Comparison the Effect of Celcure and Nano Silveron Poplar Wood Durability Against Brown rot

In this study, the effect of the brown rot fungus (coniophoraputeana) on the Durability of poplar (populous deltoids)heartwood in Natural State and Treated with ACC (Acid copper chromate) and Nano silver has been evaluated. ACC is a kind of water borne preservatives that was used in this study for treating specimens with 0.5% and 1%and nonosilver with 800ppm concentration. In conducting the mentioned evaluation,kolleschale’s method according to DIN 52176 and EN113standard were used in completely randomized block design.Eighty Specimens were contaminated with cultured fungus for fourteen weeks under the following condition (22 c o , 75% relative humidity). After this period, weight reduction, compressive strength(parallel to grain) and hardness of specimens were tested. Results have shown that the effect of Celcure and Nanosilver on durability of populous deltoids was positive .According to Duncan’s multiple range test, the weight reduction difference between treated and nontreated samples was significant at the 0.05 level and the average of weight reduction of control samples was measured more than treated ones, so that according to Findlay 1967 classify this type was promoted from completely non durability to less durability for Nanosilver and 0.5%Celcure treated and moderately durable for1%Celcure treated . Compressive strength (parallel to grain) and hardness of treated samples were higher than control ones and were significant difference between them.