ASTM C563-04

Standard Test Method for Optimum SO₃ in Hydraulic Cement Using 24-h Compressive Strength

SCOPE
1.1 This test method describes the determination of optimum SO3 for maximum 24-h compressive strength by measuring the change in strength produced in hydraulic cement mortar as a result of substituting calcium sulfate for a portion of the cement. Usually, but not always, the SO3 content that produces the highest 24-h strength at 23°C also produces approximately the lowest expansion in water and the lowest contraction in air at that temperature.
1.2 This test method refers to the sulfur trioxide (SO3) content of the cement only. Slag cements and occasionally other hydraulic cements can contain sulfide or other forms of sulfur. The determination of SO3 content by rapid methods may include these other forms, and may therefore produce a significant error. If a significant error occurs, analyze the cement for SO3 content using the reference test method of Test Methods C 114 for sulfur trioxide.
1.3 Values stated as SI units are to be regarded as 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 limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-May-2004
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.28 - Sulfate Content

Relations

• Replaces: ASTM C563-03 - Standard Test Method for Optimum SO₃ in Hydraulic Cement Using 24-h Compressive Strength
• Effective Date: 01-Jun-2004
• Replaced By: ASTM C563-07 - Standard Test Method for Approximation of Optimum SO₃ in Hydraulic Cement Using Compressive Strength
• Effective Date: 01-Apr-2007
• Referred By: ASTM C150/C150M-22 - Standard Specification for Portland Cement
• Effective Date: 01-Jun-2004
• Referred By: ASTM C595/C595M-23 - Standard Specification for Blended Hydraulic Cements
• Effective Date: 01-Jun-2004

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C563–04
Standard Test Method for
Optimum SO in Hydraulic Cement Using 24-h Compressive
3
1
Strength
This standard is issued under the fixed designation C 563; 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 C 150 Specification for Portland Cement
C 204 Test Method for Fineness of Hydraulic Cement by
1.1 This test method describes the determination of opti-
Air Permeability Apparatus
mum SO for maximum 24-h compressive strength by mea-
3
C 305 PracticeforMechanicalMixingofHydraulicCement
suring the change in strength produced in hydraulic cement
Pastes and Mortars of Plastic Consistency
mortar as a result of substituting calcium sulfate for a portion
C 471M Test Methods for Chemical Analysis of Gypsum
of the cement. Usually, but not always, the SO content that
3
and Gypsum Products [Metric]
produces the highest 24-h strength at 23 °C also produces
C 511 Specification for Mixing Rooms, Moist Cabinets,
approximately the lowest expansion in water and the lowest
Moist Rooms, and Water Storage Tanks Used in the
contraction in air at that temperature.
Testing of Hydraulic Cements and Concretes
1.2 This test method refers to the sulfur trioxide (SO )
3
C 595 Specification for Blended Hydraulic Cements
content of the cement only. Slag cements and occasionally
C 778 Specification for Standard Sand
other hydraulic cements can contain sulfide or other forms of
C 1157 Performance Specification for Hydraulic Cement
sulfur.ThedeterminationofSO contentbyrapidmethodsmay
3
C 1437 Test Method for Flow of Hydraulic-Cement Mortar
include these other forms, and may therefore produce a
significant error. If a significant error occurs, analyze the
3. Significance and Use
cement for SO content using the reference test method of Test
3
3.1 The purpose of this test method is to estimate the SO
3
Methods C 114 for sulfur trioxide.
content for a hydraulic cement that gives maximum 24-h
1.3 Values stated as SI units are to be regarded as standard.
compressive strength in mortar made and cured at 23 °C. The
1.4 This standard does not purport to address all of the
value obtained is used to establish an appropriate level of
safety concerns, if any, associated with its use. It is the
sulfate in the manufacture of cements specified in Specifica-
responsibility of the user of this standard to establish appro-
tions C 150, C 595 and C 1157. In Specifications C 150 and
priate safety and health practices and determine the applica-
C 595 it is used to justify exceeding the prescriptive limits for
bility of regulatory limitations prior to use.
SO .
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2. Referenced Documents 3.2 The optimum SO content for 24-h compressive
3
2 strength is not necessarily the optimum SO content for later
2.1 ASTM Standards: 3
ages or for volume change. Confirming tests can be made if the
C 109/C 109M Test Method for Compressive Strength of
relationships between SO and these properties are not known
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube 3
for the cement being tested.
Specimens)
3.3 This test method indicates optimum SO content for
3
C 114 Test Methods for Chemical Analysis of Hydraulic
cement in mortar made and cured at a standard temperature of
Cement
23.0 6 2.0 °C (73.5 6 3.5 °F). The optimum SO increases
3
with increasing temperature and may increase when water-
1
This test method is under the jurisdiction ofASTM Committee C01 on Cement
reducing admixtures are used.
and is the direct responsibility of Subcommittee C01.28 on Sulfate Content.
3.4 It should not be assumed that the optimum SO
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CurrenteditionapprovedJune1,2004.PublishedJuly2004.Originallyapproved
estimated in this test method is the same SO content for
in 1965. Last previous edition approved in 2003 as C 563-03.
3
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
optimum performance of a concrete prepared from the cement.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
3.5 The test method is applicable to cements specified in
Standards volume information, refer to the standard’s Document Summary page on
Specifications C 150, C 595, and C 1157.
the ASTM website.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
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C563–04
4. Apparatus are removed from the molds before 24 h, keep them on the
shelves of the moist closet or moist room until they are 24-h
4.1 Use the apparatus as specified in Test Method C 109/
old.
C 109M.
7. Temperature and Humidity
5. Materials
7.1 The temperature and humidity of the mois
...