ASTM C465-23

Standard Specification for Processing Additions for Use in the Manufacture<brk/> of Hydraulic Cements

ABSTRACT
This specification covers the criteria and tests to be used for determining whether a processing addition meets the requirement. When proposed addition is accepted for general use in Portland cement, tests shall be made on cements prepared from at least five different clinkers. These clinkers shall represent two Type I cements, one Type II cement, and two Type III cements. Processing additions shall be evaluated by comparing cements containing the addition to otherwise identical cements from the same source without the addition, or containing a processing addition. The compressive strength and flexural strength of the concrete made with cement containing the addition shall be compared with strengths obtained with the control cement at similar ages. The properties of the materials shall be determined through the following tests in accordance with the following standard: chemical analysis of the cement, compound composition, fineness of cement, normal consistency, time of setting, autoclave expansion, air content of mortar, compressive strength of mortar, and drying shrinkage of mortar.
SCOPE
1.1 This specification pertains to the criteria and tests to be used for determining whether a(n) organic or inorganic processing addition, when used in the recommended amount at the option of the cement producer in the manufacture of hydraulic cements, meets the requirements as prescribed by definition in Specifications C150/C150M, C1157/C1157M, C845/C845M, and C595/C595M. The materials listed in the following former ASTM Specifications shall be considered as meeting the organic processing additions requirements of this specification:    
C150/C150M – 62, for Portland Cement  
C205 – 58 T, for Portland Blast-Furnace Slag Cement  
C340 – 58 T, for Portland Pozzolan Cement  
C358 – 58, for Slag Cement  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 The following safety hazards caveat pertains only to the test methods described in this specification. 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.  
1.4 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-Jul-2023
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.20 - Additions

Relations

• Refers: ASTM C204-24 - Standard Test Methods for Fineness of Hydraulic Cement by Air-Permeability Apparatus
• Effective Date: 01-Jan-2024
• Refers: ASTM E203-24 - Standard Test Method for Water Using Volumetric Karl Fischer Titration
• Effective Date: 01-Jan-2024
• 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 C173/C173M-24 - Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method
• Effective Date: 01-Jan-2024
• Refers: ASTM C109/C109M-23 - Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 50 mm [2 in.] Cube Specimens)
• Effective Date: 15-Dec-2023
• Refers: ASTM C39/C39M-23 - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
• Effective Date: 01-Dec-2023
• Refers: ASTM C596-23 - Standard Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement
• Effective Date: 01-Dec-2023
• Refers: ASTM C114-23 - Standard Test Methods for Chemical Analysis of Hydraulic Cement
• Effective Date: 01-Oct-2023
• Refers: ASTM C617/C617M-23 - Standard Practice for Capping Cylindrical Concrete Specimens
• Effective Date: 01-Oct-2023
• Refers: ASTM C173/C173M-23 - Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method
• Effective Date: 01-Sep-2023
• Refers: ASTM C185-20 - Standard Test Method for Air Content of Hydraulic Cement Mortar
• Effective Date: 01-Apr-2020
• Refers: ASTM C185-19 - Standard Test Method for Air Content of Hydraulic Cement Mortar
• Effective Date: 01-Dec-2019
• Refers: ASTM C150/C150M-19 - Standard Specification for Portland Cement
• Effective Date: 01-Apr-2019
• Refers: ASTM C596-18 - Standard Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement
• Effective Date: 01-Dec-2018
• Refers: ASTM C39/C39M-17b - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
• Effective Date: 01-Aug-2017

Overview

ASTM C465-23, titled Standard Specification for Processing Additions for Use in the Manufacture of Hydraulic Cements, establishes detailed requirements for the acceptance and evaluation of organic and inorganic processing additions in the production of hydraulic cements. This standard defines the test methods and criteria required to determine whether a processing addition is suitable for inclusion in Portland cement, blended cement, expansive hydraulic cement, and other related products.

Processing additions may serve roles such as grinding aids or pack set inhibitors, offering benefits in cement manufacturing and performance. The standard applies to additions used at the discretion of cement producers and specifies that all values and requirements are stated in SI units.

