Fingerjointing Unseasoned, Rough Western Red Cedar Lumber Using the WFPL (Western Forest Products Laboratory) Method

摘要

Sixty-six boards containing two fingerjoints each were prepared from 'green' rough western red cedar lumber using the WFPL method. For these experiments, the bond quality and durability properties of fingerjoints made with two glues, LT-75 and Cascophen 2600, were examined over a wide range of experimental conditions involving three different end pressures of 120, 430 and 860 psi, three heating times, of 8, 10 and 15 min. and two temperatures, 300 and 350F. For all the experimental conditions examined, the average percent wood failure and modulus of rupture values indicated the fingerjoints had excellent bond quality. The average percentage delamination values were very low indicating excellent durability properties of the glue-wood bonds. The fingerjoints easily met the delamination requirements in CSA Standard 0268.