1. Ground grinding: Use a grinding machine to grind the parts above the ground, such as cement slag, and remove the ground dust. Adopt other treatment measures for loose ground and oily ground.

2. Priming: After the concrete base material is treated and cleaned, priming (roller coating or brush coating) can be carried out, and the roller coating or brush coating should be

even and uniform in thickness. The primer has a certain water vapor permeability function, which can enhance the strength of the substrate and increase the adhesion of the coating to the substrate.

3. Intermediate coating: adding quartz sand and quartz powder into the prepared waterborne epoxy coating (intermediate coating) to prepare waterborne epoxy mortar, and evenly coating it with a trowel to increase the thickness and compressive strength of the coating.

4. Batch repair: After intermediate coating, sand paper is used to polish the floor, and putty made of water-based epoxy coating (intermediate coating) and quartz powder is used to construct several times according to the actual needs, and it is required to be flat without holes, without batch knife marks and sand grinding marks.

5. Batch repair of putty: The middle coating material is prepared according to the proportion method of the middle coating material, and it can be scraped directly on the polished middle coating surface

layer without adding water. If necessary, fine quartz powder or calcium bicarbonate powder can be properly added for batch patching, and after batch patching is finished, fine sand table paper is used for overall polishing, and the reference dosage of batch patching materials is 1.15-1.1kg/㎡.

6. surface coating: roll coat the water-based epoxy floor coating twice. after completion, it is required that the whole floor should be soft, clean, uniform in color and free from hollowing.

7. curing: it takes 24 hours for the surface layer to work, and it should be sealed during this period, so as not to affect the clean and smooth surface. It can only be put on

people after 3 days, and it can be put into use after 7 days of completion and maintenance (subject to 25℃, and it needs to be appropriately extended at low temperature).