Key Topics

• Scope of Acceptable Additions: Covers organic and inorganic processing additions evaluated for use in Portland cement (ASTM C150/C150M), blended cements (ASTM C595/C595M, C1157/C1157M), and expansive cements (ASTM C845/C845M).
• Test Methods: Outlines the required test methods for properties such as:
  • Chemical analysis of cement (ASTM C114)
  • Compound composition (ASTM C150/C150M)
  • Fineness (ASTM C204)
  • Normal consistency (ASTM C187)
  • Time of setting (ASTM C191)
  • Autoclave expansion (ASTM C151/C151M)
  • Air content of mortar (ASTM C185)
  • Compressive strength of mortar (ASTM C109/C109M)
  • Drying shrinkage of mortar (ASTM C596)
• Evaluation Criteria: Specifies comparative testing for cements with and without the processing addition, ensuring:
  • Minimal impact on water demand and setting time
  • Compliance with limits on autoclave expansion and drying shrinkage
  • Retention of physical performance (compressive strength and air content)
• Reporting and Certification: Sets guidelines for documentation, including details about the addition, test results, and manufacturer’s certification concerning chemical composition or physical properties.

Applications

The ASTM C465-23 standard is crucial for cement manufacturers, additive suppliers, and quality assurance professionals involved in the hydraulic cement supply chain. Its practical applications include:

• Selection and Acceptance of Additives: Ensures that processing additions do not negatively affect the performance or safety characteristics of hydraulic cements.
• Optimization of Cement Properties: Helps manufacturers introduce processing aids that support efficient grinding, improved mill throughput, and predictable cement quality.
• Compliance and Quality Control: Guarantees consistency in manufacturing processes and finished products by providing standardized testing protocols.
• Product Certification: Enables laboratories and certification bodies to evaluate cement products against recognized industry benchmarks, streamlining market access and regulatory compliance.

Related Standards

• ASTM C150/C150M - Specification for Portland Cement
• ASTM C595/C595M - Specification for Blended Hydraulic Cements
• ASTM C1157/C1157M - Performance Specification for Hydraulic Cement
• ASTM C845/C845M - Specification for Expansive Hydraulic Cement
• ASTM C226 - Specification for Air-Entraining Additions for Hydraulic Cement
• ASTM C109/C109M, C191, C204, C185, C596 - Common test methods referenced for property assessment

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Keywords: ASTM C465, processing additions, hydraulic cement, Portland cement, cement additives, cement quality, cement manufacturing standards, inorganic additions, organic additions, cement testing, cement compliance.

