| 溪洛渡水电站掺PVA纤维混凝土的试验研究及应用 |
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| 引用本文： | 杨富亮. 溪洛渡水电站掺PVA纤维混凝土的试验研究及应用[J]. 云南水力发电, 2011, 27(5): 11-17,40. DOI: 10.3969/j.issn.1006-3951.2011.05.004 |
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| 作者姓名： | 杨富亮 |
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| 作者单位： | 中国长江三峡集团公司溪洛渡试验中心,云南永善,657300 |
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| 摘 要： | 溪洛渡水电站拦河大坝为双曲拱坝，最大坝高285．5m，大坝混凝土抗裂指标要求高，为了提高混凝土的极限拉伸值、自生体积变形性能，进行外掺改性PVA纤维大坝混凝土配合比的试验研究，并在溪洛渡水电站工程成功应用。室内试验研究和对大坝混凝土的抽样检测结果表明，掺改性PVA纤维混凝土可提高28d龄期混凝土极限拉伸值10％以上，相同龄期可减少混凝土自生体积变形收缩约15×10^-6左右，有效的提高了大坝混凝土的抗裂性能指标。
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| 关 键 词： | 溪洛渡水电站 大坝 混凝土配合比 改性PVA纤维 极限拉伸值 自生体积变形 |
Test and Study of Improved PVA Fibre Blended Concrete and Its Application in Xiluodu Hydropower Project |
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| YANG Fu-liang. Test and Study of Improved PVA Fibre Blended Concrete and Its Application in Xiluodu Hydropower Project[J]. Yunnan Water Power, 2011, 27(5): 11-17,40. DOI: 10.3969/j.issn.1006-3951.2011.05.004 |
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| Authors: | YANG Fu-liang |
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| Affiliation: | YANG Fu-liang(Xiluodu Test Centre of China Changjiang River Three Gorges Group Corporation,Yongshan 657300,Yunnan,China) |
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| Abstract: | Xiluodu Hydropower Project has a double-curvature arch dam with maximum height of 285.5m,which sets a high demand on the dam concrete crack resistance.In order to improve the concrete limit tensile elongation and autogenous volume variation,test and study of mix proportion of the improved PVA fibre blended dam concrete were carried out,and the tested concrete has successfully been used in construction of Xiluodu Hydropower Project.The laboratory test results and dam concrete sample test results reveal that ... |
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| Keywords: | Xiluodu Hydropower Project dam concrete mix proportion improved PVA fibre limit tensile elongation autogenous volume deformation |
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