ASTM C1202-09
(Test Method)Standard Test Method for Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration
Standard Test Method for Electrical Indication of Concrete's Ability to Resist Chloride Ion Penetration
SIGNIFICANCE AND USE
This test method covers the laboratory evaluation of the electrical conductance of concrete samples to provide a rapid indication of their resistance to chloride ion penetration. In most cases the electrical conductance results have shown good correlation with chloride ponding tests, such as AASHTO T259, on companion slabs cast from the same concrete mixtures (Refs 1-5).
This test method is suitable for evaluation of materials and material proportions for design purposes and research and development.
Sample age has significant effects on the test results, depending on the type of concrete and the curing procedure. Most concretes, if properly cured, become progressively and significantly less permeable with time.
This test method was developed originally for evaluations of alternative materials, but in practice its use has evolved to applications such as quality control and acceptance testing. In such cases it is imperative that the curing procedures and the age at time of testing be clearly specified.
Table 1 provides a qualitative relationship between the results of this test and the chloride ion penetrability of concrete.
Care should be taken in interpreting results of this test when it is used on surface-treated concretes, for example, concretes treated with penetrating sealers. The results from this test on some such concretes indicate low resistance to chloride ion penetration, while 90-day chloride ponding tests on companion slabs show a higher resistance.
The details of the test method apply to 4-in. (102-mm) nominal diameter specimens. This includes specimens with actual diameters ranging from 3.75 in. (95 mm) to 4.0 in. (102 mm). Other specimen diameters may be tested with appropriate changes in the applied voltage cell design (see 7.5 and Fig. 1).
For specimen diameters other than 3.75 in. (95 mm), the test result value for total charge passed must be adjusted following the procedure in 11.2. For specimens with diameters less than 3.75 in. (9...
SCOPE
1.1 This test method covers the determination of the electrical conductance of concrete to provide a rapid indication of its resistance to the penetration of chloride ions. This test method is applicable to types of concrete where correlations have been established between this test procedure and long-term chloride ponding procedures such as those described in AASHTO T 259. Examples of such correlations are discussed in Refs 1-5.
1.2 The values stated in inch-pound units are to be regarded as the standard, except where SI units are given first followed by inch-pound units in parentheses. The values given in parentheses are for information only.
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:C1202–09
Standard Test Method for
Electrical Indication of Concrete’s Ability to Resist Chloride
1
Ion Penetration
This standard is issued under the fixed designation C1202; 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.
4
1. Scope* ride Ion Penetration
1.1 This test method covers the determination of the elec-
3. Summary of Test Method
trical conductance of concrete to provide a rapid indication of
3.1 This test method consists of monitoring the amount of
its resistance to the penetration of chloride ions. This test
electrical current passed through 2-in. (51-mm) thick slices of
method is applicable to types of concrete where correlations
4-in. (102-mm) nominal diameter cores or cylinders during a
have been established between this test procedure and long-
6-h period. A potential difference of 60 V dc is maintained
term chloride ponding procedures such as those described in
across the ends of the specimen, one of which is immersed in
AASHTO T 259. Examples of such correlations are discussed
2 a sodium chloride solution, the other in a sodium hydroxide
in Refs 1-5.
solution. The total charge passed, in coulombs, has been found
1.2 The values stated in inch-pound units are to be regarded
to be related to the resistance of the specimen to chloride ion
as the standard, except where SI units are given first followed
penetration.
by inch-pound units in parentheses. The values given in
parentheses are for information only.
4. Significance and Use
1.3 This standard does not purport to address all of the
4.1 This test method covers the laboratory evaluation of the
safety concerns, if any, associated with its use. It is the
electrical conductance of concrete samples to provide a rapid
responsibility of the user of this standard to establish appro-
indication of their resistance to chloride ion penetration. In
priate safety and health practices and determine the applica-
most cases the electrical conductance results have shown good
bility of regulatory limitations prior to use.
correlation with chloride ponding tests, such as AASHTO
T 259, on companion slabs cast from the same concrete
2. Referenced Documents
3
mixtures (Refs 1-5).
2.1 ASTM Standards:
4.2 This test method is suitable for evaluation of materials
C42/C42M Test Method for Obtaining and Testing Drilled
and material proportions for design purposes and research and
Cores and Sawed Beams of Concrete
development.
