Standard Guide for Approximation of Optimum SO<inf>3</inf> in Hydraulic Cement

SIGNIFICANCE AND USE
3.1 The purpose of this guide is to estimate the SO3 content for a hydraulic cement that gives maximum performance. The value obtained is one way to establish an appropriate level of sulfate in the manufacture of cements specified in Specifications C150, C595, and C1157.  
3.2 The SO3 content of a cement giving maximum performance is different at different ages, with different performance criteria and with different materials such supplementary cementitious materials and chemical admixtures. A manufacturer can choose the performance criteriato determine optimum SO3 content. This optimum SO3 content may be a compromise between different ages and different performance criteria.
Note 1: Typically, the optimum SO3 content is higher the later the age.  
3.3 This guide indicates optimum SO3 content for cement in mortar made and cured at a standard temperature of 23.0 ± 2.0°C (73.5 ± 3.5°F). The optimum SO3 increases with increasing temperature and may increase when water-reducing admixtures are used.  
3.4 It should not be assumed that the optimum SO3 estimated in this guide is the same SO3 content for optimum performance of a concrete prepared from the cement.  
3.5 The guide is applicable to cements specified in Specifications C150, C595, and C1157.
SCOPE
1.1 This guide describes the determination of approximate optimum SO3 for maximum performance as a result of substituting calcium sulfate for a portion of the cement.  
1.2 This guide 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 C114 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.

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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 − 17
Standard Guide for
1
Approximation of Optimum SO in Hydraulic Cement
3
This standard is issued under the fixed designation C563; 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* C204Test Methods for Fineness of Hydraulic Cement by
Air-Permeability Apparatus
1.1 This guide describes the determination of approximate
C305Practice for Mechanical Mixing of Hydraulic Cement
optimum SO for maximum performance as a result of substi-
3
Pastes and Mortars of Plastic Consistency
tuting calcium sulfate for a portion of the cement.
C430Test Method for Fineness of Hydraulic Cement by the
1.2 This guide refers to the sulfur trioxide (SO ) content of
3
45-µm (No. 325) Sieve
thecementonly.Slagcementsandoccasionallyotherhydraulic
C465Specification for Processing Additions for Use in the
cements can contain sulfide or other forms of sulfur. The
Manufacture of Hydraulic Cements
determination of SO content by rapid methods may include
3
C471MTestMethodsforChemicalAnalysisofGypsumand
these other forms, and may therefore produce a significant
Gypsum Products (Metric)
error. If a significant error occurs, analyze the cement for SO
3
C595Specification for Blended Hydraulic Cements
content using the reference test method of Test Methods C114
C596Test Method for Drying Shrinkage of Mortar Contain-
for sulfur trioxide.
ing Hydraulic Cement
C1157Performance Specification for Hydraulic Cement
1.3 Values stated as SI units are to be regarded as standard.
C1437Test Method for Flow of Hydraulic Cement Mortar
1.4 This standard does not purport to address all of the
C1702Test Method for Measurement of Heat of Hydration
safety concerns, if any, associated with its use. It is the
of Hydraulic Cementitious Materials Using Isothermal
responsibility of the user of this standard to establish appro-
Conduction Calorimetry
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3. Significance and Use
3.1 The purpose of this guide is to estimate the SO content
3
2. Referenced Documents
for a hydraulic cement that gives maximum performance. The
2
2.1 ASTM Standards:
value obtained is one way to establish an appropriate level of
C39/C39MTest Method for Compressive Strength of Cylin-
sulfate in the manufacture of cements specified in Specifica-
drical Concrete Specimens
tions C150, C595, and C1157.
C78Test Method for Flexural Strength of Concrete (Using
3.2 The SO content of a cement giving maximum perfor-
3
Simple Beam with Third-Point Loading)
mance is different at different ages, with different performance
C109/C109MTest Method for Compressive Strength of
criteria and with different materials such supplementary ce-
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
mentitious materials and chemical admixtures.Amanufacturer
Specimens)
can choose the performance criteriato determine optimum SO
3
C114Test Methods for Chemical Analysis of Hydraulic
content. This optimum SO content may be a compromise
3
Cement
between different ages and different performance criteria.
C150Specification for Portland Cement
NOTE1—Typically,theoptimumSO contentishigherthelatertheage.
C192Practice for Making and Curing Concrete Test Speci- 3
mens in the Laboratory 3.3 ThisguideindicatesoptimumSO contentforcementin
3
mortar made and cured at a standard temperature of 23.0 6
2.0°C (73.5 6 3.5°F). The optimum SO increases with
3
increasing temperature and may increase when water-reducing
1
This guide is under the jurisdiction of ASTM Committee C01 on Cement and
admixtures are used.
is the direct responsibility of Subcommittee C01.28 on Sulfate Content
Current edition approved Feb. 1, 2017. Published March 2017. Originally
3.4 It should not be assumed that the optimum SO esti-
3
approved in 1965. Last previous edition approved in 2016 as C563–16. DOI:
mated in this guide is the same SO content for optimum
10.1520/C0563-17.
3
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
performance of a concrete prepared from the cement.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.5 The guide is applicable to cements specified in Specifi-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. cations C150, C595, and C1157.
*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

