eng Science and Education Publishing American Journal of Civil Engineering and Architecture 2328-3998 2018-01-26 6 1 38 45 10.12691/ajcea-6-1-5 AJCEA2018615 article Decroly DJOUBISSIÉ DENOUWÉ 1 Adamah MESSAN adamah.messan@2ie-edu.org 1 Eric FOURNELY 2 3 Abdelhamid BOUCHAIR 3 3 3 Institut International d’ingénierie de l’Eau et de l’Environnement (2iE), Laboratoire Eco-Matériaux de Construction (LEMC), 01 BP 594 Ouagadougou 01, Burkina Faso Université Clermont Auvergne (UCA), Institut Pascal (IP), BP 10448, F-63000 Clermont-Ferrand, France The influence of interlayer on mechanical properties of timber-concrete composite structures using threaded rebar as shear connector is studied. Push-out tests are performed with two configurations of connection between timber and concrete with and without plywood interlayer: one threaded rebar and two cross-threaded rebars. The experimental study consists of push-out tests to characterize the failure modes, the load carrying capacity, and the stiffness for serviceability and ultimate limit states of the connections. The responses of the configurations with interlayer are compared with those without interlayer. The comparisons show that the presence of interlayer reduces the shear strength and the stiffness of the timber-concrete connection with threaded reinforcing bar as connector. Furthermore, based on the experimental results and using nonlinear regression, a mathematical model of each one of configurations of connection is derived which can be easily used with nonlinear FE analyses of Timber-Concrete Connection (TCC) beams. http://pubs.sciepub.com/ajcea/6/1/5/ajcea-6-1-5.pdf timber-concrete connection tropical wood threaded rebar interlayer push-out tests