General This standard gives requirements for surface preparation of concrete by mechanical@ chemical@ or thermal methods prior to the application of bonded protective coating or lining systems. The requirements of this standard are applicable to all types of cementitious surfaces including cast-in-place concrete floors and walls@ precast slabs@ masonry walls@ and shotcrete surfaces. An acceptable prepared concrete surface should be free of contaminants@ laitance@ loosely adhering concrete@ and dust@ and should provide a sound@ uniform substrate suitable for the application of protective coating or lining systems. When required@ a minimum concrete surface strength@ maximum surface moisture content@ and surface profile range should be specified in the procurement documents (project specifications). Appendix A does not contain mandatory requirements.
SP 13-1997 history
1997SP 13-1997 Surface Preparation of Concrete (NACE No. 6-1997)