Non-metallic reinforcement is increasingly used in construction practice. According to currentguidelines, it cannot yet be used to transfer shear forces. This is due to the anisotropic materialbehavior of non-metallic reinforcement compared to steel reinforcement as well as the lack ofknowledge on load-bearing behavior from composite shear tests. Within the scope of the diploma thesis, two test series are developed, one investigating the shearstrength in a pure shear test and on the other the load-bearing behavior in combination with concretein a composite shear test. Glass fiber reinforced and carbon fiber reinforced reinforcementare compared in the pure shear test. In the composite shear test, the behavior of unreinforcedspecimens is also investigated. Further variations are made by using different degrees of roughnessand reinforcement. Within the evaluation section, a comparison is made, by designing theshear force transmission in joints according to the approach of Eurocode 1992-1-1 (2011) andaccording to the approach of the fib-Model Code (2010). The test series show that non-metallic reinforcement participates ductilely in the load transferwith respect to shear in joints. The reinforced specimens have a residual load-bearing capacitywith the concrete failure (large load drop) in comparison with the unreinforced specimens.There is a local maximum force after the concrete failure, especially in the case of the two-layerdesign. This is true for glass fiber reinforced specimens as well as for carbon fiber reinforcedspecimens, and the tests clearly show the influence of the type of reinforcement on crack initiationand thus advance warning of failure. Different design approaches show that the guidelinesdesigned for steel cannot be adopted identically for non-metallic reinforcement. However, theexperimentally-determined load capacities of the latter do not deviate significantly from themathematically-determined load capacities, such that a modification of individual factors in thedesign approach provides sufficient safety in the design. The influence of further parameters is shown and more extensive studies are necessary to establisha design approach adapted to non-metallic reinforcement.