| 混凝土的极限拉伸值研究综述 |
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| 引用本文： | 刘数华 方坤河. 混凝土的极限拉伸值研究综述[J]. 福建建材, 2007, 0(1): 14-16 |
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| 作者姓名： | 刘数华 方坤河 |
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| 作者单位： | [1]清华大学土木工程系建筑材料研究所,北京100084 [2]武汉大学水资源与水利工程科学国家重点实验室,湖北武汉430072 |
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| 摘 要： | 为了防治混凝土发生裂缝，许多坝工等大体积混凝土在设计中提出抗裂要求，以极限拉伸值作为混凝土抗裂能力的指标。本文讨论了影响混凝土极限拉伸值的测试方法、影响因素及提高措施。可以选用掺掺合料、外加剂、纤维和石粉的方法来提高混凝土的极限拉伸值，从而提高混凝土抗裂性能，为工程实践提供参考。
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| 关 键 词： | 混凝土 极限拉伸值 抗裂性能 |
Summarization of Research on Ultimate Tension of Concrete |
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| LIU Shu-hua, FANG Kun-he. Summarization of Research on Ultimate Tension of Concrete[J]. , 2007, 0(1): 14-16 |
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| Authors: | LIU Shu-hua FANG Kun-he |
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| Affiliation: | 1. Institute of building Materials,Department of Civil Engineering,Tsinghua University,Beijing, 100084; 2. State Key Laboratory of Water Resource and Hydropower Engineering Science, Wuhan University, Wuhan, 430072 |
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| Abstract: | In order to prevent the crack of concrete, many mass concrete in dams takes ultimate tension as the index of crack resistance. In this paper, we analysis the testing technique, influencing factors and measures of improving it. We can improve the ultimate tension of concrete by adding admixtures, additions, fibres and stone powers, which can improve crack resistance of concrete and can be used as reference in project. |
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| Keywords: | Concrete ultimate tension crack resistance |
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