Method for detecting penetration depth of inorganic capillary crystalline material on concrete surface

The invention relates to a method for detecting the penetration depth of an inorganic capillary crystalline material on the surface of concrete, which comprises the following steps: brushing the inorganic capillary crystalline material with known brushing density on the surface of a concrete test block, and placing the concrete test block in a closed box with adjustable humidity, temperature and air pressure, enabling the inorganic permeable crystalline material to naturally permeate under the conditions of set humidity, temperature and air pressure; after a certain time of permeation treatment, detecting the concentrations of Na and K elements in samples, away from the surface by different depths, of the concrete test block, finding the depths when the concentrations of the Na and K elements suddenly decrease according to a curve chart of the concentrations of the Na and K elements along with the depths, and determining the permeation depth of the inorganic permeable crystalline material on the surface of th