Enhanced modeling of moisture equilibrium and transport in cementitious materials under arbitrary temperature and relative humidity history
Enhanced modeling of moisture equilibrium and transport in cementitious materials under arbitrary temperature and relative humidity history
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DOI：
10.1016/j.cemconres.2006.11.015
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发表时间：
2007-04-01
影响因子：
11.4
通讯作者：
Kishi, Toshiharu
中科院分区：
文献类型：
--
作者：
Ishida, Tetsuya;Maekawa, Koichi;Kishi, Toshiharu
本文主要研究了在不同温度和相对湿度条件下，水分在纳米-宏观尺度孔隙中的分散行为。作者制定了液相和气相之间的平衡关系和孔隙压力，蒸汽压力和温度梯度驱动的水分通量。此外，为了揭示饱和-湿度路径中的温度敏感性，分别用乙醇测量了液体和层间水。在实验的基础上，提出了一个修正的水分等温线滞后模型。实验数据验证表明，该方法可以模拟不同温度条件下的水分行为。(c)2006爱思唯尔有限公司保留所有权利。
This paper focuses on behaviors of moisture dispersed in nano-macro scale pores under various temperature and relative humidity conditions. The authors formulated an equilibrium relationship between liquid and vapor phases and a moisture flux driven by pore pressure, vapor pressure and temperature gradients. In addition, liquid and interlayer water were measured separately by ethanol in order to reveal each temperature sensitivity in saturation-humidity paths. Based on the experiments, a modified hysteresis model for moisture isotherm was proposed. Verifications with experimental data showed that the proposed method can simulate moisture behaviors under various temperature conditions. (c) 2006 Elsevier Ltd. All rights reserved.