UNSATURATED WATER-FLOW WITHIN POROUS MATERIALS OBSERVED BY NMR IMAGING
UNSATURATED WATER-FLOW WITHIN POROUS MATERIALS OBSERVED BY NMR IMAGING
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DOI：
10.1038/281056a0
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发表时间：
1979-01-01
期刊：
影响因子：
64.8
通讯作者：
MOORE, WS
中科院分区：
文献类型：
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作者：
GUMMERSON, RJ;HALL, C;MOORE, WS
各种多孔材料的湿润、干燥和渗透过程对土壤科学和农业、建筑科学和化学工程特别感兴趣。直接实验研究的非饱和流在这种材料是阻碍了与精确检测其内部的水含量分布的变化的困难。在土壤的实验室工作中，重量取样被广泛使用1。然而，这是一种干扰水流过程的破坏性方法，并且在任何情况下都不容易准确地应用于刚性材料，如渗透性岩石，陶瓷和建筑材料，γ射线衰减是实验室中唯一建立的非破坏性仪器方法2，3。我们报告的第一次使用的核磁共振（NMR）成像技术来监测的内部水含量分布在几个多孔无机材料在毛细管流入的动态。
Wetting, drying and permeation processes in various porous materials are of special interest to soil science and agriculture, building science and chemical engineering. Direct experimental study of unsaturated flow within such materials is hampered by the difficulty of detecting with precision changes in their internal water content distributions. In laboratory work on soils gravimetric sampling is widely used1. However, this is a destructive method which interferes with water flow processes and in any case is not easy to apply accurately to rigid materials such as permeable rocks, ceramics and building materials,γ-ray attenuation is the only established non-destructive instrumental method in laboratory use2,3. We report the first use of a nuclear magnetic resonance (NMR) imaging technique to monitor the dynamics of the internal water content distribution in several porous inorganic materials during capillary inflow.