ASTM C617/C617M-12
(Practice)Standard Practice for Capping Cylindrical Concrete Specimens
Standard Practice for Capping Cylindrical Concrete Specimens
SIGNIFICANCE AND USE
3.1 This practice describes procedures for providing plane surfaces on the ends of freshly molded concrete cylinders, hardened cylinders, or drilled concrete cores when the end surfaces do not conform with the planeness and perpendicularity requirements of applicable standards. Practice C1231/C1231M describes alternative procedures using unbonded caps or pad caps.
SCOPE
1.1 This practice covers apparatus, materials, and procedures for capping freshly molded concrete cylinders with neat cement and hardened cylinders and drilled concrete cores with high-strength gypsum paste or sulfur mortar.
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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific precaution statements see 4.3.1 and 6.2.4.1.
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Designation: C617/C617M − 12
StandardPractice for
1
Capping Cylindrical Concrete Specimens
This standard is issued under the fixed designation C617/C617M; 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.
3
1. Scope* 2.2 ANSI Standard:
B46.1 Standard for Surface Texture (Surface, Roughness,
1.1 This practice covers apparatus, materials, and proce-
Waviness and Lay)
dures for capping freshly molded concrete cylinders with neat
cement and hardened cylinders and drilled concrete cores with
3. Significance and Use
high-strength gypsum paste or sulfur mortar.
3.1 This practice describes procedures for providing plane
1.2 The values stated in either SI units or inch-pound units surfaces on the ends of freshly molded concrete cylinders,
hardened cylinders, or drilled concrete cores when the end
are to be regarded separately as standard. The values stated in
surfaces do not conform with the planeness and perpendicu-
each system may not be exact equivalents; therefore, each
larity requirements of applicable standards. Practice C1231/
system shall be used independently of the other. Combining
C1231Mdescribesalternativeproceduresusingunbondedcaps
values from the two systems may result in non-conformance
or pad caps.
with the standard.
1.3 This standard does not purport to address all of the
4. Capping Equipment
safety concerns, if any, associated with its use. It is the
4.1 Capping Plates—Neat cement caps and high-strength
responsibility of the user of this standard to establish appro-
gypsum-pastecapsshallbeformedagainstaglassplateatleast
priate safety and health practices and determine the applica-
1
6mm[ ⁄4 in.] thick, a machined metal plate at least 11 mm
bility of regulatory limitations prior to use. For specific
[0.45 in.] thick, or a polished plate of granite or diabase at least
precaution statements see 4.3.1 and 6.2.4.1.
75 mm [3 in.] thick. Sulfur mortar caps shall be formed against
similar metal or stone plates except that the recessed area
2. Referenced Documents
which receives molten sulfur shall not be deeper than 12 mm
2
1
[ ⁄2 in.]. In all cases, plates shall be at least 25 mm [1 in.]
2.1 ASTM Standards:
greater in diameter than the test specimen and the working
C109/C109M Test Method for Compressive Strength of
surfaces shall not depart from a plane by more than 0.05 mm
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
[0.002 in.] in 150 mm [6 in.]. The surface roughness of newly
Specimens)
finished metal plates shall not exceed that set forth in Table 4
C150 Specification for Portland Cement
ofAmerican National Standard B46.1, or 3.2 µm [125 µin.] for
C472 Test Methods for Physical Testing of Gypsum, Gyp-
any type of surface and direction of lay. The surface, when
sum Plasters and Gypsum Concrete
new, shall be free of gouges, grooves, or indentations beyond
C595 Specification for Blended Hydraulic Cements
those caused by the finishing operation. Metal plates that have
C1231/C1231M Practice for Use of Unbonded Caps in
been in use shall be free of gouges, grooves, and indentations
DeterminationofCompressiveStrengthofHardenedCon-
2
greater than 0.25 mm [0.010 in.] deep or greater than 30 mm
crete Cylinders
2
[0.05 in. ] in surface area.
NOTE 1—A Rockwell hardness of 48 HRC is suggested for capping
plates of devices used to form sulfur mortar caps.
1
This practice is under the jurisdiction of ASTM Committee C09 on Concrete
andConcreteAggregatesandisthedirectresponsibilityofSubcommitteeC09.61on 4.2 AlignmentDevices—Suitablealignmentdevices,suchas
Testing for Strength.
guide bars or bull’s-eye levels, shall be used in conjunction
Current edition approved Nov. 15, 2012. Published December 2012. Originally
with capping plates to ensure that no single cap will depart
approved in 1968. Last previous edition approved in 2011 as C617 – 11. DOI:
from perpendicularity to the axis of a cylindrical specimen by
10.1520/C0617_C0617M-12.
2
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
3
Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
*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
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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: C617/C617M − 11 C617/C617M − 12
Standard Practice for
1
Capping Cylindrical Concrete Specimens
This standard is issued under the fixed designation C617/C617M; 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 Department of Defense.
1. Scope*
1.1 This practice covers apparatus, materials, and procedures for capping freshly molded concrete cylinders with neat cement
and hardened cylinders and drilled concrete cores with high-strength gypsum paste or sulfur mortar.
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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the 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 and health practices and determine the applicability of regulatory
limitations prior to use. For specific precaution statements see 4.3.1 and 6.2.4.1.
2. Referenced Documents
2
2.1 ASTM Standards:
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C150 Specification for Portland Cement
C472 Test Methods for Physical Testing of Gypsum, Gypsum Plasters and Gypsum Concrete
C595 Specification for Blended Hydraulic Cements
C1231/C1231M Practice for Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders
3
2.2 ANSI Standard:
B46.1 Standard for Surface Texture (Surface, Roughness, Waviness and Lay)
3. Significance and Use
3.1 This practice describes procedures for providing plane surfaces on the ends of freshly molded concrete cylinders, hardened
cylinders, or drilled concrete cores when the end surfaces do not conform with the planeness and perpendicularity requirements
of applicable standards. Practice C1231/C1231M describes alternative procedures using unbonded caps or pad caps.
4. Capping Equipment
4.1 Capping Plates—Neat cement caps and high-strength gypsum-paste caps shall be formed against a glass plate at least 6 mm
1
[ ⁄4 in.] thick, a machined metal plate at least 11 mm [0.45 in.] thick, or a polished plate of granite or diabase at least 75 mm [3
in.] thick. Sulfur mortar caps shall be formed against similar metal or stone plates except that the recessed area which receives
1
molten sulfur shall not be deeper than 12 mm [ ⁄2 in.]. In all cases, plates shall be at least 25 mm [1 in.] greater in diameter than
the test specimen and the working surfaces shall not depart from a plane by more than 0.05 mm [0.002 in.] in 150 mm [6 in.]. The
surface roughness of newly finished metal plates shall not exceed that set forth in Table 4 of American National Standard B46.1,
or 3.2 μm [125 μin.] for any type of surface and direction of lay. The surface, when new, shall be free of gouges, grooves, or
1
This practice is under the jurisdiction of ASTM Committee C09 on Concrete and Concrete Aggregatesand is the direct responsibility of Subcommittee C09.61 on Testing
for Strength.
Current edition approved Aug. 1, 2011Nov. 15, 2012. Published September 2011December 2012. Originally approved in 1968. Last previous edition approved in 20102011
as C617–10.–11. DOI: 10.1520/C0617_C0617M-11.10.1520/C0617_C0617M-12.
2
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.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
*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 ----------------------
C617/C617M − 12
indentations beyond those caused by the finishing operation. Metal plates that have been in use shall be free of gouges, grooves,
2 2
and indentations greater than 0.25 mm [0.010 in.] deep o
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