ASTM C1505-15

Standard Test Method for Determination of Breaking Strength and Modulus of Rupture of Ceramic Tiles and Glass Tiles by Three-Point Loading

SIGNIFICANCE AND USE
5.1 This test method is intended for determining the breaking strength and modulus of rupture of ceramic tiles and glass tiles for compliance with requirements that may appear in specifications.
SCOPE
1.1 This test method covers the determination of breaking strength and modulus of rupture of ceramic tiles and glass tiles by three-point loading.  
1.2 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered 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.

General Information

• Status: Historical
• Publication Date: 30-Nov-2015
• ICS: 91.100.25 - Terracotta building products
• Technical Committee: C21 - Ceramic Whitewares and Related Products
• Drafting Committee: C21.06 - Ceramic Tile

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C1505 − 15
Standard Test Method for
Determination of Breaking Strength and Modulus of Rupture
1
of Ceramic Tiles and Glass Tiles by Three-Point Loading
This standard is issued under the fixed designation C1505; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope dimensions of the tile specimen, and the span between the
support rods. Optionally, the deflection at which the tile failure
1.1 This test method covers the determination of breaking
is observed may be reported.
strength and modulus of rupture of ceramic tiles and glass tiles
by three-point loading.
5. Significance and Use
1.2 Units—The values stated in SI units are to be regarded
5.1 This test method is intended for determining the break-
as standard. The values given in parentheses are mathematical
ing strength and modulus of rupture of ceramic tiles and glass
conversions to inch-pound units that are provided for informa-
tiles for compliance with requirements that may appear in
tion only and are not considered standard.
specifications.
1.3 This standard does not purport to address all of the
6. Apparatus
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
6.1 Testing Machine, capable of loading at a uniform rate
priate safety and health practices and determine the applica-
sufficient to increase the stress in the specimen at a rate of 1 6
2
bility of regulatory limitations prior to use.
0.2N/mm (145 629psi)persecond.Atminimum,thetesting
machine shall record loading data at the point at which
2. Referenced Documents
specimen failure is observed. Optionally, the testing machine
2
2.1 ASTM Standards:
may record deflection data.The rod support table of the testing
C242Terminology of Ceramic Whitewares and Related machine shall be adjustable such that the cylindrical support
Products
rods can accommodate a variety of specimen sizes.
6.2 Cylindrical Support Rods, 2, of length, w, with a steel
3. Terminology
core of diameter, d, and a rubber bearing surface of 55 6 3
3.1 For the definitions of terms used on this test method,
ShoreAdurometerhardnessandthickness,t(seeTable1).One
refer to Terminology C242.
rodshallbepermittedtopivotslightlyrelativetoitslengthand
the other shall be permitted to rotate slightly relative to its axis
4. Summary of Test Method
(see Fig. 1).
4.1 This test method consists of determining the breaking
6.3 Central Cylindrical Rod, of length, w, with a steel core
strength and modulus of rupture of ceramic tiles and glass tiles
of diameter, d, and a rubber bearing surface of 55 6 3 ShoreA
using a three-point loading method. The tiles are supported on
durometerhardnessandthickness,t.Therodshallbepermitted
two cylindrical support rods positioned to provide an appro-
to pivot slightly relative to its axis.
priate span. A load is applied at a uniform rate using a third
central cylindrical rod positioned at the midpoint between the
7. Sampling
supportrods.Thebreakingstrengthandmodulusofruptureare
7.1 The test sample shall consist of ten whole tiles, selected
calculated using the load at which tile failure is observed, the
at random from the lot to be tested. Tiles too large to be tested
whole may be cut; however, the cut specimens shall be square
1
ThistestmethodisunderthejurisdictionofASTMCommitteeC21onCeramic and as large as possible, though not larger than the rod length.
Whitewares and Related Products and is the direct responsibility of Subcommittee
The centerpoint of the cut specimen shall coincide with the
C21.06 on Ceramic Tile.
original centerpoint of the whole tile.
Current edition approved Dec. 1, 2015. Published January 2016. Originally
approved in 2001. Last previous edition approved in 2007 as C1505–01(2007).
8. Procedure
DOI: 10.1520/C1505-15.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
8.1 Position the cylindrical support rods (6.2) on the rod
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
support plate (6.2) with an appropriate span, L, so that the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. specimens will overhang each support rod by length, l (see
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C1505 − 15
TABLE 1 Length of Rod, Diameter of Core, Thickness of Rubber,
9.2 Calculate the modulus of rupture of each specimen
and Overhang (See Fig. 2)
using the following equation:
Minimum Length of Diame
...

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: C1505 − 01 (Reapproved 2007) C1505 − 15
Standard Test Method for
Determination of Breaking Strength of Ceramic Tiles and
Modulus of Rupture of Ceramic Tiles and Glass Tiles by
1
Three-Point Loading
This standard is issued under the fixed designation C1505; 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 breaking strength of ceramic tiles and modulus of rupture of ceramic tiles and
glass tiles by three-point loading.
1.2 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical
conversions to inch-pound units that are provided for information only and are not considered 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:
C242 Terminology of Ceramic Whitewares and Related Products
3. Terminology
3.1 For the definitions of terms used on this test method, refer to Terminology C242.
4. Summary of Test Method
4.1 This test method consists of determining the breaking strength of ceramic tiles and modulus of rupture of ceramic tiles and
glass tiles using a three-point loading method. The tiles are supported on two cylindrical support rods positioned to provide an
appropriate span. A load is applied at a uniform rate using a third central cylindrical rod positioned at the midpoint between the
support rods. The breaking strength is calculated by multiplying and modulus of rupture are calculated using the load at which the
tile breaks by the ratio of the span between support rods divided by the width of the specimen.tile failure is observed, the
dimensions of the tile specimen, and the span between the support rods. Optionally, the deflection at which the tile failure is
observed may be reported.
5. Significance and Use
5.1 This test method is intended for determining the breaking strength of ceramic tiles and modulus of rupture of ceramic tiles
and glass tiles for compliance with requirements that may appear in specifications.
6. Apparatus
6.1 Testing Machine, capable of loading at a uniform rate sufficient to increase the stress in the specimen at a rate of 1 6 0.2
2
N/mm (145 6 29 psi) per second. At minimum, the testing machine shall record loading data at the point at which specimen failure
is observed. Optionally, the testing machine may record deflection data. The rod support table of the testing machine shall be
indexedadjustable such that the cylindrical support rods are positioned at 4 mm increments. can accommodate a variety of
specimen sizes.
1
This test method is under the jurisdiction of ASTM Committee C21 on Ceramic Whitewares and Related Products and is the direct responsibility of Subcommittee C21.06
on Ceramic Tile.
Current edition approved May 1, 2007Dec. 1, 2015. Published May 2007January 2016. Originally approved in 2001. Last previous edition approved in 20012007 as
C1505C1505 – 01 (2007).–01 DOI: 10.1520/C1505-01R07.10.1520/C1505-15.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1505 − 15
6.2 Cylindrical Support Rods, 2, of length, w, with a steel core of diameter, d, and a rubber bearing surface of 55 6 3 Shore
A durometer hardness and thickness, t (see Table 1). One rod shall be permitted to pivot slightly relative to its length and the other
shall be permitted to rotate slightly relative to its axis (see Fig. 1).
6.3 Central Cylindrical Rod, of length, w, with a steel core of diameter, d, and a rubber bearing surface of 55 6 3 Shore A
durometer hardness and thickness, t. The rod shall be permitted to pivot slightly relative to its axis.
7. Sampling
7.1 The test sample shall consist of ten whole tiles, selected at random from the lot
...