ASTM C880-98
(Test Method)Standard Test Method for Flexural Strength of Dimension Stone
Standard Test Method for Flexural Strength of Dimension Stone
SCOPE
1.1 This test method covers the procedure for determining the flexural strength of stone by use of a simple beam using quarter-point loading.
1.2 Stone tests shall be made when pertinent for the situation when the load is perpendicular to the bedding plane and when the load is parallel to the bedding plane.
1.3 As required, the flexural tests shall also be conducted under wet conditions.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C 880–98
Standard Test Method for
Flexural Strength of Dimension Stone
This standard is issued under the fixed designation C 880; 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 stone employing bearing blocks which will ensure that forces
applied to the beam will be vertical only and applied without
1.1 This test method covers the procedure for determining
eccentricity. The apparatus should be capable of maintaining
the flexural strength of stone by use of a simple beam using
the span length and distances between load-applying blocks
quarter-point loading.
and support blocks constant within 61.3 mm (60.05 in.). The
1.2 Stone tests shall be made when pertinent for the situa-
load should be capable of being applied at a uniform rate and
tion when the load is perpendicular to the bedding plane and
in such a manner as to avoid shock.
when the load is parallel to the bedding plane.
1.3 As required, the flexural tests shall also be conducted
6. Test Specimen
under wet conditions.
6.1 The test specimens shall measure 102 mm (4 in.) wide
1.4 The values stated in inch-pound units are to be regarded
by 32 mm (1.25 in.) thick by 381 mm (15 in.) long, with a span
as the standard. The values given in parentheses are for
as tested of 318 mm (12.5 in.). The sides of the specimen shall
information only.
be at right angles with the top and bottom.The specimens shall
1.5 This standard does not purport to address all of the
have a fine abrasive finish on the planes perpendicular to the
safety concerns, if any, associated with its use. It is the
load and a fine saw finish on the other four planes. The
responsibility of the user of this standard to establish appro-
dimensions of the specimen shall be measured and recorded to
priate safety and health practices and determine the applica-
the nearest 0.3 mm (0.01 in.). A minimum of five specimens
bility of regulatory limitations prior to use.
shall be tested for each condition of test. The average value of
2. Referenced Documents the test results is reported as the flexural strength of the stone.
6.2 Where this test method is specified in the physical
2.1 ASTM Standards:
requirements of an ASTM C-18 Standard Specification for a
E 4 Practices for Force Verification of Testing Machines
dimension stone, the test specimens shall meet the require-
C 119 Terminology Relating to Dimension Stone
ments under 6.1.
3. Terminology
6.3 Where the job thickness has been set (for example, the
thickness of the stone panels for the project has been estab-
3.1 Definitions—All definitions are in accordance with
lished), it is often requested to perform flexure tests at the job
Terminology C 119.
thickness. The following shall govern the specimen size where
4. Significance and Use
it is requested to test at the job thickness and the job thickness
is other than 32 mm (1.25 in.). The span as tested shall be 10
4.1 Thistestmethodisusefulinindicatingthedifferencesin
times the thickness.The specimen lengths shall be not less than
flexural strength between the various dimension stones. This
51 mm (2 in.) and not more than 102 mm (4 in.) greater than
test method also provides one element in comparing stones of
the span as tested. Where the thickness is less than 68 mm
the same type.
(2.67 in.), the width of the specimen shall be 102 mm (4 in.).
5. Apparatus
Where the thickness is greater than 68 mm (2.67 in.) the width
shall be 1.5 times the thickness. Where the thickness is other
5.1 Testing Machine (Fig. 1), conforming to the require-
than 32 mm (1.25 in.) and the specimen size is in accordance
ments of the applicable sections of Practices E 4. The quarter-
with the job thickness criteria noted in the foregoing, the
point loading method shall be used in making flexure tests of
average value of the test results shall be reported as the flexural
strength of the stone at the job thickness. All other require-
This test method is under the jurisdiction of ASTM Committee C-18 on
ments shall be in accordance with 6.1.
Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test
6.4 Where the job surface finish has been set (for example,
Methods.
the architectural finish on the panels for the project has been
Current edition approved Sept. 10, 1998. Published March 1999. Originally
published as C 880 – 78. Last previous edition C 880 – 96.
established), it is often requested to perf
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.