Decay testing device and decay testing method

The invention provides a decay testing device and a decay testing method. The decay testing device comprises a box body, an upper loading plate and a fatigue testing machine. An upper loading clamping mechanism of the fatigue testing machine is fixedly connected with the upper loading plate. A lower loading clamping mechanism of the fatigue testing machine is fixedly connected with the bottom of the box body. A test piece to be tested is placed in the box body. The upper loading plate butts against the top face of the test piece. A bottom plate of the box body and the upper loading plate clamp the test piece together. The decay testing device is capable of simulating the working conditions formed under the combined action of temperature, acid rain, chlorine salt and high-speed train load to obtain the dynamic property decay law of cement-based materials of a ballastless track in the actual operation process more realistically, so that effective and reliable test data are provided for fatigue life forecast and