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: C465 − 23
Standard Specification for
Processing Additions for Use in the Manufacture
of Hydraulic Cements
This standard is issued under the fixed designation C465; 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* C39/C39M Test Method for Compressive Strength of Cylin-
drical Concrete Specimens
1.1 This specification pertains to the criteria and tests to be
C109/C109M Test Method for Compressive Strength of
used for determining whether a(n) organic or inorganic pro-
Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube
cessing addition, when used in the recommended amount at the
Specimens)
option of the cement producer in the manufacture of hydraulic
C114 Test Methods for Chemical Analysis of Hydraulic
cements, meets the requirements as prescribed by definition in
Cement
Specifications C150/C150M, C1157/C1157M, C845/C845M,
C138/C138M Test Method for Density (Unit Weight), Yield,
and C595/C595M. The materials listed in the following former
and Air Content (Gravimetric) of Concrete
ASTM Specifications shall be considered as meeting the
C143/C143M Test Method for Slump of Hydraulic-Cement
organic processing additions requirements of this specification:
Concrete
C150/C150M – 62, for Portland Cement
C150/C150M Specification for Portland Cement
C205 – 58 T, for Portland Blast-Furnace Slag Cement
C340 – 58 T, for Portland Pozzolan Cement
C173/C173M Test Method for Air Content of Freshly Mixed
C358 – 58, for Slag Cement
Concrete by the Volumetric Method
C185 Test Method for Air Content of Hydraulic Cement
1.2 The values stated in SI units are to be regarded as
Mortar
standard. No other units of measurement are included in this
C187 Test Method for Amount of Water Required for Nor-
standard.
mal Consistency of Hydraulic Cement Paste
1.3 The following safety hazards caveat pertains only to the
C191 Test Methods for Time of Setting of Hydraulic Cement
test methods described in this specification. This standard does
by Vicat Needle
not purport to address all of the safety concerns, if any,
C192/C192M Practice for Making and Curing Concrete Test
associated with its use. It is the responsibility of the user of this
Specimens in the Laboratory
standard to establish appropriate safety, health, and environ-
C204 Test Methods for Fineness of Hydraulic Cement by
mental practices and determine the applicability of regulatory
Air-Permeability Apparatus
limitations prior to use.
C205 Specification for Portland Blast-Furnace Cement; Re-
1.4 This international standard was developed in accor-
placed by C 595 (Withdrawn 1967)
dance with internationally recognized principles on standard-
C226 Specification for Air-Entraining Additions for Use in
ization established in the Decision on Principles for the
the Manufacture of Air-Entraining Hydraulic Cement
Development of International Standards, Guides and Recom-
C231/C231M Test Method for Air Content of Freshly Mixed
mendations issued by the World Trade Organization Technical
Concrete by the Pressure Method
Barriers to Trade (TBT) Committee.
C340 Specification for Portland-Pozzolan Cement (With-
drawn 1967)
2. Referenced Documents
C358 Specification for Slag Cement; Replaced by C 595
2.1 ASTM Standards:
(Withdrawn 1967)
C33/C33M Specification for Concrete Aggregates
C595/C595M Specification for Blended Hydraulic Cements
C596 Test Method for Drying Shrinkage of Mortar Contain-
This specification is under the jurisdiction of ASTM Committee C01 on
ing Hydraulic Cement
Cement and is the direct responsibility of Subcommittee C01.20 on Additions.
C617/C617M Practice for Capping Cylindrical Concrete
Current edition approved July 15, 2023. Published July 2023. Originally
approved in 1961. Last previous edition approved in 2022 as C465 – 22. DOI: Specimens
10.1520/C0465-23.
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 last approved version of this historical standard is referenced on
the ASTM website. 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
C465 − 23
C845/C845M Specification for Expansive Hydraulic Ce- 3.1.6.2 The SO contents of the companion cements shall be
ment reported to the nearest 0.01 % by mass, and shall not differ by
C1157/C1157M Performance Specification for Hydraulic more than 0.3 % by mass.
Cement
3.1.7 The percentage of each of the following shall be
D891 Test Methods for Specific Gravity, Apparent, of Liquid
determined for each lot of cement tested: silicon dioxide
Industrial Chemicals
(SiO ), aluminum oxide (Al O ), ferric oxide (Fe O ), calcium
2 2 3 2 3
E203 Test Method for Water Using Volumetric Karl Fischer
oxide (CaO), magnesium oxide (MgO), sulfur trioxide (SO ),
Titration
ignition loss, insoluble residue, sodium oxide (Na O), and
potassium oxide (K O). There shall also be calculated the
3. Materials
potential percentages of the following compounds: tricalcium
silicate, dicalcium silicate, tricalcium aluminate, and tetracal-
3.1 Cements:
cium aluminoferrite. Determinations for the percentage of the
3.1.1 In cases where it is desired that the proposed organic
addition shall be made, both on the control cements and on
processing addition be accepted for general use in portland
those with which the addition was interground, using the
cement, tests shall be made on cements prepared from at least
method proposed therefore by the sponsor.
five different clinkers. As a minimum, these clinkers shall
represent two Type I cements containing not less than 9.0 %
3.2 Aggregates—The fine and coarse aggregates shall com-
C A, one Type II cement, and two Type III cements, all
ply with Specification C33/C33M; the coarse aggregate shall
conforming to Specification C150/C150M.
comply with the grading requirements for Size No. 57 or Size
