WOOD RESEARCH Volume 70, Number 3, 2025
VERONIKA KVORKOVÁ, IGOR WACHTER, TOMÁŠ ŠTEFKO, PETER RANTUCH, DÁVID KOPINEC, and JOZEF MARTINKA

THE IMPACT OF ACRYLIC RESIN ON THE PERFORMANCE OF SPRUCE AND FIR WOOD: THE STUDY OF HARDNESS, WATER ABSORPTION, AND NATURAL WEATHERING

This study investigated the effects of acrylic resin stabilization on the properties of Norway spruce (Picea abies, (L.) H. Karst) and European silverfir (Abies alba, Mill) wood. The primary focus was on enhancing durability by improving hardness, water resistance, and UV resistance. Results demonstrated a significant increase in hardness (D-Shore) for both species, with spruce exhibiting a 72.3% improvement and fir showing a 16.5% enhancement. Water absorption tests revealed a substantial decrease in water uptake for stabilized samples compared to untreated controls. However, colorimetric analysis indicated a slight decrease in UV resistance for stabilized samples, likely attributed to the lack of UV stabilizers within the acrylic resin.

WOOD RESEARCH Volume 63, Number 3, 2018
Tomy Listyanto

Wood quality of Paraserianthes falcataria L. nielsen syn wood from three year rotation of harvesting for construction application

Paraserianthes falcataria is fast growing species that considered being potential lumber for construction application. The aim was to evaluate the effect of year rotation of harvesting on quality of Paraserianthes falcataria wood for construction application. Nine trees of Paraserianthes falcataria with harvesting rotation of 5, 7, and 9 years, were harvested from the private forest. Moisture content, specific gravity, shrinkage, MOE, MOR, and compressive strength parallel to grain were measured for wood quality parameters in accordance to JIS Z 2101. Durability test were conducted against dry wood termite (Criptotermes cynocephalus Light). The results showed that year harvesting of Paraserianthes falcataria influence significantly on specific gravity, and compressive strength parallels to grain. Paraserianthes falcataria wood is classified into strength class III-IV, which is properly used for light construction. To obtain optimum quality for construction purposes, Paraserianthes falcataria tree is recommended to be harvested in minimum harvesting rotation of 7 years.