ASTM C563-20

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/C150M, C595/C595M, and C1157/C1157M.  
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, optionally in presence of supplementary cementitious materials and admixtures. Several alternate methods are allowed: compressive strength of concrete or mortar, heat of hydration of paste or mortar, and drying shrinkage of mortar.  
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 in the field using the same materials. The optimum SO3 is influenced by parameters such as ambient and fresh concrete temperature, admixtures, and supplementary cementitious materials.  
3.5 The guide is applicable to cements specified in Specifications C150/C150M, C595/C595M, and C1157/C1157M.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
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: 31-May-2020
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.28 - Sulfate Content

Relations

• Refers: ASTM C305-20 - Standard Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
• Effective Date: 15-Jul-2020

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.
Designation: C563 − 20
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* C114Test Methods for Chemical Analysis of Hydraulic
Cement
1.1 This guide describes the determination of approximate
C150/C150MSpecification for Portland Cement
optimum SO for maximum performance as a result of substi-
3
C192/C192MPractice for Making and Curing ConcreteTest
tuting calcium sulfate for a portion of the cement.
Specimens in the Laboratory
1.2 This guide refers to the sulfur trioxide (SO ) content of
3
C204Test Methods for Fineness of Hydraulic Cement by
thecementonly.Slagcementsandoccasionallyotherhydraulic
Air-Permeability Apparatus
cements can contain sulfide or other forms of sulfur. The
C305Practice for Mechanical Mixing of Hydraulic Cement
determination of SO content by rapid methods may include
3
Pastes and Mortars of Plastic Consistency
these other forms, and may therefore produce a significant
C430Test Method for Fineness of Hydraulic Cement by the
error. If a significant error occurs, analyze the cement for SO
3
45-µm (No. 325) Sieve
content using the reference test method of Test Methods C114
C465Specification for Processing Additions for Use in the
for sulfur trioxide.
Manufacture of Hydraulic Cements
1.3 Values stated as SI units are to be regarded as standard.
C471MTestMethodsforChemicalAnalysisofGypsumand
Gypsum Products (Metric)
1.4 This standard does not purport to address all of the
C595/C595MSpecification for Blended Hydraulic Cements
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- C596Test Method for Drying Shrinkage of Mortar Contain-
ing Hydraulic Cement
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. C1157/C1157MPerformance Specification for Hydraulic
1.5 This international standard was developed in accor- Cement
dance with internationally recognized principles on standard-
C1437Test Method for Flow of Hydraulic Cement Mortar
ization established in the Decision on Principles for the C1679Practice for Measuring Hydration Kinetics of Hy-
Development of International Standards, Guides and Recom-
draulic Cementitious Mixtures Using Isothermal Calorim-
mendations issued by the World Trade Organization Technical
etry
Barriers to Trade (TBT) Committee.
C1702Test Method for Measurement of Heat of Hydration
of Hydraulic Cementitious Materials Using Isothermal
2. Referenced Documents
Conduction Calorimetry
2
2.1 ASTM Standards:
C39/C39MTest Method for Compressive Strength of Cylin-
3. Significance and Use
drical Concrete Specimens
3.1 The purpose of this guide is to estimate the SO content
3
C78/C78MTest Method for Flexural Strength of Concrete
for a hydraulic cement that gives maximum performance. The
(Using Simple Beam with Third-Point Loading)
value obtained is one way to establish an appropriate level of
C109/C109MTest Method for Compressive Strength of
sulfate in the manufacture of cements specified in Specifica-
Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube
tions C150/C150M, C595/C595M, and C1157/C1157M.
Specimens)
3.2 The SO content of a cement giving maximum perfor-
3
mance is different at different ages, with different performance
1
This guide is under the jurisdiction of ASTM Committee C01 on Cement and
criteria and with different materials such supplementary ce-
is the direct responsibility of Subcommittee C01.28 on Sulfate Content
CurrenteditionapprovedJune1,2020.PublishedJuly2020.Originallyapproved
mentitious materials and chemical admixtures.Amanufacturer
in 1965. Last previous edition approved in 2019 as C563–19. DOI: 10.1520/
can choose the performance criteriato determine optimum SO
3
C0563-20.
content. This optimum SO content may be a compromise
2
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 between different ages and different performance criteria.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. NOTE1—Typically,theoptimumSO contentishigherthelatertheage.
3
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Consho
...

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 − 19 C563 − 20
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. 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*
1.1 This guide describes the determination of approximate optimum SO for maximum performance as a result of substituting
3
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
C78/C78M 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/C150M Specification for Portland Cement
C192/C192M 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)
C595/C595M Specification for Blended Hydraulic Cements
C596 Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement
C1157/C1157M Performance Specification for Hydraulic Cement
C1437 Test Method for Flow of Hydraulic Cement Mortar
C1679 Practice for Measuring Hydration Kinetics of Hydraulic Cementitious Mixtures Using Isothermal Calorimetry
C1702 Test Method for Measurement of Heat of Hydration of Hydraulic Cementitious Materials Using Isothermal Conduction
Calorimetry
3. Significance and Use
3.1 The purpose of this guide is to estimate the SO content for a hydraulic cement that gives maximum performance. The value
3
obtained is one way to establish an appropriate level of sulfate in the manufacture of cements specified in Specifications
C150/C150M, C595/C595M, and C1157/C1157M.
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 Oct. 1, 2019June 1, 2020. Published November 2019July 2020. Originally approved in 1965. Last previous edition approved in 20182019 as
C563 – 18a.C563 – 19. DOI: 10.1520/C0563-19.10.1520/C0563-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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

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C563 − 20
3.2 The SO content of a cement giving maximum performance is different at different ages, with different performance criteria
3
and with different materials
...