ASTM D4262-05(2018)
(Test Method)Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
SIGNIFICANCE AND USE
3.1 Chemical cleaning and etching is used to prepare concrete for coating.
3.2 Residual chemicals not removed by water rinsing may adversely affect the performance and adhesion of coatings applied over prepared concrete surfaces. It is the intent of this test method to determine that residual chemicals have been removed by measuring the acidity or alkalinity of the final rinsed surface.
SCOPE
1.1 This test method covers procedures for determining the acidity or alkalinity of concrete surfaces prepared by chemical cleaning or etching prior to coating.
1.2 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.
1.3 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.
General Information
- Status
- Published
- Publication Date
- 31-Jul-2018
- Technical Committee
- D33 - Protective Coating and Lining Work for Power Generation Facilities
- Drafting Committee
- D33.05 - Application and Surface Preparation
Relations
- Replaces
ASTM D4262-05(2012) - Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces - Effective Date
- 01-Aug-2018
- Referred By
ASTM D5107-03(2022) - Standard Practice for Preparatory Surface Cleaning of Architectural Sandstone - Effective Date
- 01-Aug-2018
- Effective Date
- 01-Aug-2018
- Effective Date
- 01-Aug-2018
- Referred By
ASTM F3441-23a - Standard Guide for Measurement of pH Below Resilient Flooring Installations - Effective Date
- 01-Aug-2018
- Effective Date
- 01-Aug-2018
- Effective Date
- 01-Aug-2018
- Effective Date
- 01-Aug-2018
- Referred By
ASTM D4261-05(2018) - Standard Practice for Surface Cleaning Concrete Masonry Units for Coating - Effective Date
- 01-Aug-2018
- Effective Date
- 01-Aug-2018
- Effective Date
- 01-Aug-2018
Overview
ASTM D4262-05(2018) is a standardized test method developed by ASTM International to determine the pH of chemically cleaned or etched concrete surfaces. This standard is specifically designed for assessing the residual acidity or alkalinity on concrete that has been prepared for coating applications. Ensuring proper pH levels is critical, as any remaining chemicals after cleaning or etching can negatively impact the adhesion and performance of coatings. By following this ASTM standard, professionals can verify that concrete surfaces have been adequately rinsed and are prepared for optimal coating adhesion.
Key Topics
- Purpose of Chemical Cleaning and Etching: Chemical cleaning and etching are common methods used to prepare concrete surfaces before the application of protective coatings. These processes remove contaminants and create a suitable profile for coating adhesion.
- Significance of pH Testing: Measuring surface pH helps verify that all residual chemicals from cleaning and etching processes have been removed. Incorrect pH levels may indicate insufficient rinsing, which can compromise the effectiveness of subsequent coatings.
- Test Methods: ASTM D4262-05(2018) includes detailed procedures for pH determination using:
- pH test paper (1-11 range, 0.5 units increments)
- pH pencils (0-13 range)
- Flat electrode pH meters (0-14 range, 0.01 unit resolution)
- Acceptance Criteria: pH readings taken after final rinsing should not be more than 1.0 pH below or 2.0 pH above the pH of the rinse water, unless otherwise specified.
- Safety and Environmental Considerations: The standard highlights the importance of adhering to appropriate safety, health, and environmental practices when conducting tests, acknowledging that users must evaluate regulatory responsibilities individually.
Applications
- Surface Preparation Verification: This standard is highly relevant to professionals in concrete repair, restoration, and coating industries who need to assess whether a concrete surface is appropriately neutralized after chemical treatment.
- Quality Assurance for Protective Coatings: Contractors and facility owners use this ASTM method to ensure surfaces are in optimal condition for receiving protective coatings, preventing adhesion failures and premature degradation.
- Power Generation Facilities: ASTM D4262 is often applied in the preparation of surfaces in power plants where concrete must be coated for protection against aggressive environments.
- General Construction and Infrastructure Projects: Whenever concrete is chemically prepped for coatings in roads, bridges, or industrial structures, this standard provides a reliable guideline for surface assessment.
Related Standards
- ASTM D4258 – Standard Practice for Surface Cleaning Concrete for Coating
- ASTM D4259 – Standard Practice for Abrading Concrete
- ASTM D4285 – Standard Test Method for Indicating Oil or Water in Compressed Air
- ISO 8502-6/8502-9 – International standards for cleanliness of surfaces prior to painting
By implementing ASTM D4262-05(2018), industry professionals ensure that chemically cleaned or etched concrete surfaces have the correct pH levels and are properly prepared for durable, high-performance coatings. Using this standard reduces the risk of coating failure due to residual chemical contamination, thereby contributing to the longevity and success of protective treatments in a wide range of construction and industrial projects.
