A Study on Conversion Fraction and Carbonation of Pozzolan Blended Concrete through <sup>29</sup>Si MAS NMR Analysis
The object of this paper is to investigate the carbonation resistance of concretes containing different pozzolanic materials. Three concrete mixtures that included fly ash, silica fume, and nanosilica were prepared, and the mixtures were designed to have similar mechanical properties to exclude the...
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MDPI AG
2020-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/19/6855 |
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| author | Jung J. Kim Kwang-Soo Youm Jiho Moon |
| author_facet | Jung J. Kim Kwang-Soo Youm Jiho Moon |
| author_sort | Jung J. Kim |
| collection | DOAJ |
| description | The object of this paper is to investigate the carbonation resistance of concretes containing different pozzolanic materials. Three concrete mixtures that included fly ash, silica fume, and nanosilica were prepared, and the mixtures were designed to have similar mechanical properties to exclude the effect of mechanical properties on the carbonation. These pozzolanic materials in concretes have different silicate contents and grain size distributions. Rapid carbonation tests were conducted to investigate the durability of pozzolan blended concretes for carbonation, and the carbonation depth was measured at one, two, four, and eight weeks after 28-day water curing. <sup>29</sup>Si NMR (nuclear magnetic resonance) experiments were performed, and the conversion fractions for each pozzolan blended concrete were extracted. The degree of carbonation was also assessed based on the Nuclear magnetic resonance (NMR) results. |
| first_indexed | 2024-03-10T15:58:05Z |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T15:58:05Z |
| publishDate | 2020-09-01 |
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| spelling | doaj.art-a8e5093d316d400f86fb99ce9a2647c42023-11-20T15:33:17ZengMDPI AGApplied Sciences2076-34172020-09-011019685510.3390/app10196855A Study on Conversion Fraction and Carbonation of Pozzolan Blended Concrete through <sup>29</sup>Si MAS NMR AnalysisJung J. Kim0Kwang-Soo Youm1Jiho Moon2Department of Civil Engineering, Kyungnam University, Changwon-si 51767, KoreaInfra Structure Team, Technical Division, GS E&C, Seoul 03159, KoreaDepartment of Civil Engineering, Kangwon National University, Chuncheon-si 24341, KoreaThe object of this paper is to investigate the carbonation resistance of concretes containing different pozzolanic materials. Three concrete mixtures that included fly ash, silica fume, and nanosilica were prepared, and the mixtures were designed to have similar mechanical properties to exclude the effect of mechanical properties on the carbonation. These pozzolanic materials in concretes have different silicate contents and grain size distributions. Rapid carbonation tests were conducted to investigate the durability of pozzolan blended concretes for carbonation, and the carbonation depth was measured at one, two, four, and eight weeks after 28-day water curing. <sup>29</sup>Si NMR (nuclear magnetic resonance) experiments were performed, and the conversion fractions for each pozzolan blended concrete were extracted. The degree of carbonation was also assessed based on the Nuclear magnetic resonance (NMR) results.https://www.mdpi.com/2076-3417/10/19/6855carbonationsilica fumenanosilicapozzolanic reaction<sup>29</sup>Si MAS NMR |
| spellingShingle | Jung J. Kim Kwang-Soo Youm Jiho Moon A Study on Conversion Fraction and Carbonation of Pozzolan Blended Concrete through <sup>29</sup>Si MAS NMR Analysis Applied Sciences carbonation silica fume nanosilica pozzolanic reaction <sup>29</sup>Si MAS NMR |
| title | A Study on Conversion Fraction and Carbonation of Pozzolan Blended Concrete through <sup>29</sup>Si MAS NMR Analysis |
| title_full | A Study on Conversion Fraction and Carbonation of Pozzolan Blended Concrete through <sup>29</sup>Si MAS NMR Analysis |
| title_fullStr | A Study on Conversion Fraction and Carbonation of Pozzolan Blended Concrete through <sup>29</sup>Si MAS NMR Analysis |
| title_full_unstemmed | A Study on Conversion Fraction and Carbonation of Pozzolan Blended Concrete through <sup>29</sup>Si MAS NMR Analysis |
| title_short | A Study on Conversion Fraction and Carbonation of Pozzolan Blended Concrete through <sup>29</sup>Si MAS NMR Analysis |
| title_sort | study on conversion fraction and carbonation of pozzolan blended concrete through sup 29 sup si mas nmr analysis |
| topic | carbonation silica fume nanosilica pozzolanic reaction <sup>29</sup>Si MAS NMR |
| url | https://www.mdpi.com/2076-3417/10/19/6855 |
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