ASTM C1872-18e1
(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.
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´1
Designation: C1872 − 18
Standard Test Method for
1
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.
1
ε NOTE—Added research report footnote to Section 14 editorially in May 2013.
1. Scope C670 Practice for Preparing Precision and Bias Statements
for Test Methods for Construction Materials
1.1 This test method provides a technique incorporating a
E473 Terminology Relating to Thermal Analysis and Rhe-
thermogravimetric analyzer to determine the mass changes of
ology
hydraulic cement upon heating in an inert gas environment.
E691 Practice for Conducting an Interlaboratory Study to
The data can be used to determine the abundance of some
Determine the Precision of a Test Method
mineralogical components in hydraulic cement powders.
E1131 Test Method for CompositionalAnalysis by Thermo-
1.2 Units—The values stated in SI units are to be regarded
gravimetry
as standard. No other units of measurement are included in this
E1142 Terminology Relating to Thermophysical Properties
standard.
E1582 Test Method for Temperature Calibration of Thermo-
1.3 This test method is applicable to hydraulic cement gravimetric Analyzers
E1868 Test Methods for Loss-On-Drying by Thermogravi-
powders.
metry
1.4 This standard does not purport to address all of the
E2040 Test Method for Mass Scale Calibration of Thermo-
safety concerns, if any, associated with its use. It is the
gravimetric Analyzers
responsibility of the user of this standard to establish appro-
E2402 Test Method for Mass Loss and Residue Measure-
priate safety, health, and environmental practices and deter-
ment Validation of Thermogravimetric Analyzers
mine the applicability of regulatory limitations prior to use.
1.5 Warning—Fresh hydraulic cementitious mixtures are
3. Terminology
caustic and may cause burns to skin and tissue upon prolonged
3.1 Definitions:
exposure. The use of gloves, protective clothing, and eye
3.1.1 Technical terms used in this guide are defined in
protection is recommended. Wash contact area with copious
Terminologies C219, E473, E1142.
amounts of water after contact. Wash eyes for a minimum of
15 min. Avoid exposure of the body to clothing saturated with
4. Summary of Test Method
the liquid phase of the unhardened material. Remove contami-
4.1 Thermogravimetric analysis of cement is performed by
nated clothing immediately after exposure.
continuously monitoring mass changes of a hydraulic cement
1.6 This international standard was developed in accor-
powder specimen, in an environment with a controlled atmo-
dance with internationally recognized principles on standard-
sphere as the test temperature is increased at a constant rate.
ization established in the Decision on Principles for the
Mass loss over specific temperature ranges and in a specific
Development of International Standards, Guides and Recom-
atmosphere can be used to supplement the compositional
mendations issued by the World Trade Organization Technical
analysis of the cement by providing estimates of the mass
Barriers to Trade (TBT) Committee.
fraction of certain mineral constituents.
2. Referenced Documents
5. Significance and Use
2.1 ASTM Standards:
5.1 This test method is intended for use in acquiring,
C114 Test Methods for Chemical Analysis of Hydraulic
analyzing, and reporting thermogravimetric data obtained from
Cement
hydraulic cement powders.
C219 Terminology Relating to Hydraulic Cement
5.2 This test method can be used to determine the calcium
carbonate content of cements with interground limestone if the
1
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/
C1872-18E01. 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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---------------------- Page: 1 ----------------------
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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 Heating rate can influence the temperature at which the
5.5 This test method can be used for qualitative and quan- decomposition of
...
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.
´1
Designation: C1872 − 18 C1872 − 18
Standard Test Method for
1
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.
1
ε NOTE—Added research report footnote to Section 14 editorially in May 2013.
1. 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.
2. Referenced Documents
2.1 ASTM Standards:
C114 Test Methods for Chemical Analysis of Hydraulic Cement
C219 Terminology Relating to Hydraulic Cement
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
E473 Terminology Relating to Thermal Analysis and Rheology
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1131 Test Method for Compositional Analysis by Thermogravimetry
E1142 Terminology Relating to Thermophysical Properties
E1582 Test Method for Temperature Calibration of Thermogravimetric Analyzers
E1868 Test Methods for Loss-On-Drying by Thermogravimetry
E2040 Test Method for Mass Scale Calibration of Thermogravimetric Analyzers
E2402 Test Method for Mass Loss and Residue Measurement Validation of Thermogravimetric Analyzers
3. Terminology
3.1 Definitions:
3.1.1 Technical terms used in this guide are defined in Terminologies C219, E473, E1142.
4. Summary of Test Method
4.1 Thermogravimetric analysis of cement is performed by continuously monitoring mass changes of a hydraulic cement
powder specimen, in an environment with a controlled atmosphere as the test temperature is increased at a constant rate. Mass loss
1
This test method is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.23 on Compositional Analysis.
Current edition approved May 15, 2018. Published June 2018. DOI: 10.1520/C1872-18.10.1520/C1872-18E01.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
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C1872 − 18
over specific temperature ranges and in a specific atmosphere can be used to supplement the compositional analysis of the cement
by providing estimates of the mass fraction of certain mineral constituents.
5. 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 wit
...
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