---------------------- Page: 1 ----------------------
C563 − 17
4. Apparatus (SiO ),aluminumoxide(Al O ),fer
...

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: C563 − 16 C563 − 17
Standard Guide for
Approximation of Optimum SO in Hydraulic Cement Using
3
1
Compressive Strength
This standard is issued under the fixed designation C563; 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 Scope*
1.1 This guide describes the determination of approximate optimum SO for maximum compressive strength at 24 h, 3 days,
3
or 7 days by measuring the change in strength produced in hydraulic cement mortar performance as a result of substituting calcium
sulfate for a portion of the cement.
1.2 This guide refers to the sulfur trioxide (SO ) content of the cement only. Slag cements and occasionally other hydraulic
3
cements can contain sulfide or other forms of sulfur. The determination of SO content by rapid methods may include these other
3
forms, and may therefore produce a significant error. If a significant error occurs, analyze the cement for SO content using the
3
reference test method of Test Methods C114 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
C78 Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C114 Test Methods for Chemical Analysis of Hydraulic Cement
C150 Specification for Portland Cement
C192 Practice for Making and Curing Concrete Test Specimens in the Laboratory
C204 Test Methods for Fineness of Hydraulic Cement by Air-Permeability Apparatus
C305 Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
C430 Test Method for Fineness of Hydraulic Cement by the 45-μm (No. 325) Sieve
C465 Specification for Processing Additions for Use in the Manufacture of Hydraulic Cements
C471M Test Methods for Chemical Analysis of Gypsum and Gypsum Products (Metric)
C511C595 Specification for Mixing Rooms, Moist Cabinets, Moist Rooms, and Water Storage Tanks Used in the Testing of
Hydraulic Cements and ConcretesBlended Hydraulic Cements
C595C596 Specification for Blended Hydraulic CementsTest Method for Drying Shrinkage of Mortar Containing Hydraulic
Cement
C1157 Performance Specification for Hydraulic Cement
C1437 Test Method for Flow of Hydraulic Cement Mortar
C1702 Test Method for Measurement of Heat of Hydration of Hydraulic Cementitious Materials Using Isothermal Conduction
Calorimetry
1
This guide is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.28 on Sulfate Content
Current edition approved July 1, 2016Feb. 1, 2017. Published July 2016March 2017. Originally approved in 1965. Last previous edition approved in 20152016 as
C563 – 15.C563 – 16. DOI: 10.1520/C0563-16.10.1520/C0563-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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.
*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

---------------------- Page: 1 ----------------------
C563 − 17
3. Significance and Use
3.1 The purpose of this guide is to estimate the SO content for a hydraulic cement that gives maximum compressive strength
3
in mortar made and cured at 23°C. performance. The value obtained is one way to establish an appropriate level of sulfate in the
manufacture of cements specified in Specifications C150, C595, and C1157.
3.2 The SO content of a cement giving maximum compressive strength performance is different at different ages of mortar;
3
typically this SOages, with different performance criteria content is higher at 3 days than the 24-h, and often higher for 7 days
3
than that for 3 days.and wi
...

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