| 氮气吸附法测得的混凝土微观孔结构 |
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| 引用本文： | 刘军,邢锋,董必钦.氮气吸附法测得的混凝土微观孔结构[J].四川建筑科学研究,2009,35(4). |
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| 作者姓名： | 刘军 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,广东,深圳,518060 |
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| 基金项目： | 国家自然基金项目重点项目--混凝土结构耐久性及其对策的基础研究，教育部新世纪优秀人才支持计划(NCET-05-0748)深圳大学科研启动基金资助项目 |
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| 摘 要： | 采用不同水灰比的混凝土试样,用氮气吸附法测量了混凝土的微观孔结构.结果表明,不同水灰比试样孔的峰值出现在20nm左右,且随着水灰比的下降,峰值减小,三种水灰比试样孔径分布连续,孔体积的变化基本一致,平均孔径和水灰比基本呈线性关系.
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| 关 键 词： | 氮气吸附法 混凝土 孔结构 孔径 |
The method of nitrogen adsorption measured pore structure of concrete |
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| LIU Jun,XING Feng,DONG Biqin.The method of nitrogen adsorption measured pore structure of concrete[J].Building Science Research of Sichuan,2009,35(4). |
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| Authors: | LIU Jun XING Feng DONG Biqin |
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| Affiliation: | LIU Jun,XING Feng,DONG Biqin(The Key Lab.of Civil Engineering Durability of Shenzhen,The Department of Civil Engineering,Shenzhen University,Shenzhen 518060,China) |
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| Abstract: | The concrete samples is different water-cement ratio,using nitrogen absorption measured by the micro-concrete structure,results showed that: The different water ratio sample port's peak value appears about 20 nm,and along with the water ratio drop,the peak value reduces.Three water-cement ratio for the sample pore size distribution,pore volume changes in the basic agreement,with an average pore size,BET Surface Area and water-cement ratio for a linear relationship. |
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| Keywords: | nitrogen adsorption concrete pore structure pore width |
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