Disclosed are a device and method for dry-wet cycle simulation testing of concrete in a tidal zone and a splash zone, falling within the technical field of durability testing equipment for marine concrete materials. The main structure of the test device comprises a liquid storage box (1), a test box (2), a communicating pipe (3), a liquid storage box vent hole (4), a test box vent hole (5), ceiling fans (6), a steel pipe (7), a support frame (8), an upper water level sensor (9), a lower water level sensor (10), a temperature and humidity sensor (11), a temperature sensor (12), a box body support (13), a communicating valve (14), a pipe frame (15), a water inlet pump (16), a water inlet valve (17), a water outlet pipe (18), a water outlet pump (19), a water outlet valve (20), a water spraying pipe (21), a spraying head (22), and a control box (23). The control box (23) can control and record test parameters in real time, and achieves a clear boundary between the tidal zone and the splash zone, such that, during testing, the tidal zone is in a soaked environment all the time, and the splash zone is in a spraying environment all the time, and this solves the problem of differing simulation in the tidal zone and in the splash zone, integrally and truly simulates a marine environment, and can be widely applied to testing for simulation of the dry-wet cycle of concrete.
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