Tunnel lining concrete durability test device

The invention belongs to the field of concrete, particularly relates to a tunnel lining concrete durability test device, and aims to solve the problems that stress at two ends of the device is unbalanced, the device can only be stretched outwards, extrusion stress detection on a concrete test piece is not performed, and the durability of the concrete test piece is influenced due to the fact that the existing concrete test piece is not relatively stable during re-detection. In order to solve the problem that manual adjustment is needed in the detection process, the invention provides the following scheme that the device comprises a workbench, and supporting legs are fixedly connected to the two sides of the bottom of the workbench; the concrete test piece is placed at the top of the working table, and two embedded screws which are symmetrically arranged are fixedly embedded in the two ends of the concrete test piece. Four auxiliary clamping plates are arranged and can be used for pre-clamping the concrete test