ASTM C1582/C1582M-11(2017)e1

Standard Specification for Admixtures to Inhibit Chloride-Induced Corrosion of Reinforcing Steel in Concrete

ABSTRACT
This specification covers material for use as chloride-corrosion-inhibiting admixtures for concrete. Concrete must meet the physical requirements such as compressive strength and flexural strength. The test admixture must show corrosion-inhibiting performance with the required mean integrated macrocell current of test beams and mean corroded area of test beams as a fraction of control. At the completion of testing, the mean chloride-ion content of the test beams must be greater than or equal to the critical chloride-ion content. Two types of concrete are used to make test specimens. One, the control concrete, is made without the chloride-corrosion-inhibiting admixture. The other concrete, the test concrete, is made with the chloride-corrosion-inhibiting admixture. Tests of freshly mixed concrete include slump test, air content test, and time of setting test. Test of hardened concrete include compressive strength test, flexural strength test, resistance to freezing and thawing test, and length change test. Corrosion testing shall also be done.
SCOPE
1.1 This specification covers material for use as chloride-corrosion-inhibiting admixtures for concrete.  
1.2 Results of the tests conducted to meet this specification are not to be used to rank the expected field performance of various chloride-corrosion-inhibiting admixtures.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 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 requirements prior to use. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2)  
1.5 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: 14-Jun-2017
• ICS: 77.140.15 - Steels for reinforcement of concrete
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.23 - Chemical Admixtures

Relations

• Replaces: ASTM C1582/C1582M-11 - Standard Specification for Admixtures to Inhibit Chloride-Induced Corrosion of Reinforcing Steel in Concrete
• Effective Date: 15-Jun-2017
• Refers: ASTM C231/C231M-24 - Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
• Effective Date: 01-Jan-2024
• Refers: ASTM C39/C39M-23 - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
• Effective Date: 01-Dec-2023
• Refers: ASTM C125-19a - Standard Terminology Relating to Concrete and Concrete Aggregates
• Effective Date: 15-Dec-2019
• Refers: ASTM C150/C150M-19 - Standard Specification for Portland Cement
• Effective Date: 01-Apr-2019
• Refers: ASTM C125-19 - Standard Terminology Relating to Concrete and Concrete Aggregates
• Effective Date: 01-Jan-2019
• Refers: ASTM C125-18b - Standard Terminology Relating to Concrete and Concrete Aggregates
• Effective Date: 01-Oct-2018
• Refers: ASTM C125-18a - Standard Terminology Relating to Concrete and Concrete Aggregates
• Effective Date: 01-Jul-2018
• Refers: ASTM C125-18 - Standard Terminology Relating to Concrete and Concrete Aggregates
• Effective Date: 01-Jan-2018
• Refers: ASTM C157/C157M-17 - Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
• Effective Date: 15-Aug-2017
• Refers: ASTM C39/C39M-17b - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
• Effective Date: 01-Aug-2017
• Refers: ASTM C125-16 - Standard Terminology Relating to Concrete and Concrete Aggregates
• Effective Date: 15-Dec-2016
• Refers: ASTM C78/C78M-15b - Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
• Effective Date: 01-Dec-2016
• Refers: ASTM C39/C39M-16b - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
• Effective Date: 01-Aug-2016
• Refers: ASTM C39/C39M-16a - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
• Effective Date: 01-Jul-2016

Overview

ASTM C1582/C1582M-11(2017)e1 is the internationally recognized standard specification developed by ASTM for admixtures used to inhibit chloride-induced corrosion of reinforcing steel in concrete. This standard sets forth the requirements for materials intended to reduce the risk of corrosion in steel-reinforced concrete structures, particularly those exposed to environments with high chloride concentrations, such as coastal areas, areas treated with de-icing salts, and marine applications. Complying with this specification helps ensure longer-lasting, more durable concrete structures by minimizing the potential for corrosion-related deterioration.

Key Topics

• Scope and Limitations

  • Specifies requirements for chloride-corrosion-inhibiting admixtures added to concrete.
  • Results from laboratory testing are not intended for direct field performance ranking of different admixtures.
  • Values may be stated in either SI units or inch-pound units, but systems should not be mixed.

