ASTM G180-23

Standard Test Method for Corrosion Inhibiting Admixtures for Steel in Concrete by Polarization Resistance in Cementitious Slurries

SIGNIFICANCE AND USE
4.1 This test method provides a means for assessing corrosion-inhibiting concrete admixtures.  
4.2 This test method is useful for development of admixtures intended to reduce corrosion of reinforcing steel in concrete.  
4.3 This test method is useful in determining the corrosivity of admixtures toward steel reinforcing if the admixture sample is compared to a control without admixtures.  
4.4 Good performance, a reduction in corrosion rate versus chloride alone by at least one order of magnitude in this test, is a strong indication that an admixture is a corrosion inhibitor. However, poor performance requires additional testing to determine if the admixture improves corrosion resistance.  
4.5 This test method shall not be used to predict performance in the field.  
4.6 The filtering process makes this test not suitable for the evaluation of emulsions.
SCOPE
1.1 This test method covers a procedure for determining the effects of chemical admixtures on the corrosion of metals in concrete. This test method can be used to evaluate materials intended to inhibit chloride-induced corrosion of steel in concrete. It can also be used to evaluate the corrosivity of admixtures by themselves or in a chloride environment. This test is not applicable for emulsions.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
1.4 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-May-2023
• ICS: 77.140.15 - Steels for reinforcement of concrete
• Technical Committee: G01 - Corrosion of Metals
• Drafting Committee: G01.14 - Corrosion of Metals in Construction Materials

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: G180 − 23
Standard Test Method for
Corrosion Inhibiting Admixtures for Steel in Concrete by
1
Polarization Resistance in Cementitious Slurries
This standard is issued under the fixed designation G180; 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 G3 Practice for Conventions Applicable to Electrochemical
Measurements in Corrosion Testing
1.1 This test method covers a procedure for determining the
G5 Reference Test Method for Making Potentiodynamic
effects of chemical admixtures on the corrosion of metals in
Anodic Polarization Measurements
concrete. This test method can be used to evaluate materials
G59 Test Method for Conducting Potentiodynamic Polariza-
intended to inhibit chloride-induced corrosion of steel in
tion Resistance Measurements
concrete. It can also be used to evaluate the corrosivity of
G193 Terminology and Acronyms Relating to Corrosion
admixtures by themselves or in a chloride environment. This
test is not applicable for emulsions.
3. Terminology
1.2 The values stated in SI units are to be regarded as
3.1 Definitions—For definitions of terms used in this prac-
standard. No other units of measurement are included in this
tice see Terminology G193.
standard.
4. Significance and Use
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4.1 This test method provides a means for assessing
responsibility of the user of this standard to establish appro-
corrosion-inhibiting concrete admixtures.
priate safety, health, and environmental practices and deter-
4.2 This test method is useful for development of admix-
mine the applicability of regulatory limitations prior to use.
tures intended to reduce corrosion of reinforcing steel in
1.4 This international standard was developed in accor-
concrete.
dance with internationally recognized principles on standard-
4.3 This test method is useful in determining the corrosivity
ization established in the Decision on Principles for the
of admixtures toward steel reinforcing if the admixture sample
Development of International Standards, Guides and Recom-
is compared to a control without admixtures.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
4.4 Good performance, a reduction in corrosion rate versus
chloride alone by at least one order of magnitude in this test, is
2. Referenced Documents
a strong indication that an admixture is a corrosion inhibitor.
2
2.1 ASTM Standards: However, poor performance requires additional testing to
C150/C150M Specification for Portland Cement determine if the admixture improves corrosion resistance.
C595/C595M Specification for Blended Hydraulic Cements
4.5 This test method shall not be used to predict perfor-
C670 Practice for Preparing Precision and Bias Statements
mance in the field.
for Test Methods for Construction Materials
4.6 The filtering process makes this test not suitable for the
D632 Specification for Sodium Chloride
evaluation of emulsions.
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
5. Apparatus
5.1 The test cell as described in Reference Test Method G5.
1
This test method is under the jurisdiction of ASTM Committee G01 on
5.2 Potentiostat, as described in Reference Test Method G5,
Corrosion of Metals and is the direct responsibility of Subcommittee G01.14 on
capable of varying potential at a constant scan rate and
Corrosion of Metals in Construction Materials.
Current edition approved June 1, 2023. Published June 2023. Originally measuring the resulting current.
approved in 2004. Last previous edition approved in 2021 as G180 – 21. DOI:
5.3 A method of recording the varying potential and result-
10.1520/G0180-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or ing current is needed.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
5.4 Electrode holder such as described in Fig. 3 of Refer-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ence Test Method G5.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
G180 − 23
NOTE 3—This process removes machine oils and inhibitors that might
5.5 Electrodes:
be on the surface due to packaging.
5.5.1 Working el
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: G180 − 21 G180 − 23
Standard Test Method for
Corrosion Inhibiting Admixtures for Steel in Concrete by
1
Polarization Resistance in Cementitious Slurries
This standard is issued under the fixed designation G180; 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
1.1 This test method covers a procedure for determining the effects of chemical admixtures on the corrosion of metals in concrete.
This test method can be used to evaluate materials intended to inhibit chloride-induced corrosion of steel in concrete. It can also
be used to evaluate the corrosivity of admixtures by themselves or in a chloride environment. This test is not applicable for
emulsions.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
1.4 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
2
2.1 ASTM Standards:
C150/C150M Specification for Portland Cement
C595/C595M Specification for Blended Hydraulic Cements
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
D632 Specification for Sodium Chloride
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
G3 Practice for Conventions Applicable to Electrochemical Measurements in Corrosion Testing
G5 Reference Test Method for Making Potentiodynamic Anodic Polarization Measurements
G59 Test Method for Conducting Potentiodynamic Polarization Resistance Measurements
G193 Terminology and Acronyms Relating to Corrosion
3. Terminology
3.1 Definitions—For definitions of terms used in this practice see Terminology G193.
1
This test method is under the jurisdiction of ASTM Committee G01 on Corrosion of Metals and is the direct responsibility of Subcommittee G01.14 on Corrosion of
Metals in Construction Materials.
Current edition approved April 1, 2021June 1, 2023. Published April 2021June 2023. Originally approved in 2004. Last previous edition approved in 20192021 as
G180 – 13 (2019).G180 – 21. DOI: 10.1520/G0180-21.10.1520/G0180-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
G180 − 23
4. Significance and Use
4.1 This test method provides a means for assessing corrosion-inhibiting concrete admixtures.
4.2 This test method is useful for development of admixtures intended to reduce corrosion of reinforcing steel in concrete.
4.3 This test method is useful in determining the corrosivity of admixtures toward steel reinforcing if the admixture sample is
compared to a control without admixtures.
4.4 Good performance, a reduction in corrosion rate versus chloride alone by at least one order of magnitude in this test, is a strong
indication that an admixture is a corrosion inhibitor. However, poor performance requires additional testing to determine if the
admixture improves corrosion resistance.
4.5 This test method shall not be used to predict performance in the field.
4.6 The filtering process makes this test not suitable for the evaluation of emulsions.
5. Apparatus
5.1 The test cell as described in Reference Test Method G5.
5.2 Potentiostat, as described in Reference Test Method G5, capable of varying potential at a constant scan rate and measuring
the resulting current.
5.3 A method of recording the varying potential and resulting current is needed.
5.4 Electrode holder such as described in
...