3.1.2 In cases where it is also desired that the proposed
No. 67. A sufficient quantity from a single lot of coarse
organic processing addition be used in blended cements, the aggregate and from a single lot of fine aggregate shall be
test and test procedures shall be as specified with a control and
provided to complete all tests. To prevent the segregation of
an addition for cement conforming to the appropriate Specifi- particle sizes in the fine aggregate, a single lot of sand sufficient
cation C595/C595M or C1157/C1157M.
for all tests shall either (1) be separated on the 4.75 mm
3.1.3 Organic processing additions which have been shown (No. 4), 1.18 mm (No. 16), 300 μm (No. 50), and 150 μm
to meet the requirements of this specification may also be used (No. 100) sieves and then be recombined in the required
in cements conforming to Specification C845/C845M. Testing quantity for each batch; or (2) be blended while in a damp
of the addition with these special cements, where desired, shall condition, and maintained in that condition for the duration of
be done using the tests and test procedures as specified with a the tests. Under option (2), lots of appropriate size for single
control cement and a cement containing the addition, both mortar and concrete batches shall be carefully split or quartered
conforming to Specification C845/C845M. from the entire batch.
3.1.4 In cases where it is desired that the proposed organic
processing addition be limited in use to specific types of 4. General Requirements
cement less in number than required in 3.1.1, the tests and test
4.1 Processing additions shall conform to the respective
procedures shall be as specified, and at least two pairs of
requirements in this specification.
cements shall be prepared from two clinkers from different
4.2 The trade name, source, character of the material, and
plants for each type under specific consideration.
means for the quantitative determination of the addition in the
3.1.5 For inorganic processing additions, or in cases where
finished cement shall be furnished by the sponsor,
it is desired that the proposed organic processing addition be
manufacturer, or supplier of the addition, and the information
limited in use to a single plant, the tests and test procedures
shall form a part of the record of tests of the addition. If the
shall be as specified and at least two pairs of cements shall be
processing addition is a liquid, the specific gravity and percent
prepared from clinker representing each type under specific
water content shall also be part of the record. If the processing
consideration.
addition is an inorganic solid, the allowable ranges of chemical
3.1.6 To evaluate comparable samples for the effect of the
analysis of the addition shall also be part of the record.
addition, two companion cements are to be made from any one
clinker. The two companion cements shall be: a) cement that 4.2.1 The specific gravity, run in accordance with 7.1.1 shall
be within 60.05 units of the value reported in 4.2.
does not contain the proposed processing addition (control
cement) and b) cement that does contain the proposed process-
4.2.2 The chemical analysis in 7.2.1 shall be within the
ing addition at the maximum quantity proposed for use (test
ranges given in 4.2.
cement). The control cement shall comply with all require-
4.3 Processing additions shall be evaluated by comparing
ments in the specification applicable to that type of cement.
cements containing the addition to otherwise identical cements
3.1.6.1 When testing organic processing additions, or
from the same source without the addition, or containing a
inorganic processing additions in amounts less than 2 % by
processing addition which has been shown to comply with this
mass, the difference in fineness between the two companion
specification using control cements without any additions,
cements shall not exceed 13 m /kg. When testing inorganic
hereinafter designated the “control” cement.
processing additions in amounts of 2 % or more, the difference
in fineness between the two companion cements shall not 4.4 The amount of the processing addition to be interground
exceed 32 m /kg. Fineness shall be determined in accordance with the cement for evaluation purposes shall be determined by
with Test Methods C204. the sponsor of the addition.
C465 − 23
4.4.1 The amount of the addition in the cement containing obtained with the control cement. The air-entraining addition
the addition and showing compliance with the requirements of used shall meet the requirements of Specification C226.
this specification shall be determined quantitatively by means
4.6 Processing additions which provide maximum effects as
of the quantitative determination required by 4.2.
grinding aids or pack set inhibitors may increase cement
4.4.2 The amount of addition, so determined, shall be used
flowability to a point where mill retention time is reduced
to state the amount of addition that shows compliance with this
sufficiently to affect significantly the particle size distribution
specification.
of the resulting cement and its physical-chemical properties.
4.4.3 When tests on cements containing the addition show
Mill retention times are controllable by mechanical means in
compliance with the requirements of this specification, the
full-scale grinding mills. Hence, the true physical-chemical
addition in cement may be used in any amount up to the
effects of the test additive may be determined for acceptance
maximum amount showing compliance.
purposes by making supplementary laboratory or pilot-mill
4.5 The cement produced for evaluation purposes with the grinds, in instances where full-scale tests hav
...

