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



Title: Enhanced modeling of moisture equilibrium and transport in cementitious materials under arbitrary temperature and relative humidity history
Author(s): T. Ishida, K. Maekawa, T. Kishi
Paper category : conference
Book title: International RILEM Symposium on Concrete Modelling - ConMod '08
Editor(s): E. Schlangen and G. De Schutter
Print-ISBN: 978-2-35158-060-8
e-ISBN: 978-2-35158-076-9
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 447 - 454
Total Pages: 8
Nb references: 8
Language: English


Abstract: 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 water was measured by ethanol in order to reveal 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.


Online publication: 2009-06-15
Publication type : full_text
Public price (Euros): 0.00