Performance of polyurethane adhesive in hardwood cross-laminated timber

• DOI: 10.15376/biores.20.1.2135-2149
• Publication Date: 2025-02-10T22:37:53Z
• Authors: Bradia T. Henfield; Tamara Franca; Frederico Franca; Franklin Quin; Rachel A. Arango; Katie M. Ohno
• Keywords: Cross laminated timber

As hardwood cross-laminated timber (CLT) gains attention due to its construction potential, understanding the interaction between panels and adhesives is critical for ensuring structural integrity longevity of buildings. This study investigated adhesive bonding properties in CLT made from red oak (Quercus spp. L.), sweet gum (Liquidambar styraciflua yellow poplar (Liriodendron tulipifera using southern pine (Pinus L.) (SP) as a control. Adhesive performance was evaluated through shear block tests assess bond line strength delamination measure durability under cyclic moisture conditions. Results indicated significant variations among specimens compared SP, with differences both resistance. Red exhibited significantly greater all other species. The observed samples not different than that control SP samples. results These findings provide insights into selecting optimizing production.