کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6717658 | 1428748 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Classification of uncoated plywood based on moisture dynamics
ترجمه فارسی عنوان
طبقه بندی تخته سه لا های پوشش داده شده براساس پویایی رطوبت
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کلمات کلیدی
تخته سه لا پوشش داده نشده دینامیک رطوبت، تست آزمایشگاهی، قرار گرفتن در معرض خارجی، طبقه بندی، اندازه گیری رطوبت مداوم،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
Moisture has a significant influence on the mechanical and physical properties and on the biological durability of wood and wood based materials. As plywood is commonly used as a building material for outdoor applications knowledge regarding its moisture behaviour is of utmost importance. The aim of this research is to model water accumulation in plywood panels in terms of their basic characteristics and in-service moisture conditions. Therefore, moisture dynamics of 29 uncoated plywood types consisting of different wood species, adhesives and layering were evaluated using a simple laboratory water floating test and an outdoor continuous moisture measurement set-up. A significant correlation was found between laboratory and field test results. By means of regression analysis the material characteristics affecting the moisture dynamics of plywood were evaluated. The most influential parameters were wood species, glue type and thickness of the top veneer. Limit values for the water left in the plywood specimen after 72â¯h absorption and subsequent 72â¯h desorption, the residual moisture content (rm72), were calculated as to develop a classification tool for plywood. Based on such a classification tool some recommendations for uncoated plywood regarding end use and service life were drafted. Enhanced performance should be obtained by means of wood preservation or by reducing its residual moisture by applying a coating or by an optimal selection of adhesive, wood species and top veneer thickness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 158, 15 January 2018, Pages 814-822
Journal: Construction and Building Materials - Volume 158, 15 January 2018, Pages 814-822
نویسندگان
Imke De Windt, Wanzhao Li, Jan Van den Bulcke, Joris Van Acker,