• Testing and Performance Criteria

  • Admixtures must demonstrate corrosion-inhibiting performance using standardized test methods.
  • Laboratory tests include:
    • Fresh concrete tests: slump, air content, and setting time.
    • Hardened concrete tests: compressive strength, flexural strength, length change (shrinkage), and resistance to freezing and thawing.
    • Corrosion testing: macrocell current measurement and corroded area assessment through methods such as ASTM G109 and G180.

• Comparative Evaluation

  • Testing involves two types of concrete: one with the corrosion inhibitor (test concrete) and one without (control concrete).
  • Both types are subjected to identical conditions for direct comparison of performance.

• Physical Requirements

  • The test concrete must meet minimum performance benchmarks, including strength and durability, relative to the control.
  • Packaging, labeling, and retesting protocols are defined for quality assurance and traceability.

• Safety and Compliance

  • Emphasizes the need for appropriate safety practices due to the caustic nature of fresh concrete mixtures.

Applications

• Infrastructure Protection

  • Used for transportation infrastructure, such as highways, bridges, and parking decks exposed to de-icing salts.
  • Suitable for marine structures, docks, piers, and seawalls subject to high chloride environments.
  • Applicable in building foundations, water treatment plants, and other concrete structures where reinforcement is exposed to potential chloride ingress.

• Construction and Quality Control

  • Assists engineers, architects, material suppliers, and contractors in selecting appropriate admixtures to prolong structural service life.
  • Serves as a procurement and quality control standard for project owners and specifiers, ensuring that supplied admixtures meet defined performance benchmarks.

• Maintenance and Rehabilitation

  • Guides maintenance strategies for existing structures at risk of or currently experiencing corrosion damage.

Related Standards

• ASTM C494/C494M: Specification for Chemical Admixtures for Concrete
• ASTM C39/C39M: Test Method for Compressive Strength of Cylindrical Concrete Specimens
• ASTM C78/C78M: Test Method for Flexural Strength of Concrete
• ASTM G109: Test Method for Effects of Chemical Admixtures on Corrosion of Steel in Concrete Exposed to Chloride Environments
• ASTM G180: Test Method for Corrosion Inhibiting Admixtures for Steel in Concrete by Polarization Resistance
• ACI 211.1: Practice for Selecting Proportions for Normal, Heavyweight, and Mass Concrete
• ASTM C150/C150M: Specification for Portland Cement

Compliance with ASTM C1582/C1582M-11(2017)e1 ensures that chloride-corrosion-inhibiting admixtures are properly evaluated for their effectiveness and compatibility, helping the construction industry build and maintain concrete structures with enhanced durability and resistance to corrosion-related failures.

