemu Solmoi Park Hyo Kyoung Lee Gebremicael Liyew Hamidréza Ramézani Vagelis G. Papadakis Hyeong-Ki Kim Phase profiling of carbonated cement paste: Quantitative X-ray diffraction analysis and numerical modeling Case Studies in Construction Materials Carbonation Cement paste Profiling Quantitative X-ray diffraction analysis Numerical simulation Phase assemblage |
| title | Phase profiling of carbonated cement paste: Quantitative X-ray diffraction analysis and numerical modeling |
| title_full | Phase profiling of carbonated cement paste: Quantitative X-ray diffraction analysis and numerical modeling |
| title_fullStr | Phase profiling of carbonated cement paste: Quantitative X-ray diffraction analysis and numerical modeling |
| title_full_unstemmed | Phase profiling of carbonated cement paste: Quantitative X-ray diffraction analysis and numerical modeling |
| title_short | Phase profiling of carbonated cement paste: Quantitative X-ray diffraction analysis and numerical modeling |
| title_sort | phase profiling of carbonated cement paste quantitative x ray diffraction analysis and numerical modeling |
| topic | Carbonation Cement paste Profiling Quantitative X-ray diffraction analysis Numerical simulation Phase assemblage |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522000225 |
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