Enhanced modeling of moisture equilibrium and transport in cementitious materials under arbitrary temperature and relative humidity history

被引：175

作者：

Ishida, Tetsuya

Maekawa, Koichi

Kishi, Toshiharu

机构：

[1] Univ Tokyo, Dept Civil Engn, Bunkyo Ku, Tokyo, Japan

[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo, Japan

来源：

CEMENT AND CONCRETE RESEARCH | 2007年 / 37卷 / 04期

关键词：

transport properties; drying; microstructure; diffusion; permeability;

D O I：

10.1016/j.cemconres.2006.11.015

中图分类号：

TU [建筑科学];

学科分类号：

0813 [建筑学];

摘要：

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.

引用

页码：565 / 578

页数：14

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