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ASTM

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
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
Current Stage
Ref Project

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
Referred By
ASTM D4261-05(2018) - Standard Practice for Surface Cleaning Concrete Masonry Units for Coating
Effective Date
01-Aug-2018
Referred By
ASTM C1894-22 - Standard Guide for Microbially Induced Corrosion of Concrete Products
Effective Date
01-Aug-2018
Referred By
ASTM D5295/D5295M-18 - Standard Guide for Preparation of Concrete Surfaces for Adhered (Bonded) Membrane Waterproofing Systems
Effective Date
01-Aug-2018
Referred By
ASTM D4258-23 - Standard Practice for Surface Cleaning Concrete for Coating
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
Referred By
ASTM E1857-97(2021) - Standard Guide for Selection of Cleaning Techniques for Masonry, Concrete, and Stucco Surfaces
Effective Date
01-Aug-2018
Referred By
ASTM D4260-23 - Standard Practice for Liquid and Gelled Acid Etching of Concrete
Effective Date
01-Aug-2018
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-Aug-2018
Referred By
ASTM D6237-19 - Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
Effective Date
01-Aug-2018

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ASTM D4262-05(2018) - Standard Test Method for pH of Chemically Cleaned or Etched Concrete SurfacesASTM D4262-05(2018) - Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
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ASTM D4262-05(2018) - Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
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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
...

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