ASTM G180-07
(Test Method)Standard Test Method for Initial Screening of Corrosion Inhibiting Admixtures for Steel in Concrete
Standard Test Method for Initial Screening of Corrosion Inhibiting Admixtures for Steel in Concrete
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 &solely-SI-units;
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.
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Designation: G180 − 07
StandardTest Method for
Initial Screening of Corrosion Inhibiting Admixtures for
1
Steel in Concrete
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.
3
1. Scope ing (Withdrawn 2010)
G59 Test Method for Conducting Potentiodynamic Polariza-
1.1 This test method covers a procedure for determining the
tion Resistance Measurements
effects of chemical admixtures on the corrosion of metals in
concrete. This test method can be used to evaluate materials
3. Terminology
intended to inhibit chloride-induced corrosion of steel in
3.1 Definitions—For definitions of terms used in this prac-
concrete. It can also be used to evaluate the corrosivity of
tice see Terminology G15.
admixtures by themselves or in a chloride environment. This
test is not applicable for emulsions.
4. Significance and Use
1.2 The values stated in SI units are to be regarded as
4.1 This test method provides a means for assessing
standard. No other units of measurement are included in this
corrosion-inhibiting concrete admixtures.
standard.
4.2 This test method is useful for development of admix-
1.3 This standard does not purport to address all of the
tures intended to reduce corrosion of reinforcing steel in
safety concerns, if any, associated with its use. It is the
concrete.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4.3 This test method is useful in determining the corrosivity
bility of regulatory limitations prior to use.
of admixtures toward steel reinforcing if the admixture sample
is compared to a control without admixtures.
2. Referenced Documents
4.4 Good performance, a reduction in corrosion rate versus
2
2.1 ASTM Standards:
chloride alone by at least one order of magnitude in this test, is
C150 Specification for Portland Cement
a strong indication that an admixture is a corrosion inhibitor.
C670 Practice for Preparing Precision and Bias Statements
However, poor performance requires additional testing to
for Test Methods for Construction Materials
determine if the admixture improves corrosion resistance.
D632 Specification for Sodium Chloride
4.5 Thistestmethodisascreeningtestandshallnotbeused
E691 Practice for Conducting an Interlaboratory Study to
to predict performance in the field. However, it is useful to
Determine the Precision of a Test Method
determine which admixtures shall be included into long-term
G3 Practice for Conventions Applicable to Electrochemical
evaluation programs.
Measurements in Corrosion Testing
G5 Reference Test Method for Making Potentiostatic and 4.6 The filtering process makes this test not suitable for the
evaluation of emulsions.
Potentiodynamic Anodic Polarization Measurements
G15 Terminology Relating to Corrosion and Corrosion Test-
5. Apparatus
5.1 The test cell as described in Test Method G5.
5.2 Potentiostat, as described inTest Method G5, capable of
1
This test method is under the jurisdiction of ASTM Committee G01 on varying potential at a constant scan rate and measuring the
Corrosion of Metals and is the direct responsibility of Subcommittee G01.14 on
resulting current.
Corrosion of Metals in Construction Materials.
Current edition approved Nov. 1, 2007. Published December 2007. Originally 5.3 A method of recording the varying potential and result-
approved in 2004. Last previous edition approved in 2004 as G180–04. DOI:
ing current is needed.
10.1520/G0180-07.
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
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
G180 − 07
5.4 Electrode holder such as described in Fig. 3 of Test 7.5.1 Add NaCl to the solution obtained in 7.3 (having been
Method G5. purged for 24 h with CO -free air), to obtain a 0.5 or a 1M
2
solution, and continue to stir and purge for a further 4 h.After
5.5 Electrodes:
4 h, stop stirring and continue purging for a another 20 h.
5.5.1 Workingelectrode,preparedfroma12.7mmlengthof
9.5 mm diameter rod stock. Carbon steel C1215 should be
NOTE 3—The multi-laboratory test was run at the two different chloride
levels to develop the precision statement. The higher chloride level
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:G180–04 Designation:G180–07
Standard Test Method for
Initial Screening of Corrosion Inhibiting Admixtures for
1
Steel in Concrete
This standard is issued under the fixed designation G 180; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method describescovers 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.
1.2Units—The1.2 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:
C 150 Specification for Portland Cement
C 670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
D 632 Specification for Sodium Chloride
E 691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
G 3 Practice for Conventions Applicable to Electrochemical Measurements in Corrosion Testing
G 5 Reference Test Method for Making Potentiostatic and Potentiodynamic Anodic Polarization Measurements
G 15 Terminology Relating to Corrosion and Corrosion Testing
G 59 Test Method for Conducting Potentiodynamic Polarization Resistance Measurements
3. Terminology
3.1 Definitions—For definitions of terms used in this practice see Terminology G 15.
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 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.
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 Concrete, Mortar, or Cement.
Current edition approved July 1, 2004. Published July 2004.
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, 2007. Published December 2007. Originally approved in 2004. Last previous edition approved in 2004 as G 180–04.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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 ----------------------
G180–07
5. Apparatus
5.1 The test cell as described in Test Method G 5.
5.2 Potentiostat, as described in Test Method G 5, 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 G 5.
5.5 Electrodes:
5.5.1 Working electrode, prepared from
...
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