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ASTM

ASTM D4262-05(2012)

(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
Chemical cleaning and etching is used to prepare concrete for coating.
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Apr-2012
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 - Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
Effective Date
01-May-2012
Replaced By
ASTM D4262-05(2018) - Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
Effective Date
01-Aug-2018
Referred By
ASTM F3441-23a - Standard Guide for Measurement of pH Below Resilient Flooring Installations
Effective Date
01-May-2012
Referred By
ASTM D6237-19 - Standard Guide for Painting Inspectors (Concrete and Masonry Substrates)
Effective Date
01-May-2012
Referred By
ASTM C1894-22 - Standard Guide for Microbially Induced Corrosion of Concrete Products
Effective Date
01-May-2012
Referred By
ASTM D5295/D5295M-18 - Standard Guide for Preparation of Concrete Surfaces for Adhered (Bonded) Membrane Waterproofing Systems
Effective Date
01-May-2012
Referred By
ASTM D5107-03(2022) - Standard Practice for Preparatory Surface Cleaning of Architectural Sandstone
Effective Date
01-May-2012
Referred By
ASTM D4258-23 - Standard Practice for Surface Cleaning Concrete for Coating
Effective Date
01-May-2012
Referred By
ASTM D4261-05(2018) - Standard Practice for Surface Cleaning Concrete Masonry Units for Coating
Effective Date
01-May-2012
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-May-2012
Referred By
ASTM E1857-97(2021) - Standard Guide for Selection of Cleaning Techniques for Masonry, Concrete, and Stucco Surfaces
Effective Date
01-May-2012
Referred By
ASTM D4260-23 - Standard Practice for Liquid and Gelled Acid Etching of Concrete
Effective Date
01-May-2012

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ASTM D4262-05(2012) - Standard Test Method for pH of Chemically Cleaned or Etched Concrete SurfacesASTM D4262-05(2012) - Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
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ASTM D4262-05(2012) - Standard Test Method for pH of Chemically Cleaned or Etched Concrete Surfaces
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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: D4262 − 05 (Reapproved 2012)
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 4. Apparatus
1.1 This test method covers procedures for determining the 4.1 The specific apparatus for each test is described in
acidity or alkalinity of concrete surfaces prepared by chemical Annex A1-Annex A3.
cleaning or etching prior to coating.
5. Materials
1.2 This standard does not purport to address all of the
5.1 Potable Water, for rinsing chemically cleaned or etched
safety concerns, if any, associated with its use. It is the
concrete surfaces.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5.2 Wet Concrete Surface, following the final water rinse
bility of regulatory limitations prior to use.
and before the rinse water has completely drained off the
surface.
2. Terminology
6. Procedure
2.1 Definitions:
2.1.1 pH, n—a measure of acidity or alkalinity of a solution
6.1 The preparatory actions for each alternative are de-
or surface, with neutrality represented by a value of 7, with
scribed in Annex A1-Annex A3.
increasing acidity represented by smaller values, and with
6.2 At least two surface pH readings shall be taken for each
increasing alkalinity represented by increasing values.
500 square feet or portion thereof. Readings shall be taken at
3. Significance and Use randomly selected locations immediately following the final
rinse and before all the rinse water has drained off the surface.
3.1 Chemical cleaning and etching is used to prepare
concrete for coating. 6.3 The pH of the water used for rinsing shall be determined
to establish acceptance criteria. Readings shall be taken at the
3.2 Residual chemicals not removed by water rinsing may
beginning and end of the final rinse.
adversely affect the performance and adhesion of coatings
applied over prepared concrete surfaces. It is the intent of this 6.4 Unless otherwise specified, tests shall be conducted in
accordance with this procedure.
test method to determine that residual chemicals have been
removed by measuring the acidity or alkalinity of the final
7. Acceptance Criteria
rinsed surface.
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
ProtectiveCoatingandLiningWorkforPowerGenerationFacilitiesandisthedirect
water unless otherwise specified.
responsibility of Subcommittee D33.05 on Application and Surface Preparation.
Current edition approved May 1, 2012. Published May 2012. Originally
...

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