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: C465 − 22 C465 − 23
Standard Specification for
Processing Additions for Use in the Manufacture
of Hydraulic Cements
This standard is issued under the fixed designation C465; 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 specification pertains to the criteria and tests to be used for determining whether a(n) organic or inorganic processing
addition, when used in the recommended amount at the option of the cement producer in the manufacture of hydraulic cements,
meets the requirements as prescribed by definition in Specifications C150/C150M, C1157/C1157M, C845/C845M, and
C595/C595M. The materials listed in the following former ASTM Specifications shall be considered as meeting the organic
processing additions requirements of this specification:
C150/C150M – 62, for Portland Cement
C205 – 58 T, for Portland Blast-Furnace Slag Cement
C340 – 58 T, for Portland Pozzolan Cement
C358 – 58, for Slag Cement
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 The following safety hazards caveat pertains only to the test methods described in this specification. 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.
1.4 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
2.1 ASTM Standards:
C33/C33M Specification for Concrete Aggregates
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
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
C138/C138M Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete
C143/C143M Test Method for Slump of Hydraulic-Cement Concrete
C150/C150M Specification for Portland Cement
This specification is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.20 on Additions.
Current edition approved July 1, 2022July 15, 2023. Published July 2022July 2023. Originally approved in 1961. Last previous edition approved in 20192022 as
C465 – 19.C465 – 22. DOI: 10.1520/C0465-22.10.1520/C0465-23.
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
C465 − 23
C151/C151M Test Method for Autoclave Expansion of Hydraulic Cement
C173/C173M Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method
C185 Test Method for Air Content of Hydraulic Cement Mortar
C187 Test Method for Amount of Water Required for Normal Consistency of Hydraulic Cement Paste
C191 Test Methods for Time of Setting of Hydraulic Cement by Vicat Needle
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
C205 Specification for Portland Blast-Furnace Cement; Replaced by C 595 (Withdrawn 1967)
C226 Specification for Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic Cement
C231/C231M Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
C340 Specification for Portland-Pozzolan Cement (Withdrawn 1967)
C358 Specification for Slag Cement; Replaced by C 595 (Withdrawn 1967)
C595/C595M Specification for Blended Hydraulic Cements
C596 Test Method for Drying Shrinkage of Mortar Containing Hydraulic Cement
C617/C617M Practice for Capping Cylindrical Concrete Specimens
C845/C845M Specification for Expansive Hydraulic Cement
C1157/C1157M Performance Specification for Hydraulic Cement
D891 Test Methods for Specific Gravity, Apparent, of Liquid Industrial Chemicals
E203 Test Method for Water Using Volumetric Karl Fischer Titration
3. Materials
3.1 Cements:
3.1.1 In cases where it is desired that the proposed organic processing addition be accepted for general use in portland cement,
tests shall be made on cements prepared from at least five different clinkers. As a minimum, these clinkers shall represent two Type
I cements containing not less than 9.0 % C A, one Type II cement, and two Type III cements, all conforming to Specification
C150/C150M.
3.1.2 In cases where it is also desired that the proposed organic processing addition be used in blended cements, the test and test
procedures shall be as specified with a control and an addition for cement conforming to the appropriate Specification
C595/C595M or C1157/C1157M.
3.1.3 Organic processing additions which have been shown to meet the requirements of this specification may also be used in
cements conforming to Specification C845/C845M. Testing of the addition with these special cements, where desired, shall be done
using the tests and test procedures as specified with a control cement and a cement containing the addition, both conforming to
Specification C845/C845M.
3.1.4 In cases where it is desired that the proposed organic processing addition be limited in use to specific types of cement less
in number than required in 3.1.1, the tests and test procedures shall be as specified, and at least two pairs of cements shall be
prepared from two clinkers from different plants for each type under specific consideration.
3.1.5 For inorganic processing additions, or in cases where it is desired that the proposed organic processing addition be limited
in use to a single plant, the tests and test procedures shall be as specified and at least two pairs of cements shall be prepared from
clinker representing each type under specific consideration.
3.1.6 To evaluate comparable samples for the effect of the addition, two companion cements are to be made from any one clinker.
The two companion cements shall be: a) cement that does not contain the proposed processing addition (control cement) and b)
