ABSTRACT

This study investigated the feasibility of substituting core layer strands of randomly oriented strand boards (OSB) with waste wood particles with respect to CSA 0437–Series 93 Standards on OSB and Waferboard requirements. Standard core layer strands have been substituted with four different levels (0, 25, 50 and 100%) of waste wood particles. Several mechanical properties of the OSB have been tested. Overall, it could be demonstrated that waste wood particles can successfully be used in the core layer of OSB. All properties met the requirements of CSA 0437-Series 93, except for thickness swell (TS) and water absorption (WA). From a mechanical and physical board properties perspective, it is possible to substitute up to 100% of the core layer strands in randomly OSB panels with unsorted contaminated waste wood particles. However, results showed high density variability within boards and between different core compositions. Internal bond (IB) met the standard’s requirements, showed significant differences between the waste wood proportions and increased with the level of waste wood particles. The modulus of elasticity (MOE) and modulus of rupture (MOR) also met the requirements, and decreased with increasing waste wood particle levels.

摘要

这项研究调查了根据CSA 0437–93系列OSB和Waferboard要求，用废木屑代替无规取向刨花板（OSB）的芯层刨花的可行性。标准的芯层绞线已被四种不同水平（0％，25％，50％和100％）的废木屑替代。OSB的几种机械性能已经过测试。总体而言，可以证明废木材颗粒可以成功地用于OSB的核心层。除厚度膨胀（TS）和吸水率（WA）外，所有性能均满足CSA 0437系列93的要求。从机械和物理板性能的角度来看，可以用未经分类的被污染的废木屑颗粒代替无规OSB板中多达100％的芯层绞线。然而，结果显示板内部以及不同核心组成之间的高密度变异性。内部粘合剂（IB）符合标准要求，在废木比例之间显示出显着差异，并且随废木颗粒水平的增加而增加。弹性模量（MOE）和断裂模量（MOR）也符合要求，并且随着废木颗粒水平的增加而降低。