There are many reasons for hollowing: poor paving technology, insufficient paving maintenance period, poor quality of bonding materials, improper selection of primer and so on. These will all cause hollowing out.

Cutting stone edge seam

According to the empty drum position of the stone, cut seams on the four sides of the stone to clean the dust.

Masking paper protection

Protect the stone cracks with masking paper.

Extrusion repair

Aim the tip of Sinoe stone hollowing repair agent at the edge seam to squeeze the material, while squeezing the material, beat the plate with a rubber hammer, and scrape the remaining material on the plate surface into the plate seam with a small scraper.

massage

After 4 hours or the next day, continue to try to squeeze the material until it is squeezed again, and then wipe the stone surface with a wet cloth. If there is adhesion, wet it with a wet cloth and scrape it off with a blade.

waiting time

You can get here in 24 hours, after 48 hours, you can cut the repair glue and polish it with water, and you can reach the highest strength in 7 days.