Wood Protection from Fungal Decay with Amine Copper Quat (ACQ) Preservative Treatment

This study investigates the effectiveness of Amine Copper Quat (ACQ) in preserving and maintaining the structure of wood from fungal decay under high decay hazard condition created in the laboratory. Three species of wood; Engkabang jantong (Shorea macrophylla), Acacia (Acacia mangillm), and rubberwood (Hel'ea brasiliensis) were treated with ACQ at different retentions (0.22% m/m Cu, 0.11 % m/m Cu, 0.55% mlm Cu, 0%) and 5.6 kg/m) CCA (for reference) by vacuum pressure method to detennine the resistance against fungal decay. Two species of fungi used were CoriolliS versicolollr and Pycnoporus sanguineus. Evaluation based on the fungal decomposition rates after 3 months the wood blocks (each 2 x I x 2 cm long) were exposed to the fungi. All treated wood blocks showed significant (P