Effects of Shear Connectors on Flexural Properties of RC-CLT Composite Slab

Abstract

The out-of-panel flexural properties of composite slabs of reinforced concrete (RC) and cross laminated timber (CLT) joined by shear connectors (lag screws) were studied. Firstly, a push-out test was performed on the join surface of composite slabs. As a result, lag screws showed good deformation capacity properties in the push-out test. Then, a bending test was performed on composite slabs. Higher flexural properties were obtained with the deeper insertion of lag screws into CLT. Finally, the γ-method was applied to calculate initial stiffness and yield load, important factors in evaluating flexural properties of composite slabs. As a result, the calculated values showed a good correlation with experimental values.