ASTM C806-23

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.
Designation: C806 − 23
Standard Test Method for
1
Restrained Expansion of Expansive Cement Mortar
This standard is issued under the fixed designation C806; 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* Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube
Specimens)
1.1 This test method covers the determination of length
C150 Specification for Portland Cement
changes of expansive cement mortar, while under restraint, due
C157/C157M Test Method for Length Change of Hardened
to the development of internal forces resulting from hydration
Hydraulic-Cement Mortar and Concrete
of the cement.
C219 Terminology Relating to Hydraulic and Other Inor-
1.2 The values stated in inch-pound units are to be regarded
ganic Cements
as standard. The values given in parentheses are mathematical
C305 Practice for Mechanical Mixing of Hydraulic Cement
conversions to SI units that are provided for information only
Pastes and Mortars of Plastic Consistency
and are not considered standard.
C490/C490M Practice for Use of Apparatus for the Deter-
1.3 The text of this standard references notes and footnotes mination of Length Change of Hardened Cement Paste,
Mortar, and Concrete
which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered C595 Specification for Blended Hydraulic Cements
C670 Practice for Preparing Precision and Bias Statements
as requirements of this standard.
for Test Methods for Construction Materials
1.4 This standard does not purport to address all of the
C778 Specification for Standard Sand
safety concerns, if any, associated with its use. It is the
C845 Specification for Expansive Hydraulic Cement
responsibility of the user of this standard to establish appro-
C1005 Specification for Reference Masses and Devices for
priate safety, health, and environmental practices and deter-
Determining Mass and Volume for Use in Physical Testing
mine the applicability of regulatory limitations prior to use.
of Hydraulic Cements
(Warning—Fresh hydraulic cement mixtures are caustic and
2
F606/F606M Test Methods for Determining the Mechanical
may cause burns to skin and tissue upon prolonged exposure. )
Properties of Externally and Internally Threaded
1.5 This international standard was developed in accor-
Fasteners, Washers, Direct Tension Indicators, and Rivets
dance with internationally recognized principles on standard-
4
ization established in the Decision on Principles for the
2.2 ACI Documents:
Development of International Standards, Guides and Recom- ACI 223 Shrinkage – Compensating Concrete – Guide
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions of terms used in this test method are given in
2. Referenced Documents
Terminology C219.
3
2.1 ASTM Standards:
3.2 Definitions:
A307 Specification for Carbon Steel Bolts, Studs, and
3.2.1 expansive component system, n—a combination of
Threaded Rod 60 000 PSI Tensile Strength
portland cement conforming to Specification C150 or portland-
C109/C109M Test Method for Compressive Strength of
limestone cement conforming to Specification C595 and an
expansive component that, when mixed with water, forms a
paste that increases in volume after setting.
1
This test method is under the jurisdiction of ASTM Committee C01 on Cement
3.2.1.1 Discussion—The expansive component system is an
and is the direct responsibility of Subcommittee C01.13 on Special Cements.
Current edition approved Dec. 15, 2023. Published December 2023. Originally
alternate way to produce a cement that meets Specification
approved in 1975. Last previous edition approved in 2018 as C806 – 18. DOI:
C845 performance requirements. Expansive component system
10.1520/C0806-23.
is also defined in ACI 223.
2
Section of 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
4
Standards volume information, refer to the standard’s Document Summary page on Available from American Concrete Institute (ACI), 38800 Country Club Dr.,
the ASTM website. Farmington Hills, MI 48331-3439, http://www.concrete.org.
*A Summary of Changes section appears at the end of this standard
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