| 活性粉末混凝土核磁共振实验研究 |
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| 引用本文： | 粱小燕,阎贵平.活性粉末混凝土核磁共振实验研究[J].科学技术与工程,2005,5(11):752-754. |
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| 作者姓名： | 粱小燕 阎贵平 |
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| 作者单位： | 北京交通大学土建学院,北京,100044;北京交通大学土建学院,北京,100044 |
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| 基金项目： | 铁道部基金(TJD03010)资助 |
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| 摘 要： | 通过质子的磁性弛豫法,研究了三种活性粉末混凝土孔隙分布的离散、不规则特征,评价了每一种配比表面的不规则尺寸,同时揭示了孔隙的层次。29Si核磁共振方法(NMR)验证了不规则尺寸、水泥骨料填充率以及硅灰活性之间的联系。
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| 关 键 词： | 活性粉末混凝土 孔径分布 核磁共振 |
| 文章编号： | 1671-1815(2005)11-0752-03 |
| 修稿时间： | 2005年1月26日 |
Analysis of Microporosity of Reactive Powder Concrete by Nuclear Magnetic Resonance |
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| Liang Xiaoyan,YAN Guiping.Analysis of Microporosity of Reactive Powder Concrete by Nuclear Magnetic Resonance[J].Science Technology and Engineering,2005,5(11):752-754. |
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| Authors: | Liang Xiaoyan YAN Guiping |
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| Abstract: | The pore size distribution in three reactive powder concrete formulations has been studied by nuclear magnetic relaxation of protons. Confirming the discrete and fractal features of the distribution for concrete,each formulation is assessed a surface fractal dimension, which reveals the hierarchy of pores. The 29Si nuclear magnetic resonance (NMR) evidences a dependence between this dimension and both the filling ratio of cement grains and the reactivity of silica fume. |
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| Keywords: | reactive powder concrete pore size distribution nuclear magnetic resonance |
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