ASTM C1874-19

Standard Test Method for Measuring the Rheological Properties of Cementitious Materials Using a Coaxial Rotational Rheometer

SIGNIFICANCE AND USE
5.1 Rheological properties provide information about the workability of cementitious paste or mortar. This test method may be used to measure flowability of a cement paste or the influence of a specific material or combination of materials on flowability.  
5.2 As rheological properties are sensitive to sample heterogeneities, special care is needed using this procedure so that sedimentation, particle migration away from the spindle or slippage at the surface of the spindle and container, is avoided.
SCOPE
1.1 This test method is used to measure the rheological properties such as plastic viscosity and yield stress of cementitious materials with particles up to 1 mm in diameter.  
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 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: Historical
• Publication Date: 14-Dec-2019
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C01 - Cement
• Drafting Committee: C01.22 - Workability

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C1874 − 19
Standard Test Method for
Measuring the Rheological Properties of Cementitious
1
Materials Using a Coaxial Rotational Rheometer
This standard is issued under the fixed designation C1874; 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 C1749 GuideforMeasurementoftheRheologicalProperties
of Hydraulic Cementious Paste Using a Rotational Rhe-
1.1 This test method is used to measure the rheological
ometer
properties such as plastic viscosity and yield stress of cemen-
titious materials with particles up to 1 mm in diameter.
3. Terminology
1.2 The values stated in SI units are to be regarded as
3.1 Definitions:
standard. No other units of measurement are included in this
3.1.1 For definitions of terms used in this test method, refer
standard.
to Terminology C125 and Terminology C219.
1.3 This standard does not purport to address all of the
3.2 Definitions of Terms Specific to This Standard:
safety concerns, if any, associated with its use. It is the
3.2.1 shear rate, n—the rate of change of the shear strain
responsibility of the user of this standard to establish appro-
with time.
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priate safety, health, and environmental practices and deter-
3.2.1.1 Discussion—The shear strain is the relative in-
mine the applicability of regulatory limitations prior to use.
plane displacement of two parallel layers in a material body
-1
1.4 This international standard was developed in accor-
divided by the separation distance, in units of s .
dance with internationally recognized principles on standard-
3.2.2 shear stress, n—The component of stress that causes
ization established in the Decision on Principles for the
successive parallel layers of a material body to move, in their
Development of International Standards, Guides and Recom-
own planes (that is, plane of shear), relative to each other, in
mendations issued by the World Trade Organization Technical
units of Pa.
Barriers to Trade (TBT) Committee.
3.2.3 relative viscosity, n—the ratio between the viscosity of
2. Referenced Documents a material and the viscosity of a reference material as a
2
function of shear rate, both viscosities measured using the
2.1 ASTM Standards:
same rheometer and with the same procedure.
C125 Terminology Relating to Concrete and Concrete Ag-
gregates
4. Summary of Test Method
C219 Terminology Relating to Hydraulic and Other Inor-
4.1 This method allows the measurement of the shear stress
ganic Cements
of cementitious paste or mortar, using a rotational rheometer
C305 Practice for Mechanical Mixing of Hydraulic Cement
withvariousspindlegeometries.Theplasticviscosityandyield
Pastes and Mortars of Plastic Consistency
stress are determined per the Bingham model.
C1005 Specification for Reference Masses and Devices for
Determining Mass and Volume for Use in the Physical
4.2 As cementitious slurries are thixotropic, the shear his-
Testing of Hydraulic Cements
tory has an impact on the rheological measurements; mixing
-1
C1602/C1602M Specification for Mixing Water Used in the
the sample, for instance 200 s for 60 s, is needed to ensure
Production of Hydraulic Cement Concrete
correct preparation of the sample, prior to the measurements.
C1738/C1738M Practice for High-Shear Mixing of Hydrau-
4.3 This mixing procedure is followed by the measurements
lic Cement Pastes
of the shear stress evolution as a function of the shear rate in
-1 -1
the range of 0.1 s to 50 s . Before the standardization of the
1
This test method is under the jurisdiction ofASTM Committee C01 on Cement
rheometer, the shear rate needs to be measured in terms of
and is the direct responsibility of Subcommittee C01.22 on Workability.
rotational speed in units of rad/s.
Current edition approved Dec. 15, 2019. Published January 2020. DOI: 10.1520/
C1874-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Hackley V. A, Ferraris C.F., “The Use of Nomenclature in Dispersion Science
Standards volume information, refer to the standard’s Document Summary page on and Technology” NIST Recommended Practice Guide, SP 960-3, 2001, http://
the ASTM website. www.nist.gov/customcf/get_pdf.cfm?pub_id=850489.
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C1874 − 19
the distance between the highest points on any surface protrusion.
5. Significance and Use
7.3 Container—The rheometer container shall be made of
5.1 Rheological properties provi
...