Numerical modeling of hydration driven moisture changes

Title: Numerical modeling of hydration driven moisture changes
Author(s): E.A.B. Koenders, K. van Breugel
Paper category : conference
Book title: International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur
Editor(s): J. Weiss, K. Kovler, J. Marchand, and S. Mindess
Print-ISBN: None
e-ISBN: 2912143926
Publisher: RILEM Publications SARL
Publication year: 2004
Nb references: 11
Language: English

Abstract: Numerical modeling of volume changes in hardening cement-based materials is quite a challenging effort and requires detailed mathematical modeling techniques. In this paper an overview is presented about a promising way to model the moisture flow through porous media, and with this, the associating volume changes. The moisture flow considered to be driven by differences in pore pressures, caused by variations in relative humidity in the empty pore space. Once the moisture moves through the porous system, the cement paste system will respond by either local drying or by local wetting of the porous system. On its turn, this wetting / drying process will manifest itself by internal (micro cracking) or external (shrinkage) volume changes. The ability of modeling these processes, and with this, the applicability of multi-scale modelling techniques will be outlined in this paper. Numerical results will show the potential of numerical modeling of volume changes.

Online publication: 2004-03-25
Classification: Driving Forces
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143926.022