What is the joint surface preparation standard for concrete?

The joint surface preparation standard for concrete is indeed governed by NACE 6 / SSPC-SP 13. This standard specifically addresses the preparation requirements for concrete substrates, particularly in the context of coatings and linings. It establishes the conditions necessary for achieving proper adhesion and long-term performance of protective coatings applied to concrete surfaces.

The standard outlines the procedures and criteria for surface cleaning and preparation, including the removal of contaminants such as oils, dirt, and existing coatings that may interfere with adhesion. By following NACE 6 / SSPC-SP 13, inspectors and contractors can ensure that the concrete surfaces are properly prepared to achieve optimal coating performance.

The other options pertain to different standards or guidelines not specific to joint surface preparation for concrete. For example, ASTM F 1869 relates to the measurement of moisture vapor emissions from concrete, which is critical for ensuring compatibility with certain coatings but does not focus directly on surface preparation methods. Understanding the appropriate standards for surface preparation is essential for achieving high-quality outcomes in coating applications.