Abstract
This study evaluated physical and mechanical properties of experimental strandboard panels with random flake alignment manufactured from eastern redcedar (Juniperus virginiana L.) logs. Panels were made at two density levels of 0.65 g/cm3 and 0.78 g/cm3 using phenol formaldehyde adhesive applied at a rate of 8%. Mechanical properties including modulus of elasticity and modulus of rupture, and internal bond strength of the panels in addition to their thickness swelling characteristics were evaluated. As expected, mechanical properties of the samples improved with increasing panel density. Thickness swelling of the samples for 2- and 24-h water soaking test ranged from 6.32% to 18.41%. Both physical and mechanical properties of the panels showed acceptable results, comparable to those found in past studies using other species to manufacture similar types of product. Based on initial findings of this study it appears that eastern redcedar, which is an under-utilized invasive resource, has potential as a raw material for structural panel manufacture.
Highlights
Strand type composite panels such as oriented strandboard (OSB) are one of the engineered woodbased products most commonly used for structural purposes in construction, especially in the NorthAmerican residential sector
Based on initial findings of this study it appears that eastern redcedar, which is an under-utilized invasive resource, has potential as a raw material for structural panel manufacture
Structural panel products with randomly distributed strands were the predecessors of OSB
Summary
Strand type composite panels such as oriented strandboard (OSB) are one of the engineered woodbased products most commonly used for structural purposes in construction, especially in the NorthAmerican residential sector. Strand type composite panels such as oriented strandboard (OSB) are one of the engineered woodbased products most commonly used for structural purposes in construction, especially in the North. Forest products companies are aware of the need for more efficient utilization of raw materials with better technologies and in environmentally friendly ways. With this approach on management of forests, engineered wood composite products such as strandboard or OSB have gained an important role in the world market. A decline in plywood manufacturing in many countries due to limited large log supply and environmental concerns should promote increased production of strand type panels in the future. Southern pine from plantation thinning and soft hardwood species such as aspen, with an average DBH of 200 mm, are most widely used raw materials in the Southern states in the USA [1]
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