Hydrophobic Calcium Carbonate for Cement Surface
This report describes a novel way to generate a highly effective hydrophobic cement surface via a carbonation route using sodium stearate. Carbonation reaction was carried out at different temperatures to investigate the hydrophobicity and morphology of the calcium carbonate formed with this process...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-12-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/7/12/371 |
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| author | Shashi B. Atla Yi-Hsun Huang James Yang How-Ji Chen Yi-Hao Kuo Chun-Mei Hsu Wen-Chien Lee Chien-Cheng Chen Duen-Wei Hsu Chien-Yen Chen |
| author_facet | Shashi B. Atla Yi-Hsun Huang James Yang How-Ji Chen Yi-Hao Kuo Chun-Mei Hsu Wen-Chien Lee Chien-Cheng Chen Duen-Wei Hsu Chien-Yen Chen |
| author_sort | Shashi B. Atla |
| collection | DOAJ |
| description | This report describes a novel way to generate a highly effective hydrophobic cement surface via a carbonation route using sodium stearate. Carbonation reaction was carried out at different temperatures to investigate the hydrophobicity and morphology of the calcium carbonate formed with this process. With increasing temperatures, the particles changed from irregular shapes to more uniform rod-like structures and then aggregated to form a plate-like formation. The contact angle against water was found to increase with increasing temperature; after 90 °C there was no further increase. The maximum contact angle of 129° was obtained at the temperature of 60 °C. It was also found that carbonation increased the micro hardness of the cement material. The micro hardness was found to be dependent on the morphology of the CaCO3 particles. The rod like structures which caused increased mineral filler produced a material with enhanced strength. The 13C cross polarization magic-angle spinning NMR spectra gave plausible explanation of the interaction of organic-inorganic moieties. |
| first_indexed | 2024-04-11T22:30:56Z |
| format | Article |
| id | doaj.art-2b8be0f9d76249dda5fb704bcaa6dcb3 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T22:30:56Z |
| publishDate | 2017-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-2b8be0f9d76249dda5fb704bcaa6dcb32022-12-22T03:59:23ZengMDPI AGCrystals2073-43522017-12-0171237110.3390/cryst7120371cryst7120371Hydrophobic Calcium Carbonate for Cement SurfaceShashi B. Atla0Yi-Hsun Huang1James Yang2How-Ji Chen3Yi-Hao Kuo4Chun-Mei Hsu5Wen-Chien Lee6Chien-Cheng Chen7Duen-Wei Hsu8Chien-Yen Chen9Department of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Minhsiung, Chiayi County 62102, TaiwanDepartment of Civil Engineering, National Chung Hsing University, 250 Kuo Kuang Road, Taichung 4022, TaiwanDepartment of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Minhsiung, Chiayi County 62102, TaiwanDepartment of Civil Engineering, National Chung Hsing University, 250 Kuo Kuang Road, Taichung 4022, TaiwanDepartment of Civil Engineering, National Chung Hsing University, 250 Kuo Kuang Road, Taichung 4022, TaiwanDepartment of Chemical Engineering, National Chung Cheng University, 168 University Road, Ming-Shung, Chiayi County 62102, TaiwanDepartment of Chemical Engineering, National Chung Cheng University, 168 University Road, Ming-Shung, Chiayi County 62102, TaiwanDepartment of Biotechnology, National Kaohsiung Normal University, No.62 Shenjhong Road, Yanchao Township, Kaohsiung County 82444, TaiwanDepartment of Biotechnology, National Kaohsiung Normal University, No.62 Shenjhong Road, Yanchao Township, Kaohsiung County 82444, TaiwanDepartment of Earth and Environmental Sciences, National Chung Cheng University, 168 University Road, Minhsiung, Chiayi County 62102, TaiwanThis report describes a novel way to generate a highly effective hydrophobic cement surface via a carbonation route using sodium stearate. Carbonation reaction was carried out at different temperatures to investigate the hydrophobicity and morphology of the calcium carbonate formed with this process. With increasing temperatures, the particles changed from irregular shapes to more uniform rod-like structures and then aggregated to form a plate-like formation. The contact angle against water was found to increase with increasing temperature; after 90 °C there was no further increase. The maximum contact angle of 129° was obtained at the temperature of 60 °C. It was also found that carbonation increased the micro hardness of the cement material. The micro hardness was found to be dependent on the morphology of the CaCO3 particles. The rod like structures which caused increased mineral filler produced a material with enhanced strength. The 13C cross polarization magic-angle spinning NMR spectra gave plausible explanation of the interaction of organic-inorganic moieties.https://www.mdpi.com/2073-4352/7/12/371SEMX-ray diffractioncarbonationmicromechanicsCaCO3cement |
| spellingShingle | Shashi B. Atla Yi-Hsun Huang James Yang How-Ji Chen Yi-Hao Kuo Chun-Mei Hsu Wen-Chien Lee Chien-Cheng Chen Duen-Wei Hsu Chien-Yen Chen Hydrophobic Calcium Carbonate for Cement Surface Crystals SEM X-ray diffraction carbonation micromechanics CaCO3 cement |
| title | Hydrophobic Calcium Carbonate for Cement Surface |
| title_full | Hydrophobic Calcium Carbonate for Cement Surface |
| title_fullStr | Hydrophobic Calcium Carbonate for Cement Surface |
| title_full_unstemmed | Hydrophobic Calcium Carbonate for Cement Surface |
| title_short | Hydrophobic Calcium Carbonate for Cement Surface |
| title_sort | hydrophobic calcium carbonate for cement surface |
| topic | SEM X-ray diffraction carbonation micromechanics CaCO3 cement |
| url | https://www.mdpi.com/2073-4352/7/12/371 |
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