Acetylated solid wood. Laboratory durability test (part 2) and field trials
E P J Beckers, H Militz, M Stevens
Degradation of acetylated beech, pine and poplar by soft rot fungi was related to strength loss in a laboratory test. No strength loss was noticed for poplar acetylated to a weight percent gain (WPG) of more than 11.2% and beech with a WPG of 12.8%. Several field trials were set up to determine the durability of acetylated products in practice. They included a field test to determine the durability of acetylated wood, a field test for acetylated claddings with various paints, a field test for acetylated garden wood, an outdoor exposure of acetylated wood to salt water and of acetylated wood to soil and fresh water contact. In these trials the way of design and shape of end products was considered too. This is of industrial use to minimise waste of (expensive) acetylated wood. Results are discussed.
Keywords: ACETYLATION; DURABILITY; SOFT ROT; FAGUS SYLVATICA; PINUS SYLVESTRIS; POPULUS; PICEA ABIES; FIELD TESTS; STRENGTH LOS