Deformation properties of Finnish spruce and pine wood in tangential and radial directions in association to high temperature drying Part II. Experimental results under constant conditions (viscoelastic creep)

Picea abies

) and Scots pine (Pinus sylvestris) wood under conditions relevant in the high temperature drying process. This paper reports on the experimental results obtained concerning creep in tension under constant conditions, primarily in wet (saturated, green) state at temperatures 95 °C–125 °C. The results are compared to some other researchers' measurements in a trial of the applicability of the time–temperature–moisture-content superposition principle. Based on these results, a master curve is determined by curve-fitting for use in practical calculation of the elastic and viscoelastic compliance in different conditions.