| C30高性能泵送混凝土抗硫酸盐侵蚀耐久性研究 |
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| 引用本文： | 包乃文,杨树才,董朝文,陈锁忠.C30高性能泵送混凝土抗硫酸盐侵蚀耐久性研究[J].城市轨道交通研究,2005,8(6):43-46. |
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| 作者姓名： | 包乃文 杨树才 董朝文 陈锁忠 |
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| 作者单位： | 南京市地下铁道工程建设指挥部,210008,南京;南京市地下铁道工程建设指挥部,210008,南京;南京市地下铁道工程建设指挥部,210008,南京;南京市地下铁道工程建设指挥部,210008,南京 |
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| 摘 要： | 配制与南京地铁所用混凝土配合比相对应的砂浆,测定不同水胶比、不同Na2SO4浓度、不同掺合料、不同试验条件下的砂浆耐久性指标,分析其规律性,进行归一化处理,得出水胶比为0.38的砂浆抗折强度和龄期的关系模型。进而建立混凝土耐久寿命预测数学模型,并利用该模型进行南京地铁高性能泵送混凝土的耐久寿命预测。研究表明,该工程选用的水胶比为0.38的C30高性能泵送混凝土具有很强的抗硫酸盐侵蚀能力。
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| 关 键 词： | 泵送混凝土 硫酸盐侵蚀 耐久性 |
| 收稿时间： | 2005-07-14 |
| 修稿时间： | 2005年7月14日 |
Anti-sulphate Erosion Durability of C30 High Performance Pumping Concrete |
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| Bao Naiwen,Yang Shucai,Dong Chaowen,Chen Suozhong.Anti-sulphate Erosion Durability of C30 High Performance Pumping Concrete[J].Urban Mass Transit,2005,8(6):43-46. |
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| Authors: | Bao Naiwen Yang Shucai Dong Chaowen Chen Suozhong |
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| Institution: | Constructional Headquarters of Nanjing Metro Engineering, 210008, Nanjing, China |
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| Abstract: | The cement mortar was made to match with the concrete mixing proportion in Nanjing Metro,and the durability index of concrete was measured in different water cement ratio,density of Na_2SO_4,mineral mixture and experiment conditions.This paper analyzes and deals with the durability of concrete through establishing a mathematical model between the folding strengths,forecasting the life of high performance concrete in Nanjing Metro.By using the DSC and SEM methods,this paper holds C30 high performance pumping concrete has a very strong anti-sulphate erosion capability. |
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| Keywords: | pumping concrete sulphate erosion durability |
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