ASTM C1872-18e2
(Test Method)Standard Test Method for Thermogravimetric Analysis of Hydraulic Cement
Standard Test Method for Thermogravimetric Analysis of Hydraulic Cement
SIGNIFICANCE AND USE
5.1 This test method is intended for use in acquiring, analyzing, and reporting thermogravimetric data obtained from hydraulic cement powders.
5.2 This test method can be used to determine the calcium carbonate content of cements with interground limestone if the calcium carbonate content of the limestone is known.
5.3 This test method can be used to determine the calcium hydroxide content of hydraulic cement powder.
5.4 This test method can be used to determine the mass loss upon heating hydraulic cement powders within a specific temperature range.
5.5 This test method can be used for qualitative and quantitative characterization, under certain conditions, of various sulfate mineral components including calcium sulfate dihydrate, calcium sulfate hemihydrate, and syngenite.
5.6 Different kinds of thermogravimetric analyzers are available with different configurations and controllers. Therefore, the parameters described should be considered as guidelines. They may be altered to conform to the instrument manufacturer’s instructions, provided the changes are noted in the report.
SCOPE
1.1 This test method provides a technique incorporating a thermogravimetric analyzer to determine the mass changes of hydraulic cement upon heating in an inert gas environment. The data can be used to determine the abundance of some mineralogical components in hydraulic cement powders.
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 This test method is applicable to hydraulic cement powders.
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 Warning—Fresh hydraulic cementitious mixtures are caustic and may cause burns to skin and tissue upon prolonged exposure. The use of gloves, protective clothing, and eye protection is recommended. Wash contact area with copious amounts of water after contact. Wash eyes for a minimum of 15 min. Avoid exposure of the body to clothing saturated with the liquid phase of the unhardened material. Remove contaminated clothing immediately after exposure.
1.6 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
Relations
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.
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Designation: C1872 − 18
Standard Test Method for
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Thermogravimetric Analysis of Hydraulic Cement
This standard is issued under the fixed designation C1872; 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.
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ε NOTE—Research report footnote was added to Section 14 editorially in July 2018.
2
ε NOTE—Headnote information was corrected and unreferenced documents were removed from Section 2 editorially in
July 2018.
1. Scope C219 Terminology Relating to Hydraulic Cement
C670 Practice for Preparing Precision and Bias Statements
1.1 This test method provides a technique incorporating a
for Test Methods for Construction Materials
thermogravimetric analyzer to determine the mass changes of
E473 Terminology Relating to Thermal Analysis and Rhe-
hydraulic cement upon heating in an inert gas environment.
ology
The data can be used to determine the abundance of some
E691 Practice for Conducting an Interlaboratory Study to
mineralogical components in hydraulic cement powders.
Determine the Precision of a Test Method
1.2 Units—The values stated in SI units are to be regarded
E1131 Test Method for CompositionalAnalysis by Thermo-
as standard. No other units of measurement are included in this
gravimetry
standard.
E1142 Terminology Relating to Thermophysical Properties
1.3 This test method is applicable to hydraulic cement E1582 Test Method for Temperature Calibration of Thermo-
gravimetric Analyzers
powders.
E2040 Test Method for Mass Scale Calibration of Thermo-
1.4 This standard does not purport to address all of the
gravimetric Analyzers
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
3.1 Definitions:
1.5 Warning—Fresh hydraulic cementitious mixtures are
3.1.1 Technical terms used in this guide are defined in
caustic and may cause burns to skin and tissue upon prolonged
Terminologies C219, E473, E1142.
exposure. The use of gloves, protective clothing, and eye
protection is recommended. Wash contact area with copious
4. Summary of Test Method
amounts of water after contact. Wash eyes for a minimum of
4.1 Thermogravimetric analysis of cement is performed by
15 min. Avoid exposure of the body to clothing saturated with
continuously monitoring mass changes of a hydraulic cement
the liquid phase of the unhardened material. Remove contami-
powder specimen, in an environment with a controlled atmo-
nated clothing immediately after exposure.
sphere as the test temperature is increased at a constant rate.
1.6 This international standard was developed in accor-
Mass loss over specific temperature ranges and in a specific
dance with internationally recognized principles on standard-
atmosphere can be used to supplement the compositional
ization established in the Decision on Principles for the
analysis of the cement by providing estimates of the mass
Development of International Standards, Guides and Recom-
fraction of certain mineral constituents.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5. Significance and Use
2. Referenced Documents
5.1 This test method is intended for use in acquiring,
analyzing, and reporting thermogravimetric data obtained from
2.1 ASTM Standards:
hydraulic cement powders.
C114 Test Methods for Chemical Analysis of Hydraulic
Cement
5.2 This test method can be used to determine the calcium
carbonate content of cements with interground limestone if the
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This test method is under the jurisdiction ofASTM Committee C01 on Cement calcium carbonate content of the limestone is known.
and is the direct responsibility of Subcommittee C01.23 on CompositionalAnalysis.
5.3 This test method can be used to determine the calcium
Current edition approved May 15, 2018. Published June 2018. DOI: 10.1520/
C1872-18E02. hydroxide content of hydraulic cement powder.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C1872 − 18
5.4 This test method can be used to determine the mass loss but can be separated better by covering the container with a lid
upon heating hydraulic cement powders within a specific having a narrow slit or hole for escape of vapors.
temperature range.
6.2 Hea
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