ASTM C1552/C1552M-23a
(Practice)Standard Practice for Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing
Standard Practice for Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing
SIGNIFICANCE AND USE
4.1 This practice describes procedures for providing plane surfaces on the two bearing surfaces of units and prisms. The purpose of this standard is to provide consistent and standardized procedures for capping units and prisms for compression testing. The procedures are based on those contained (or previously contained) in Test Methods C140/C140M, Practice C617/C617M, and Test Method C1314.
Note 2: Specimens capped using this practice will vary significantly in size and weight. Appropriate care and handling may differ based on specimen size and weight. Provide care and handling as needed to provide for proper capping based on the physical characteristics of the specimen being capped.
SCOPE
1.1 This practice covers apparatus, materials, and procedures for capping concrete masonry units, related units, including coupons or other specimens obtained from such units, and masonry prisms for compression testing.
Note 1: The testing laboratory performing these test methods should be evaluated in accordance with Practice C1093.
1.2 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.3 Units—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.
1.4 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.
1.5 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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Standards Content (Sample)
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: C1552/C1552M − 23a
Standard Practice for
Capping Concrete Masonry Units, Related Units and
1
Masonry Prisms for Compression Testing
This standard is issued under the fixed designation C1552/C1552M; 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* C140/C140M Test Methods for Sampling and Testing Con-
crete Masonry Units and Related Units
1.1 This practice covers apparatus, materials, and proce-
C617/C617M Practice for Capping Cylindrical Concrete
dures for capping concrete masonry units, related units, includ-
Specimens
ing coupons or other specimens obtained from such units, and
C1093 Practice for Accreditation of Testing Agencies for
masonry prisms for compression testing.
Masonry
NOTE 1—The testing laboratory performing these test methods should
C1232 Terminology for Masonry
be evaluated in accordance with Practice C1093.
C1314 Test Method for Compressive Strength of Masonry
1.2 The text of this standard refers to notes and footnotes
Prisms
that provide explanatory material. These notes and footnotes
3. Terminology
(excluding those in tables and figures) shall not be considered
as requirements of the standard.
3.1 Terminology defined in Terminology C1232 shall apply
for this practice.
1.3 Units—The values stated in either SI units or inch-
pound units are to be regarded separately as standard. The
4. Significance and Use
values stated in each system are not necessarily exact equiva-
4.1 This practice describes procedures for providing plane
lents; therefore, to ensure conformance with the standard, each
surfaces on the two bearing surfaces of units and prisms. The
system shall be used independently of the other, and values
purpose of this standard is to provide consistent and standard-
from the two systems shall not be combined.
ized procedures for capping units and prisms for compression
1.4 This standard does not purport to address all of the
testing. The procedures are based on those contained (or
safety concerns, if any, associated with its use. It is the
previously contained) in Test Methods C140/C140M, Practice
responsibility of the user of this standard to establish appro-
C617/C617M, and Test Method C1314.
priate safety, health, and environmental practices and deter-
NOTE 2—Specimens capped using this practice will vary significantly in
mine the applicability of regulatory limitations prior to use.
size and weight. Appropriate care and handling may differ based on
1.5 This international standard was developed in accor- specimen size and weight. Provide care and handling as needed to provide
for proper capping based on the physical characteristics of the specimen
dance with internationally recognized principles on standard-
being capped.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5. Apparatus
mendations issued by the World Trade Organization Technical
5.1 Capping Plate—If used, the capping plate shall be made
Barriers to Trade (TBT) Committee.
of steel having a thickness of not less than 25 mm [1 in.], or a
polished plate of granite or diabase at least 75 mm [3 in.] thick.
2. Referenced Documents
The capping surface shall be plane within 0.05 mm in 300 mm
2
2.1 ASTM Standards:
[0.002 in. in 12 in.] and shall be free of gouges, grooves, and
indentations greater than 0.25 mm [0.010 in.] deep or greater
2 2
than 30 mm [0.05 in. ] in surface area. At the time of capping,
1 1
This practice is under the jurisdiction of ASTM Committee C15 on Manufac-
the capping surface shall be level within 1.5 mm [ ⁄16 in.] over
tured Masonry Units and is the direct responsibility of Subcommittee C15.04 on
the length of the plate.
Research.
5.1.1 Capping Wear Plate—If used, the capping wear plate
Current edition approved Dec. 1, 2023. Published December 2023. Originally
shall be placed directly on top of the capping plate and shall
approved in 2002. Last previous edition approved in 2023 as C1552 – 23. DOI:
10.1520/C1552_C1552M-23A.
meet the requirements of 5.2. At the time of capping, the wear
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
plate surface shall be level within 1.5 mm [ ⁄16 in.] over the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
length of the plate. Do not use a capping wear plate with sulfur
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. capp
...
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: C1552 − 23 C1552/C1552M − 23a
Standard Practice for
Capping Concrete Masonry Units, Related Units and
1
Masonry Prisms for Compression Testing
This standard is issued under the fixed designation C1552;C1552/C1552M; 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*
1.1 This practice covers apparatus, materials, and procedures for capping concrete masonry units, related units, including coupons
or other specimens obtained from such units, and masonry prisms for compression testing.
NOTE 1—The testing laboratory performing these test methods should be evaluated in accordance with Practice C1093.
1.2 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding
those in tables and figures) shall not be considered as requirements of the standard.
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values given in
parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.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.
1.4 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.
1.5 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
2
2.1 ASTM Standards:
C140/C140M Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C617/C617M Practice for Capping Cylindrical Concrete Specimens
C1093 Practice for Accreditation of Testing Agencies for Masonry
C1232 Terminology for Masonry
C1314 Test Method for Compressive Strength of Masonry Prisms
3. Terminology
3.1 Terminology defined in Terminology C1232 shall apply for this practice.
1
This practice is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.04 on Research.
Current edition approved June 1, 2023Dec. 1, 2023. Published June 2023December 2023. Originally approved in 2002. Last previous edition approved in 20162023 as
C1552 – 16.C1552 – 23. DOI: 10.1520/C1552-23.10.1520/C1552_C1552M-23A.
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.
*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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C1552/C1552M − 23a
FIG. 1 Gypsum Capping Schematic
4. Significance and Use
4.1 This practice describes procedures for providing plane surfaces on the two bearing surfaces of units and prisms. The purpose
of this standard is to provide consistent and standardized procedures for capping units and prisms for compression testing. The
procedures are based on those contained (or previously contained) in Test Methods C140/C140M, Practice C617/C617M, and Test
Method C1314.
NOTE 2—Specimens capped using this practice will vary significantly in size and weight. Appropriate care and handling may differ based on specimen
size and weight. Provide care and handling as needed to provide for proper capping based on the physical characteristics of the specimen being capped.
5. Apparatus
5.1 Capping Plate—If used, the capping plate shall be made of steel having a thickness of not less than 1 in. (25.4 mm), 25 mm
[1 in.], or a polished plate of granite or diabase at least 3 in. (76 mm) 75 mm [3 in.] thick. The capping surface shall be plane wi
...
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