ASTM C186-15a
(Test Method)Standard Test Method for Heat of Hydration of Hydraulic Cement
Standard Test Method for Heat of Hydration of Hydraulic Cement
SIGNIFICANCE AND USE
3.1 The purpose of this test is to determine if the hydraulic cement under test meets the heat of hydration requirement of the applicable hydraulic cement specification.
3.2 This test may also be used for research purposes when it is desired to determine the heat of hydration of hydraulic cement at any age.
Note 1: When tests are performed for research purposes, useful additional information can be obtained by determining fineness, chemical and compound compositions.
3.3 Determination of the heat of hydration of hydraulic cements provides information that is helpful for calculating temperature rise in mass concrete.
SCOPE
1.1 This test method covers the determination of the heat of hydration of a hydraulic cement by measuring the heat of solution of the dry cement and the heat of solution of a separate portion of the cement that has been partially hydrated for 7 and for 28 days, the difference between these values being the heat of hydration for the respective hydrating period.
1.2 The results of this test method may be inaccurate if some of the components of the hydraulic cement are insoluble in the nitric acid/hydrofluoric acid solution.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 Values in SI units shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversion and Rounding given in Standard IEEE/ASTM SI 10, or measurements made in other units.
1.5 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 or regulatory limitations prior to use. Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2
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Designation: C186 − 15a
Standard Test Method for
1
Heat of Hydration of Hydraulic Cement
This standard is issued under the fixed designation C186; 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 C670 Practice for Preparing Precision and Bias Statements
for Test Methods for Construction Materials
1.1 This test method covers the determination of the heat of
C1005 Specification for Reference Masses and Devices for
hydration of a hydraulic cement by measuring the heat of
Determining Mass and Volume for Use in the Physical
solutionofthedrycementandtheheatofsolutionofaseparate
Testing of Hydraulic Cements
portion of the cement that has been partially hydrated for 7 and
E11 Specification for Woven Wire Test Sieve Cloth and Test
for 28 days, the difference between these values being the heat
Sieves
of hydration for the respective hydrating period.
IEEE/ASTM SI 10 Standard for Use of the International
1.2 The results of this test method may be inaccurate if
System of Units (SI): The Modern Metric System
some of the components of the hydraulic cement are insoluble
in the nitric acid/hydrofluoric acid solution.
3. Significance and Use
1.3 The values stated in SI units are to be regarded as
3.1 The purpose of this test is to determine if the hydraulic
standard. No other units of measurement are included in this
cement under test meets the heat of hydration requirement of
standard.
the applicable hydraulic cement specification.
1.4 Values in SI units shall be obtained by measurement in
3.2 This test may also be used for research purposes when it
SI units or by appropriate conversion, using the Rules for
is desired to determine the heat of hydration of hydraulic
Conversion and Rounding given in Standard IEEE/ASTM SI
cement at any age.
10, or measurements made in other units.
NOTE 1—When tests are performed for research purposes, useful
1.5 This standard does not purport to address all of the
additional information can be obtained by determining fineness, chemical
safety concerns, if any, associated with its use. It is the
and compound compositions.
responsibility of the user of this standard to establish appro-
3.3 Determination of the heat of hydration of hydraulic
priate safety and health practices and determine the applica-
bility or regulatory limitations prior to use. Warning—Fresh cements provides information that is helpful for calculating
hydraulic cementitious mixtures are caustic and may cause temperature rise in mass concrete.
2
chemical burns to skin and tissue upon prolonged exposure.
