ASTM C1823/C1823M-20

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.
Designation: C1823/C1823M − 20
Standard Test Method for
1
Shear Bond Strength of Adhered Dimension Stone
This standard is issued under the fixed designation C1823/C1823M; 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 3. Terminology
1.1 This test method is used for determining the shear bond 3.1 Definitions: All definitions are in accordance with Ter-
strength of dimension stone wall or floor assembly adhered to minology C119.
a substrate.
3.1.1 adhesive, n—a material used to bond the stone to its
substrate.
1.2 This test method was developed for adhered stone
applications and may be used in a laboratory or in the field.
3.1.2 adhesive contact or coverage, n—the percentage of
net adhesive contact to bondable surface area.
1.3 Testing is performed on cured stone assemblies on a
vertical or horizontal plane in an interior or exterior applica-
3.1.3 adhesive failure, n—the failure that occurs at the
tion. Load is applied to one edge of the stone. The load is
interface between any two component materials of the stone
applied at a specified rate until the stone assembly fails.
assembly as a result of the specimen being subjected to a load
applied by the test apparatus.
1.4 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. The values stated in
3.1.4 bondable surface area, n—the area of the back of a
each system are not necessarily exact equivalents; therefore, to stone unit that is intended to be bonded to its substrate.
ensure conformance with the standard, each system shall be
3.1.5 cohesive failure , n—the failure that occurs within any
used independently of the other, and values from the two
of the component materials of the stone assembly.
systems shall not be combined.
3.1.6 gross shear bond strength, n—the ultimate test load
1.5 This standard does not purport to address all of the
divided by the gross area of the test specimen.
safety concerns, if any, associated with its use. It is the
3.1.7 hollow sound, n—when acoustically testing a stone
responsibility of the user of this standard to establish appro-
surfacewithahard-denseobject,hearingahollowsoundmight
priate safety, health, and environmental practices and deter-
indicate that portion of the tile is not bonded or has a void
mine the applicability of regulatory limitations prior to use.
beneath it.
1.6 This international standard was developed in accor-
3.1.7.1 Discussion—The hollow sound should have a dis-
dance with internationally recognized principles on standard-
cernibly different sound than a solid sound, but might be
ization established in the Decision on Principles for the
indicative of the underlying assembly and not relate to the tile
Development of International Standards, Guides and Recom-
attachment.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3.1.8 net adhesive contact area, n—the bondable surface
area less the areas of voids in the adhesive.
2. Referenced Documents
3.1.9 net shear bond strength, n—the ultimate test load
2
2.1 ASTM Standards:
divided by the net adhesive contact areas.
C119 Terminology Relating to Dimension Stone
3.1.10 solid sound, n—when acoustically testing a stone
D4580 Practice for Measuring Delaminations in Concrete
surface with a hard-dense object, hearing a solid sound might
Bridge Decks by Sounding
indicate that portion of the tile is bonded in those spots.
3.1.10.1 Discussion—The solid sound should have a dis-
cernably different sound than a hollow sound, but might be
1
This test method is under the jurisdiction of ASTM Committee C18 on
indicative of the underlying assembly and not relate to the tile
Dimension Stone and is the direct responsibility of Subcommittee C18.01 on Test
Methods. attachment.
Current edition approved Aug. 1, 2020. Published September 2020. DOI:
3.1.11 stone unit, n—an individual tile or panel adhered to a
10.1520/C1823_C1823M-20.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or substrate.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3.1.12 specimen, n—an individual stone unit, or a piece of
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. stone that is cut from a stone unit, to be used for testing.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---
...