ASTM C99/C99M-15
(Test Method)Standard Test Method for Modulus of Rupture of Dimension Stone
Standard Test Method for Modulus of Rupture of Dimension Stone
SIGNIFICANCE AND USE
4.1 This test method is useful in indicating the differences in modulus of rupture 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 determination of the modulus of rupture of all types of dimension stone except slate.
1.2 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.
1.3 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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Designation: C99/C99M − 15
Standard Test Method for
1
Modulus of Rupture of Dimension Stone
This standard is issued under the fixed designation C99/C99M; 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 5.2 Load Application and Support Blocks—The supports for
the specimen shall be of the rocker type (Fig. 1) with edges at
1.1 This test method covers the determination of the modu-
least as long as the width of the specimen.The load application
lus of rupture of all types of dimension stone except slate.
block may be of either the rocker or rigid type. The portions of
1.2 The values stated in either SI units or inch-pound units
the load application and support blocks contacting the stone
are to be regarded separately as standard. The values stated in
1
shall be rounded, with a nominal radius of ⁄2 in. [13 mm].
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
6. Sampling
values from the two systems may result in non-conformance
6.1 Select the sample to represent a true average of the type
with the standard.
or grade of stone under consideration and of the quality
1.3 This standard does not purport to address all of the
supplied to the market under the type designation to be tested.
safety concerns, if any, associated with its use. It is the
The sample may be selected by the purchaser or his authorized
responsibility of the user of this standard to establish appro-
representativefromthequarriedstoneortakenfromthenatural
priate safety and health practices and determine the applica-
ledge and shall be of adequate size to permit the preparation of
bility of regulatory limitations prior to use.
the desired number of test specimens. When perceptible
variations occur, the purchaser may select as many samples as
2. Referenced Documents
are necessary for determining the variations in modulus of
2
2.1 ASTM Standards:
rupture.
C119 Terminology Relating to Dimension Stone
NOTE 1—Refer to Guide C1799 for additional information on selecting,
C1799 Guide to Dimension Stone Test Specimen Sampling
preparing, and conditioning test specimens.
and Preparation
7. Test Specimens
3. Terminology
1
7.1 The specimens shall be 4 by 8 by 2 ⁄4 in. [100 by 200 by
3.1 Definitions—All definitions are in accordance with Ter-
1
60 mm] in size and fabricated to tolerances of 6 ⁄16 in. [62
minology C119.
mm]. They shall be sawed from the sample and finished by
4. Significance and Use
grinding to smooth surfaces. The 4 by 8-in. [100 by 200-mm]
faces shall be as nearly plane and parallel as practicable. For
4.1 This test method is useful in indicating the differences in
loading perpendicular to the rift (Note 2) five specimens shall
modulus of rupture between the various dimension stones.This
be prepared with the 4 by 8-in. [100 by 200-mm] faces parallel
test method also provides one element in comparing stones of
to the rift planes (see Fig. 1), and for loading parallel to the rift,
the same type.
1
five specimens shall be prepared with the 4 by 2 ⁄4-in. [100 by
5. Apparatus
60-mm] faces parallel to the rift (Note 3). When tests are
5.1 Testing Machine—The accuracy of the testing machine desired on the stone in both the wet and dry condition, ten
shall be within 1 % for the range from 10 to 1000 lbf [50 to specimens shall be prepared for each direction of loading; that
5000 N]. is, five for tests dry, perpendicular to the rift, five for tests wet,
perpendicular to the rift, etc.
1
This test method is under the jurisdiction of ASTM Committee C18 on
NOTE 2—The term rift is used here to designate the direction in which
Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test
the stone splits most easily. In stratified stones it is considered to coincide
Methods.
with the bedding or stratification. The rift direction should always be
CurrenteditionapprovedMay1,2015.PublishedJuly2015.Originallyapproved
marked on the sample by the quarryman, since it often is not possible to
in 1931. Last previous edition approved in 2009 as C99–09. DOI: 10.1520/C0099
determine it on a small block.
_C0099M-15.
2
NOTE 3—Another condition of loading may occur in structures when
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the rift planes are vertical and parallel to the length of the beam. The
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 strength of the stone may be obtained for such loading by cutting the
1
the ASTM website. specimens with
...
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: C99/C99M − 09 C99/C99M − 15
Standard Test Method for
1
Modulus of Rupture of Dimension Stone
This standard is issued under the fixed designation C99/C99M; 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 determination of the modulus of rupture of all types of dimension stone except slate.
1.2 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.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C119 Terminology Relating to Dimension Stone
C1799 Guide to Dimension Stone Test Specimen Sampling and Preparation
3. Terminology
3.1 Definitions—All definitions are in accordance with Terminology C119.
4. Significance and Use
4.1 This test method is useful in indicating the differences in modulus of rupture 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—The accuracy of the testing machine shall be within 1 % for the range from 10 to 1000 lbf [50 to 5000
N].
5.2 Load Application and Support Blocks—The supports for the specimen shall be of the rocker type (Fig. 1) with edges at least
as long as the width of the specimen. The load application block may be of either the rocker or rigid type. The portions of the load
1
application and support blocks contacting the stone shall be rounded, with a nominal radius of ⁄2 in. [13 mm].
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
from the quarried stone or taken from the natural 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 are necessary for determining
the variations in modulus of rupture.
NOTE 1—Refer to Guide C1799 for additional information on selecting, preparing, and conditioning test specimens.
7. Test Specimens
1 1
7.1 The specimens shall be 4 by 8 by 2 ⁄4 in. [100 by 200 by 60 mm] in size and fabricated to tolerances of 6 ⁄16 in. [62 mm].
They shall be sawed from the sample and finished by grinding to smooth surfaces. The 4 by 8-in. [100 by 200-mm] faces shall
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 April 1, 2009May 1, 2015. Published April 2009July 2015. Originally approved in 1931. Last previous edition approved in 20082009 as
C99–08.–09. DOI: 10.1520/C0099_C0099M-09.10.1520/C0099_C0099M-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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 the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C99/C99M − 15
SI Unit Equivalents
1
2 ⁄4 in. [60 mm]
1
3 ⁄2 in. [90 mm]
4 in. [100 mm]
8 in. [200 mm]
FIG. 1 Specimens and Preferred Type of Load Application and Support Blocks for Determining the Modulus of Rupture of Building
Stone
be as nearly plane and parallel as practicable. For loading perpendicular to the rift (Note 12) five specimens shall be prepared with
the 4 by 8-in. [100 by 200-mm] faces parallel to the rift planes (see Fig. 1), and for loading parallel to the rift, five specimens shall
1
be prepared with the 4 by 2 ⁄4-in. [100 by 60-mm] faces parallel to the rift (Note 23). When tests
...
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