Sealing method for detecting pavement water permeability coefficient

The invention discloses a sealing method for detecting a pavement water permeability coefficient, and belongs to the technical field of pavement performance detection. The sealing method comprises the following steps: randomly selecting a measuring point position on a pavement to be measured, cleaning a detecting point, and marking a detecting point range; placing a circular ring in a detection point range, and respectively drawing ring marks along the inner side and the outer side of the circular ring; smearing the sealing material along an annular area enclosed by the inner ring and the outer ring of the circular ring while pressing, and trimming and scraping away the sealing material adhered to the inner ring; a base of the pavement water seepage instrument is embedded in the annular area, the base is fixed through a ballasting iron ring, and a sealing material is smeared on the base to be pressed in a gap around the outer side of the annular area and pressed tightly; the sealing material is modified highe