ASTM C880/C880M-18e1

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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Designation: C880/C880M − 18
Standard Test Method for
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Flexural Strength of Dimension Stone
This standard is issued under the fixed designation C880/C880M; 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.
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ε NOTE—In 9.2 the value in brackets was corrected editorially from [4 MPa] to [4 MPa ⁄min] in May 2022.
1. Scope C119 Terminology Relating to Dimension Stone
C1799 Guide to Dimension Stone Test Specimen Sampling
1.1 This test method covers the procedure for determining
and Preparation
the flexural strength of stone by use of a simple beam using
quarter-point loading.
3. Terminology
1.2 Stone tests shall be made when pertinent for the situa-
3.1 Definitions—All definitions are in accordance with Ter-
tion when the load is perpendicular to the bedding plane and
minology C119.
when the load is parallel to the bedding plane.
4. Significance and Use
1.3 As required, the flexural tests shall also be conducted
4.1 Thistestmethodisusefulinindicatingthedifferencesin
under wet conditions.
flexural strength between the various dimension stones. This
1.4 The values stated in either SI units or inch-pound units
test method also provides one element in comparing stones of
are to be regarded separately as standard. The values stated in
the same type.
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
5. Apparatus
values from the two systems may result in non-conformance
5.1 Testing Machine (Fig. 1), conforming to the require-
with the standard.
ments of the applicable sections of Practices E4. The quarter-
1.5 This standard does not purport to address all of the
point loading method shall be used in making flexure tests of
safety concerns, if any, associated with its use. It is the
stone employing bearing blocks which will ensure that forces
responsibility of the user of this standard to establish appro-
applied to the beam will be vertical only and applied without
priate safety, health, and environmental practices and deter-
eccentricity. The apparatus should be capable of maintaining
mine the applicability of regulatory limitations prior to use.
the span length and distances between load-applying blocks
1.6 This international standard was developed in accor-
and support blocks constant within 60.05 in. [61 mm]. The
dance with internationally recognized principles on standard-
load should be capable of being applied at a uniform rate and
ization established in the Decision on Principles for the
in such a manner as to avoid shock.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 6. Sampling
Barriers to Trade (TBT) Committee.
6.1 Select the sample to represent a true average of the type
or grade of stone under consideration and of the quality
2. Referenced Documents
supplied to the market under the type designation to be tested.
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2.1 ASTM Standards:
The sample may be selected by the purchaser or his authorized
E4 Practices for Force Calibration and Verification of Test-
representativefromthequarriedstoneortakenfromthenatural
ing Machines
ledge and shall be of adequate size to permit the preparation of
the desired number of test specimens. When perceptible
variations occur, the purchaser may select as many samples as
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This test method is under the jurisdiction of ASTM Committee C18 on
are necessary for determining the variations in flexural
Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test
strength.
Methods.
Current edition approved Oct. 1, 2018. Published October 2018. Originally NOTE 1—Refer to Guide C1799 for additional information on selecting,
approved in 1978. Last previous edition approved in 2015 as C880–15. DOI:
preparing, and conditioning test specimens.
10.1520/C0880_C0880M-18E01.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or 7. Test Specimen
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.1 The test specimens shall measure 4 in. [100 mm] wide
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. by 1.25 in. [30 mm] thick by 15 in. [350 mm] long, with a span
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C880/C880M − 18
NOTE 1—Apparatus may be used inverted.
FIG
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