ASTM C880/C880M-09
(Test Method)Standard Test Method for Flexural Strength of Dimension Stone
Standard Test Method for Flexural Strength of Dimension Stone
SIGNIFICANCE AND USE
This test method is useful in indicating the differences in flexural strength between the various dimension stones. This test method also provides one element in comparing stones of the same type.
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 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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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.
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Designation: C880/C880M − 09
Standard Test Method for
1
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.
1. Scope 4. Significance and Use
1.1 This test method covers the procedure for determining 4.1 Thistestmethodisusefulinindicatingthedifferencesin
the flexural strength of stone by use of a simple beam using flexural strength between the various dimension stones. This
quarter-point loading. test method also provides one element in comparing stones of
the same type.
1.2 Stone tests shall be made when pertinent for the situa-
tion when the load is perpendicular to the bedding plane and
5. Apparatus
when the load is parallel to the bedding plane.
5.1 Testing Machine (Fig. 1), conforming to the require-
1.3 As required, the flexural tests shall also be conducted
ments of the applicable sections of Practices E4. The quarter-
under wet conditions.
point loading method shall be used in making flexure tests of
stone employing bearing blocks which will ensure that forces
1.4 Units—The values stated in either SI units or inch-
applied to the beam will be vertical only and applied without
pound units are to be regarded separately as standard. The
eccentricity. The apparatus should be capable of maintaining
values stated in each system may not be exact equivalents;
the span length and distances between load-applying blocks
therefore, each system shall be used independently of the other.
and support blocks constant within 60.05 in. [61 mm]. The
Combining values from the two systems may result in non-
load should be capable of being applied at a uniform rate and
conformance with the standard.
in such a manner as to avoid shock.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
6. Sampling
responsibility of the user of this standard to establish appro-
6.1 Select the sample to represent a true average of the type
priate safety and health practices and determine the applica-
or grade of stone under consideration and of the quality
bility of regulatory limitations prior to use.
supplied to the market under the type designation to be tested.
The sample may be selected by the purchaser or his authorized
2. Referenced Documents
representativefromthequarriedstoneortakenfromthenatural
2
2.1 ASTM Standards:
ledge and shall be of adequate size to permit the preparation of
E4 Practices for Force Verification of Testing Machines
the desired number of test specimens. When perceptible
C119 Terminology Relating to Dimension Stone
variations occur, the purchaser may select as many samples as
are necessary for determining the variations in flexural
3. Terminology
strength.
3.1 Definitions—All definitions are in accordance with Ter-
7. Test Specimen
minology C119.
7.1 The test specimens shall measure 4 in. [100 mm] wide
by 1.25 in. [30 mm] thick by 15 in. [350 mm] long, with a span
1
as tested of 12.5 in. [300 mm]. The sides of the specimen shall
This test method is under the jurisdiction of ASTM Committee C18 on
Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test
be at right angles with the top and bottom.The specimens shall
Methods.
have a fine abrasive finish on the planes perpendicular to the
Current edition approved April 1, 2009. Published April 2009. Originally
load and a fine saw finish on the other four planes. The
approved in 1978. Last previous edition approved in 2006 as C880–06. DOI:
10.1520/C0880_C0880M-09.
dimensions of the specimen shall be measured and recorded to
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the nearest 0.01 in. [0.1 mm]. A minimum of five specimens
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
shall be tested for each condition of test. The average value of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the test results is reported as the flexural strength of the stone.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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C880/C880M − 09
NOTE 1—Apparatus may be used inverted.
FIG. 1 Diagrammatic View of a Suitable Apparatus for Flexure Test of Stone
7.2 Where this test method is specified in the physical 8. Conditioning
requirements of an ASTM C18 Standard Specification for a
8.1 Before testing the specimens in a dry condition, dry
dimension stone, the test specimens shall meet the require-
them for 48 h at 140 6 4°F [60 6 2°C].At the 46th, 47th and
ments under 7.1.
48th hour, weigh the specimens to ensure that the weight is the
7.3 Where the job thic
...
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:C 880–06 Designation:C880/C880M–09
Standard Test Method for
1
Flexural Strength of Dimension Stone
This standard is issued under the fixed designation C 880/C 880M; 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 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.
1.4The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information
only.
1.4 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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the standard.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
E4 Practices for Force Verification of Testing Machines
C119 Terminology Relating to Dimension Stone
3. Terminology
3.1 Definitions—All definitions are in accordance with Terminology C 119.
4. Significance and Use
4.1 This test method is useful in indicating the differences in flexural strength between the various dimension stones. This test
method also provides one element in comparing stones of the same type.
5. Apparatus
5.1 Testing Machine (Fig. 1), conforming to the requirements of the applicable sections of Practices E 4. The quarter-point
loading method shall be used in making flexure tests of stone employing bearing blocks which will ensure that forces applied to
the beam will be vertical only and applied without eccentricity. The apparatus should be capable of maintaining the span length
and distances between load-applying blocks and support blocks constant within 61.3 mm (60.05 in.).60.05 in. [61 mm]. The
load should be capable of being applied at a uniform rate and in such a manner as to avoid shock.
6. Sampling
6.1 Select the sample to represent a true average of the type or grade of stone under consideration and of the quality supplied
to the market under the type designation to be tested.The sample may be selected by the purchaser or his authorized representative
fromthequarriedstoneortakenfromthenaturalledgeandshallbeofadequatesizetopermitthepreparationofthedesirednumber
of test specimens. When perceptible variations occur, the purchaser may select as many samples as are necessary for determining
the variations in flexural strength.
1
This test method is under the jurisdiction of ASTM Committee C18 on Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test Methods.
Current edition approved Feb.April 1, 2006.2009. Published February 2006.April 2009. Originally approved in 1978. Last previous edition approved in 19982006 as
C880–98.C 880–06.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
C880/C880M–09
NOTE—Apparatus may be used inverted.
FIG. 1 Diagrammatic View of a Suitable Apparatus for Flexure Test of Stone
7. Test Specimen
7.1 The test specimens shall measure 102 mm (4 in.)4 in. [100 mm] wide by 32 mm (1.25 in.)1.25 in. [30 mm] thick by 381
mm (15 in.)15 in. [350 mm] long, with a span as tested of 318 mm (12.5 in.).12.5 in. [300 mm]. The sides of the specimen shall
be at right angles with the top and bottom. The specimens shall have a fine abrasive finish on the planes perpendicular to the load
and a fine saw finish on the other four planes.
...
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