Mesh anchorage in textile reinforced mortar ::development of a srtuctural design model

Among emerging strengthening methods, the use of thin layers of textile reinforced mortar (TRM) gains more and more attention. One of the structural design challenges of TRM is a resistance model for anchorage (or lap splice) by bond of the textile mesh, made of carbon, basalt or glass fiber yarns, in the mortar matrix. As the materials behave largely elastically up to rupture and show variability, the anchorage capacity may also be affected by the mesh width. Based on an experimental study and data from literature, the parameters of an existing bond model for single yarns were calibrated and applied in a non-linear serial and parallel spring model to retrace displacements of pull-out tests on entire meshes. A pull-outstrength model is derived, showing satisfactory accuracy and reliability, allowing recommendations for practical structural design of textile anchorage in TRM by bond.