Adhesive-and Metal-Free Assembly Techniques for Prefabricated Multi-Layer Engineered Wood Products: A Review on Wooden Connectors

Engineered wood products (EWPs) are being increasingly used as construction materials. EWPs currently made using synthetic adhesives or metal fasteners, which lead to poor recyclability and reusability. Therefore, this review paper focused on emerging adhesive- metal-free assembling techniques including dowels, rotary-dowel welding, wooden nails, dovetail joining alternative ways of making prefabricated EWPs. This will contribute towards green optimising the building process minimise its negative impact environment inhabitants, while maximising positive aspects finished structure. The respective advantages shortcomings be compared with those equivalent In general, dowel-laminated timber (DLT) provides sufficient load-bearing capacity even better ductility than size, but relatively low stiffness under a bending load limits application structural element. Optimised manufacturing parameters such dowel species, spacing, diameter, insertion angle, shape, etc. could studied improve stiffness. improved mechanical properties tight fitting due set-recovery densified support use sustainable alternatives hardwood dowels in DLT overcome problems loosening connections over time dimensional instability. rotary welding technology also enhance strength long-term performance dowel-type joints, water resistance needs further investigation. main obstacles implementing market missing technical information design guidelines based national codes.