Get Certified
Connect with accredited certification bodies for this standard
ICC Evaluation Service
Building products evaluation and certification.
QAI Laboratories
Building and construction product testing and certification.
Aboma Certification B.V.
Specialized in construction, metal, and transport sectors.
Sponsored listings
Frequently Asked Questions
ASTM D4262-05(2018) is a standard published by ASTM International. Its full title is "Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces". This standard covers: SIGNIFICANCE AND USE 3.1 Chemical cleaning and etching is used to prepare concrete for coating. 3.2 Residual chemicals not removed by water rinsing may adversely affect the performance and adhesion of coatings applied over prepared concrete surfaces. It is the intent of this test method to determine that residual chemicals have been removed by measuring the acidity or alkalinity of the final rinsed surface. SCOPE 1.1 This test method covers procedures for determining the acidity or alkalinity of concrete surfaces prepared by chemical cleaning or etching prior to coating. 1.2 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. 1.3 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.
SIGNIFICANCE AND USE 3.1 Chemical cleaning and etching is used to prepare concrete for coating. 3.2 Residual chemicals not removed by water rinsing may adversely affect the performance and adhesion of coatings applied over prepared concrete surfaces. It is the intent of this test method to determine that residual chemicals have been removed by measuring the acidity or alkalinity of the final rinsed surface. SCOPE 1.1 This test method covers procedures for determining the acidity or alkalinity of concrete surfaces prepared by chemical cleaning or etching prior to coating. 1.2 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. 1.3 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.
ASTM D4262-05(2018) is classified under the following ICS (International Classification for Standards) categories: 91.080.40 - Concrete structures. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM D4262-05(2018) has the following relationships with other standards: It is inter standard links to ASTM D4262-05(2012), ASTM D5107-03(2022), ASTM C1894-22, ASTM D5295/D5295M-18, ASTM F3441-23a, ASTM E1857-97(2021), ASTM D4260-23, ASTM D6237-19, ASTM D4261-05(2018), ASTM D5498-12a(2018), ASTM D4258-23. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM D4262-05(2018) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
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.
Designation: D4262 − 05 (Reapproved 2018)
Standard Test Method for
pH of Chemically Cleaned or Etched Concrete Surfaces
This standard is issued under the fixed designation D4262; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope test method to determine that residual chemicals have been
removed by measuring the acidity or alkalinity of the final
1.1 This test method covers procedures for determining the
rinsed surface.
acidity or alkalinity of concrete surfaces prepared by chemical
cleaning or etching prior to coating.
4. Apparatus
1.2 This standard does not purport to address all of the
4.1 The specific apparatus for each test is described in
safety concerns, if any, associated with its use. It is the
Annex A1 – Annex A3.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
5. Materials
mine the applicability of regulatory limitations prior to use.
5.1 Potable Water, for rinsing chemically cleaned or etched
1.3 This international standard was developed in accor-
concrete surfaces.
dance with internationally recognized principles on standard-
5.2 Wet Concrete Surface, following the final water rinse
ization established in the Decision on Principles for the
and before the rinse water has completely drained off the
Development of International Standards, Guides and Recom-
surface.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
6. Procedure
2. Terminology
6.1 The preparatory actions for each alternative are de-
scribed in Annex A1 – Annex A3.
2.1 Definitions:
2.1.1 pH, n—a measure of acidity or alkalinity of a solution
6.2 At least two surface pH readings shall be taken for each
or surface, with neutrality represented by a value of 7, with
500 square feet or portion thereof. Readings shall be taken at
increasing acidity represented by smaller values, and with
randomly selected locations immediately following the final
increasing alkalinity represented by increasing values.
rinse and before all the rinse water has drained off the surface.
6.3 The pH of the water used for rinsing shall be determined
3. Significance and Use
to establish acceptance criteria. Readings shall be taken at the
3.1 Chemical cleaning and etching is used to prepare
beginning and end of the final rinse.
concrete for coating.
6.4 Unless otherwise specified, tests shall be conducted in
3.2 Residual chemicals not removed by water rinsing may
accordance with this procedure.
adversely affect the performance and adhesion of coatings
applied over prepared concrete surfaces. It is the intent of this 7. Acceptance Criteria
7.1 The pH readings following the final rinse shall not be
more than 1.0 pH lower or 2.0 higher than the pH of the rinse
This test method is under the jurisdiction of ASTM Committee D33 on
ProtectiveCoatingandLiningWorkforPowerGener
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...