| 水泥/掺合料胶凝材料体系抗硫酸盐侵蚀性能研究 |
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| 引用本文： | 罗帅,邢锋,董必钦.水泥/掺合料胶凝材料体系抗硫酸盐侵蚀性能研究[J].混凝土,2007(6):68-70. |
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| 作者姓名： | 罗帅 邢锋 董必钦 |
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| 作者单位： | 深圳大学土木工程系深圳市土木工程耐久性重点试验室,深圳518060;深圳大学土木工程系深圳市土木工程耐久性重点试验室,深圳518060;深圳大学土木工程系深圳市土木工程耐久性重点试验室,深圳518060 |
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| 基金项目： | 国家自然科学基金
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广东省自然科学基金 |
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| 摘 要： | 参考ASTM C1012-04测试方法研究硫酸盐溶液浸泡后几种胶凝材料体系砂浆试件的线长度变化,探讨水泥砂浆受硫酸盐侵蚀后的体积膨胀规律;采用XRD分析,揭示其侵蚀机理.试验结果表明,所采用的掺合料及掺加方式配制的水泥砂浆在硫酸盐溶液侵蚀下,出现其线长度不断增长的现象,砂浆试件内部膨胀性产物-钙矾石和石膏形成,但未掺加任何掺合料的砂浆的线长度在21周内变化相对较小.
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| 关 键 词： | 偏高岭土 粉煤灰 矿渣 硫酸盐侵蚀 膨胀率 |
| 文章编号： | 1002-3550-（2007）06-0068-03 |
| 修稿时间： | 2007-01-25 |
Study on sulfate resistance of cementitious materials |
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| LUO Shuai,XING Feng,DONG Bi-qin.Study on sulfate resistance of cementitious materials[J].Concrete,2007(6):68-70. |
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| Authors: | LUO Shuai XING Feng DONG Bi-qin |
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| Affiliation: | The Key Lab o f Civil Engineering Durability of Shenzhen, The Department of Civil Engineering, Shenzhen University, Shenzhen518060, China |
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| Abstract: | This research use the ASTM C1012-04 to test the string length change of four related kinds of cementing material systems in sulfate solution;and obtained the volume expanding rules of these four cementing material systems after been corrupted by the sulfate environment.The corrupt mechanism is investigated by XRD analysis.The result shows that: the admixture and the adoptive method cannot confect the sulfate solution counteracted,and the string length increased steadily,some ettringite and gypsum were detected in the samples by XRD.It is funny that the control sample shows the lowest string longth increasement. |
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| Keywords: | metakaolin fly ash slag sulfate corruption expansion |
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