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.
´1
Designation:C1582/C1582M −11 (Reapproved 2017)
Standard Specification for
Admixtures to Inhibit Chloride-Induced Corrosion of
Reinforcing Steel in Concrete
This standard is issued under the fixed designation C1582/C1582M; 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.
ε NOTE—Standard designations were corrected editorially in July 2017.
1. Scope* 2. Referenced Documents
1.1 This specification covers material for use as chloride- 2.1 ASTM Standards:
C39/C39M Test Method for Compressive Strength of Cylin-
corrosion-inhibiting admixtures for concrete.
drical Concrete Specimens
1.2 Results of the tests conducted to meet this specification
C78/C78M Test Method for Flexural Strength of Concrete
are not to be used to rank the expected field performance of
(Using Simple Beam with Third-Point Loading)
various chloride-corrosion-inhibiting admixtures.
C125 Terminology Relating to Concrete and Concrete Ag-
gregates
1.3 The values stated in either SI units or inch-pound units
C143/C143M Test Method for Slump of Hydraulic-Cement
are to be regarded separately as standard. The values stated in
Concrete
each system may not be exact equivalents; therefore, each
C150/C150M Specification for Portland Cement
system shall be used independently of the other. Combining
C157/C157M Test Method for Length Change of Hardened
values from the two systems may result in non-conformance
Hydraulic-Cement Mortar and Concrete
with the standard.
C231/C231M Test Method forAir Content of Freshly Mixed
1.4 This standard does not purport to address all of the
Concrete by the Pressure Method
safety concerns, if any, associated with its use. It is the
C260/C260M Specification for Air-Entraining Admixtures
responsibility of the user of this standard to establish appro-
for Concrete
priate safety and health practices and determine the applica-
C403/C403M Test Method for Time of Setting of Concrete
bility of regulatory requirements prior to use. (Warning—
Mixtures by Penetration Resistance
Fresh hydraulic cementitious mixtures are caustic and may
C494/C494M Specification for Chemical Admixtures for
cause chemical burns to skin and tissue upon prolonged
Concrete
exposure. ) C666/C666M Test Method for Resistance of Concrete to
Rapid Freezing and Thawing
1.5 This international standard was developed in accor-
C1152/C1152M Test Method for Acid-Soluble Chloride in
dance with internationally recognized principles on standard-
Mortar and Concrete
ization established in the Decision on Principles for the
G15 Terminology Relating to Corrosion and Corrosion Test-
Development of International Standards, Guides and Recom-
ing (Withdrawn 2010)
mendations issued by the World Trade Organization Technical
G109 Test Method for Determining Effects of Chemical
Barriers to Trade (TBT) Committee.
Admixtures on Corrosion of Embedded Steel Reinforce-
ment in Concrete Exposed to Chloride Environments
G180 Test Method for Corrosion Inhibiting Admixtures for
Steel in Concrete by Polarization Resistance in Cementi-
tious Slurries
This specification is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.23 on Chemical Admixtures. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 15, 2017. Published July 2017. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 2004. Last previous edition approved in 2011 as C1582/C1582M – 11. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/C1582_C1582M-11R17E01. the ASTM website.
2 4
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, The last approved version of this historical standard is referenced on
Annual Book of ASTM Standards, Vol 04.02. www.astm.org.
*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
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C1582/C1582M−11 (2017)
TABLE 1 Physical Requirements of Concrete Containing a
2.2 American Concrete Institute Standard:
Chloride-Corrosion-Inhibiting Admixture
ACI 211.1 Practice for Selecting Proportions of Normal,
Time of setting, allowable deviation from control, h:min
Heavyweight, and Mass Concrete
Initial: not more than 3:30 earlier or later
Final: not more than 3:30 earlier or later
3. Terminology
Strength:
3.1 Definitions—Refer to Terminologies C125 and G15 for
Age Compressive strength, Flexural strength,
A,B A,B
definitions of terms used in this specification.
min. % of control: min. % of control:
3 days 80 80
3.2 Definitions of Terms Specific to This Standard:
7 days 80 80
28 days 80 80
3.2.1 chloride-ion content, n—the acid-soluble chloride-ion
6 months 80
content, measured according to Test Method C1152/C1152M,
1 year 80
of a powder sample taken at a depth equal to the depth of
C
reinforcement. Length change, max. shrinkage (alternative requirements)
Percent of control: 135
3.2.2 completion of testing, n—forTest Method G109, when
