The main objective of this study is to evaluate heat delamination characteristics of structural adhesives used for face bonding of cross-laminated timber, when subjecting both sides of CLT specimens to the small-scale flame test as required in the normative Annex A.2 of CSA O177 "Qualification Code for Manufacturers of Structural Glued-Laminated Timber". While not technically in accordance with the CSA O177 Annex A.2 methodology, this flame exposure allows for a direct comparison to previous work performed on glulam specimens.
The long-term objective is to determine which currently-accepted test method allows for a better evaluation of heat delamination characteristics of adhesives used in structural engineered wood products, based on their actual end-use applications (e.g. bending, compression, combined stress, etc.) and their inherent manufacturing characteristics (e.g. cross-plies, etc.)