Standard Test Method for Compressive Strength of Masonry Prisms

SCOPE
1.1 This test method covers procedures for masonry prism construction and testing, and procedures for determining the compressive strength of masonry, f'mt', used to determine compliance with the specified compressive strength of masonry,  f `m'. When this test method is used for research purposes, the construction and test procedures within serve as a guideline and provide control parameters.
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-Jan-2002
Drafting Committee
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ASTM C1314-00a - Standard Test Method for Compressive Strength of Masonry Prisms
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1314 – 00a
Standard Test Method for
1
Compressive Strength of Masonry Prisms
This standard is issued under the fixed designation C 1314; 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 * meets the specified compressive strength.
4.2 If this test method is used as a guideline for performing
1.1 This test method covers procedures for masonry prism
research to determine the effects of various prism construction
construction and testing, and procedures for determining the
or test parameters on the compressive strength of masonry,
compressive strength of masonry, f , used to determine
mt
deviations from this test method shall be permitted, provided
compliance with the specified compressive strength of ma-
they are reported. Such research prisms shall not be used to
sonry, f 8 . When this test method is used for research
m
verify compliance with a specified compressive strength of
purposes, the construction and test procedures within serve as
masonry.
a guideline and provide control parameters.
4.3 The testing laboratory performing this test method shall
1.2 The values stated in inch-pound units are to be regarded
be certified in accordance with Practice C 1093.
as the standard. The values given in parentheses are for
information only.
NOTE 1—Testing should be overseen by an individual who has dem-
1.3 This standard does not purport to address all of the
onstrated sufficient knowledge and ability through written and practical
examination. Such laboratory technician certification programs are avail-
safety concerns, if any, associated with its use. It is the
able through the National Concrete Masonry Association and others.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
5. Masonry Prism Construction
bility of regulatory limitations prior to use.
5.1 Construct prisms of units representative of those used in
1
2. Referenced Documents the construction. If units have flutes or ribs that project ⁄2 in.
(12.5 mm) or more from the surface of the unit, remove those
2.1 ASTM Standards:
flutes or ribs by saw cutting flush with the surface of the unit
C 67 Test Methods for Sampling and Testing Brick and
2
at the base of the flute or rib.
Structural Clay Tile
5.2 Construct a set of prisms for each combination of
C 140 Test Methods for Sampling and Testing Concrete
2
materials and each test age at which the compressive strength
Masonry Units and Related Units
of masonry is to be determined.
C 1093 Practice for Accreditation of Testing Agencies for
2
5.3 Build each prism in an opened, moisture-tight bag large
Unit Masonry
enough to enclose and seal the completed prism. Construct
3. Terminology prisms on a flat, level base. Construct prisms in a location
where they will remain undisturbed until transported for
3.1 Definitions:
testing.
3.1.1 set—a set consists of at least three prisms constructed
5.4 Construct prisms as shown in Fig. 1 with units laid in
of the same material and tested at the same age.
stack bond in stretcher position. Orient units in the prism as in
3.2 Notations:
the corresponding construction. At the time of prism construc-
3.2.1 f 8 —specified compressive strength of masonry.
m
tion, the surfaces of the units shall be free of moisture. Where
3.2.2 f —compressive strength of masonry.
mt
the corresponding construction is of multi-wythe masonry
3.2.3 h —prism height.
p
having wythes composed of different units or mortar, build
3.2.4 t —least actual lateral dimension of prism.
p
prisms representative of each different wythe and test sepa-
4. Significance and Use
rately.
5.5 The length of masonry prisms may be reduced from that
4.1 This test method provides a means of verifying that
of an individual unit by saw cutting units prior to prism
masonry materials used in construction result in masonry that
construction. Prisms composed of units that contain closed
cells shall have at least one complete cell with one full-width
1
This test method is under the jurisdiction of ASTM Committee C15 on
cross web on either end (see Fig. 2). Prisms composed of units
Manufactured Masonry Units and is the direct responsibility of Subcommittee
C15.04 on Research.
without closed cells shall have as symmetrical a cross section
Current edition approved Nov. 10, 2000. Published December 2000. Originally
as possible. The minimum length of prisms shall be 4 in. (100
published as C 1314–95. Last previous edition C 1314–00.
2 mm).
Annual Book of ASTM Standards, Vol 04.05.
*A Summary of Changes section appears at the end of this standard.
...

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