Concrete Floors: 6 Polishing Techniques

Concrete Floor Grinding and Polishing Construction Technology

1. Base surface treatment

The first step in concrete floor grinding and polishing involves using a refinishing machine to remove the loose overall surface layer and treat any hollow areas in the concrete. This process lays the foundation for subsequent grinding and polishing steps, ensuring a uniform and stable base surface for further processing.

2. Damage Repair

If damage or defects appear on the concrete surface, the use of repair materials is critical to restoring the integrity and visual appeal of the floor. This step addresses any cracks, chips, or surface irregularities and prepares the concrete for the subsequent leveling and grinding processes.

3. Concrete leveling

Use an epoxy floor refinishing machine equipped with a grinding cup wheel to smooth the floor. The focus of this step is to achieve a level and uniform surface, addressing any unevenness or irregularities in the concrete. Ground leveling sets the stage for subsequent sanding and polishing, ensuring the concrete foundation is consistent and smooth.

4. Rough grinding

Rough grinding involves using a 50-200 grit grinding disc to refine the concrete surface, removing any rough imperfections and preparing the surface for further refinement. This step helps improve the overall smoothness and uniformity of the concrete, setting the stage for the subsequent polishing stages.

5. Penetration treatment

Penetration treatments involve the use of precision concrete floor hardeners to enhance the hardness and durability of concrete surfaces. This step helps improve the floor’s long-term resilience and wear resistance, ensuring the concrete can withstand heavy foot traffic and environmental elements.

6. Fine grinding

The final step in grinding and polishing concrete floors is to use an 800-3000 grit polishing pad for a high-gloss, refined finish. The fine grinding helps improve the aesthetics and smoothness of the concrete surface, resulting in a visually striking and durable flooring solution.

Practical Operation of Concrete Floor

Grinding and polishing process

The actual operation of concrete floor grinding and polishing involves the use of an electric sander and a paint grinding disc to polish the concrete surface. The main purpose of this process is to remove stains, paint, and PVA glue from the surface, as well as repair any surface irregularities to restore smoothness. The use of refurbishing machines and grinding cup wheels helps to improve the overall smoothness and uniformity of the concrete, laying the foundation for the subsequent polishing stage.

Surface treatment and moisture content

According to road surface requirements, the concrete floor must be fully dry before grinding and polishing, with a moisture content of less than 7%. This ensures the surface is ready for treatment and allows subsequent coatings or sealants to adhere properly. In addition, the sealing and curing agent of the concrete floor must chemically react with the penetrating concrete floor and concrete to increase the density of the cement and enhance the strength of the road surface.

Application and precautions

Integral grinding and polishing of concrete floors are essential to obtain a smooth and resilient surface suitable for a variety of industrial and commercial applications. Concrete floors are often used in workshops for home appliances, machinery, food, and pharmaceuticals because of their long service life and easy maintenance. The application of sealing curing agents helps to improve the durability and resistance of the concrete surface, thereby increasing its overall performance and longevity.

Surface coating and finishing

After the grinding and polishing process, applying a protective coating is essential to enhance the durability and visual appeal of your concrete flooring. Applying paint evenly and levelly to the surface using a roller or special airless sprayer ensures an even and high-quality finish. Using clear tape to remove any debris or contaminants from the roller will help achieve a clean and professional finish.

In summary, the practicalities of concrete floor grinding and polishing are critical to obtaining a high-quality, beautiful, and durable concrete floor. By carefully executing every step from surface preparation to coating and finishing, professionals can ensure that concrete surfaces meet the highest quality and aesthetic standards, providing resilient and visually impactful flooring solutions for a variety of industrial and commercial applications.