Theoretical modeling and verification of concrete moisture diffusion surface factor

被引：1
|
作者：
Peng Z. [1 ]
Jin N.-G. [1 ]
Jin X.-Y. [1 ]
机构：
[1] Department of Civil Engineering, Zhejiang University
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2010年 / 44卷 / 10期
关键词：
Concrete moisture field; Convective mass transfer; Environmental factor; Moisture diffusion surface factor; Theoretical model;
D O I：
10.3785/j.issn.1008-973X.2010.10.028
中图分类号：
学科分类号：
摘要：
The moisture diffusion surface factor, the key parameter in moisture field forming, was studied in order to analyze the influence of concrete moisture field on the durability, surface shrinkage stress and shrinkage cracks of concrete. The third boundary condition of concrete moisture field was derived considering the pore areas of concrete surface and the pore moisture diffusion coefficient. The concrete surface moisture convection and diffusion processes were simplified as the convective mass transfer of incompressible fluid in one-dimensional flat wall. A theoretical model on the moisture diffusion surface factor of concrete during the curing period was established based on the mass conservation and the flat wall convective mass transfer principle. An approximate solution of the model was provided. Simulation results agreed well with the theoretical model.
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页码：2010 / 2015
页数：5
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