ASTM C942/C942M-21
(Test Method)Standard Test Method for Compressive Strength of Grouts for Preplaced-Aggregate Concrete in the Laboratory
Standard Test Method for Compressive Strength of Grouts for Preplaced-Aggregate Concrete in the Laboratory
SIGNIFICANCE AND USE
5.1 This test method affords a means for determining the compressive strength of grouts that expand and, in use, harden under conditions of partial to total restraint.
5.2 It is particularly applicable for determining the effect on compressive strength of grout fluidifier to be used with grout for PA concrete (See Specification C937).
SCOPE
1.1 This test method covers the determination of the compressive strength of hydraulic cement grout for preplaced-aggregate (PA) concrete.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
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. Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to skin and tissue upon prolonged exposure.2
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.
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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: C942/C942M − 21
Standard Test Method for
Compressive Strength of Grouts for Preplaced-Aggregate
1
Concrete in the Laboratory
This standard is issued under the fixed designation C942/C942M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* C109/C109M Test Method for Compressive Strength of
Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube
1.1 This test method covers the determination of the com-
Specimens)
pressive strength of hydraulic cement grout for preplaced-
C125 Terminology Relating to Concrete and Concrete Ag-
aggregate (PA) concrete.
gregates
1.2 The values stated in either SI units or inch-pound units
C219 Terminology Relating to Hydraulic and Other Inor-
are to be regarded separately as standard. The values stated in
ganic Cements
each system are not necessarily exact equivalents; therefore, to
C937 Specification for Grout Fluidifier for Preplaced-
ensure conformance with the standard, each system shall be
Aggregate Concrete
used independently of the other, and values from the two
C938 Practice for Proportioning Grout Mixtures for
systems shall not be combined.
Preplaced-Aggregate Concrete
1.3 This standard does not purport to address all of the C939 Test Method for Flow of Grout for Preplaced-
safety concerns, if any, associated with its use. It is the
Aggregate Concrete (Flow Cone Method)
responsibility of the user of this standard to establish appro- C1437 Test Method for Flow of Hydraulic Cement Mortar
priate safety, health, and environmental practices and deter-
3. Terminology
mine the applicability of regulatory limitations prior to use.
Warning—Fresh hydraulic cementitious mixtures are caustic
3.1 Definitions:
and may cause chemical burns to skin and tissue upon
3.1.1 For definitions of terms used in this test method, refer
2
prolonged exposure.
to Terminologies C125 and C219.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4. Summary of Test Method
ization established in the Decision on Principles for the
4.1 Compressive strength of hardened grout is determined
Development of International Standards, Guides and Recom-
using top-restrained cubes as defined in Test Method C109/
mendations issued by the World Trade Organization Technical
C109M.
Barriers to Trade (TBT) Committee.
5. Significance and Use
2. Referenced Documents
5.1 This test method affords a means for determining the
3
2.1 ASTM Standards:
compressive strength of grouts that expand and, in use, harden
C31/C31M Practice for Making and Curing Concrete Test
under conditions of partial to total restraint.
Specimens in the Field
5.2 It is particularly applicable for determining the effect on
compressive strength of grout fluidifier to be used with grout
1
This test method is under the jurisdiction of ASTM Committee C09 on
for PA concrete (See Specification C937).
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee
C09.41 on Hydraulic Cement Grouts.
6. Apparatus
Current edition approved April 1, 2021. Published April 2021. Originally
approved in 1981. Last previous edition approved in 2015 as C942–15. DOI:
6.1 Scales, masses, sieves, glass graduates, and three-gang
10.1520/C0942-21
molds, for 50 mm [2 in.] cube specimens, baseplates, trowel,
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing,
and testing machine as specified in Test Method C109/C109M.
Annual Book of ASTM Standards, Vol. 04.02.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.2 Plates, to cover specimen molds, capable of supporting
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the weight or being held down by C-clamps, as described in
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 10.3.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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C942/C942M − 21
6.3 Mass of 7 kg [15 lb] or C-clamps, for holding down the 10.3.3 Place the cover plate over the mold (three-gang),
cover plates. taking care that the grout or loose grains of sand do not prevent
seating of the plate.
7. Temperature and Humidity
1
...
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: C942 − 15 C942/C942M − 21
Standard Test Method for
Compressive Strength of Grouts for Preplaced-Aggregate
1
Concrete in the Laboratory
This standard is issued under the fixed designation C942;C942/C942M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This test method covers the determination of the compressive strength of hydraulic cement grout for preplaced-aggregate (PA)
concrete.
1.2 The values stated in either SI units or inch-pound units are to be regarded as standard.separately as standard. The values stated
in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
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 and health practices and determine the applicability of regulatory
limitations prior to use.
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. Warning—Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns
2
to skin and tissue upon prolonged exposure.
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.
2. Referenced Documents
3
2.1 ASTM Standards:
C31/C31M Practice for Making and Curing Concrete Test Specimens in the Field
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50 mm] Cube Specimens)
C125 Terminology Relating to Concrete and Concrete Aggregates
C219 Terminology Relating to Hydraulic and Other Inorganic Cements
C937 Specification for Grout Fluidifier for Preplaced-Aggregate Concrete
C938 Practice for Proportioning Grout Mixtures for Preplaced-Aggregate Concrete
1
This test method is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregates and is the direct responsibility of Subcommittee C09.41 on
Hydraulic Cement Grouts.
Current edition approved Aug. 1, 2015April 1, 2021. Published October 2015April 2021. Originally approved in 1981. Last previous edition approved in 20102015 as
C942–10.–15. DOI: 10.1520/C0942-1510.1520/C0942-21
2
Section on Safety Precautions, Manual of Aggregate and Concrete Testing, Annual Book of ASTM Standards, Vol. 04.02.
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.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C942/C942M − 21
C939 Test Method for Flow of Grout for Preplaced-Aggregate Concrete (Flow Cone Method)
C1437 Test Method for Flow of Hydraulic Cement Mortar
3. Terminology
3.1 Definitions:
3.1.1 For definitions of terms used in this test method, refer to Terminologies C125 and C219.
4. Summary of Test Method
4.1 Compressive strength of hardened grout is determined using top-restrained cubes as defined in Test Method C109/C109M.
5. Significance and Use
5.1 This test method affords a means for determining the compressive strength of grouts that expand and, in use, harden under
conditions of partial to total restraint.
5.2 It is particularly applicable for determining the effect on compressive strength of grout fluidifier to be used with grout for PA
concrete (See Specification C937).
6. Apparatus
6.1 Scales, masses, sieves, glass graduates, and three-gang molds, for 2-in. (or 50-mm)
...
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