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Q.
What is Concrete Surface Profile (CSP), and why is it important for applying thick mil coatings?
A.
Concrete Surface Profile (CSP) refers to the measure of the average texture depth on a concrete surface and is critical for the adhesion of thick mil coatings. The right CSP ensures that the coating mechanically interlocks with the concrete, leading to a stronger bond and a longer-lasting finish. For thick mil coatings, a higher CSP is often required to ensure the coating adheres properly and performs as expected, providing durability and resistance to peeling, cracking, or delamination.
Q.
How does surface porosity affect the adhesion of thick mil coatings?
A.
Surface porosity is crucial for the successful application of thick mil coatings. Porous surfaces allow the coating to penetrate into the concrete, creating a stronger bond that enhances the coating's longevity and performance. A properly prepared surface with the right level of porosity can significantly improve the adhesion of thick mil coatings, ensuring they are fully anchored to the substrate and capable of withstanding environmental and mechanical stresses.
Q.
Why is mechanical abrasion recommended for surface preparation?
A.
Mechanical abrasion, such as diamond grinding, is recommended for surface preparation because it reliably achieves the desired CSP and porosity needed for optimal coating adhesion. This method removes contaminants, levels the surface, and creates a uniform texture that thick mil coatings can bond to effectively. Mechanical abrasion is preferred over chemical methods for its ability to prepare the surface consistently and without introducing moisture or chemicals that could interfere with the coating's performance.
Q.
How do you determine the appropriate level of CSP for a specific coating application?
A.
The appropriate level of CSP for a specific coating application is determined by the type of coating being applied and the service conditions of the floor. Manufacturers of thick mil coatings, like Tru Nano X Polyaspartic resin, typically provide guidelines on the recommended CSP for their products. Generally, thicker coatings require a higher CSP to ensure a good mechanical bond. Assessing the concrete's hardness and the project's specific requirements helps in selecting the right diamond tooling and grinding technique to achieve the target CSP.
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Q.
What role do heavy grinders outfitted with special diamonds play in preparing concrete surfaces?
A.
Heavy grinders outfitted with special diamond tooling are essential for effectively preparing concrete surfaces, particularly for the application of thick mil coatings. These grinders are designed to handle the hardness of concrete, allowing for precise control over the surface's texture and porosity. The selection of diamond tooling is based on the concrete's hardness and the desired CSP, ensuring that the surface is adequately prepared to receive the coating. This equipment is key to achieving a uniform surface profile that promotes optimal coating adhesion and performance.