C192/C192M Practice for Making and Curing Concrete
4.3 Sample age has significant effects on the test results,
Test Specimens in the Laboratory
depending on the type of concrete and the curing procedure.
C670 Practice for Preparing Precision and Bias Statements
Most concretes, if properly cured, become progressively and
for Test Methods for Construction Materials
significantly less permeable with time.
2.2 AASHTO Standard:
4.4 This test method was developed originally for evalua-
T 259 Method of Test for Resistance of Concrete to Chlo-
tionsofalternativematerials,butinpracticeitsusehasevolved
to applications such as quality control and acceptance testing.
In such cases it is imperative that the curing procedures and the
1
This test method is under the jurisdiction of ASTM Committee C09 on
age at time of testing be clearly specified.
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
4.5 Table 1 provides a qualitative relationship between the
C09.66 on Concrete’s Resistance to Fluid Penetration.
results of this test and the chloride ion penetrability of
Current edition approved May 1, 2009. Published May 2009. Originally
approved in 1991. Last previous edition approved in 2008 as C1202 – 08. DOI:
concrete.
10.1520/C1202-09.
4.6 Care should be taken in interpreting results of this test
2
The boldface numbers in parentheses refer to the list of references at the end of
when it is used on surface-treated concretes, for example,
this standard.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or concretes treated with penetrating sealers.The results from 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
the ASTM website.
4
Methods of Sampling and Testing, 1986, American Association of State
Highway and Transportation Officials, 444 N. Capitol St., NW, Washington, DC
20001.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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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:C1202–08 Designation:C1202–09
Standard Test Method for
Electrical Indication of Concrete’s Ability to Resist Chloride
1
Ion Penetration
This standard is issued under the fixed designation C 1202; 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 the determination of the electrical conductance of concrete to provide a rapid indication of its
resistance to the penetration of chloride ions. This test method is applicable to types of concrete where correlations have been
established between this test procedure and long-term chloride ponding procedures such as those described in AASHTO T 259.
2
Examples of such correlations are discussed in Refs 1-5.
1.2 The values stated in inch-pound units are to be regarded as the standard, except where SI units are given first followed by
inch-pound units in parentheses. The values given in parentheses are for information only.
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
3
2.1 ASTM Standards:
C 42/C 42M Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
C 192/C 192M Practice for Making and Curing Concrete Test Specimens in the Laboratory
C 670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
2.2 AASHTO Standard:
4
T 259 Method of Test for Resistance of Concrete to Chloride Ion Penetration
3. Summary of Test Method
3.1 This test method consists of monitoring the amount of electrical current passed through 2-in. (51-mm) thick slices of 4-in.
(102-mm) nominal diameter cores or cylinders during a 6-h period.Apotential difference of 60 V dc is maintained across the ends
ofthespecimen,oneofwhichisimmersedinasodiumchloridesolution,theotherinasodiumhydroxidesolution.Thetotalcharge
passed, in coulombs, has been found to be related to the resistance of the specimen to chloride ion penetration.
4. Significance and Use
4.1 This test method covers the laboratory evaluation of the electrical conductance of concrete samples to provide a rapid
indication of their resistance to chloride ion penetration. In most cases the electrical conductance results have shown good
correlation with chloride ponding tests, such as AASHTO T259, on companion slabs cast from the same concrete mixtures (Refs
1-5).
4.2 This test method is suitable for evaluation of materials and material proportions for design purposes and research and
development.
4.3 Sample age has significant effects on the test results, depending on the type of concrete and the curing procedure. Most
concretes, if properly cured, become progressively and significantly less permeable with time.
4.4 This test method was developed originally for evaluations of alternative materials, but in practice its use has evolved to
applications such as quality control and acceptance testing. In such cases it is imperative that the curing procedures and the age
at time of testing be clearly defined. specified.
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.66 on
Concrete’s Resistance to Fluid Penetration.
Current edition approved Dec. 15, 2008.May 1, 2009. Published JanuaryMay 2009. Originally approved in 1991. Last previous edition approved in 20072008 as
C 1202 – 078.
2
The boldface numbers in parentheses refer to the list of references at the end of this standard.
3
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. ForAnnualBookofASTMStandards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Methods of Sampling and Testing, 1986, American Association of State Highway and Transportation Officials, 444 N. Capitol St., NW, Washington, DC 20001.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
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