ASTM C241/C241M-09
(Test Method)Standard Test Method for Abrasion Resistance of Stone Subjected to Foot Traffic
Standard Test Method for Abrasion Resistance of Stone Subjected to Foot Traffic
SIGNIFICANCE AND USE
This test method is useful in indicating the differences in abrasion resistance between the various building 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 abrasion resistance of all types of stones for floors, steps, and similar uses where the wear is caused by the abrasion of foot traffic.
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.
1.2.1 Exception—The formula for calculation of the result of this test method relies on the use of SI units; all measurements of weight in this test method shall be recorded in SI units. See 9.1 and 10.1.
1.3 This standard does not purport to address 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: C241/C241M − 09
StandardTest Method for
1
Abrasion Resistance of Stone Subjected to Foot Traffic
This standard is issued under the fixed designation C241/C241M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the abra- 4.1 Thistestmethodisusefulinindicatingthedifferencesin
sion resistance of all types of stones for floors, steps, and abrasion resistance between the various building stones. This
similar uses where the wear is caused by the abrasion of foot test method also provides one element in comparing stones of
traffic. the same type.
1.2 Units—The values stated in either SI units or inch-
5. Apparatus
pound units are to be regarded separately as standard. The
5.1 The abrasion testing apparatus shown in Fig. 1 shall be
values stated in each system may not be exact equivalents;
used. This apparatus consists essentially of a power-driven
therefore,eachsystemshallbeusedindependentlyoftheother.
grinding lap, A, 10 in. [250 mm] in diameter, which is revolved
Combining values from the two systems may result in non-
at 45 rpm; three specimen holders, B, with superimposed
conformance with the standard.
weights; gears, C, for revolving the specimen; and a means of
1.2.1 Exception—The formula for calculation of the result
feeding abrasive at a constant rate to the lap. The guide rings,
of this test method relies on the use of SI units; all measure-
D,areclampedinpositionslightlyabovethespecimenholders,
ments of weight in this test method shall be recorded in SI
andthe2000gweightbearingonthespecimenisthecombined
units. See 9.1 and 10.1.
weight of the specimen holder, vertical shaft above with the
1.3 This standard does not purport to address the safety
attached spur gear, and a weight hopper, E, containing addi-
concerns, if any, associated with its use. It is the responsibility
tional adjustment weights. The frame, F, carrying the guide
of the user of this standard to establish appropriate safety and
rings is adjustable vertically to accommodate different speci-
health practices and determine the applicability of regulatory
men thicknesses. Gears, C, are adjusted on the shafts for each
limitations prior to use.
specimen thickness, so that they are slightly above the plate, G,
2. Referenced Documents throughout the test.
2
2.1 ASTM Standards:
6. Sampling
C97 Test Methods forAbsorption and Bulk Specific Gravity
6.1 The sample may be selected by the purchaser or his
of Dimension Stone
authorized agent but shall represent the average quality of the
C119 Terminology Relating to Dimension Stone
type or grade of stone under consideration. It shall be of
C1353 Test Method for Abrasion Resistance of Dimension
sufficient size to permit the preparation of at least three test
Stone Subjected to Foot Traffic Using a Rotary Platform,
specimens, and one face should have the finish to be exposed
Double-Head Abraser
to traffic. The sample preferably should be 1 in. [25 mm] thick
3. Terminology
and 8 in. [200 mm] square.
3.1 Definitions—All definitions are in accordance with Ter-
7. Test Specimens
minology C119.
7.1 At least three specimens 2 in. [50 mm] square and
1
preferably 1 in. [25 mm] in thickness shall be sawed from the
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
sample. The sharp edges shall be rounded by grinding to a
Methods.
1
radius of approximately ⁄32 in. [1 mm] in order to prevent
Current edition approved April 1, 2009. Published April 2009. Originally
crumbling during the test.
approved in 1950. Last previous edition approved in 2005 as C241–90(2005). DOI:
10.1520/C0241_C0241M-09.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 8. Conditioning
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
8.1 Dry the specimens for 48 h in a ventilated oven at a
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. temperature of 140 6 4°F [60 6 2°C]. At the 46th, 47th, and
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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C241/C241M − 09
FIG. 1 Apparatus for Abrasion Resistance Test of Stone
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C241/C241M − 09
48th hour, weigh the specimens to ensure that the weight is the 10.
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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:C241–90 (Reapproved 2005) Designation: C 241/C 241M – 09
Standard Test Method for
1
Abrasion Resistance of Stone Subjected to Foot Traffic
This standard is issued under the fixed designation C 241/C 241M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This test method covers the determination of the abrasion resistance of all types of stones for floors, steps, and similar uses
where the wear is caused by the abrasion of foot traffic.
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.
1.2.1 Exception—The formula for calculation of the result of this test method relies on the use of SI units; all measurements
of weight in this test method shall be recorded in SI units. See 9.1 and 10.1.
1.3 This standard does not purport to address 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:
C97 Test Methods for Absorption and Bulk Specific Gravity of Dimension Stone
C119 Terminology Relating to Dimension Stone Terminology Relating to Dimension Stone
C 1353 Test Method Using the Taber Abraser for Abrasion Resistance of Dimension Stone Subjected to Foot Traffic
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 abrasion resistance between the various building stones. This test
method also provides one element in comparing stones of the same type.
5. Apparatus
5.1 The abrasion testing apparatus shown in Fig. 1 shall be used. This apparatus consists essentially of a power-driven grinding
lap, A, 10 in. (254 mm)[250 mm] in diameter, which is revolved at 45 rpm; three specimen holders, B, with superimposed weights;
gears, C, for revolving the specimen; and a means of feeding abrasive at a constant rate to the lap.The guide rings, D, are clamped
in position slightly above the specimen holders, and the 2000-g2000 g weight bearing on the specimen is the combined weight of
the specimen holder, vertical shaft above with the attached spur gear, and a weight hopper, E, containing additional adjustment
weights. The frame, F, carrying the guide rings is adjustable vertically to accommodate different specimen thicknesses. Gears, C,
are adjusted on the shafts for each specimen thickness, so that they are slightly above the plate, G, throughout the test.
6. Sampling
6.1 The sample may be selected by the purchaser or his authorized agent but shall represent the average quality of the type or
grade of stone under consideration. It shall be of sufficient size to permit the preparation of at least three test specimens, and one
face should have the finish to be exposed to traffic.The sample preferably should be 1 in. (25.4 mm)[25 mm] thick and 8 in. (203.2
mm)[200 mm] square.
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 Nov. 1, 2005. Published November 2005. Originally approved in 1950 as C241–50T. Last previous edition approved in 1997 as C241–90(1997).
Current edition approved April 1, 2009. Published April 2009. Originally approved in 1950. Last previous edition approved in 2005 as C 241–90(2005).
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
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C 241/C 241M – 09
FIG. 1 Apparatus for Abrasion Resistance Test of Stone
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