ASTM C241/C241M-20

Standard Test Method for Abrasion Resistance of Stone Subjected to Foot Traffic

SIGNIFICANCE AND USE
5.1 This test method is useful in indicating the differences in abrasion resistance between various building stones. This test method also provides one element in comparing stones of the same type.
Note 1: Test Method C1353/C1353M is an alternative method to evaluate abrasion resistance for stone subjected to foot traffic, but is not applicable for hard and coarse-grained stones such as granite. Preliminary assessments by Subcommittee C18.03 indicate it results in similar Ha values as established by this method.
SCOPE
1.1 This test method covers the determination of abrasion resistance of all types of stones for floors, steps, and similar uses where the wear is caused by foot traffic.  
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.  
1.2.1 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 10.1 and 11.1.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

General Information

• Status: Historical
• Publication Date: 31-Oct-2020
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: C18 - Dimension Stone
• Drafting Committee: C18.01 - Test Methods

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C241/C241M − 20
Standard Test 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 U.S. Department of Defense.
1. Scope* Dimension Stone Subjected to FootTraffic Using a Rotary
Platform Abraser
1.1 This test method covers the determination of abrasion
C1799/C1799M Guide to Dimension Stone Test Specimen
resistance of all types of stones for floors, steps, and similar
Sampling and Preparation
uses where the wear is caused by foot traffic.
3. Terminology
1.2 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
3.1 Definitions—All definitions are in accordance with Ter-
each system may not be exact equivalents; therefore, each
minology C119.
system shall be used independently of the other. Combining
4. Summary of Test Method
values from the two systems may result in non-conformance
with the standard.
4.1 Three stone specimens are mounted in a holder that
1.2.1 Exception—The formula for calculation of the result
rotates in the same direction as the grinding lap, but at a
of this test method relies on the use of SI units; all measure-
differentspeed.Whilethegrindinglapandthespecimenrotate,
ments of weight in this test method shall be recorded in SI
a loose abrasive grit flows onto the grinding lap to abrade the
units. See 10.1 and 11.1.
bottom of the specimens. Each specimen supports a load of 4.4
1.3 This standard does not purport to address all of the lb [2000 g], which includes the weight of the specimen holder,
safety concerns, if any, associated with its use. It is the but not the specimen itself. The abrasion resistance index,
which is proportional to the volume abraded, is calculated for
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- each specimen using the average weight (before and after
abrading), the weight loss, and the apparent density.
mine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accor-
5. Significance and Use
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 5.1 Thistestmethodisusefulinindicatingthedifferencesin
Development of International Standards, Guides and Recom- abrasion resistance between various building stones. This test
mendations issued by the World Trade Organization Technical method also provides one element in comparing stones of the
Barriers to Trade (TBT) Committee. same type.
NOTE 1—Test Method C1353/C1353M is an alternative method to
evaluate abrasion resistance for stone subjected to foot traffic, but is not
2. Referenced Documents
applicable for hard and coarse-grained stones such as granite. Preliminary
2
2.1 ASTM Standards:
assessments by Subcommittee C18.03 indicate it results in similar H
a
values as established by this method.
C97/C97M Test Methods for Absorption and Bulk Specific
Gravity of Dimension Stone
6. Apparatus
C119 Terminology Relating to Dimension Stone
6.1 The abrasion testing apparatus shall consist of the
C1353/C1353M Test Method for Abrasion Resistance of
elements described in 6.1.1 to 6.1.6 (see Fig. 1).
6.1.1 A power-driven grinding lap, A, which is 10 in. [250
1
This test method is under the jurisdiction of ASTM Committee C18 on
mm] in diameter and revolves counter-clockwise at a speed of
Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test
45 r/min. Connected to the grinding lap shall be a vertical
Methods.
center drive shaft that includes a gear to drive three shafts with
Current edition approved Nov. 1, 2020. Published December 2020. Originally
ɛ1
specimen holders;
approved in 1950. Last previous edition approved in 2015 as C241–15 . DOI:
10.1520/C0241_C0241M-20.
6.1.2 Three shafts, that are located 3 in. [76 mm] rad at 120°
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
from the center drive shaft; can move vertically and include:
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
6.1.2.1 A detachable specimen holder, B, to secure test
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. specimens as specified in 8.1;
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West C
...

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.
´1
Designation: C241/C241M − 15 C241/C241M − 20
Standard Test 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 U.S. Department of Defense.
1
ε NOTE—Note 3 was removed editorially in August 2015.
1. Scope 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 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 9.110.1 and 10.111.1.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C97C97/C97M Test Methods for Absorption and Bulk Specific Gravity of Dimension Stone
C119 Terminology Relating to Dimension Stone
C1353C1353/C1353M Test Method for Abrasion Resistance of Dimension Stone Subjected to Foot Traffic Using a Rotary
Platform Abraser
C1799C1799/C1799M Guide to Dimension Stone Test Specimen Sampling and Preparation
3. Terminology
3.1 Definitions—All definitions are in accordance with Terminology C119.
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 May 1, 2015Nov. 1, 2020. Published July 2015December 2020. Originally approved in 1950. Last previous edition approved in 2015 as
ɛ1
C241–15.–15 . DOI: 10.1520/C0241_C0241M-15E01.10.1520/C0241_C0241M-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C241/C241M − 20
4. Summary of Test Method
4.1 Three stone specimens are mounted in a holder that rotates in the same direction as the grinding lap, but at a different speed.
While the grinding lap and the specimen rotate, a loose abrasive grit flows onto the grinding lap to abrade the bottom of the
specimens. Each specimen supports a load of 4.4 lb [2000 g], which includes the weight of the specimen holder, but not the
specimen itself. The abrasion resistance index, which is proportional to the volume abraded, is calculated for each specimen using
the average weight (before and after abrading), the weight loss, and the apparent density.
5. Significance and Use
5.1 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.
NOTE 1—Test Method C1353/C1353M is an alternative method to evaluate abrasion resistance for stone subjected to foot traffic, but is not applicable for
hard and coarse-grained stones such as granite. Preliminary assessments by Subcommittee C18.03 indicate it results in similar H values as established
a
by this method.
6. Ap
...