Increase over control, percentage points: 0.010
the following conditions are satisfied: (1) the mean integrated
Relative durability factor, minimum %: 80
macrocell current in the control beams is greater than or equal
A
The values in the table include allowance for normal variation in test results.The
to 150 coulombs (C); and (2) the mean chloride-ion content of
objective of the 80 % relative strength is to require a level of performance
the test beams is greater than or equal to the critical chloride-
comparable to that of the control concrete. Reinforced concrete, subjected to
ion content. brackish water, salt spray and/or deicers, requires a water-cement ratio of 0.40 or
less for long-term durability. This durability requirement results typically in com-
3.2.2.1 Discussion—Refer to the Appendix for additional
pressive strengths in excess of what is required structurally. If high-strength
explanation of the methodology used to evaluate the perfor-
concrete is needed for structural purposes, mixture proportions may need to be
mance of a chloride-corrosion-inhibiting admixture. adjusted when using a chloride-corrosion-inhibiting admixture.
B
The compressive and flexural strength of the concrete containing the admixture
3.2.3 control beams, n—beams subjected to the treatment in
under test at any test age shall not be less than 90 % of that attained at any
previous test age. The objective of this limit is to require that the compressive or
Test Method G109 that are made from concrete without the
flexural strength of the concrete containing the admixture under test shall not
chloride-corrosion-inhibiting admixture.
decrease with age.
C
Forthealternativerequirements(seeSpecificationC494/C494M),thepercentof
3.2.4 critical chloride-ion content, n—the mean chloride-
control limit applies when length change of the control concrete is 0.030 % or
ion content in the unreinforced control beams at t plus the
greater, and the increase over control limit applies when length change of the
standard deviation.
control concrete is less than 0.030 %.
3.2.5 reinforced beams, n—beams used to measure macro-
cell corrosion current according to Test Method G109.
3.2.6 t ,n—time when the mean integrated macrocell
4.2.2 The performance property retesting shall consist of
current of the control beams reaches 50 C.
time of setting and compressive strength at 3, 7, and 28 days.
3.2.7 t ,n—time when the mean integrated macrocell
Purchasers having special requirements are allowed to require
current of the control beams reaches 150 C.
additional tests currently in this standard.
3.2.8 test beams, n—beams subjected to the treatment in
4.3 At the request of the purchaser, the manufacturer shall
Test Method G109 that are made from concrete with the
state in writing that the admixture supplied for use in the
chloride-corrosion-inhibiting admixture.
project is identical in all essential respects, including
3.2.9 unreinforced beams, n—beams without reinforcement
concentration, to the admixture tested under this specification
that are subjected to the cyclic ponding and drying treatment in
and found to comply therewith.
Test Method G109 and used to determine chloride-ion content.
4.4 Tests for uniformity and equivalence shall be made on
the initial sample in accordance with Specification C494/
4. General Requirements
C494M, and the results retained for reference and comparison
4.1 For initial compliance with this specification, test-
withtheresultsoftestsofsamplestakenfromelsewherewithin
concrete made with the chloride-corrosion-inhibiting admix-
the lot or subsequent lots of admixture supplied for use in the
ture shall conform to the requirements prescribed in Table 1.
project.
4.2 The purchaser is allowed to require a limited retesting to
confirm current compliance of the admixture to specification 5. Corrosion-Inhibiting Performance
requirements.The limited retesting covers physical and chemi-
5.1 In addition to producing concrete that meets the require-
cal properties and performance of the admixture.
ments in Table 1, the test admixture must show corrosion-
4.2.1 The physical properties retesting shall consist of
inhibiting performance as summarized in Table 2 when tested
uniformity and equivalence tests for infrared analysis, residue
in accordance with Test Method G109 with reinforcing bar
by oven drying, and specific gravity as described in Specifica-
depths and mixture proportions as specified in Sections 10 and
tion C494/C494M.
11 of this specification, or in accordance with Test Method
G180 using 0.5 M NaCl as specified in Section 15.
5.2 The following requirements must be attained when Test
Available fromAmerican Concrete Institute (ACI), P.O. Box 9094, Farmington
Hills, MI 48333-9094, http://www.concrete.org. Method G109 is used:
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C1582/C1582M−11 (2017)
