<p>The paper presents the findings of an experimental study conducted to examine the structural response and failure characteristics of novel epoxy-saturated tensioned E-glass roving tied glass fiber reinforced polymer (GFRP)-concrete interfacial connections through push-out tests. A total of five steel-free connection systems (mechanical/surface-bonded) were developed using pultruded GFRP ribbed rebars, laminates, and epoxy resin; in the form of straight/inclined dowels, shear keys, and adhesive layers; and tested over two types of GFRP I-section structural profiles (pultruded/hand lay-up). The concrete sections were cast from normal-density, normal-strength concrete and were nominally reinforced with pultruded GFRP ribbed rebars. The mechanical connectors were riveted down to the flanges of the GFRP I-section profile of the test specimens by winding the dowel-laminate junctions with repeated wraps of uncured epoxy-saturated tensioned E-glass roving. For each of the connection systems, the test results were obtained as load-slip curves, from the analysis of which the strength and stiffness properties of the same were determined. The connections displayed better ductility with the hand lay-up profile and high interfacial shear capacity with the pultruded profile; the connection stiffness, on the other hand, remained almost invariant to the profile type. In the mechanical connections, progressive bearing and delamination of the profile flange around the dowels imparted significant ductility to the connection systems and was observed as the primary failure mode. The surface-bonded connections exhibited a stiffness of around five times that of their mechanical counterparts but experienced a sudden catastrophic failure due to debonding and cohesive failure of the concrete interface.</p>