Procedure |
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Choose the wood batch A pine batch was chosen with no visible signs of having been burned in forest fires. | |
Selection of samples The selected samples showed no heartwood in order to use only the sapwood in the treatment and the wood were stored in a room with controlled environmental conditions for dehydration to stabilize the weight. | |
Marking of samples The samples were then randomized to be allocated to each treatment and marked with numbering puncture. | |
Cutting of samples They were cut into fractions 21.2 × 4.7 × 4.7 cm. | |
Weighing The weighing of each sample was carried out immediately before treatment and after treatment to calculate the absorption of the solution and retention of the preservative. | |
Treatment by immersion The treatment of the samples was performed according to the manufacturer’s instructions (time, concentration). | |
Vacuum treatment The treatment of the samples was performed according to the manufacturer’s instructions (time, concentration) at a negative pressure of 0.92 bar. | |
Fragmentation of the samples The samples after dehydration in a controlled atmosphere were fragmented using a chisel and hammer to be received in the mill. | |
milling The fragmented samples were grinded into particles having the average size of 1 mm2. The mill was cleaned of particles with compressed air spray and passed softwood (untreated) between the milling of each sample. | |
Packaging of samples The samples were packaged and identified immediately after grinding. |