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ASTM C1943-24

(Test Method)

Standard Test Method for Grout Retention Properties of Ceramic Tile

Standard Test Method for Grout Retention Properties of Ceramic Tile

SIGNIFICANCE AND USE
4.1 This test method provides a means for testing combinations of tile, grout, installation materials and installation practices to determine grout retention behavior. This method can be used by installers to determine if installation materials and techniques are synergetic; by tile and grout manufacturers to evaluate product performance and as a forensic tool to determine if an installation system was appropriate.  
FIG. 1 Tile That Has Retained Grout After Testing  
4.2 It is acceptable for other (mainly unglazed) ceramic tile surfaces to have some grout retention if it is light and evenly distributed.
SCOPE
1.1 This test method covers the testing and evaluation of grout retention on glazed and unglazed ceramic tile surfaces and is intended to give the user a uniform procedure to make a comparative assessment of specific tile and grout systems.  
1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.  
1.3 This qualitative method is intended to be used to visually detect abnormal grout retention for a specific tile and installation material system installed in a specified way.  
1.4 This method is intended to evaluate the specific grout and tile system specified and is not intended for test results to encompass other tile and grout combinations.  
1.5 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.  
1.6 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
Published
Publication Date
31-Jan-2024
Technical Committee
C21 - Ceramic Whitewares and Related Products
Drafting Committee
C21.06 - Ceramic Tile
Current Stage
Ref Project

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ASTM C1943-24 - Standard Test Method for Grout Retention Properties of Ceramic Tile
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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: C1943 − 24
Standard Test Method for
1
Grout Retention Properties of Ceramic Tile
This standard is issued under the fixed designation C1943; 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 This can be related to surface texture or porosity of the surface,
grout formulation, and/or installation practices. Fig. 1 is an
1.1 This test method covers the testing and evaluation of
example of a tile that retained grout after testing.
grout retention on glazed and unglazed ceramic tile surfaces
3.1.2 installation system protocol, n—the set of instructions
and is intended to give the user a uniform procedure to make
describing the conditions used to achieve requirements of the
a comparative assessment of specific tile and grout systems.
test.
1.2 The values stated in inch-pound units are to be regarded
3.1.2.1 Discussion—Typically based on, but not limited to,
as the standard. The values in parentheses are for information
the instructions provided by the manufacturers of the compo-
only.
nents used in the test. The complete set of procedures shall
1.3 This qualitative method is intended to be used to
determine the overall method for preparing tile, mixing grout,
visually detect abnormal grout retention for a specific tile and
applying grout, and subsequent grout clean up. This can vary
installation material system installed in a specified way.
based on the specific products selected or the outcome being
investigated using the test.
1.4 This method is intended to evaluate the specific grout
and tile system specified and is not intended for test results to
4. Significance and Use
encompass other tile and grout combinations.
4.1 This test method provides a means for testing combina-
1.5 This standard does not purport to address all of the
tions of tile, grout, installation materials and installation
safety concerns, if any, associated with its use. It is the
practices to determine grout retention behavior. This method
responsibility of the user of this standard to establish appro-
can be used by installers to determine if installation materials
priate safety, health, and environmental practices and deter-
and techniques are synergetic; by tile and grout manufacturers
mine the applicability of regulatory limitations prior to use.
to evaluate product performance and as a forensic tool to
1.6 This international standard was developed in accor-
determine if an installation system was appropriate.
dance with internationally recognized principles on standard-
4.2 It is acceptable for other (mainly unglazed) ceramic tile
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- surfaces to have some grout retention if it is light and evenly
distributed.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
5. Apparatus
2. Referenced Documents
5.1 A solid rubber or silicone grout float appropriate for the
2
type of grout being utilized,
2.1 ANSI Documents:
ANSI A137.1 American National Standard Specifications
5.2 Mixing container for the grout,
for Ceramic Tile
5.3 Masking tape,
3. Terminology 5.4 Sponge, of the type typically sold for grout clean up, and
3.1 Definitions: 5.5 Stiff bristled brush or scrub pad for textured surfaces.
3.1.1 grout retention, n—residual grout remaining on a tile
6. Test Specimens
surface after normal clean up procedures have been completed
6.1 The tile product, type of grout, method of preparing the
tile, method of preparing the grout, drying time after grout
1
This test method is under the jurisdiction of ASTM Committee C21 on Ceramic
application, and clean-up method may be varied with the
Whitewares and Related Products and is the direct responsibility of Subcommittee
requirements of the test.
C21.06 on Ceramic Tile.
Current edition approved Feb. 1, 2024. Published February 2024. DOI: 10.1520/
6.2 At least three tile specimens that are free of facial
C1943–24.
2
defects and representative of the tile component of the instal-
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org. lation system of interest. Test specimens shall be representative
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1943 − 24
FIG. 1 Tile That Has Retain
...

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