For demanding applications with increased requirements in terms of load-carrying capacity and long spans, the HighTech Timber Beam® (HTB) – a hybrid composite beam made of glulam and high-performance materials – was developed at the Bauhaus University in cooperation with a local SME . The applicability of the High-Tech Timber Beam® for TCC constructions (Timber-ConcreteComposite) is examined in ongoing research. In former investigations several studies with new technologies and materials for rehabilitation and strengthening of historic timber structures were carried out at the Bauhaus University . Within those studies, several formulations of glue-mortar based on epoxy resin and mineral fillings (hereinafter also referred to as PC – polymer concrete) were developed to implement a direct and continuous bond between timber and reinforcing materials or elements (for instance LVL, CFRP lamellas, bars made of GFRP or steel). The different mixtures of PC were adjusted to their application purposes through a range of modifications to the composition and detailed material analysis.