Textile reinforcement yarns consist of many filaments, which can slip relative each other. At modelling of the global structural behaviour, interfilament slip in the yarns, and slip between the yarns and the concrete can be considered by efficiency factors for the stiffness and strength of the yarns, and by applying a bond-slip relation between yarns and concrete. In this work, an effective and robust method for calibration of such models was developed. Two-sided asymmetrical pull-out tests were carried out, with varying embedment lengths designed to obtain both pull-out and rupture of the textile as failure mode. The efficiency factors for strength and stiffness of the textile were very similar, 34% and 35% respectively. This indicates the stress distribution within a yarn to be uneven in a similar manner for small and large stress levels, and that interfilament slip has a larger influence than variation of filaments’ strength.

纺织增强纱线由许多长丝组成，这些长丝可以相互滑动。在对整体结构行为进行建模时，纱线中的丝间滑移以及纱线与混凝土之间的滑移可以通过纱线刚度和强度的效率因素以及通过应用纱线和混凝土之间的粘合-滑移关系来考虑。在这项工作中，开发了一种有效且稳健的方法来校准此类模型。进行了双边不对称拉出测试，设计了不同的嵌入长度，以获得纺织品的拉出和断裂作为失效模式。纺织品强度和刚度的效率因子非常相似，分别为 34% 和 35%。这表明纱线内的应力分布以类似的方式对于小应力和大应力水平是不均匀的，