This dataset presents experimental research results on the long-term behaviour of a non-mechanical prestressed CFRP anchorage for concrete retrofitting. The following data is included: - Force-slip of lap-shear tests. - Slip profiles (at last stage) of prestress force releasing and lap-shear tests. Further details on the experimental setup, as well as representation of datasets can be found in the following works. Please cite the following works, if any part of the dataset is used within your research. https://doi.org/10.1016/j.compositesb.2017.11.062 https://doi.org/10.3390/polym10060565 Harmanci, Yunus Emre. Long-Term Resistance of Gradient Anchorage for Prestressed CFRP Strips in Structural Concrete Retrofitting. Diss. ETH Zurich, 2018.