TABLE 2 Corrosion-Inhibiting Requirements
by the purchaser and is allowed to be rejected if it fails to
When evaluated using Test Method G109 conform to any of the applicable requirements of this specifi-
Mean integrated macrocell current of test beams, # 50
cation.
A
C
Mean corroded area of test beams, fraction of # ⁄3
9.4 Packages or containers varying more than 5 % from the
A
control
specified mass or volume are allowed to be rejected. If the
average mass or volume of 50 packages taken at random is less
When evaluated using Test Method G180
B
Mean 1/Rp compared to control # ⁄8
than that specified, the entire shipment is allowed to be
A
At completion of testing using Test Method G109 and based on a minimum of
rejected.
three specimens of control and test concrete, and discarded specimens are not
9.5 When the admixture is to be used in non-air-entrained
included.
B
Test Method G180 at 0.5 M NaCl with four control and four test specimens.
concrete, it shall be rejected when the purchaser desires if the
testconcretecontainingithasanaircontentgreaterthan3.5 %;
when the admixture is to be used in air-entrained concrete, it
shall be rejected when the purchaser desires if the test concrete
5.2.1 At completion of testing (see 3.2.2), the mean inte-
containing it has an air content greater than 7.0 %.
grated macrocell current of the test beams must be less than or
equal to 50 C.
TEST METHODS
5.2.2 At completion of testing, the mean corroded area of
NOTE 1—These tests are based on arbitrary stipulations which make
the top reinforcing steel in the test beams must be less than or possible highly standardized testing in the laboratory and are not intended
1 to simulate actual job conditions.
equal to ⁄3 of the mean corroded area of the top steel in the
control beams.
10. Test Specimens
5.2.3 At the completion of testing, the mean chloride-ion
10.1 Twotypesofconcreteareusedtomaketestspecimens.
content of the test beams must be greater than or equal to the
One, the control concrete, is made without the chloride-
critical chloride-ion content.
corrosion-inhibiting admixture. The other concrete, the test
5.3 If Test Method G180 is used, the average polarization
concrete, is made with the chloride-corrosion-inhibiting ad-
resistance, R , of the test specimens with the corrosion inhibi-
p
mixture. Do not use cement that causes the air content of the
tor shall be at least 8 times greater than that of the control
control concrete made without the subject admixture to exceed
specimens.
3.0 %.
10.2 Make specimens for measuring compressive strength,
6. Packaging and Package Marking
flexuralstrength,resistancetofreezingandthawing,andlength
6.1 When the admixture is delivered in packages or
change in accordance with Specification C494/C494M. Pre-
containers, the proprietary name of the admixture and the net
pare three separate batches of each concrete mixture in
mass or volume shall be plainly marked thereon. Similar
accordance with Specification C494/C494M, and report the
information shall be provided in the shipping information
mean test results from the three batches.
accompanying packaged or bulk shipments of admixtures.
10.3 When corrosion performance will be determined by
7. Storage Test Method G109, make specimens for corrosion testing and
chloride-ion analysis from a separate batch of each concrete.
7.1 Store the admixture so as to permit easy access for
Foreachconcretemixture,makeatleastthreebeamswithsteel
proper inspection and identification of each shipment, and in a
reinforcement in accordance with Test Method G109, and
suitable weather-tight building that will protect the admixture
make at least three beams of the same size without reinforce-
from dampness and freezing.
ment (Note 2). The reinforcement shall be deformed bars
designation No. 4 [13] with a nominal diameter of ⁄2 in. [12.7
8. Sampling and Inspection
mm] and the cover depth shall be 1.0 6 0.1 in. [25 6 3 mm].
8.1 Sampling and inspection shall be in accordance with
Subject all beams to the same cyclic ponding and drying
Specification C494/C494M.
treatment described in Test Method G109.
NOTE 2—The reinforced beams are used to determine the macrocell
9. Rejection
corrosion current as a function of time, and the unreinforced beams are
used to determine the chloride-ion content at specified times.
9.1 For initial compliance testing, the purchaser is allowed
to reject the admixture if it fails to meet any of the applicable
11. Specimen Preparation
requirements for this specification.
11.1 Mixture Proportions—Proportion all concrete mixtures
9.2 For limited retesting, the purchaser is allowed to reject
to conform to the requirements described in 11.1.1 through
the admixture if it fails to meet any of the requirements of the
11.1.5. Unless otherwise specified, include the chloride-
