FUNDAMENTAL RESEARCH ON ISOTHERM CAPILLARY ABSORPTION OF CONCRETE BY NEUTRON RADIOGRAPHY
FUNDAMENTAL RESEARCH ON ISOTHERM CAPILLARY ABSORPTION OF CONCRETE BY NEUTRON RADIOGRAPHY
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DOI：
10.3130/aijs.78.1339
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Kanematsu;N. Tsuchiya;T. Noguchi
中科院分区：
文献类型：
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作者：
M. Kanematsu;N. Tsuchiya;T. Noguchi
利用中子照相技术对混凝土的吸水过程进行了研究，以确定骨料对混凝土局部水行为的影响。本文首先对前人研究中发展起来的热中子照相定量水方法进行了综述。用该方法研究了含人造柱状骨料的混凝土试件的吸水过程。利用获得的水力扩散系数，非定常水扩散分析捕捉到了实验观察到的集料周围的水分分布。结果表明，骨料的几何布局可以很好地解释其水行为。
This study focuses on the absorption process of concrete to determine the influence of aggregates on the local water behavior in concrete, by using neutron radiography. At first, water quantification method by using thermal neutron radiography is summarized which is developed in previous researches. With this method, the water absorption process was examined in concrete specimens containing artificial cylindrical aggregates. Using the obtained hydraulic diffusivity, an unsteady water diffusion analysis captured the experimentally observed water distribution around the aggregates. The result shows that the water behavior can be well explained by the geometric layout of the aggregates.