The investigation of shear connections for cross laminated timber (CLT) wall elements is presented in this work. Timber-concrete composite (TCC) is used to develop a joint construction for CLT wall elements. Shear failure is decisive for design even though the timber has actually considerably higher resistance. The consideration of shear connections can be found in e. g. [1] and [2]. While TCC has been mainly used for ceilings subjected to bending load on one hand and CLT wall elements are conventionally connected using screws or pins in combination with butt deck strips on the other hand, a connecting joint construction for CLT wall elements using TCC is investigated in this work. Prefabricated timber elements can be connected on-site in a tongue and groove system by filling the groove with fine-grained concrete of high strength. Different additional internal connectors have been investigated, as shown in Fig. 1. Notches and steel connectors such as screws and perforated plates have been used (see [[3]]) as well as new connection types like glued-in textiles, which are presented here. Textiles made of alkali-resistant (AR) glass and textiles made of carbon are used. Textile reinforced concrete (TRC) and herein especially carbon reinforced concrete (CRC) has become an important field of concrete research (see e. g. [4]-[7]). In this work, a combination of TRC and TCC is used to connect CLT wall elements. The TRC joints had glued-in textile grids at an angle of 45 degree. To investigate the load-bearing behaviour of the joints, experimental investigations were carried out. Compression-shear tests were done for varying joint construction types. As a reference series, pure fine-grained concrete is used, i.e. without additional connectors and using adhesion only. The results of the compressionshear-tests are shown in Fig. 2, where the joints with textile reinforced concrete are compared to the ones without internal connectors. The load-bearing capacity of the joints with textiles glued in the wood and embedded in the concrete matrix is higher than the of the joints without textile connectors. Comparing the TRC joints among each other, the joints with carbon textiles show a higher load-bearing capacity than the AR-glass textiles. The results of the tests show that high shear strengths can be achieved with the designed tongue and groove joint in comparison to usual connection methods of CLT walls.