ASTM G180-13
(Test Method)Standard Test Method for Corrosion Inhibiting Admixtures for Steel in Concrete by Polarization Resistance in Cementitious Slurries
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 and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Relations
Buy Standard
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: G180 − 13
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 3. Terminology
1.1 This test method covers a procedure for determining the 3.1 Definitions—For definitions of terms used in this prac-
effects of chemical admixtures on the corrosion of metals in tice see Terminology G193.
concrete. This test method can be used to evaluate materials
4. Significance and Use
intended to inhibit chloride-induced corrosion of steel in
concrete. It can also be used to evaluate the corrosivity of
4.1 This test method provides a means for assessing
admixtures by themselves or in a chloride environment. This
corrosion-inhibiting concrete admixtures.
test is not applicable for emulsions.
4.2 This test method is useful for development of admix-
1.2 The values stated in SI units are to be regarded as
tures intended to reduce corrosion of reinforcing steel in
standard. No other units of measurement are included in this
concrete.
standard.
4.3 This test method is useful in determining the corrosivity
1.3 This standard does not purport to address all of the
of admixtures toward steel reinforcing if the admixture sample
safety concerns, if any, associated with its use. It is the
is compared to a control without admixtures.
responsibility of the user of this standard to establish appro-
4.4 Good performance, a reduction in corrosion rate versus
priate safety and health practices and determine the applica-
chloride alone by at least one order of magnitude in this test, is
bility of regulatory limitations prior to use.
a strong indication that an admixture is a corrosion inhibitor.
However, poor performance requires additional testing to
2. Referenced Documents
determine if the admixture improves corrosion resistance.
2
2.1 ASTM Standards:
4.5 This test method shall not be used to predict perfor-
C150 Specification for Portland Cement
mance in the field.
C670 Practice for Preparing Precision and Bias Statements
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
G3 Practice for Conventions Applicable to Electrochemical
5.1 The test cell as described in Test Method G5.
Measurements in Corrosion Testing
5.2 Potentiostat, as described inTest Method G5, capable of
G5 Reference Test Method for Making Potentiodynamic
varying potential at a constant scan rate and measuring the
Anodic Polarization Measurements
resulting current.
G59 Test Method for Conducting Potentiodynamic Polariza-
tion Resistance Measurements 5.3 A method of recording the varying potential and result-
G193 Terminology and Acronyms Relating to Corrosion ing current is needed.
5.4 Electrode holder such as described in Fig. 3 of Test
Method G5.
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
5.5 Electrodes:
Corrosion of Metals in Construction Materials.
5.5.1 Workingelectrode,preparedfroma12.7mmlengthof
Current edition approved May 1, 2013. Published May 2013. Originally
9.5 mm diameter rod stock. Carbon steel C1215 should be
approved in 2004. Last previous edition approved in 2007 as G180 – 07. DOI:
10.1520/G0180-13.
used.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 1—If specimen forms are used other than those called for by this
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on test method, for example flat sheet specimens, care should be taken not to
the ASTM website. introduce crevices which can lead to erroneous results.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
G180 − 13
5.6 Auxiliary Electrodes—Two graphite rods or platinized- 7.5.3 Measure the polarization resistance (R ) by recording
p
niobium or platinum mesh. the potentiodynamic polarization curve at a scan rate of
0.167 mV⁄s, from –20 mV to +20 mV versus open circuit
5.7 Reference Electrodes—A saturated calomel electrode
potential.
with a controlled rate of leakage (about 3 µL/h) is recom-
7.5.4 Plot the polari
...
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 − 07 G180 − 13
Standard Test Method for
Initial Screening of Corrosion Inhibiting Admixtures for
Steel in Concrete by Polarization Resistance in
1
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
C150 Specification for Portland Cement
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
3
G15 Terminology Relating to Corrosion and Corrosion Testing (Withdrawn 2010)
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 G15G193.
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.
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 Nov. 1, 2007May 1, 2013. Published December 2007May 2013. Originally approved in 2004. Last previous edition approved in 20042007 as
G180G180 – 07.–04. DOI: 10.1520/G0180-07.10.1520/G0180-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. 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 − 13
4.5 This test method is a screening test and shall not be used to predict performance in the field. However, it is useful to
determine which admixtures shall be included into long-term evaluation programs.
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 Test Method G5.
5.2 Potentiostat, as described in 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 Fig. 3 of Test Method G5.
5.5 Electrodes:
5.5.1 Working electrode, prepared from a 12.7 mm length of 9.5 mm diameter rod stock. Carbon steel C1215 should be used.
NOTE 1—If specimen forms are use
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.