Standard Practice for Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing

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 C 1093.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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.

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Historical
Publication Date
09-Aug-2003
Drafting Committee
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ASTM C1552-03 - Standard Practice for Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1552 – 03
Standard Practice for
Capping Concrete Masonry Units, Related Units and
1
Masonry Prisms for Compression Testing
This standard is issued under the fixed designation C 1552; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 3. Terminology
1.1 This practice covers apparatus, materials, and proce- 3.1 Terminology defined in Terminology C 1209 and
dures for capping concrete masonry units, related units, includ- C 1232 shall apply for this practice.
ing coupons or other specimens obtained from such units, and
4. Significance and Use
masonry prisms for compression testing.
4.1 This practice describes procedures for providing plane
NOTE 1—The testing laboratory performing these test methods should
surfaces on the two bearing surfaces of units and prisms. The
be evaluated in accordance with Practice C 1093.
purpose of this standard is to provide consistent and standard-
1.2 The values stated in inch-pound units are to be regarded
ized procedures for capping units and prisms for compression
as the standard. The values given in parentheses are for
testing. The procedures are based on those contained (or
information only.
previously contained) in Methods C 140, C 617, and C 1314.
1.3 This standard does not purport to address all of the
NOTE 2—Specimens capped using this practice will vary significantly
safety concerns, if any, associated with its use. It is the
in size and weight. Appropriate care and handling may differ based on
responsibility of the user of this standard to establish appro-
specimen size and weight. Provide care and handling as needed to provide
priate safety and health practices and determine the applica-
for proper capping based on the physical characteristics of the specimen
bility of regulatory limitations prior to use.
being capped.
2. Referenced Documents
5. Apparatus
2
2.1 ASTM Standards:
5.1 Capping Plate—If used, the capping plate shall be of
C 140 Methods for Sampling and Testing Concrete Ma-
steel and have a thickness of not less than 1 in. (25.4 mm). The
sonry Units and Related Units
capping surface shall be plane within 0.003 in. in 16 in. (0.075
C 472 Methods for Physical Testing of Gypsum, Gypsum
mm in 400 mm) and shall be free of gouges, grooves, and
Plasters and Gypsum Concrete
indentations greater than 0.010 in. (0.25 mm) deep or greater
2 2
C 617 Practice for Capping Cylindrical Concrete Speci-
than 0.05 in. (32 mm ) in surface area. At the time of capping,
mens 1
the capping surface shall be level within ⁄16 in. (1.6 mm) over
C 1093 Practice for Accreditation of Testing Agencies for
the length of the plate.
Unit Masonry
NOTE 3—When using gypsum cement capping materials, the placement
C 1209 Terminology of Concrete Masonry Units and Re-
of a single glass plate directly on top of the capping plate has been found
lated Units
to reduce the potential of damage to the capping plate. The glass plate is
C 1232 Terminology of Masonry
typically more resistant to scratches and can be replaced at less cost than
C 1314 Method for Compressive Strength of Masonry
that required to resurface the capping plate. The requirements for the
Prisms casting plate in 5.2 have demonstrated to be sufficient for this purpose.
5.2 Casting Plate—If used, the casting plate shall be of
1
transparent glass with a thickness of not less than ⁄2 in. (13
1
This practice is under the jurisdiction of ASTM Committee C15 on Manufac-
mm). The casting plate shall be plane within 0.003 in. in 16 in.
tured Masonry Units and is the direct responsibility of Subcommittee C15.04 on
Research. (0.075 mm in 400 mm).
Current edition approved August 10, 2003. Published October 2003. Originally
approved in 2002. Last previous edition approved in 2002 as C 1552-02.
6. Materials
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Capping Materials:
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
6.1.1 High Strength Gypsum Cement Capping Materials:
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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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C1552–03
6.1.1.1 In addition to the compressive strength testing re- 7.2 Capping Test Specimens
...

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