WOOD RESEARCH Volume 61, Number 1, 2016
Linda Makovická Osvaldová, Stanislava Gašpercová, PATRIK MITRENGA, and Anton Osvald

The influence of density of test specimens on the quality assessment of retarding effects of fire retardants

Test methods evaluating wood flame retardant efficiency are comprised of a parameter which is often considered to be an evaluation criterion and its calculation includes the weight of the test specimen or takes into account the change of its weight during the test. In this case, the overall result may be affected not only by the weight of the test specimens, but also by their density. Our aim is to observe the influence of density while evaluating the efficiency of wood flame retardants.

WOOD RESEARCH Volume 62, Number 4, 2017
Anton Osvald and Milan Gaff

Effect of thermal modification on flameless combustion of spruce wood

The paper deals with the effect of heat treatment of spruce wood (Picea abies (L) Karst.) at the temperatures of 160°C, 180°C and 210°C – on the change of properties that characterize its relation to fire and burning,in particular in the phase called flameless combustion. A test method, which is sufficiently sensitive to monitor these changes, has been used for the evaluation of these changes. The results show that thermally modified spruce wood has positive assessment even in this regard.