ASTM D4260-88(1999)

Standard Practice for Acid Etching Concrete

SCOPE
1.1 This practice includes surface preparation of concrete to prepare the surface prior to the application of coatings.  
1.2 This practice is intended to alter the surface profile of the concrete and to remove foreign materials and weak surface laitance.  
1.3 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 5.

General Information

• Status: Historical
• Publication Date: 31-Dec-1998
• ICS: 91.080.40 - Concrete structures
• Technical Committee: D33 - Protective Coating and Lining Work for Power Generation Facilities
• Drafting Committee: D33.05 - Application and Surface Preparation

Relations

• Replaced By: ASTM D4260-05 - Standard Practice for Liquid and Gelled Acid Etching of Concrete
• Effective Date: 01-Jun-2005
• Referred By: ASTM D1734-93(2022) - Standard Practice for Making Cementitious Panels for Testing Coatings
• Effective Date: 01-Jan-1999
• Referred By: ASTM D6237-19 - Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
• Effective Date: 01-Jan-1999
• Referred By: ASTM D8104-17(2023) - Standard Guide for Determining Coating Qualification Test Data Applicability
• Effective Date: 01-Jan-1999
• Referred By: ASTM D4258-23 - Standard Practice for Surface Cleaning Concrete for Coating
• Effective Date: 01-Jan-1999
• Referred By: ASTM D5139-19 - Standard Specification for Sample Preparation for Qualification Testing of Coatings to be Used in Nuclear Power Plants
• Effective Date: 01-Jan-1999
• Referred By: ASTM D5498-12a(2018) - Standard Guide for Developing a Training Program for Personnel Performing Coating and Lining Work Inspection for Nuclear Facilities
• Effective Date: 01-Jan-1999

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D4260–88 (Reapproved 1999)
Standard Practice for
Acid Etching Concrete
This standard is issued under the fixed designation D 4260; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This practice includes surface preparation of concrete to 4.1 This practice is used to prepare concrete for coatings
prepare the surface prior to the application of coatings. where optimum bond is desired for service conditions such as
1.2 This practice is intended to alter the surface profile of continuous or intermittent immersion, temperature cycling, or
the concrete and to remove foreign materials and weak surface mechanical loading.
laitance.
5. Hazards
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 5.1 New concrete shall be cured in accordance with ACI-
308.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 5.2 Concrete cure compounds, form release materials, or
concrete hardeners may require abrading, in accordance with
bility of regulatory limitations prior to use. For specific hazard
statements, see Section 5. Practice D 4259, as acid etching may not be effective.
5.3 All oil and grease shall be removed in accordance with
2. Referenced Documents
Practice D 4258 prior to mechanical abrading, abrasive blast
2.1 ASTM Standards: cleaning, water blasting, or acid etching.
D 4258 PracticeforSurfaceCleaningConcreteforCoating 5.4 Use and disposal of materials should conform to estab-
D 4259 Practice for Abrading Concrete lished federal, state, local, and project requirements.
D 4262 Test Method for pH of Chemically Cleaned or
6. Acid Etching Procedure
Etched Concrete Surfaces
6.1 Pre-Surface Preparation:
D 4263 Test Method for Indicating Moisture in Concrete by
the Plastic Sheet Method 6.1.1 Remove grease, oil, and other penetrating contami-
D 4541 Test Method for Pull-Off Strength of Coatings nants (see Practice D 4258).
6.1.2 Remove fins and protruding surface irregularities by
Using Portable Adhesion Testers
2.2 Other Standard: mechanical means.
6.1.3 Surfaces shall be free of standing water.
ACI-308 Recommended Practice for Curing Concrete
6.1.4 Some curing compounds may not be removed by acid
3. Summary of Practice
etching and will require preparation by mechanical abrading,
3.1 This practice is intended to provide a clean, abrasive blasting, or water blasting in accordance with Practice
contamination-free, and roughened surface. D 4259.
3.2 Acceptable surfaces shall be free of laitance, form 6.2 Suitable Surfaces:
release agents, curing agents, oil, grease, and other penetrating 6.2.1 This method is primarily suited for use on horizontal
contaminants.The surface shall be free of fins, projections, and surfaces.
loosely adhering concrete, dirt, and dust particles. 6.2.2 Other methods of preparation may be more suitable
3.3 For some applications, a minimum concrete surface for rough concrete surfaces and walls or overhead surfaces.
strength may be required for proper coating performance. 6.3 Acid Etching Solutions:
6.3.1 Typical solutions covered by this method are muriatic
(hydrochloric), sulfamic, phosphoric and citric acids. Hydro-
This practice is under the jurisdiction ofASTM Committee D-33 on Protective
chloric acid shall not be used where chlorides are prohibited.
Coating and Lining Work for Power Generating Facilities and is the direct
6.3.2 The acid concentrations of etching solutions may vary,
responsibility of Subcommittee D33.05 on Surface Preparation.
Current edition approved Fe
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