Moisture storage and water uptake experimental data for three-layer and five-layer Cross Laminated Timber specimens

This paper reports the results of an experimental campaign carried out on a series of three-layer and five-layer Cross Laminated Timber (CLT) specimens, aimed at measuring their water absorption coefficient and their moisture storage function. These data are very important in the transient Heat, Air and Moisture Transfer (HAMT) simulation of CLT-based walls, but few reliable data are currently available to modellers, also showing a certain dispersion. Based on the comparison of the experimental results with available literature data, and on a simulation exercise, the paper allows understanding the effect of reliable material properties on the results of transient HAMT simulations for wood-based assemblies.