Document Type : Research Paper
Authors
1 Address: Tehran Province, Tehran, District 22، P5RJ+CMH, Iran
2 دانش آموخته دکتری دانشگاه گرگان
3 استادیار، مهندسی صنایع مبلمان، دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد، ایران
Abstract
Abstract
Laminated Strand Lumber (LSL) is an engineered wood product widely used in construction and furniture industries. This study investigated the effect of adhesive type (phenol-formaldehyde and MDI) and preservative type (nano-zinc oxide, zinc borate, and nano-graphene) at four levels (0, 0.5, 1, and 1.5%) on the resistance of LSL to the subterranean termite Microcerotermes diversus. Specimens were manufactured from beech wood (Fagus orientalis) strands, and termite resistance tests were conducted according to AWPA standards for 21 days. Results showed that all three preservatives significantly reduced weight loss compared to controls. Nano-zinc oxide exhibited the best performance with an average weight loss of 0.91%, followed by zinc borate (1.42%) and nano-graphene (2.12%). Increasing preservative concentration from 0.5% to 1.5% improved weight loss reduction by up to 130% compared to controls. Additionally, specimens manufactured with PF adhesive showed higher resistance than those with MDI. Images confirmed reduced termite presence around nano-zinc oxide-treated specimens. Overall, nano-zinc oxide is recommended as the most effective preservative against termites in LSL manufacturing.
Abstract
Laminated Strand Lumber (LSL) is an engineered wood product widely used in construction and furniture industries. This study investigated the effect of adhesive type (phenol-formaldehyde and MDI) and preservative type (nano-zinc oxide, zinc borate, and nano-graphene) at four levels (0, 0.5, 1, and 1.5%) on the resistance of LSL to the subterranean termite Microcerotermes diversus. Specimens were manufactured from beech wood (Fagus orientalis) strands, and termite resistance tests were conducted according to AWPA standards for 21 days. Results showed that all three preservatives significantly reduced weight loss compared to controls. Nano-zinc oxide exhibited the best performance with an average weight loss of 0.91%, followed by zinc borate (1.42%) and nano-graphene (2.12%). Increasing preservative concentration from 0.5% to 1.5% improved weight loss reduction by up to 130% compared to controls. Additionally, specimens manufactured with PF adhesive showed higher resistance than those with MDI. Images confirmed reduced termite presence around nano-zinc oxide-treated specimens. Overall, nano-zinc oxide is recommended as the most effective preservative against termites in LSL manufacturing.
Abstract
Laminated Strand Lumber (LSL) is an engineered wood product widely used in construction and furniture industries. This study investigated the effect of adhesive type (phenol-formaldehyde and MDI) and preservative type (nano-zinc oxide, zinc borate, and nano-graphene) at four levels (0, 0.5, 1, and 1.5%) on the resistance of LSL to the subterranean termite Microcerotermes diversus. Specimens were manufactured from beech wood (Fagus orientalis) strands, and termite resistance tests were conducted according to AWPA standards for 21 days. Results showed that all three preservatives significantly reduced weight loss compared to controls. Nano-zinc oxide exhibited the best performance with an average weight loss of 0.91%, followed by zinc borate (1.42%) and nano-graphene (2.12%). Increasing preservative concentration from 0.5% to 1.5% improved weight loss reduction by up to 130% compared to controls. Additionally, specimens manufactured with PF adhesive showed higher resistance than those with MDI. Images confirmed reduced termite presence around nano-zinc oxide-treated specimens. Overall, nano-zinc oxide is recommended as the most effective preservative against termites in LSL manufacturing.
Keywords
Main Subjects
)