cement that does contain the proposed processing addition at the maximum quantity proposed for use (test cement). The control
cement shall comply with all requirements in the specification applicable to that type of cement.
3.1.6.1 When testing organic processing additions, or inorganic processing additions in amounts less than 2 % by mass, the
difference in fineness between the two companion cements shall not exceed 13 m /kg. When testing inorganic processing additions
in amounts of 2 % or more, the difference in fineness between the two companion cements shall not exceed 32 m /kg. Fineness
shall be determined in accordance with Test MethodMethods C204C204.
The last approved version of this historical standard is referenced on www.astm.org.
C465 − 23
3.1.6.2 The SO contents of the companion cements shall be reported to the nearest 0.01 % by mass, and shall not differ by more
than 0.3 % by mass.
3.1.7 The percentage of each of the following shall be determined for each lot of cement tested: silicon dioxide (SiO ), aluminum
oxide (Al O ), ferric oxide (Fe O ), calcium oxide (CaO), magnesium oxide (MgO), sulfur trioxide (SO ), ignition loss, insoluble
2 3 2 3 3
residue, sodium oxide (Na O), and potassium oxide (K O). There shall also be calculated the potential percentages of the following
2 2
compounds: tricalcium silicate, dicalcium silicate, tricalcium aluminate, and tetracalcium aluminoferrite. Determinations for the
percentage of the addition shall be made, both on the control cements and on those with which the addition was interground, using
the method proposed therefore by the sponsor.
3.2 Aggregates—The fine and coarse aggregates shall comply with Specification C33/C33M; the coarse aggregate shall comply
with the grading requirements for Size No. 57 or Size No. 67. A sufficient quantity from a single lot of coarse aggregate and from
a single lot of fine aggregate shall be provided to complete all tests. To prevent the segregation of particle sizes in the fine
aggregate, a single lot of sand sufficient for all tests shall either (1) be separated on the 4.75-mm (No. 4), 1.18-mm (No. 16), 300
μm 4.75 mm (No. 4), 1.18 mm (No. 16), 300 μm (No. 50), and 150 μm 150 μm (No. 100) sieves and then be recombined in the
required quantity for each batch; or (2) be blended while in a damp condition, and maintained in that condition for the duration
of the tests. Under option (2), lots of appropriate size for single mortar and concrete batches shall be carefully split or quartered
from the entire batch.
4. General Requirements
4.1 Processing additions shall conform to the respective requirements in this specification.
4.2 The trade name, source, character of the material, and means for the quantitative determination of the addition in the finished
cement shall be furnished by the sponsor, manufacturer, or supplier of the addition, and the information shall form a part of the
record of tests of the addition. If the processing addition is a liquid, the specific gravity and percent water content shall also be
part of the record. If the processing addition is an inorganic solid, the allowable ranges of chemical analysis of the addition shall
also be part of the record.
4.2.1 The specific gravity, run in accordance with 7.1.1 shall be within 60.05 units of the value reported in 4.2.
4.2.2 The chemical analysis in 7.2.1 shall be within the ranges given in 4.2.
4.3 Processing additions shall be evaluated by comparing cements containing the addition to otherwise identical cements from the
same source without the addition, or containing a processing addition which has been shown to comply with this specification using
control cements without any additions, hereinafter designated the “control” cement.
4.4 The amount of the processing addition to be interground with the cement for evaluation purposes shall be determined by the
sponsor of the addition.
4.4.1 The amount of the addition in the cement containing the addition and showing compliance with the requirements of this
specification shall be determined quantitatively by means of the quantitative determination required by 4.2.
4.4.2 The amount of addition, so determined, shall be used to state the amount of addition that shows compliance with this
specification.
4.4.3 When tests on cements containing the addition show compliance with the requirements of this specification, the addition in
cement may be used in any amount up to the maximum amount showing compliance.
4.5 The cement produced for evaluation purposes with the processing addition shall comply with the appropriate Specifications
C150/C150M, C845/C845M, C1157/C1157M, or C595/C595M, except that it contains the addition under test. The effect of the
addition on the properties of the cement shall also be within the following limits:
4.5.1 The percentage of water by mass of cement required for normal consistency of cement containing the addition shall not
exceed that required by the corresponding control cement by more than 1.0. For those cements not limited to a fixed water
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requirement, the percentage of water by mass of cement required for standard consistency of the mortar used for strength
determinations as described in 4.5.44.5.3 shall not be increased by mor
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