ASTM C684-99(2003)

Standard Test Method for Making, Accelerated Curing, and Testing Concrete Compression Test Specimens (Withdrawn 2012)

SIGNIFICANCE AND USE
The accelerated curing procedures provide, at the earliest practical time, an indication of the potential strength of a specific concrete mixture. These procedures also provide information on the variability of the production process for use in quality control.
The accelerated early strength obtained from any of the procedures in this test method can be used to evaluate concrete strengths in the same way conventional 28-day strengths have been used in the past, with suitable changes in the expected strength values. Since the practice of using strength values obtained from standard-cured cylinders at 28 days is long established and widespread, the results of accelerated strength tests are often used to estimate the later-age strength under standard curing. Such estimates should be limited to concretes using the same materials and mixture proportions as those used for establishing the correlation. Appendix X2 provides a procedure to estimate the 90 % confidence interval of the average later-age strength based on accelerated strength test results.
Correlation between accelerated strength and strength achieved at some later age by using conventional curing methods depends upon the materials comprising the concrete, the mixture proportions, and the specific accelerated test procedure.
The user shall choose which procedure to use on the basis of experience and local conditions. These procedures, in general, will be practical when a field laboratory is available to house the curing containers and the testing equipment to measure compressive strength within the specified time limits.
SCOPE
1.1 This test method covers four procedures for making, curing, and testing specimens of concrete stored under conditions intended to accelerate the development of strength. The four procedures are: Procedure A-Warm Water Method, Procedure B-Boiling Water Method, Procedure C-Autogenous Curing Method, and Procedure D-High Temperature and Pressure Method.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information purposes 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. See Section 9 and Note 9 and 14 for specific warnings and precautions.
WITHDRAWN RATIONALE
This test method covers four procedures for making, curing, and testing specimens of concrete stored under conditions intended to accelerate the development of strength. The four procedures are: Procedure AWarm Water Method, Procedure BBoiling Water Method, Procedure CAutogenous Curing Method, and Procedure DHigh Temperature and Pressure Method.
Formerly under the jurisdiction of Committee C09 on Concrete and Concrete Aggregates, this test method was withdrawn in April 2012 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

• Status: Withdrawn
• Publication Date: 09-Nov-1999
• Withdrawal Date: 17-Apr-2012
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.61 - Testing for Strength

Relations

• Replaces: ASTM C684-99 - Standard Test Method for Making, Accelerated Curing, and Testing Concrete Compression Test Specimens
• Effective Date: 10-Nov-1999

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: C684 – 99 (Reapproved 2003)
Standard Test Method for
Making, Accelerated Curing, and Testing Concrete
1
Compression Test Specimens
This standard is issued under the fixed designation C684; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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 Concrete
Test Specimens in the Laboratory
1.1 This test method covers four procedures for making,
C470/C470M Specification for Molds for Forming Con-
curing, and testing specimens of concrete stored under condi-
crete Test Cylinders Vertically
tions intended to accelerate the development of strength. The
C617 Practice for Capping Cylindrical Concrete Specimens
four procedures are: Procedure A—Warm Water Method,
C1231/C1231M Practice for Use of Unbonded Caps in
Procedure B—Boiling Water Method, Procedure
Determination of Compressive Strength of Hardened Con-
C—Autogenous Curing Method, and Procedure D—High
crete Cylinders
Temperature and Pressure Method.
D3665 Practice for Random Sampling of Construction Ma-
1.2 The values stated in SI units are to be regarded as
terials
standard. The values given in parentheses are provided for
E105 Practice for Probability Sampling of Materials
information purposes only.
E122 Practice for Calculating Sample Size to Estimate,
1.3 This standard does not purport to address all of the
With Specified Precision, the Average for a Characteristic
safety concerns, if any, associated with its use. It is the
of a Lot or Process
responsibility of the user of this standard to establish appro-
E141 Practice for Acceptance of Evidence Based on the
priate safety and health practices and determine the applica-
Results of Probability Sampling
bility of regulatory limitations prior to use. See Section 9 and
Note 9 and Note 14 for specific warnings and precautions.
3. Terminology
2. Referenced Documents 3.1 There are no terms in this standard that require new or
2
other than dictionary definitions.
2.1 ASTM Standards:
C31/C31M Practice for Making and Curing Concrete Test
4. Summary of Test Method
Specimens in the Field
4.1 Concrete specimens are exposed to accelerated curing
C39/C39M Test Method for Compressive Strength of Cy-
conditions that permit the specimens to develop a significant
lindrical Concrete Specimens
portion of their ultimate strength within a time period ranging
C172 Practice for Sampling Freshly Mixed Concrete
from 5 to 49 h, depending upon the procedure that is used.
C177 Test Method for Steady-State Heat Flux Measure-
Procedures A and B utilize storage of specimens in heated
ments and Thermal Transmission Properties by Means of
water at elevated curing temperatures without moisture loss.
the Guarded-Hot-Plate Apparatus
The primary function of the moderately heated water used in
Procedure A is to serve as insulation to conserve the heat
1
This test method is under the jurisdiction of ASTM Committee C09 on generated by hydration. The temperature level employed in
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
Procedure B provides thermal acceleration. Procedure C in-
C09.61 on Testing for Strength.
volves storage of specimens in insulated curing containers in
Current edition approved Dec. 1, 2003. Published February 2000. Originally
whichtheelevatedcuringtemperatureisobtainedfromheatof
approved in 1971. Last previous edition approved in 1999 as C684–99. DOI:
10.1520/C0684-99R03.
hydration of the cement. The sealed containers also prevent
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
moisture loss. Procedure D involves simultaneous application
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
of elevated temperature and pressure to the concrete using
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. special containers. Sampling and testing procedures are the
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C684 – 99 (2003)
same as for normally cured specimens (see Practice C172 and 7. Apparatus
Test Method C39/C39M, respectively).
7.1 Equipment and small tools for fabricating specimens,
4.2 Important characteristics of these procedures are shown
measuringslump,anddeterminingaircontentshallconformto
in Table 1.
Practice C31/C31M.
7.2 Molds:
5. Significance and Use
7.2.1 Cylinder molds for test specimens used in Procedures
A, B, and C shall conform to Specification C470/C470M.
5.1 The accelerated curing procedures provide, at
...