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Coal gangue, as industrial waste generated in the mining process, is rarely used in the construction of domestic airport runways. This paper studies the stability of coal gangue and the durability of cement stabilized coal gangue in combination with the characteristics of navigation airport construction. The coal gangue self-stability test includes: chemical composition, loss on ignition, crushing value and expansion ratio. The durability of cement stabilized coal gangue is mainly based on the freeze-thaw cycle test. The test results show that the sum of the content of coal gangue SiO2, Al2O3 and Fe2O3 in the mine is more than 70%, the loss on ignition is less than 15%, the control standard can be achieved, and the expansion ratio is not more than 0.5%. Coal gangue itself has good stability. By comparing the compressive strength values of the standard test pieces before and after 6 freeze-thaw cycles, it is found that the cement-stabilized coal gangue with different cement content has a frost resistance of more than 60%, and the overall frost resistance is good. In addition, considering the load level and safety reserve of the navigable airport, the cement content should be greater than 5%. The above conclusions can provide reference for the application of coal gangue in the field of airport construction.

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