ASTM C1760-12

Standard Test Method for Bulk Electrical Conductivity of Hardened Concrete (Withdrawn 2021)

SIGNIFICANCE AND USE
This test method measures the bulk electrical conductivity of concrete, which has a theoretical relationship to the diffusion coefficient of chloride ion, or other ions, in the concrete (1, 2). Experimental data confirm that there is a correlation between the apparent chloride diffusion coefficient measured by Test Method C1556, or similar method, and the bulk electrical conductivity (3, 4).
A number of factors are known to affect electrical conductivity of concrete: water cementitious materials ratio, the type and amount of supplementary cementitious materials, presence of polymeric admixtures, admixtures that contain soluble salts, specimen age, air-void system, aggregate type, degree of consolidation, degree of saturation, and type of curing. Different curing methods are used in this test method depending on whether the concrete contains supplementary cementitious materials. Use the same method and duration of curing when comparing mixtures.
This test method is suitable for evaluation of concrete mixtures for proportioning purposes and for research and development. Specimens must be sufficiently saturated for measured electrical conductivity to provide an indication of the resistance of the concrete to chloride ion penetration. Because the electrical conductivity depends upon the degree of saturation, specimens are vacuum saturated before testing to ensure a common reference state for comparison purposes. If the specimen is tested in a partially saturated, or “as delivered” state, it shall be noted in the test report.
This test can be used to evaluate the electrical conductivity of concretes in structures for applications that may require such information, such as the design of cathodic protection systems.
The type of specimen and conditioning procedure depends on the purpose of the test. For evaluation of concrete mixtures, specimens are 100 mm diameter molded cylinders that are moist cured up to the time of testing. For evaluation of concrete samples ta...
SCOPE
1.1 This test method covers the determination of the bulk electrical conductivity of saturated specimens of hardened concrete to provide a rapid indication of the concrete's resistance to the penetration of chloride ions by diffusion (See Note 1). The results of this test method can be related to the apparent chloride diffusion coefficient that is determined using Test Method C1556.
Note 1—The term “bulk” is used because the electrical conductivity is determined by measuring the current passing through all the phases of a test specimen (e.g., cement paste, sand, aggregate). This is accomplished using electrodes that cover the ends of the specimen. Other test methods that measure conductivity may use probes placed on the side surface of the specimen.
1.2 Units—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. (WarningFresh hydraulic cementitious mixtures are caustic and may cause chemical burns to exposed skin and tissue upon prolonged exposure. )
WITHDRAWN RATIONALE
This test method covers the determination of the bulk electrical conductivity of saturated specimens of hardened concrete to provide a rapid indication of the concrete's resistance to the penetration of chloride ions by diffusion (See Note 1). The results of this test method can be related to the apparent chloride diffusion coefficient that is determined using Test Method C1556.
Formerly under the jurisdiction of Committee C09 on Concrete and Concrete Aggregates, this test method was withdrawn in January 2021 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committe...

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-2011
• Withdrawal Date: 21-Jan-2021
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.66 - Concrete's Resistance to Fluid Penetration

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: C1760 − 12
Standard Test Method for
1
Bulk Electrical Conductivity of Hardened Concrete
This standard is issued under the fixed designation C1760; 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 C192/C192M Practice for Making and Curing ConcreteTest
Specimens in the Laboratory
1.1 This test method covers the determination of the bulk
C511 Specification for Mixing Rooms, Moist Cabinets,
electrical conductivity of saturated specimens of hardened
Moist Rooms, and Water Storage Tanks Used in the
concrete to provide a rapid indication of the concrete’s
Testing of Hydraulic Cements and Concretes
resistance to the penetration of chloride ions by diffusion (See
C1202 Test Method for Electrical Indication of Concrete’s
Note 1). The results of this test method can be related to the
Ability to Resist Chloride Ion Penetration
apparent chloride diffusion coefficient that is determined using
C1543 Test Method for Determining the Penetration of
Test Method C1556.
Chloride Ion into Concrete by Ponding
NOTE 1—The term “bulk” is used because the electrical conductivity is
C1556 Test Method for Determining the Apparent Chloride
determined by measuring the current passing through all the phases of a
test specimen (e.g., cement paste, sand, aggregate). This is accomplished
Diffusion Coefficient of Cementitious Mixtures by Bulk
using electrodes that cover the ends of the specimen. Other test methods
Diffusion
thatmeasureconductivitymayuseprobesplacedonthesidesurfaceofthe
specimen.
3. Terminology
1.2 Units—The values stated in SI units are to be regarded
3.1 Definitions:
as standard. No other units of measurement are included in this
3.1.1 For definitions of terms used in this test method, refer
standard.
to Terminology C125.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 This test method measures the electrical current through
priate safety and health practices and determine the applica-
a saturated concrete specimen with a potential difference of 60
bility of regulatory limitations prior to use. (Warning—Fresh
V dc maintained across the ends of the specimen. Test
hydraulic cementitious mixtures are caustic and may cause
specimens can be 100 mm diameter by 200 mm long molded
chemical burns to exposed skin and tissue upon prolonged
cylinders or nominal 100 diameter cores with length ranging
2
exposure. )
from100to200mm.Theapparatusandspecimenconditioning
procedures are the same as described in Test Method C1202,
2. Referenced Documents
except that the side of the specimen does not have to be sealed.
3
2.1 ASTM Standards:
The current is measured 1 min after the voltage is first applied.
C31/C31M Practice for Making and Curing Concrete Test
The measured current, the applied voltage, and the specimen
Specimens in the Field
dimensions are used to calculate the bulk electrical conductiv-
C42/C42M Test Method for Obtaining and Testing Drilled
ity of the concrete.
Cores and Sawed Beams of Concrete
C125 Terminology Relating to Concrete and Concrete Ag-
5. Significance and Use
gregates
5.1 This test method measures the bulk electrical conduc-
tivity of concrete, which has a theoretical relationship to the
1
This test method is under the jurisdiction of ASTM Committee C09 on
diffusion coefficient of chloride ion, or other ions, in the
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee 4
concrete (1, 2). Experimental data confirm that there is a
C09.66 on Concrete’s Resistance to Fluid Penetration.
correlation between the apparent chloride diffusion coefficient
Current edition approved Jan. 1, 2012. Published February 2012. DOI: 10.1520/
C1760-12.
measured by Test Method C1556, or similar method, and the
2
See section on Safety Precautions, Manual of Aggregate and Concrete Testing,
bulk electrical conductivity (3, 4).
Annual Book of ASTM Standards, Vol. 04.02.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4
Standards volume information, refer to the standard’s Document Summary page on The boldface numbers in parentheses refer to a list of references at the end of
the ASTM website. this standard.
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C1760 − 12
NOTE 4—Other admixtures that provide large qua
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