Uniformity and Equivalence Section of Specification C494/
corrosion-inhibiting admixture with the first increment of
C494M and of the applicable parts of Table 1 of this standard.
mixing water that is added to the mixer.
9.3 An admixture stored at the point of manufacture, for 11.1.1 The water-cement ratio shall be 0.50 6 0.01 and the
more than 6 months prior to shipment, or an admixture in local cement content shall be between 550 and 650 lb/yd [325 and
storage in the hands of a vendor for more than 6 months, after 385kg/m ].Thetestandcontrolmixturesaretohavewaterand
completionoftests,shallberetestedbeforeusewhenrequested cement contents equivalent to within 6 1 % by mass.
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C1582/C1582M−11 (2017)
11.1.2 Cement shall meet the requirements of a Type II 12.3 Time of Setting—Test Method C403/C403M. Store the
cement according to Specification C150/C150M. time-of-setting specimens at 73.5 6 3.5 °F [23.0 6 2.0 °C]
during the test period.
NOTE 3—Type II cement is used to limit the tricalcium aluminate (C A)
content and is not intended as design guidance for specific projects.
13. Tests of Hardened Concrete
11.1.3 The grading of the coarse aggregate shall comply
13.1 Compressive Strength—Test Method C39/C39M. Mea-
with size number 7 or 8 of Specification C33, that is, the
sure compressive strength at ages of 3 days, 7 days, 28 days, 6
1 3
nominal maximum size is ⁄2 in. [12.5 mm] or ⁄8 in. [9.5 mm].
months, and 1 year. For each test age, divide the mean strength
For the first trial mixture, refer to ACI 211.1 for guidance on
of the test concrete specimens by the mean strength of the
the amount of coarse aggregate to use based on the fineness
control concrete specimens and multiply the quotient by 100.
modulus of the fine aggregate.
13.2 Flexural Strength—Test Method C78/C78M. Measure
NOTE 4—Tabulated values of coarse aggregate content given in ACI
flexural strength at ages of 3, 7, and 28 days. For each test age,
211.1 are intended to ensure workable mixtures with the least favorable
combinations of aggregate likely to be used. It is suggested, therefore, that
divide the mean strength of the test concrete specimens by the
for a closer approximation of the required proportions, the volume of
mean strength of the control concrete specimens and multiply
coarseaggregate(inthedry-roddedcondition)perunitvolumeofconcrete
the quotient by 100.
selected from ACI 211.1 be increased by about 0.07 for the first trial
mixture.
13.3 Resistance to Freezing and Thawing—Test Method
C666/C666M, Procedure A. Calculate the relative durability
11.1.4 For air-entrained concrete, the air content of the fresh
factor in accordance with Specification C260/C260M.
concrete shall be 6 6 1 % as measured according to Test
Method C231/C231M. For concrete that is not air-entrained,
13.4 Length Change—Test Method C157/C157M as modi-
the air content of the fresh concrete shall be less than 3.5 % as
fied by Specification C494/C494M.
measured according to Test Method C231/C231M.
14. Corrosion Testing When Using Test Method G109
11.1.5 The slump shall be greater than or equal to 3 in. [75
mm] and less than or equal to 8 in. [200 mm] as measured
14.1 General—Test the corrosion performance of the rein-
according to Test Method C143/C143M. The use of a water-
forced control beams and the reinforced test beams according
reducing admixture is not prohibited to obtain the required
to Test Method G109, except as noted in this specification.
slump, but the same quantity must be used in the control
Subject the reinforced and unreinforced beams to the same
concrete and in the test concrete.
cyclic ponding and drying process that is described in Test
11.2 Quantity of Concrete—Prepare concrete mixtures with Method G109. Chloride-ion content measurements are made
when the mean integrated macrocell current in the control
and without the chloride-corrosion-inhibiting admixture in
sufficient volume to produce specimens needed for performing beams reaches 50 C and 150 C. The criteria for completion of
testing are specified in 3.2.2.
the tests listed in Table 1 and for corrosion testing.
NOTE 5—The required quantity of concrete for each batch depends on NOTE 6—Appendix X1 provides a flowchart to explain further the
corrosion testing procedure. The flowchart includes references to the
the number of extra specimens that are cast. It is recommended that more
than the required minimum number of specimens be cast in case some of corresponding section numbers in this specification.
them are faulty. If one time of setting specimen and the minimum number
14.2 Tests at t —Measure the integrated macrocell current
of 6- by 12-in. [150- by 300-mm ] cylinders, 3- by 4- by 16-in. [75- by
in the reinforced beams as specified in Test Method G109.
...