initial condition
initial condition
What value for RH, shall I input in the initial conditions for concrete C12/15, EPS, Exterior plaster 1 of 4
-
Daniel
- WUFI SupportTeam IBP
- Posts: 134
- Joined: Tue Jul 19, 2005 2:50 am -1100
- Location: Fraunhofer IBP, Holzkirchen
- Contact:
initial moisture content
The initial water content normally depends on the situation (new, old, renovation).
New concrete is close to the free saturation but values around 95 % seem to be reasonable after hydration of the conrete. New EPS should be mor or less dry (but at the default initial 80 % RH the water content is still very low). Renders and plasters can be free saturated at the beginning - they should dry out within a few days or weeks.
"Old" materials have an equilibrium moisture content according to climate and operation - this can be found by the help of a simulation until reaching the dynamic equilibrium.
Daniel
New concrete is close to the free saturation but values around 95 % seem to be reasonable after hydration of the conrete. New EPS should be mor or less dry (but at the default initial 80 % RH the water content is still very low). Renders and plasters can be free saturated at the beginning - they should dry out within a few days or weeks.
"Old" materials have an equilibrium moisture content according to climate and operation - this can be found by the help of a simulation until reaching the dynamic equilibrium.
Daniel
Dr.-Ing. Daniel Zirkelbach, Deputy Head of Department Hygrothermics, IBP Holzkirchen