The Sulphate Effect on Lijiaxia Concrete Dam (China) Gallery
The concrete degradation is one of the most serious problems for a dam construct during the normal operation, which determines the dam service life. Hence, it is very important to reduce the extent of the dam concrete degradation for the safety of the dam normal operation. Here, Lijiaxia hydroelectr...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2017/8698759 |
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| author | Xufen Zhu Ji Li Yi Zhang Hanzhou Song Hu Zheng |
| author_facet | Xufen Zhu Ji Li Yi Zhang Hanzhou Song Hu Zheng |
| author_sort | Xufen Zhu |
| collection | DOAJ |
| description | The concrete degradation is one of the most serious problems for a dam construct during the normal operation, which determines the dam service life. Hence, it is very important to reduce the extent of the dam concrete degradation for the safety of the dam normal operation. Here, Lijiaxia hydroelectric station is taken as an example, and a comprehensive method to assess the sulphate effect on dam gallery is proposed. Eleven samples in total were taken from three difference locations by the drill bore. The microstructural investigations including X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive spectroscopy (EDS) were conducted to assess the sulphate attack and the degradation degree. Meanwhile, the water chemical analysis was applied to reveal the mechanism of concrete degradation. The experimental and analysis results indicate that the concrete degradation degree varies with the location of the samples. The components of the concrete change and the content of SO3 increase dramatically during degradation. Moreover, the mineral facies of the concrete change correspondingly, with the cement paste substituted by the calcite, calcium vitriol, and gypsum. The reinforcement and precaution measures are suggested based on the results of the degradation assessment. |
| format | Article |
| id | doaj-art-15c73945beaa45fcb083967a4c91b526 |
| institution | OA Journals |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-15c73945beaa45fcb083967a4c91b5262025-08-20T02:02:40ZengWileyJournal of Chemistry2090-90632090-90712017-01-01201710.1155/2017/86987598698759The Sulphate Effect on Lijiaxia Concrete Dam (China) GalleryXufen Zhu0Ji Li1Yi Zhang2Hanzhou Song3Hu Zheng4School of Earth Science and Engineering, Hohai University, Nanjing 210098, ChinaYellow River Upstream Hydropower Limited Liability Company, Xining 810008, ChinaYellow River Upstream Hydropower Limited Liability Company, Xining 810008, ChinaSchool of Earth Science and Engineering, Hohai University, Nanjing 210098, ChinaSchool of Earth Science and Engineering, Hohai University, Nanjing 210098, ChinaThe concrete degradation is one of the most serious problems for a dam construct during the normal operation, which determines the dam service life. Hence, it is very important to reduce the extent of the dam concrete degradation for the safety of the dam normal operation. Here, Lijiaxia hydroelectric station is taken as an example, and a comprehensive method to assess the sulphate effect on dam gallery is proposed. Eleven samples in total were taken from three difference locations by the drill bore. The microstructural investigations including X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive spectroscopy (EDS) were conducted to assess the sulphate attack and the degradation degree. Meanwhile, the water chemical analysis was applied to reveal the mechanism of concrete degradation. The experimental and analysis results indicate that the concrete degradation degree varies with the location of the samples. The components of the concrete change and the content of SO3 increase dramatically during degradation. Moreover, the mineral facies of the concrete change correspondingly, with the cement paste substituted by the calcite, calcium vitriol, and gypsum. The reinforcement and precaution measures are suggested based on the results of the degradation assessment.http://dx.doi.org/10.1155/2017/8698759 |
| spellingShingle | Xufen Zhu Ji Li Yi Zhang Hanzhou Song Hu Zheng The Sulphate Effect on Lijiaxia Concrete Dam (China) Gallery Journal of Chemistry |
| title | The Sulphate Effect on Lijiaxia Concrete Dam (China) Gallery |
| title_full | The Sulphate Effect on Lijiaxia Concrete Dam (China) Gallery |
| title_fullStr | The Sulphate Effect on Lijiaxia Concrete Dam (China) Gallery |
| title_full_unstemmed | The Sulphate Effect on Lijiaxia Concrete Dam (China) Gallery |
| title_short | The Sulphate Effect on Lijiaxia Concrete Dam (China) Gallery |
| title_sort | sulphate effect on lijiaxia concrete dam china gallery |
| url | http://dx.doi.org/10.1155/2017/8698759 |
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