4. Apparatus
2. Referenced Documents
4.1 Calorimetric Apparatus:
3
2.1 ASTM Standards:
4.1.1 Calorimeter—The calorimeter, such as that illustrated
C109/C109M Test Method for Compressive Strength of
in Fig. 1, shall consist of a 0.5 L, wide-mouth vacuum jar, with
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
cork stopper, or other suitable non-reactive stopper held in a
Specimens)
suitably insulated container (see 4.1.2) to keep the vacuum jar
C114 Test Methods for Chemical Analysis of Hydraulic
in position and to protect the jar from undue temperature
Cement
fluctuations. The vacuum jar shall be coated on the interior
with a material resistant to hydrofluoric acid, such as a baked
1 phenolic resin, a baked vinyl chloride acetate resin, or bees-
This test method is under the jurisdiction ofASTM Committee C01 on Cement
and is the direct responsibility of Subcommittee C01.26 on Heat of Hydration.
wax. The acid-resistant coating shall be intact and free of
Current edition approved April 1, 2015. Published May 2015. Originally
cracksatalltimes;itshallbeexaminedfrequentlyandrenewed
approved in 1944. Last previous edition approved in 2015 as C186 – 15. DOI:
whenever necessary. As another means of protecting the
10.1520/C0186-15A.
2
vacuum jar, a plastic liner of suitable size may be used instead
Section on Safety, Manual of Cement Testing, Annual Book of ASTM
Standards, Vol 04.01.
of coating the interior of the jar.The contents of the vacuum jar
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
shall not change more than 0.001°C/min per degree difference
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
from room temperature when filled with 425 g of the acid
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. specified in 6.2, stoppered, and allowed to stand unstirred for
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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...
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: C186 − 15 C186 − 15a
Standard Test Method for
1
Heat of Hydration of Hydraulic Cement
This standard is issued under the fixed designation C186; 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 test method covers the determination of the heat of hydration of a hydraulic cement by measuring the heat of solution
of the dry cement and the heat of solution of a separate portion of the cement that has been partially hydrated for 7 and for 28 days,
the difference between these values being the heat of hydration for the respective hydrating period.
1.2 The results of this test method may be inaccurate if some of the components of the hydraulic cement are insoluble in the
nitric acid/hydrofluoric acid solution.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 Values in SI units shall be obtained by measurement in SI units or by appropriate conversion, using the Rules for Conversion
and Rounding given in Standard IEEE/ASTM SI 10, or measurements made in other units.
1.5 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 or regulatory
limitations prior to use. Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and
2
tissue upon prolonged exposure.
2. Referenced Documents
3
2.1 ASTM Standards:
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
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
C1005 Specification for Reference Masses and Devices for Determining Mass and Volume for Use in the Physical Testing of
Hydraulic Cements
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
IEEE/ASTM SI 10 Standard for Use of the International System of Units (SI): The Modern Metric System
3. Significance and Use
3.1 The purpose of this test is to determine if the hydraulic cement under test meets the heat of hydration requirement of the
applicable hydraulic cement specification.
3.2 This test may also be used for research purposes when it is desired to determine the heat of hydration of hydraulic cement
at any age.
NOTE 1—When tests are performed for research purposes, useful additional information can be obtained by determining fineness, chemical and
compound compositions.
3.3 Determination of the heat of hydration of hydraulic cements provides information that is helpful for calculating temperature
rise in mass concrete.
4. Apparatus
4.1 Calorimetric Apparatus:
1
This test method is under the jurisdiction of ASTM Committee C01 on Cement and is the direct responsibility of Subcommittee C01.26 on Heat of Hydration.
Current edition approved Jan. 1, 2015April 1, 2015. Published January 2015May 2015. Originally approved in 1944. Last previous edition approved in 20132015 as
C186 – 13.C186 – 15. DOI: 10.1520/C0186-15.10.1520/C0186-15A.
2
Section on Safety, Manual of Cement Testing, Annual Book of ASTM Standards, Vol 04.01.
3
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C186 − 15a
4.1.1 Calorimeter—The calorimeter, such as that illustrated in Fig. 1, shall consist of a 0.5-L,0.5 L, wide-mouth vacuum jar,
with cork stopper, or other suitable non-reactive stopper held in a suitably insulated container (see 4.1.2) to keep the vacuum jar
in position and to protect the jar from undue temperature fluctuations. The vacuum jar shall be coated on the interior with a material
resistant to hydrofluoric acid, such as a baked phenolic resin, a baked vinyl chloride acetate resin, or beeswax. The acid-resistant
coating shall be intact and free of cracks at all times; it shall be
...
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