Bestimmung des Transportkoeffizienten für die Weiterverteilung aus einfachen Trocknungsversuchen und rechnerischer Anpassung / Approximate Determination of the Transport Coefficients for Moisture Redistribution from a simple Drying Experiment and Numerical Adaptation.

To reach a broad application of computation methods for the calculation of the moisture balance in building components, simplified methods for the determination of the necessary hygric material properties are required. Such an approximate method has already been developed for the determination of the transport coefficients for liquid capillary absorption. The drying process mostly shows significantly smaller liquid transport coefficients. A new method is presented to determine approximately these coefficients from results of a simple drying experiment. A comparison of calculated results using this approximation and exactly determined coefficients shows only moderate and acceptable deviations from reality.