A series of cyclic push-out tests on specimens with shear studs and steel deck with concrete fill is initiating in December of 2018. As of this writing the testing rig design is complete, all specimens have been manufactured and the concrete poured. SDII researchers are waiting for the specimens to reach their 28 day strength and then will initiate the complete test suite. The test matrix is as follows:
and provides a full exploration of the cyclic shear performance of this critical steel-concrete interface.
The testing rig is unique, as cyclic push-out testing has only rarely been conducted. Key features of the testing rig are shown in the following. 
The specimen consists of the (orange) beam, steel deck, shear studs, and concrete (light green) with reinforcing steel. The moving portion of the specimen is the orange beam which has two large capacity actuators to provide balanced cyclic demands on the specimen. The concrete deck reacts against end pieces as shown and has internal reinforcement to provide confinement at the end reactions and unreinforced edges. In addition a superimposed load is applied to provide addition confinement and better simulation of in-service conditions. The SDII team looks forward to reporting out on the results and integrating into their modeling efforts in the first half of 2019.