ASTM D6237 - 19
Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
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Significance and Use
3.1 This guide is intended as a reference for those concerned with the inspection of thin- or thick-film coating application to concrete and masonry substrates. It does not cover the application of cement-type coatings. The requirements for inspection should be addressed in all protective coating and lining work specifications. This guide may be used by specification writers when selecting and establishing the inspection requirements for coating and lining specifications. A sample checklist for use by inspectors is included as Appendix X1.1.
1. Scope
1.1 This 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.
1.2 Certain 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
1.3 In 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
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 This 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.
1.6 This guide is arranged in the following order:
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| Section | |
| Referenced Documents | 2 | |
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| ASTM Standards | 2.1 |
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| OSHA Standards | 2.2 |
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| ICRI Standards | 2.3 |
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| SSPC Standards | 2.4 |
| Significance and Use | 3 | |
| Preparation for Inspection | 4 | |
| Surface Preparation Methods and Requirements | 5 | |
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| Surface Preparation | 5.1 |
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| Factors Affecting Coating Performance | 5.2 |
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| Surface Condition | 5.2.1 |
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| Cleanliness | 5.2.2 |
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| Moisture | 5.2.3 |
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| Surface Preparation Procedures | 5.3 |
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| Dry Surface Cleaning | 5.3.1 |
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| Water and Steam Cleaning | 5.3.2 |
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| Mechanical Tool Cleaning | 5.3.3 |
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| Hand Tool Cleaning | 5.3.3.1 |
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| Power Tool Cleaning | 5.3.3.2 |
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| Scarifying Machines | 5.3.3.3 |
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| Pre- and Post-Surface Preparation | 5.3.3.4 |
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| Finished Surface | 5.3.3.5 |
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| Blast Cleaning | 5.3.4 |
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| Water Blast Cleaning | 5.3.5 |
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| Acid Etching | 5.3.6 |
| Precautions in Preparing Unpainted and |
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| Previously Painted Surfaces | 5.4 |
| Inspection of Surfaces Prior to Field Painting | 5.5 | |
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| New Construction | 5.5.1 |
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| Maintenance Repainting | 5.5.2 |
| Cracks and Voids | 6 | |
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| Cracks | 6.1 |
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| Cracks in Concrete | 6.1.1 |
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| Joints in Concrete | 6.1.2 |
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| Voids | 6.2 |
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| Recoat Intervals | 6.3 |
| Coating Storage and Handling | 7 | |
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| Storage of Coating and Thinner | 7.1 |
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| Mixing of Coatings | 7.2 |
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| Thinning | 7.3 |
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| Thinning of Coating | 7.3.1 |
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| Heating of Coating | 7.4 |
| Ambient Condition Considerations | 8 | |
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| Drying | 8.1 |
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| Low Temperature | 8.2 |
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| High Temperature | 8.3 |
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| Moisture | 8.4 |
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| Wind | 8.5 |
| Coating Application | 9 | |
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| Residual Contaminants | 9.1 |
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| Quality Assurance | 9.2 |
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| Film Defects | 9.2.1 |
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| Brush Application | 9.3 |
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| Spray Application | 9.4 |
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| Roller Application | 9.5 |
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| Miscellaneous Methods | 9.6 |
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| Rate of Application | 9.7 |
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| Additional Considerations | 10 |
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| Ventilation | 10.1 |
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| Painting Schedule | 10.2 |
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| Film Integrity | 10.3 |
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| Recoat Time | 10.4 |
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| Coating System Failure | 10.5 |
| Inspection Equipment | 11 | |
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| General | 11.1 |
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| Adhesion of Existing Coating | 11.1.1 |
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| Portable Pull-Off Adhesion | 11.1.2 |
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| Field Inspection Equipment | 11.2 |
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| Drying and Curing Times | 11.2.1 |
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| Thermometers | 11.2.1.1 |
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| Psychrometric Charts | 11.2.1.2 |
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| Wet-Film Thickness Gages | 11.2.2 |
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| Interchemical Gage | 11.2.2.1 |
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| Notched Gage | 11.2.2.2 |
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| Dry-Film Thickness Gages | 11.2.3 |
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| Destructive Thickness Gage | 11.2.3.1 |
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| Nondestructive Film Thickness Gages | 11.2.3.2 |
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| Discontinuity (Holiday) Tester | 11.3 |
| Inspection Checklist | Appendix X1 | |
1.7 This 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
SSPC Standards
SSPC-AB 1 Mineral and Slag Abrasives SSPC Guide 23 Field Methods for the Determination of Moisture in Concrete and Masonry Walls and Ceilings, EIFS, and Stucco SSPC-Guide 6 Guide for Containing Debris Generated During Paint Removal Operations SSPC-Guide 7 SSPC-PA 7 Application of Coating to Concrete SSPC-PA 9 Measurement of Dry Coating Thickness Using Ultrasonic Gages SSPC-SP13/NACE No. 6 Surface Preparation of ConcreteInternational Concrete Repair Institute (ICRI)
Guideline No. 03732 Selecting and Specifying Concrete Surface Preparation for Sealers, Coatings, and Polymer Overlays Available from International Concrete Repair Institute, 3166 S. River Rd., Suite 132, Des Plaines, IL 60018, http://www.icri.org.ASTM Standards
C805 Test Method for Rebound Number of Hardened Concrete
C811 Practice for Surface Preparation of Concrete for Application of Chemical-Resistant Resin Monolithic Surfacings
D1212 Test Methods for Measurement of Wet Film Thickness of Organic Coatings
D3359 Test Methods for Rating Adhesion by Tape Test
D4138 Practices for Measurement of Dry Film Thickness of Protective Coating Systems by Destructive, Cross-Sectioning Means
D4258 Practice for Surface Cleaning Concrete for Coating
D4259 Practice for Preparation of Concrete by Abrasion Prior to Coating Application
D4260 Practice for Liquid and Gelled Acid Etching of Concrete
D4262 Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
D4263 Test Method for Indicating Moisture in Concrete by the Plastic Sheet Method
D4285 Test Method for Indicating Oil or Water in Compressed Air
D4414 Practice for Measurement of Wet Film Thickness by Notch Gages
D4537 Guide for Establishing Procedures to Qualify and Certify Personnel Performing Coating and Lining Work Inspection in Nuclear Facilities
D4787 Practice for Continuity Verification of Liquid or Sheet Linings Applied to Concrete Substrates
D5064 Practice for Conducting a Patch Test to Assess Coating Compatibility
D6132 Test Method for Nondestructive Measurement of Dry Film Thickness of Applied Organic Coatings Using an Ultrasonic Coating Thickness Gage
D6677 Test Method for Evaluating Adhesion by Knife
D7234 Test Method for Pull-Off Adhesion Strength of Coatings on Concrete Using Portable Pull-Off Adhesion Testers
D7682 Test Method for Replication and Measurement of Concrete Surface Profiles Using Replica Putty
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
F1869 Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride
F2170 Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes
ICS Code
ICS Number Code 87.020 (Paint coating processes); 91.060.10 (Walls. Partitions. Facades)
UNSPSC Code
UNSPSC Code 27112200(Masonry and concrete tools)
Referencing This Standard
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DOI: 10.1520/D6237-19
Citation Format
ASTM D6237-19, Standard Guide for Painting Inspectors (Concrete and Masonry Substrates), ASTM International, West Conshohocken, PA, 2019, www.astm.org
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