Standard Practice for Measuring Hydration Kinetics of Hydraulic Cementitious Mixtures Using Isothermal Calorimetry

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

27-02-2023

Publisher

American Society for Testing and Materials

1.1This practice describes the apparatus and procedure for measuring relative differences in hydration kinetics of hydraulic cementitious mixtures, either in paste or mortar (see Note 1), including those containing admixtures, various supplementary cementitious materials (SCM), and other fine materials by measuring the thermal power using an isothermal calorimeter.

Note 1:Paste specimens are often preferred for mechanistic research when details of individual reaction peaks are important or for particular calorimetry configurations. Mortar specimens may give results that have better correlation with concrete setting and early strength development and are often preferred to evaluate different mixture proportions for concrete. Both paste and mortar studies have been found to be effective in evaluating concrete field problems due to incompatibility of materials used in concrete mixtures.

1.2This practice does not cover the measurement of heat of hydration. Heat of hydration can be determined according to Test Method C1702.

1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4This 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. (Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2)

1.5This 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.

Committee	C 09
DocumentType	Standard Practice
Pages	15
PublisherName	American Society for Testing and Materials
Status	Current
Supersedes	ASTM C 1679 : 2017

ASTM C 563 : 2020	Standard Guide for Approximation of Optimum SO<inf>3</inf> in Hydraulic Cement
ASTM C 1753/C1753M : 2021 : REV A	Standard Practice for Evaluating Early Hydration of Hydraulic Cementitious Mixtures Using Thermal Measurements
ASTM C 1709 : 2022	Standard Guide for Evaluation of Alternative Supplementary Cementitious Materials (ASCM) for Use in Concrete
ASTM C 1702 : 2017	Standard Test Method for Measurement of Heat of Hydration of Hydraulic Cementitious Materials Using Isothermal Conduction Calorimetry

ASTM C 305 : 2014	Standard Practice for Mechanical Mixing of Hydraulic Cement Pastes and Mortars of Plastic Consistency
ASTM C 219 : 2020 : REV A	Standard Terminology Relating to Hydraulic and Other Inorganic Cements
ASTM C 1702 : 2017	Standard Test Method for Measurement of Heat of Hydration of Hydraulic Cementitious Materials Using Isothermal Conduction Calorimetry
ASTM C 403/C403M : 2023	Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance
ASTM C 403/C403M : 2016	Standard Test Method for Time of Setting of Concrete Mixtures by Penetration Resistance
ASTM C 172/C172M : 2014 : REV A	Standard Practice for Sampling Freshly Mixed Concrete
ASTM C 1702 : 2023	Standard Test Method for Measurement of Heat of Hydration of Hydraulic Cementitious Materials Using Isothermal Conduction Calorimetry
ASTM C 219 : 2024	Standard Terminology Relating to Hydraulic and Other Inorganic Cements