The combination of two high performance materials, ultra-high performance concrete and carbon reinforcement, allows for the construction of efficient, durable thin-walled structural elements. In order to investigate the shear behaviour of such elements a test series on thin-webbed textile reinforced T-beams was planned and carried out at the Institute of Structural Engineering at TU Wien. In the experiments the efficiency of carbon textile reinforcement grids with different impregnation materials used as shear reinforcement was analysed. Furthermore, the shear span to effective depth ratio as well as the effect of prestressing on the shear carrying capacity was investigated. This article describes the experimental programme and shows the test results. The evaluation of the results indicates a higher shear performance of beams with lower-tex sand coated, acrylonitrile-styrene-acrylate copolymers impregnated textile fabrics than with Heavy-Tow grids with an epoxy resin impregnation. For the case of prestressing the carbon fibre reinforced polymer an additional increase of the shear carrying capacity of the thin-walled carbon textile reinforced structures was verified.

两种高性能材料（超高性能混凝土和碳纤维增强材料）的结合，可以构建高效，耐用的薄壁结构元件。为了研究此类元件的剪切性能，在维也纳工业大学结构工程研究所计划并进行了薄网织物增强T型梁的测试系列。在实验中，分析了使用不同浸渍材料作为剪切增强材料的碳纤维增强材料网格的效率。此外，还研究了剪切跨度与有效深度之比，以及预应力对剪切承载力的影响。本文介绍了实验程序并显示了测试结果。结果的评估表明，用低tex砂涂层的丙烯腈-苯乙烯-丙烯酸酯共聚物浸渍的纺织纤维比用环氧树脂浸渍的Height-Tow网格的梁具有更高的剪切性能。对于预应力碳纤维增强聚合物的情况，证实了薄壁碳纤维增强结构的剪切承载能力的进一步提高。