ASTM D6237-19
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Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
ASTM International , 09/01/2019
Pages: 12
1.1This guide is intended as an information aid to painting inspectors in carrying out the task efficiently. It includes the key elements of surface preparation, coatings application, and final approval for both field and shop work. The items should be selected that are pertinent to a specific project.
Note 1:For additional helpful information, refer to the following documents: Manual of Concrete Practice ACI 515R American Concrete Institute2 Manual of Coating Work for Light Water Nuclear Power Plant Primary Containment and Other Safety Related Facilities3 C811 Practice for Surface Preparation of Concrete for Application of Chemical-Resistant Resin Monolithic Surfacings4 Steel Structures Painting Manual Vol. 1 – Good Painting Practices5 Steel Structures Painting Manual Vol. 2 – Systems and Specifications5 Manufacturers Specifications and Instructions (made available to the inspector for reference to special requirements for proper application) Safety Data Sheets (needed to ensure that personnel take necessary precautions in handling hazardous materials). Available from Materials manufacturer.
1.2Certain industries or owners may require certified inspection personnel. See Guide D4537 for establishing procedures to certify inspectors for coating work in nuclear facilities. SSPC offers a training and certification program for concrete coating inspection.5
1.3In certain cases the inspector may be required to assess the condition of the concrete substrate. SSPC has published an illustrated guide for performing a concrete condition assessment.5
1.4The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6This guide is arranged in the following order:
Section Referenced Documents 2 ASTM Standards 2.1 OSHA Standards 2.2 ICRI Standards 2.3 SSPC Standards 2.4 Significance and Use 3 Preparation for Inspection 4 Surface Preparation Methods and Requirements 5 Surface Preparation 5.1 Factors Affecting Coating Performance 5.2 Surface Condition 5.2.1 Cleanliness 5.2.2 Moisture 5.2.3 Surface Preparation Procedures 5.3 Dry Surface Cleaning 5.3.1 Water and Steam Cleaning 5.3.2 Mechanical Tool Cleaning 5.3.3 Hand Tool Cleaning 5.3.3.1 Power Tool Cleaning 5.3.3.2 Scarifying Machines 5.3.3.3 Pre- and Post-Surface Preparation 5.3.3.4 Finished Surface 5.3.3.5 Blast Cleaning 5.3.4 Water Blast Cleaning 5.3.5 Acid Etching 5.3.6 Precautions in Preparing Unpainted and Previously Painted Surfaces 5.4 Inspection of Surfaces Prior to Field Painting 5.5 New Construction 5.5.1 Maintenance Repainting 5.5.2 Cracks and Voids 6 Cracks 6.1 Cracks in Concrete 6.1.1 Joints in Concrete 6.1.2 Voids 6.2 Recoat Intervals 6.3 Coating Storage and Handling 7 Storage of Coating and Thinner 7.1 Mixing of Coatings 7.2 Thinning 7.3 Thinning of Coating 7.3.1 Heating of Coating 7.4 Ambient Condition Considerations 8 Drying 8.1 Low Temperature 8.2 High Temperature 8.3 Moisture 8.4 Wind 8.5 Coating Application 9 Residual Contaminants 9.1 Quality Assurance 9.2 Film Defects 9.2.1 Brush Application 9.3 Spray Application 9.4 Roller Application 9.5 Miscellaneous Methods 9.6 Rate of Application 9.7 Additional Considerations 10 Ventilation 10.1 Painting Schedule 10.2 Film Integrity 10.3 Recoat Time 10.4 Coating System Failure 10.5 Inspection Equipment 11 General 11.1 Adhesion of Existing Coating 11.1.1 Portable Pull-Off Adhesion 11.1.2 Field Inspection Equipment 11.2 Drying and Curing Times 11.2.1 Thermometers 11.2.1.1 Psychrometric Charts 11.2.1.2 Wet-Film Thickness Gages 11.2.2 Interchemical Gage 11.2.2.1 Notched Gage 11.2.2.2 Dry-Film Thickness Gages 11.2.3 Destructive Thickness Gage 11.2.3.1 Nondestructive Film Thickness Gages 11.2.3.2 Discontinuity (Holiday) Tester 11.3 Inspection Checklist Appendix X1
1.7This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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